Yahoo! Message number: 2500
Date: Wed, 25 Jul 2012 13:49:37 -0700
From: jim s
Subject: Re: [RuGRiD-Laptop] Re: one more attempt
text/plain; charset=windows-1252; format=flowed

Mr Rainbow dropped mention that he had a problem figuring out how the 
batteries and AC power module worked.

I had forgotten that Grid had the either battery or power supply design, 
and only caught it.  I tried to explain that so Rainbow knows he may not 
even have a battery pack but only a Grid and a switching power supply.

Hopefully he is digesting all this and will get a working Grid, though 
perhaps one w/o battery operation capability.

thanks for the assists to this thread about the battery / power supply 
setup.

My three Grids are deeply buried in storage, and I don't even know if 
they are the same units we are discussing and could not see the power 
supply setup first hand.

Jim

On 7/25/2012 10:41 AM, robert wrote:
>
> grid 1500 batteries are made of plastic. the power supply modules are 
> metal.

Yahoo! Message number: 2501
Date: Wed, 25 Jul 2012 18:24:17 -0400
From: "Len.C"
Subject: Re: [RuGRiD-Laptop] Re: one more attempt
text/plain; charset=ISO-8859-1; format=flowed

Mine 1520 or whatever it is in on the shelf came with a plastic battery 
case and a chromed up power supply.


On 7/25/2012 12:29 PM, Tom Rutherford wrote:
>
> My GRiD 1520 has a switching power supply that slides into the battery
> compartment. I didn't get a battery (or anything else, really) with the
> computer. But, if the computer housing is magnesium or a magnesium alloy,
> then it does stand to reason that the battery pack might be, too.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio. Over."
>
> ----- Original Message -----
> From: "jim s" <jws@... <mailto:jws%40jwsss.com>>
> To: <RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>>
> Sent: Tuesday, July 24, 2012 1:07 PM
> Subject: Re: [RuGRiD-Laptop] Re: one more attempt
>
> > Since I don't have such and thought it was plastic, and it is magnesium,
> > the working of the metal presents a fire hazard.
> >
> > Be very careful working magnesium. I was going to suggest using a
> > dremel tool to cut it open, but that is out. I wouldn't even drill it.
> >
> > About the only safe work you have magnesium is pressure (cutting with an
> > arbor press or shear) or the knife. Other than that find some machinest
> > who knows how to work it.
> >
> > I see why the battery guys rejected you. They can work hard plastic all
> > day long, but not magnesium metal.
> >
> > You might see if you have any contacts or local light machine works with
> > someone who might give an idea on how to work the thing and cut it open,
> > but I'm sorry, nowhere did you mention we were working metal. the
> > corrosion risk is way higher too, with alkali leakage onto magnesium
> > very bad.
> >
> > Are you sure this box you are working has any batteries?
> >
> > I'm not sure, but recall that Grid had a unique system of interchanging
> > power sources, and not combining batteries and AC. There were a
> > multitude of units on the surplus market shaped like a small grid
> > battery pack for a long time out here which were AC units only. You pop
> > out the battery and put in this unit and plug it into the wall. IIRC
> > that model had two battery locations, and you put one of the battery
> > packs in one side, and a power supply in the other one, and you could
> > charge a battery. Or if you were totally mobile you had a battery in
> > each.
> >
> > Another one must have had a battery charging station, since you could
> > only put in either battery or PS.
> >
> > I apologize to the other list members if all of this was explained
> > previously. the light bulb just went on for me here, since I was
> > working from memory.
> >
> > Jim
> >
> > On 7/24/2012 1:43 AM, Rainbow wrote:
> >> It's possible to try whacking the battery pack on the side, but 
> there are
> >> risks to irreparable damage to the battery pack itself, despite the 
> fact
> >> that it's made out of magnesium.
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
>
> 

Yahoo! Message number: 2502
Date: Thu, 26 Jul 2012 12:14:20 -0000
From: "Androgenoide"
Subject: Re: one more attempt

A somewhat more common arrangement for rapid charge batteries is for the third lead to go to a temperature sensor.   The charger hits the battery with a very high current until the temperature starts to rise and then backs off to a trickle.














--- In RuGRiD-Laptop@yahoogroups.com, robert <dcat4955@...> wrote:
>
>  wow...
>
> some misinformation floating here...
>
> the yellow lead is more than likely a sense lead. commercial radios do this
> for their battery packs. the pack is charged as a whole but only one cell
> is monitored. when that one cell reached its fully charged voltage the
> charger cuts out. its a lousy way to do things because the whole pack is
> charged according to the health of that one cell. thats how it was commonly
> done in the NiCad days though.
>
> you can solder your own packs together. YOUR skill will determine whether
> or not you can do it. this is why cells with solder tabs are sold for
> people making custom packs. kids into R/C cars do it all the time and they
> are pulling serious amps from their packs. you'll need a real solder gun of
> like 150-200w. a puny 30w pencil tip iron wont cut it.
>
> cell polarity can sometimes be hard to visually determine due to odd cell
> construction. harbor freight, northern tool, or any of those chinese toll
> vendors generally have cheap digital meters for under $5 that are more than
> adequate for figuring out which end is positive on a battery.
>
> getting the batteries open can be daunting but there's tricks. most
> computer packs are sealed (no screws). place battery in vise with seam
> running horizontally and slowly tighten down on it. your waiting for pops
> in the plastic case. once you get one, loosen the vise and turn the pack
> and crunch from another angle till you get another POP! eventually you'll
> be able to work a screwdriver into the seam and use it to work the plastic
> case open.
>
> resealing the case will require some crazy glue and fixing the case seams
> you mucked up from the screwdriver.
>
> yes, it can be done. i've done it. is it for the un-brave, faint hearted,
> or unskilled? no. if you dont have a hint of McGuyver in your soul you're
> better off paying an arm and a leg and letting some place like batteries
> plus do it for you.
>

Yahoo! Message number: 2503
Date: Thu, 26 Jul 2012 13:21:46 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: one more attempt
text/plain; charset="iso-8859-1"

I can't remember if my power supply is chromed up or just bare metal.  It's a big ol' thing, though, as low-current switchers go.  But, it was built probably 20+ years ago, so things weren't as miniaturized back then.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message -----
From: Len.C
To: RuGRiD-Laptop@yahoogroups.com
Sent: Wednesday, July 25, 2012 6:24 PM
Subject: Re: [RuGRiD-Laptop] Re: one more attempt




Mine 1520 or whatever it is in on the shelf came with a plastic battery case and a chromed up power supply.



On 7/25/2012 12:29 PM, Tom Rutherford wrote:


  My GRiD 1520 has a switching power supply that slides into the battery
  compartment. I didn't get a battery (or anything else, really) with the
  computer. But, if the computer housing is magnesium or a magnesium alloy,
  then it does stand to reason that the battery pack might be, too.

  -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
  "She said it was either her or the ham radio. Over."

  ----- Original Message -----
  From: "jim s" <jws@...>
  To: <RuGRiD-Laptop@yahoogroups.com>
  Sent: Tuesday, July 24, 2012 1:07 PM
  Subject: Re: [RuGRiD-Laptop] Re: one more attempt

  > Since I don't have such and thought it was plastic, and it is magnesium,
  > the working of the metal presents a fire hazard.
  >
  > Be very careful working magnesium. I was going to suggest using a
  > dremel tool to cut it open, but that is out. I wouldn't even drill it.
  >
  > About the only safe work you have magnesium is pressure (cutting with an
  > arbor press or shear) or the knife. Other than that find some machinest
  > who knows how to work it.
  >
  > I see why the battery guys rejected you. They can work hard plastic all
  > day long, but not magnesium metal.
  >
  > You might see if you have any contacts or local light machine works with
  > someone who might give an idea on how to work the thing and cut it open,
  > but I'm sorry, nowhere did you mention we were working metal. the
  > corrosion risk is way higher too, with alkali leakage onto magnesium
  > very bad.
  >
  > Are you sure this box you are working has any batteries?
  >
  > I'm not sure, but recall that Grid had a unique system of interchanging
  > power sources, and not combining batteries and AC. There were a
  > multitude of units on the surplus market shaped like a small grid
  > battery pack for a long time out here which were AC units only. You pop
  > out the battery and put in this unit and plug it into the wall. IIRC
  > that model had two battery locations, and you put one of the battery
  > packs in one side, and a power supply in the other one, and you could
  > charge a battery. Or if you were totally mobile you had a battery in
  > each.
  >
  > Another one must have had a battery charging station, since you could
  > only put in either battery or PS.
  >
  > I apologize to the other list members if all of this was explained
  > previously. the light bulb just went on for me here, since I was
  > working from memory.
  >
  > Jim
  >
  > On 7/24/2012 1:43 AM, Rainbow wrote:
  >> It's possible to try whacking the battery pack on the side, but there are 
  >> risks to irreparable damage to the battery pack itself, despite the fact
  >> that it's made out of magnesium.
  >
  >
  >
  > ------------------------------------
  >
  > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
  >
  >
  >

Yahoo! Message number: 2504
Date: Sat, 28 Jul 2012 18:51:53 -0400
From: "Len.C"
Subject: Re: [RuGRiD-Laptop] Re: one more attempt
text/plain; charset=ISO-8859-1; format=flowed

You will find that the cells are not soldered to each other but spot 
welded.  One of the reason you will need to find a place that can 
rebuilt it for you.  Ya you could solder them but I doubt you could do a 
good enough job so they would fit back into the case.  As most people 
including myself have learned, you get one too hot and its out to 
lunch.  You could plug the vent hole in one and not know it. Plug that 
into your grid and then charge it and when that one lets go kiss the 
grid goodbye.  You may also find, unless the pack is marked NiCad that 
they are not NiCad cells in there, and if they aren't then they explode 
even better than NiCads.

When I fist messed with batteries in my early teens, I was given some 
new D cells, they didn't have the tit on the positive end so I put some 
solder on them, never overheated them but managed to cover up a vent 
hole.  Stuck them in a 4 cell charger and went to bed, all was fine in 
the morning when I left for school.  I came home and was like WTF!  The 
charger was destroyed, I never did find it all.  3 of the cells where on 
the floor and the 4th one was well, I found the outside case of it, well 
part of it and wasn't able to find the rest of it.  Even when I moved 
out and cleared everything out of the room I still didn't find the rest 
of it.

You have been given names of places to send it to.  You local yahoos 
well you know what they know which isn't much.  But that doesn't mean 
that some other place can't rebuild it.

I don't know where you get your ideas from.  If it works now or did work 
before the pack died then after a rebuild there is no reason it should 
not work.

Why would grid want to continue to sell that model or support over the 
last 20 years?

I have never seen a battery pack made out of magnesium, are you sure 
that its not plastic?



On 7/24/2012 4:43 AM, Rainbow wrote:
>
> Ouch that's not good. Unfortunately, trying to find ways to take the 
> battery apart is the only viable option.
>
> Sadly, it is nearly impossible to even find someone who is willing to 
> take the battery apart. The battery pack itself is sealed so tight, 
> there is no way to take the battery apart without a high risk of 
> breaking it and there will be absolutely no assurance that the rugged 
> tablet PC will continue to work as is once the battery pack is 
> rebuilt/repaired.
>
> GRiD Computer Systems built that tablet PC that way and since they're 
> out of business, the product hasn't been sold or supported by GRiD for 
> nearly two decades now.
>
> It's possible to try whacking the battery pack on the side, but there 
> are risks to irreparable damage to the battery pack itself, despite 
> the fact that it's made out of magnesium.
>
> > I "AssuUme" it's red yellow black ..and yeah red-positive 
> black-negative I Guess yellow-ground?
>
> That's what I might be thinking, but I will never know until there are 
> ways to get the battery pack open and replacing the dead cells.
>
> > (other people here'd know better..AND might be yelling at their 
> computer screens right now yEAH Yeah i know i know..hey i build 
> animatronics and displays, scenics murals robots but have been run so 
> ragged with lack of work in philadelphia that my electronics side 
> never got enough development time so now i'm the quick and dirty and 
> duct-tape kinda guy)
>
> > yeah I don't know how common that was (iS?) but I know IBM had it 
> like that on their powerbooks which IS a good way to foRce people to 
> keep the battery's charged (AND might even act as a buffer in case 
> there's a jolt..it'll jolt the battery but not the pc itself)..BUT 
> yeah once the battery went bad it just seems like a MEAN thing to do 
> to people!
>
> Early IBM PS/note and Thinkpad-based laptops can never be compared to 
> the 68030/68040-based Powerbooks. Those 386SX-based notebook computers 
> still work as is without the need of the battery, because the battery 
> does not hold a charge anymore.
>
> > yeah there's 8 in there..
> > AND woW Was i wrong about the circuit board..
> > I remebered it being simple but naw it's got a couple layers and 
> some circuitry AND there's like ?5 wires coming out of the battery 
> pack so maybe there's connections to each pair or something?
>
> I too believe that people are wrong about the circuit board, but it's 
> the battery pack itself. There are lots of wires that attach to the 
> battery pack. If the dead batteries are gonna be replaced, they need 
> de-soldiered with a soldiering iron...carefully.
>
> If I can, we're gonna try to take some photos of the battery pack to 
> get a better picture of what it looks like.
>
> 

Yahoo! Message number: 2505
Date: Sat, 28 Jul 2012 18:52:00 -0400
From: "Len.C"
Subject: Re: [RuGRiD-Laptop] Re: one more attempt
text/plain; charset=ISO-8859-1; format=flowed

You will find that the cells are not soldered to each other but spot 
welded.  One of the reason you will need to find a place that can 
rebuilt it for you.  Ya you could solder them but I doubt you could do a 
good enough job so they would fit back into the case.  As most people 
including myself have learned, you get one too hot and its out to 
lunch.  You could plug the vent hole in one and not know it. Plug that 
into your grid and then charge it and when that one lets go kiss the 
grid goodbye.  You may also find, unless the pack is marked NiCad that 
they are not NiCad cells in there, and if they aren't then they explode 
even better than NiCads.

When I fist messed with batteries in my early teens, I was given some 
new D cells, they didn't have the tit on the positive end so I put some 
solder on them, never overheated them but managed to cover up a vent 
hole.  Stuck them in a 4 cell charger and went to bed, all was fine in 
the morning when I left for school.  I came home and was like WTF!  The 
charger was destroyed, I never did find it all.  3 of the cells where on 
the floor and the 4th one was well, I found the outside case of it, well 
part of it and wasn't able to find the rest of it.  Even when I moved 
out and cleared everything out of the room I still didn't find the rest 
of it.

You have been given names of places to send it to.  You local yahoos 
well you know what they know which isn't much.  But that doesn't mean 
that some other place can't rebuild it.


On 7/24/2012 4:43 AM, Rainbow wrote:
>
> Ouch that's not good. Unfortunately, trying to find ways to take the 
> battery apart is the only viable option.
>
> Sadly, it is nearly impossible to even find someone who is willing to 
> take the battery apart. The battery pack itself is sealed so tight, 
> there is no way to take the battery apart without a high risk of 
> breaking it and there will be absolutely no assurance that the rugged 
> tablet PC will continue to work as is once the battery pack is 
> rebuilt/repaired.
>
> GRiD Computer Systems built that tablet PC that way and since they're 
> out of business, the product hasn't been sold or supported by GRiD for 
> nearly two decades now.
>
> It's possible to try whacking the battery pack on the side, but there 
> are risks to irreparable damage to the battery pack itself, despite 
> the fact that it's made out of magnesium.
>
> > I "AssuUme" it's red yellow black ..and yeah red-positive 
> black-negative I Guess yellow-ground?
>
> That's what I might be thinking, but I will never know until there are 
> ways to get the battery pack open and replacing the dead cells.
>
> > (other people here'd know better..AND might be yelling at their 
> computer screens right now yEAH Yeah i know i know..hey i build 
> animatronics and displays, scenics murals robots but have been run so 
> ragged with lack of work in philadelphia that my electronics side 
> never got enough development time so now i'm the quick and dirty and 
> duct-tape kinda guy)
>
> > yeah I don't know how common that was (iS?) but I know IBM had it 
> like that on their powerbooks which IS a good way to foRce people to 
> keep the battery's charged (AND might even act as a buffer in case 
> there's a jolt..it'll jolt the battery but not the pc itself)..BUT 
> yeah once the battery went bad it just seems like a MEAN thing to do 
> to people!
>
> Early IBM PS/note and Thinkpad-based laptops can never be compared to 
> the 68030/68040-based Powerbooks. Those 386SX-based notebook computers 
> still work as is without the need of the battery, because the battery 
> does not hold a charge anymore.
>
> > yeah there's 8 in there..
> > AND woW Was i wrong about the circuit board..
> > I remebered it being simple but naw it's got a couple layers and 
> some circuitry AND there's like ?5 wires coming out of the battery 
> pack so maybe there's connections to each pair or something?
>
> I too believe that people are wrong about the circuit board, but it's 
> the battery pack itself. There are lots of wires that attach to the 
> battery pack. If the dead batteries are gonna be replaced, they need 
> de-soldiered with a soldiering iron...carefully.
>
> If I can, we're gonna try to take some photos of the battery pack to 
> get a better picture of what it looks like.
>
> 

Yahoo! Message number: 2506
Date: Sat, 28 Jul 2012 18:52:06 -0400
From: "Len.C"
Subject: Re: [RuGRiD-Laptop] Re: one more attempt
text/plain; charset=ISO-8859-1; format=flowed

You will find that the cells are not soldered to each other but spot 
welded.  One of the reason you will need to find a place that can 
rebuilt it for you.  Ya you could solder them but I doubt you could do a 
good enough job so they would fit back into the case.  As most people 
including myself have learned, you get one too hot and its out to 
lunch.  You could plug the vent hole in one and not know it. Plug that 
into your grid and then charge it and when that one lets go kiss the 
grid goodbye.  You may also find, unless the pack is marked NiCad that 
they are not NiCad cells in there, and if they aren't then they explode 
even better than NiCads.

When I fist messed with batteries in my early teens, I was given some 
new D cells, they didn't have the tit on the positive end so I put some 
solder on them, never overheated them but managed to cover up a vent 
hole.  Stuck them in a 4 cell charger and went to bed, all was fine in 
the morning when I left for school.  I came home and was like WTF!  The 
charger was destroyed, I never did find it all.  3 of the cells where on 
the floor and the 4th one was well, I found the outside case of it, well 
part of it and wasn't able to find the rest of it.  Even when I moved 
out and cleared everything out of the room I still didn't find the rest 
of it.

You have been giv


On 7/24/2012 4:43 AM, Rainbow wrote:
>
> Ouch that's not good. Unfortunately, trying to find ways to take the 
> battery apart is the only viable option.
>
> Sadly, it is nearly impossible to even find someone who is willing to 
> take the battery apart. The battery pack itself is sealed so tight, 
> there is no way to take the battery apart without a high risk of 
> breaking it and there will be absolutely no assurance that the rugged 
> tablet PC will continue to work as is once the battery pack is 
> rebuilt/repaired.
>
> GRiD Computer Systems built that tablet PC that way and since they're 
> out of business, the product hasn't been sold or supported by GRiD for 
> nearly two decades now.
>
> It's possible to try whacking the battery pack on the side, but there 
> are risks to irreparable damage to the battery pack itself, despite 
> the fact that it's made out of magnesium.
>
> > I "AssuUme" it's red yellow black ..and yeah red-positive 
> black-negative I Guess yellow-ground?
>
> That's what I might be thinking, but I will never know until there are 
> ways to get the battery pack open and replacing the dead cells.
>
> > (other people here'd know better..AND might be yelling at their 
> computer screens right now yEAH Yeah i know i know..hey i build 
> animatronics and displays, scenics murals robots but have been run so 
> ragged with lack of work in philadelphia that my electronics side 
> never got enough development time so now i'm the quick and dirty and 
> duct-tape kinda guy)
>
> > yeah I don't know how common that was (iS?) but I know IBM had it 
> like that on their powerbooks which IS a good way to foRce people to 
> keep the battery's charged (AND might even act as a buffer in case 
> there's a jolt..it'll jolt the battery but not the pc itself)..BUT 
> yeah once the battery went bad it just seems like a MEAN thing to do 
> to people!
>
> Early IBM PS/note and Thinkpad-based laptops can never be compared to 
> the 68030/68040-based Powerbooks. Those 386SX-based notebook computers 
> still work as is without the need of the battery, because the battery 
> does not hold a charge anymore.
>
> > yeah there's 8 in there..
> > AND woW Was i wrong about the circuit board..
> > I remebered it being simple but naw it's got a couple layers and 
> some circuitry AND there's like ?5 wires coming out of the battery 
> pack so maybe there's connections to each pair or something?
>
> I too believe that people are wrong about the circuit board, but it's 
> the battery pack itself. There are lots of wires that attach to the 
> battery pack. If the dead batteries are gonna be replaced, they need 
> de-soldiered with a soldiering iron...carefully.
>
> If I can, we're gonna try to take some photos of the battery pack to 
> get a better picture of what it looks like.
>
> 

Yahoo! Message number: 2507
Date: Sat, 28 Jul 2012 16:42:47 -0700
From: jim s
Subject: Re: [RuGRiD-Laptop] Re: one more attempt

I think that the person is dealing with a power supply.  The grid 
designs included some where you swapped in an AC power supply module 
into a compartment which looked like a battery compartment, and in fact 
had a battery.

and you're right if the person has a battery pack it most certainly will 
need to be rebuilt as any New Old Stock units would probably be useless 
by now too, and none would be making and stocking such old units.



On 7/28/2012 3:51 PM, Len.C wrote:
>
>
> Why would grid want to continue to sell that model or support over the 
> last 20 years?
>
> I have never seen a battery pack made out of magnesium, are you sure 
> that its not plastic?

Yahoo! Message number: 2508
Date: Sun, 29 Jul 2012 02:55:24 -0000
From: "techtalklive@..."
Subject: Typical 1500 series failure modes?

I am considering tackling the repair of a 1530 that
does not respond to the power switch.  The power supply
module measures 16.35v so I think its fine (unfortunately,
that would have been an easy problem isolation!)
So its something internal.  I have the service manuals
downloaded but I thought maybe I'd get some pointers form
folks who have already performed cold stone dead diagnosis.

If I don't dive into this FYI this very clean 1530 will
be available for parts/repair!

Thanks in advance,
DC

Yahoo! Message number: 2509
Date: Sat, 28 Jul 2012 20:24:49 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Typical 1500 series failure modes?
text/plain; charset=iso-8859-1

Hello DC.� Welcome to the group!
A "DRT" 1530, eh?� (DRT=Dead, Right There)� I'm assuming none of the LED's on the motherboard light up, right?
I'm not an expert on the 1530.� I'm a lot more familiar with the 1520 and 1550SX.� There's no way around it, you're going to have to open the case.
Thinking about it, it may be the 16 volt power supply.� Being that it's old, it may fail when a load is placed on it.� It might help to test this with another power supply, assuming you have another DC supply to test with.
I don't remember any fuses inside any of the Grids.� HHmm...I wonder if someone applied too much voltage to it and an internal componet fried.
Just a thought.
-Shawn


________________________________
 From: "techtalklive@..." <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Saturday, July 28, 2012 10:55 PM
Subject: [RuGRiD-Laptop] Typical 1500 series failure modes?

I am considering tackling the repair of a 1530 that
does not respond to the power switch.� The power supply
module measures 16.35v so I think its fine (unfortunately,
that would have been an easy problem isolation!)
So its something internal.� I have the service manuals
downloaded but I thought maybe I'd get some pointers form
folks who have already performed cold stone dead diagnosis.

If I don't dive into this FYI this very clean 1530 will
be available for parts/repair!

Thanks in advance,
DC



------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2510
Date: Sun, 29 Jul 2012 07:27:14 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Hi, DC

         Glad to have you in the group. Shawn is indeed more familiar with the 1520's and 1550x. However, the 1530's have always been more my bag. I have several working models, including the original I bought in 1984. The architecture of the 1520's and 1530's are actually very similar to the point of almost being identical in most of its parts. The diffence of course is the switch from an 8 bit machine to a 16 bit machine albeit in SX form. I've bought a lot of dead machines, mainly for parts, however I have never actually tried and bring a dead one back to life. The main reason is I don't really have the tools or information to do it. I don't believe anyone else here has tried it either.
         The service manuals don't really address what to do with a dead machine as the company probably would just replace the motherboard in such a situation. It's a lot easier to do that than try and diagnose the problem on a malfunctioning board. In order for me to properly try and bring a dead machine to life, I would need the full detailed schematic of the motherboard circuitry, and that was something the company never put out, probably because it was a trade secret, adn also unnecessary for the reason I just noted. I would also need the tried and true tools of a variable power supply, signal generator, and oscilloscope to truly tease out the problems in a dead board. The most likely culprit in my mind would be the power supply  capacitors in the rectifier bridge at the very back of the board, which likely would go sour with age. But I can't rule out some other anomoly in the control circuitry that would just turn the motherboard on, and thus would simply prevent the board from responding. I might be able to halfway guess some of the circuitry, especially the power supply circuitry, but I would still be guessing.
         The problem may be in the video board or the video power supply module, which might prevent the board from even trying to turn on if they were completely bad or missing. HOwwver, I would expect to see at least a flash of light, I would think. I'm not sure to be honest as I've never tried doing that.
         I wish I had a better answer for you. Most of the repairs we do on these machines are replacing dead CMOS batteries and dead HDD's thorugh re-engineering of the code on the BIOD chips and burning new ones. Sometimes we deal in upgrading memery even though you cannot find those 1 Mb SIPP's anymore. One or two of us have tried upgradng the CPU to the Cyrix 486, which can be done. Shawn is specifically working on trying find a way to boot a 1520 (and thus 1530 can also be used) from a flash drive. When you look on the motherboard, you can see many little checkpoints of solder, which I think were used for voltage and signal checking on individual motherboards at the factory for quality control. However, we have none of that information or knowledge, as least as far as I know
         Restoring a dead machine, therefore, without the right information and equipment I noted, probably would not be possible. But if you actually can do this sort of work, it would be greatly appreciated. Some one would probably have to take a working machine and then check all the appropriate points on the motherboard and record the findings as a way to check a dead motherboard, but we would really need that schematic. Best of luck to you.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.  The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.  I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>

Yahoo! Message number: 2511
Date: Sun, 29 Jul 2012 17:36:44 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Thanks for the heads up.  I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
Getting old things to boot off SD cards is cool... I saw old
macbooks being modified like that in other places.  Fun stuff.
The eprom work is very impressive.  I used to burn eproms back in the 80's for embedded system software development.

If I start taking it apart, will others still be interested in it for parts?  Its a really clean example.  There were sub models of this with different screens I think.  This screen is very tall.  Could post pics if anything would want to see it.

So here's what I know:

>From the exterior there is no visual or audible response to the power switch.  Yes it could still be the supply not working under load.
I can put a power resister on the supply and see if it holds up.
But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.
If I were to take it appart, I'd look for visual signs of a failure.
Then perhaps try some cold spray diagnosis and see if it response to that.  I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.

Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.

Any other ideas

Yahoo! Message number: 2512
Date: Sun, 29 Jul 2012 10:45:16 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=iso-8859-1

I would be very interested in seeing pictures.
�
Booting from CF or SD would be cool.� SD would be really tricky.� Thinking it through, you'd have to build some sort of interface to hook the IDE in the Grid to SD.� Not impossible, just may not be worth it, in terms of hardware and time.
CF interface is IDE, so it lends itself very nicely to the Grid.
But as others have suggested, Disk On Module would be a better way to go than CF.
�
I really need to get back to working with Grids.� I've got too many projects going on.� My latest project is finding a use for my Raspberry Pi.� Amazing little machine for $35.
-Shawn
P.S. CF = Compact Flash in case anyone is confused.
�

________________________________
 From: "techtalklive@..." <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Sunday, July 29, 2012 1:36 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Thanks for the heads up.� I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
Getting old things to boot off SD cards is cool... I saw old
macbooks being modified like that in other places.� Fun stuff.
The eprom work is very impressive.� I used to burn eproms back in the 80's for embedded system software development.

If I start taking it apart, will others still be interested in it for parts?� Its a really clean example.� There were sub models of this with different screens I think.� This screen is very tall.� Could post pics if anything would want to see it.

So here's what I know:

>From the exterior there is no visual or audible response to the power switch.� Yes it could still be the supply not working under load.
I can put a power resister on the supply and see if it holds up.
But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.�
If I were to take it appart, I'd look for visual signs of a failure.
Then perhaps try some cold spray diagnosis and see if it response to that.� I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.�

Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.

Any other ideas






------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2513
Date: Sun, 29 Jul 2012 18:29:38 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Thanks, DC,

I would also be interested in the unit myself. Concerning the screens, one thing I would point out is that that rear power supply unit, which is separate from the motherboard and behind the disk drives, is allied with and supplies the video screen. These computers used three types of screens; monchrome, LCD, and VGA. Depending on the type of screen, that power supply provides different voltages. so the screen and power supply unit should go together as a rule. You can tell from the video card: Two EPROM sockets means it's monochrome, one socket means LCD, no sockets mean VGA. Like Shawn, I don't really have the time to truly investigate these machines to this level of intensity, or I would go get the equipment myself and do the work. It would really be nice if someone was able to do that work for the group. Pictures would also be great. A functioning hard drive would be in some demand by others here in the group as they are difficult to come by. If you have 1 MB SIPPs in the machine, they would also be very much in demand, though chances are you will only have 256K sticks. Past this though, I don't any other ideas.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Thanks for the heads up.  I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
> Getting old things to boot off SD cards is cool... I saw old
> macbooks being modified like that in other places.  Fun stuff.
> The eprom work is very impressive.  I used to burn eproms back in the 80's for embedded system software development.
>
> If I start taking it apart, will others still be interested in it for parts?  Its a really clean example.  There were sub models of this with different screens I think.  This screen is very tall.  Could post pics if anything would want to see it.
>
> So here's what I know:
>
> From the exterior there is no visual or audible response to the power switch.  Yes it could still be the supply not working under load.
> I can put a power resister on the supply and see if it holds up.
> But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.
> If I were to take it appart, I'd look for visual signs of a failure.
> Then perhaps try some cold spray diagnosis and see if it response to that.  I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.
>
> Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.
>
> Any other ideas
>

Yahoo! Message number: 2514
Date: Sun, 29 Jul 2012 19:37:36 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

That was useful! It looks like I should head in the direction of a careful teardown to investigate whats inside regardless of fixing.
I assume I will find tear down info in the manuals...
Thanks so much.

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Thanks, DC,
>
> I would also be interested in the unit myself. Concerning the screens, one thing I would point out is that that rear power supply unit, which is separate from the motherboard and behind the disk drives, is allied with and supplies the video screen. These computers used three types of screens; monchrome, LCD, and VGA. Depending on the type of screen, that power supply provides different voltages. so the screen and power supply unit should go together as a rule. You can tell from the video card: Two EPROM sockets means it's monochrome, one socket means LCD, no sockets mean VGA. Like Shawn, I don't really have the time to truly investigate these machines to this level of intensity, or I would go get the equipment myself and do the work. It would really be nice if someone was able to do that work for the group. Pictures would also be great. A functioning hard drive would be in some demand by others here in the group as they are difficult to come by. If you have 1 MB SIPPs in the machine, they would also be very much in demand, though chances are you will only have 256K sticks. Past this though, I don't any other ideas.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > Thanks for the heads up.  I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
> > Getting old things to boot off SD cards is cool... I saw old
> > macbooks being modified like that in other places.  Fun stuff.
> > The eprom work is very impressive.  I used to burn eproms back in the 80's for embedded system software development.
> >
> > If I start taking it apart, will others still be interested in it for parts?  Its a really clean example.  There were sub models of this with different screens I think.  This screen is very tall.  Could post pics if anything would want to see it.
> >
> > So here's what I know:
> >
> > From the exterior there is no visual or audible response to the power switch.  Yes it could still be the supply not working under load.
> > I can put a power resister on the supply and see if it holds up.
> > But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.
> > If I were to take it appart, I'd look for visual signs of a failure.
> > Then perhaps try some cold spray diagnosis and see if it response to that.  I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.
> >
> > Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.
> >
> > Any other ideas
> >
>

Yahoo! Message number: 2515
Date: Sun, 29 Jul 2012 19:40:12 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Ah, I said SD and was really thinking CF, so I started you off on a rabit hole. Sorry, but thanks it was informative none the less as I thought SD was based on some sort of IDE variant.  Now I now not.

--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> I would be very interested in seeing pictures.
> �
> Booting from CF or SD would be cool.� SD would be really tricky.� Thinking it through, you'd have to build some sort of interface to hook the IDE in the Grid to SD.� Not impossible, just may not be worth it, in terms of hardware and time.
> CF interface is IDE, so it lends itself very nicely to the Grid.
> But as others have suggested, Disk On Module would be a better way to go than CF.
> �
> I really need to get back to working with Grids.� I've got too many projects going on.� My latest project is finding a use for my Raspberry Pi.� Amazing little machine for $35.
> -Shawn
> P.S. CF = Compact Flash in case anyone is confused.
> �
>
> ________________________________
>  From: "techtalklive@..." <doug@...>
> To: RuGRiD-Laptop@yahoogroups.com
> Sent: Sunday, July 29, 2012 1:36 PM
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
> Thanks for the heads up.� I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
> Getting old things to boot off SD cards is cool... I saw old
> macbooks being modified like that in other places.� Fun stuff.
> The eprom work is very impressive.� I used to burn eproms back in the 80's for embedded system software development.
>
> If I start taking it apart, will others still be interested in it for parts?� Its a really clean example.� There were sub models of this with different screens I think.� This screen is very tall.� Could post pics if anything would want to see it.
>
> So here's what I know:
>
> From the exterior there is no visual or audible response to the power switch.� Yes it could still be the supply not working under load.
> I can put a power resister on the supply and see if it holds up.
> But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.�
> If I were to take it appart, I'd look for visual signs of a failure.
> Then perhaps try some cold spray diagnosis and see if it response to that.� I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.�
>
> Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.
>
> Any other ideas
>
>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>
> � � http://docs.yahoo.com/info/terms/
>

Yahoo! Message number: 2516
Date: Sun, 29 Jul 2012 20:25:24 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Check your regular email, DC

There's a PDF file there that will help you tear the computer down.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> That was useful! It looks like I should head in the direction of a careful teardown to investigate whats inside regardless of fixing.
> I assume I will find tear down info in the manuals...
> Thanks so much.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Thanks, DC,
> >
> > I would also be interested in the unit myself. Concerning the screens, one thing I would point out is that that rear power supply unit, which is separate from the motherboard and behind the disk drives, is allied with and supplies the video screen. These computers used three types of screens; monchrome, LCD, and VGA. Depending on the type of screen, that power supply provides different voltages. so the screen and power supply unit should go together as a rule. You can tell from the video card: Two EPROM sockets means it's monochrome, one socket means LCD, no sockets mean VGA. Like Shawn, I don't really have the time to truly investigate these machines to this level of intensity, or I would go get the equipment myself and do the work. It would really be nice if someone was able to do that work for the group. Pictures would also be great. A functioning hard drive would be in some demand by others here in the group as they are difficult to come by. If you have 1 MB SIPPs in the machine, they would also be very much in demand, though chances are you will only have 256K sticks. Past this though, I don't any other ideas.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > Thanks for the heads up.  I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
> > > Getting old things to boot off SD cards is cool... I saw old
> > > macbooks being modified like that in other places.  Fun stuff.
> > > The eprom work is very impressive.  I used to burn eproms back in the 80's for embedded system software development.
> > >
> > > If I start taking it apart, will others still be interested in it for parts?  Its a really clean example.  There were sub models of this with different screens I think.  This screen is very tall.  Could post pics if anything would want to see it.
> > >
> > > So here's what I know:
> > >
> > > From the exterior there is no visual or audible response to the power switch.  Yes it could still be the supply not working under load.
> > > I can put a power resister on the supply and see if it holds up.
> > > But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.
> > > If I were to take it appart, I'd look for visual signs of a failure.
> > > Then perhaps try some cold spray diagnosis and see if it response to that.  I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.
> > >
> > > Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.
> > >
> > > Any other ideas
> > >
> >
>

Yahoo! Message number: 2517
Date: Mon, 30 Jul 2012 02:46:04 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Thank you!

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Check your regular email, DC
>
> There's a PDF file there that will help you tear the computer down.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > That was useful! It looks like I should head in the direction of a careful teardown to investigate whats inside regardless of fixing.
> > I assume I will find tear down info in the manuals...
> > Thanks so much.
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Thanks, DC,
> > >
> > > I would also be interested in the unit myself. Concerning the screens, one thing I would point out is that that rear power supply unit, which is separate from the motherboard and behind the disk drives, is allied with and supplies the video screen. These computers used three types of screens; monchrome, LCD, and VGA. Depending on the type of screen, that power supply provides different voltages. so the screen and power supply unit should go together as a rule. You can tell from the video card: Two EPROM sockets means it's monochrome, one socket means LCD, no sockets mean VGA. Like Shawn, I don't really have the time to truly investigate these machines to this level of intensity, or I would go get the equipment myself and do the work. It would really be nice if someone was able to do that work for the group. Pictures would also be great. A functioning hard drive would be in some demand by others here in the group as they are difficult to come by. If you have 1 MB SIPPs in the machine, they would also be very much in demand, though chances are you will only have 256K sticks. Past this though, I don't any other ideas.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > Thanks for the heads up.  I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
> > > > Getting old things to boot off SD cards is cool... I saw old
> > > > macbooks being modified like that in other places.  Fun stuff.
> > > > The eprom work is very impressive.  I used to burn eproms back in the 80's for embedded system software development.
> > > >
> > > > If I start taking it apart, will others still be interested in it for parts?  Its a really clean example.  There were sub models of this with different screens I think.  This screen is very tall.  Could post pics if anything would want to see it.
> > > >
> > > > So here's what I know:
> > > >
> > > > From the exterior there is no visual or audible response to the power switch.  Yes it could still be the supply not working under load.
> > > > I can put a power resister on the supply and see if it holds up.
> > > > But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.
> > > > If I were to take it appart, I'd look for visual signs of a failure.
> > > > Then perhaps try some cold spray diagnosis and see if it response to that.  I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.
> > > >
> > > > Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.
> > > >
> > > > Any other ideas
> > > >
> > >
> >
>

Yahoo! Message number: 2518
Date: Mon, 30 Jul 2012 02:55:27 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Good point on the test points of a working machine.
A good service manual would have probably run down the test points
and related what components to check when they don't have the right things going on with them.
Argh.  Even if some kind soul probed them we wouldn't know what
they relate to without a schematic.

--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> Hello DC.� Welcome to the group!
> A "DRT" 1530, eh?� (DRT=Dead, Right There)� I'm assuming none of the LED's on the motherboard light up, right?
> I'm not an expert on the 1530.� I'm a lot more familiar with the 1520 and 1550SX.� There's no way around it, you're going to have to open the case.
> Thinking about it, it may be the 16 volt power supply.� Being that it's old, it may fail when a load is placed on it.� It might help to test this with another power supply, assuming you have another DC supply to test with.
> I don't remember any fuses inside any of the Grids.� HHmm...I wonder if someone applied too much voltage to it and an internal componet fried.
> Just a thought.
> -Shawn
>
>
> ________________________________
>  From: "techtalklive@..." <doug@...>
> To: RuGRiD-Laptop@yahoogroups.com
> Sent: Saturday, July 28, 2012 10:55 PM
> Subject: [RuGRiD-Laptop] Typical 1500 series failure modes?
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.� The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.� I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>
> � � http://docs.yahoo.com/info/terms/
>

Yahoo! Message number: 2519
Date: Mon, 30 Jul 2012 02:57:26 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Photos posted "doug's 1530 stuff"

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.  The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.  I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>

Yahoo! Message number: 2520
Date: Sun, 29 Jul 2012 22:58:24 -0400
From: Doug Crawford
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Don't see it?
Is it in the files section anyway?
DC

On 7/29/2012 4:25 PM, jeriddian wrote:

 

Check your regular email, DC

There's a PDF file there that will help you tear the computer down.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." wrote:
>
> That was useful! It looks like I should head in the direction of a careful teardown to investigate whats inside regardless of fixing.
> I assume I will find tear down info in the manuals...
> Thanks so much.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" wrote:
> >
> > Thanks, DC,
> >
> > I would also be interested in the unit myself. Concerning the screens, one thing I would point out is that that rear power supply unit, which is separate from the motherboard and behind the disk drives, is allied with and supplies the video screen. These computers used three types of screens; monchrome, LCD, and VGA. Depending on the type of screen, that power supply provides different voltages. so the screen and power supply unit should go together as a rule. You can tell from the video card: Two EPROM sockets means it's monochrome, one socket means LCD, no sockets mean VGA. Like Shawn, I don't really have the time to truly investigate these machines to this level of intensity, or I would go get the equipment myself and do the work. It would really be nice if someone was able to do that work for the group. Pictures would also be great. A functioning hard drive would be in some demand by others here in the group as they are difficult to come by. If you have 1 MB SIP Ps in the machine, they would also be very much in demand, though chances are you will only have 256K sticks. Past this though, I don't any other ideas.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" wrote:
> > >
> > > Thanks for the heads up. I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
> > > Getting old things to boot off SD cards is cool... I saw old
> > > macbooks being modified like that in other places. Fun stuff.
> > > The eprom work is very impressive. I used to burn eproms back in the 80's for embedded system software development.
> > >
> > > If I start taking it apart, will others still be interested in it for parts? Its a really clean example. There were sub models of this with different screens I think. This screen is very tall. Could post pics if anything would want to see it.
> > >
> > > So here's what I know:
> > >
> > > From the exterior there is no visual or audible response to the power switch. Yes it could still be the supply not working under load.
> > > I can put a power resister on the supply and see if it holds up.
> > > But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.
> > > If I were to take it appart, I'd look for visual signs of a failure.
> > > Then perhaps try some cold spray diagnosis and see if it response to that. I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.
> > >
> > > Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.
> > >
> > > Any other ideas
> > >
> >
>

Yahoo! Message number: 2521
Date: Sun, 29 Jul 2012 22:59:27 -0400
From: Doug Crawford
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

I think I found the file in the files section.
DC

On 7/29/2012 4:25 PM, jeriddian wrote:

 

Check your regular email, DC

There's a PDF file there that will help you tear the computer down.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." wrote:
>
> That was useful! It looks like I should head in the direction of a careful teardown to investigate whats inside regardless of fixing.
> I assume I will find tear down info in the manuals...
> Thanks so much.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" wrote:
> >
> > Thanks, DC,
> >
> > I would also be interested in the unit myself. Concerning the screens, one thing I would point out is that that rear power supply unit, which is separate from the motherboard and behind the disk drives, is allied with and supplies the video screen. These computers used three types of screens; monchrome, LCD, and VGA. Depending on the type of screen, that power supply provides different voltages. so the screen and power supply unit should go together as a rule. You can tell from the video card: Two EPROM sockets means it's monochrome, one socket means LCD, no sockets mean VGA. Like Shawn, I don't really have the time to truly investigate these machines to this level of intensity, or I would go get the equipment myself and do the work. It would really be nice if someone was able to do that work for the group. Pictures would also be great. A functioning hard drive would be in some demand by others here in the group as they are difficult to come by. If you have 1 MB SIP Ps in the machine, they would also be very much in demand, though chances are you will only have 256K sticks. Past this though, I don't any other ideas.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" wrote:
> > >
> > > Thanks for the heads up. I had seen that the traffic on these machines were usually about the RTC and Hard Disks. Interesting stuff.
> > > Getting old things to boot off SD cards is cool... I saw old
> > > macbooks being modified like that in other places. Fun stuff.
> > > The eprom work is very impressive. I used to burn eproms back in the 80's for embedded system software development.
> > >
> > > If I start taking it apart, will others still be interested in it for parts? Its a really clean example. There were sub models of this with different screens I think. This screen is very tall. Could post pics if anything would want to see it.
> > >
> > > So here's what I know:
> > >
> > > From the exterior there is no visual or audible response to the power switch. Yes it could still be the supply not working under load.
> > > I can put a power resister on the supply and see if it holds up.
> > > But I might expect a blip on some LED if that was the case, so I am assuming something wrong at the early interior power stages, like a cap.
> > > If I were to take it appart, I'd look for visual signs of a failure.
> > > Then perhaps try some cold spray diagnosis and see if it response to that. I do have a scope to poke around with but yes without a schematic it would be a shot in the dark.
> > >
> > > Finally assuming maybe an overheat/separation I could try giving the board a hit with a heat gun in likely spots.
> > >
> > > Any other ideas
> > >
> >
>

Yahoo! Message number: 2522
Date: Sun, 29 Jul 2012 20:16:02 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=iso-8859-1

Cool pics, Doug.
I kinda was hoping for internal pictures.� But it does look like you got one in very good condition.
�
If you haven't seen it in the service documentation, this is how you open the Grid:
In the 1st photo of the rear of the unit (picture 100_4142), you'll see two rubber "feet" at both ends of the Grid.� If you use a small flat blade screwdriver, those feet pop off.
The feet cover screws.
Remove the screws.� The rear deck lid should be able to be removed.� Then, you'll should be able to get a good visual of the internals of the 1530.
Good luck,
-Shawn


________________________________
 From: "techtalklive@..." <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Sunday, July 29, 2012 10:57 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


Photos posted "doug's 1530 stuff"

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.� The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.� I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2523
Date: Mon, 30 Jul 2012 04:06:05 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

DC,

I put the PDF file on Skydrive and it is in an email I sent to your regular email address at do**@ cr********d.com. It's not in the files section of the forum. This PDF is too big to place on the forum as it is 37 MB's. The file is downloadable as an attachment on the separate email.

Phil

Yahoo! Message number: 2524
Date: Mon, 30 Jul 2012 10:17:06 -0400
From: Doug Crawford
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Right.  I will get internal pics up soon.
DC

On 7/29/2012 11:16 PM, Shawnerz wrote:

 

Cool pics, Doug.

I kinda was hoping for internal pictures.  But it does look like you got one in very good condition.

 

If you haven't seen it in the service documentation, this is how you open the Grid:

In the 1st photo of the rear of the unit (picture 100_4142), you'll see two rubber "feet" at both ends of the Grid.  If you use a small flat blade screwdriver, those feet pop off.

The feet cover screws.

Remove the screws.  The rear deck lid should be able to be removed.  Then, you'll should be able to get a good visual of the internals of the 1530.

Good luck,

-Shawn

From: "techtalklive@..."
To: RuGRiD-Laptop@yahoogroups.com
Sent: Sunday, July 29, 2012 10:57 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Photos posted "doug's 1530 stuff"

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.  The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.  I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

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Yahoo! Message number: 2525
Date: Mon, 30 Jul 2012 19:22:01 +0100 (BST)
From: Alessandro Aria
Subject: GRIDCASE 1590
text/plain; charset=utf-8

 
Hi ,a GRIDCASE 1590 for sale on eBay!

Ciao...Alessandro

Stromboli Islans

Yahoo! Message number: 2527
Date: Tue, 31 Jul 2012 01:07:45 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Posted the internal pics.
Looks like I have an LCD video and 256k memory.
Nothing special, huh?

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.  The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.  I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>

Yahoo! Message number: 2528
Date: Tue, 31 Jul 2012 03:32:58 -0000
From: "jeriddian"
Subject: Download of Manuals and other Files

To all forum Members.

I now have my own server space and have uploaded all of the manuals and other pertinent files to it. Below is a list of the files presently on the server that are available for download:

www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf

www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 DISASSEMBLY_REASSEMBLY Instructions.pdf

www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Field Diagnostics.pdf

www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 No Boot Procedure.pdf

www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service Course Student Guide.pdf

www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service Course.pdf

www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Technical Reference Manual.pdf

www.omnipulsemedia.com/GRiD_files/GRiDCASE 1535 EXP Owner's Manual.pdf

PLease feel free to download them at your convenience.

Have fun :-)

Phil

Yahoo! Message number: 2529
Date: Tue, 31 Jul 2012 06:56:39 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

The machine started working!
It may be an intermittent on/off switch.
So gets through the memory check,
then gets, no surprise... invalid config info 02
and F1 to continue.

But it won't recognize F1 from either the internal or external
keyboard.

Any comments?
Is that a failure mode when the Dallas chip is really dead?

I hope thats it... I think I can do the Dallas change.


--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.  The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.  I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>

Yahoo! Message number: 2530
Date: Tue, 31 Jul 2012 07:07:45 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Well part of the prob could be the P/S.
It started overheating even though the grid was switched off.
Looks like I won't get any further until I can power this
another way.


--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.  The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.  I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>

Yahoo! Message number: 2531
Date: Tue, 31 Jul 2012 13:47:34 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Great to hear, DC,

First, regarding the power supply, Are you referring to the power supply unit going into the back of the computer? If so, those can be replaced. If you are talking about power supply on the motherboard, that of course is another thing.

Second, from your previous post, the response on the screen that you indicated does mean you are correct in that the Dallas RTC chip is dead. It will have to be replaced or modified. I recently uploaded a URL by which you can download the files on how I replace the 1287A chip (and all the manuals as well). I don't know if you were able to get that one yet. The 1287A chips are not that hard to find. In 1530's, you can just replace the chip and boot back up, whereas in 1520's it is sometimes a problem.

Anyway, the pwoer problem comes first of course.

Best of luck,

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Well part of the prob could be the P/S.
> It started overheating even though the grid was switched off.
> Looks like I won't get any further until I can power this
> another way.
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I am considering tackling the repair of a 1530 that
> > does not respond to the power switch.  The power supply
> > module measures 16.35v so I think its fine (unfortunately,
> > that would have been an easy problem isolation!)
> > So its something internal.  I have the service manuals
> > downloaded but I thought maybe I'd get some pointers form
> > folks who have already performed cold stone dead diagnosis.
> >
> > If I don't dive into this FYI this very clean 1530 will
> > be available for parts/repair!
> >
> > Thanks in advance,
> > DC
> >
>

Yahoo! Message number: 2533
Date: Tue, 31 Jul 2012 14:18:59 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Thanks Phil.

Yes forgot to differentiate the P.S., fortunately
its the EXTERNAL one.  Everything internal looks in
order.

And yes, I have your docs, thanks again!

Just to be clear, is the failure to recognize the F1 key
also symptomatic of the Dallas chip being dead?
I can understand the config info being corrupt hence
the 02 code but on other MBs when the MB battery is
dead the F1 key still functions.

I'm curious about the external PS.
It is all silver and has writing on it that it fits a
a number of different GRiDs. Was this some sort of
GRiD replacement P.S.?

Thanks in advance,
DC
--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Great to hear, DC,
>
> First, regarding the power supply, Are you referring to the power supply unit going into the back of the computer? If so, those can be replaced. If you are talking about power supply on the motherboard, that of course is another thing.
>
> Second, from your previous post, the response on the screen that you indicated does mean you are correct in that the Dallas RTC chip is dead. It will have to be replaced or modified. I recently uploaded a URL by which you can download the files on how I replace the 1287A chip (and all the manuals as well). I don't know if you were able to get that one yet. The 1287A chips are not that hard to find. In 1530's, you can just replace the chip and boot back up, whereas in 1520's it is sometimes a problem.
>
> Anyway, the pwoer problem comes first of course.
>
> Best of luck,
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > Well part of the prob could be the P/S.
> > It started overheating even though the grid was switched off.
> > Looks like I won't get any further until I can power this
> > another way.
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I am considering tackling the repair of a 1530 that
> > > does not respond to the power switch.  The power supply
> > > module measures 16.35v so I think its fine (unfortunately,
> > > that would have been an easy problem isolation!)
> > > So its something internal.  I have the service manuals
> > > downloaded but I thought maybe I'd get some pointers form
> > > folks who have already performed cold stone dead diagnosis.
> > >
> > > If I don't dive into this FYI this very clean 1530 will
> > > be available for parts/repair!
> > >
> > > Thanks in advance,
> > > DC
> > >
> >
>

Yahoo! Message number: 2534
Date: Tue, 31 Jul 2012 15:31:21 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
>
My apologies, DC,

I should clarify. It is the config 02 code that tells you the CMOS battery in the 1287A is dead. The F1 key, however, is a different matter. When the CMOS battery is dead, F1 may or may not work. Part of the problem is that when the CMOS battery is dead, then the config data for the HDD cannot be accessed from CMOS. When that happens, the computer cannot recognize the HDD, and if you are trying to boot from the hard drive, the computer won't boot, giving you a failure warning of no OS. You should still be able to boot from a floppy, but possibly depending on which OS (Anywhere from DOS 3.1 to DOS 6.22, though I am not completely sure of this), the F1 key may give you a different response as to the problem, or none at all. I have found it to happen haphazardly with the units I encountered, and have yet to figure out why there are different responses or none at all.

The silver PS is standard, but not the only one out there. I possess several of those and the other standard black ones. They have slightly different power ratings. I forget which is which at the moment.

Phil


> Thanks Phil.
>
> Yes forgot to differentiate the P.S., fortunately
> its the EXTERNAL one.  Everything internal looks in
> order.
>
> And yes, I have your docs, thanks again!
>
> Just to be clear, is the failure to recognize the F1 key
> also symptomatic of the Dallas chip being dead?
> I can understand the config info being corrupt hence
> the 02 code but on other MBs when the MB battery is
> dead the F1 key still functions.
>
> I'm curious about the external PS.
> It is all silver and has writing on it that it fits a
> a number of different GRiDs. Was this some sort of
> GRiD replacement P.S.?
>
> Thanks in advance,
> DC

Yahoo! Message number: 2535
Date: Tue, 31 Jul 2012 12:27:11 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Download of Manuals and other Files

Ah!  Thank you much, Phil.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "jeriddian" <Jeriddian@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Monday, July 30, 2012 11:32 PM
Subject: [RuGRiD-Laptop] Download of Manuals and other Files


> To all forum Members.
>
> I now have my own server space and have uploaded all of the manuals and 
> other pertinent files to it. Below is a list of the files presently on the 
> server that are available for download:
>
> www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC 
> Timing Chip.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 DISASSEMBLY_REASSEMBLY 
> Instructions.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Field Diagnostics.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 No Boot Procedure.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service 
> Course Student Guide.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service 
> Course.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Technical 
> Reference Manual.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1535 EXP Owner's Manual.pdf
>
> PLease feel free to download them at your convenience.
>
> Have fun :-)
>
> Phil
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2536
Date: Tue, 31 Jul 2012 22:06:51 -0000
From: "jeriddian"
Subject: Re: Download of Manuals and other Files

You're welcome, Tom.

--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>
> Ah!  Thank you much, Phil.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio.  Over."
>
>
> ----- Original Message -----
> From: "jeriddian" <Jeriddian@...>
> To: <RuGRiD-Laptop@yahoogroups.com>
> Sent: Monday, July 30, 2012 11:32 PM
> Subject: [RuGRiD-Laptop] Download of Manuals and other Files
>
> 
> > To all forum Members.
> >
> > I now have my own server space and have uploaded all of the manuals and
> > other pertinent files to it. Below is a list of the files presently on the
> > server that are available for download:
> >
> > www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC
> > Timing Chip.pdf
> >
> > www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 DISASSEMBLY_REASSEMBLY
> > Instructions.pdf
> >
> > www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Field Diagnostics.pdf
> >
> > www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 No Boot Procedure.pdf
> >
> > www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service
> > Course Student Guide.pdf
> >
> > www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service
> > Course.pdf
> >
> > www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Technical
> > Reference Manual.pdf
> >
> > www.omnipulsemedia.com/GRiD_files/GRiDCASE 1535 EXP Owner's Manual.pdf
> >
> > PLease feel free to download them at your convenience.
> >
> > Have fun :-)
> >
> > Phil
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
>

Yahoo! Message number: 2537
Date: Wed, 01 Aug 2012 11:22:19 -0000
From: "techtalklive@..."
Subject: Re: Download of Manuals and other Files

I replaced my multipart docs from here and got the tear down instructions.
Thanks!

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> To all forum Members.
>
> I now have my own server space and have uploaded all of the manuals and other pertinent files to it. Below is a list of the files presently on the server that are available for download:
>
> www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 DISASSEMBLY_REASSEMBLY Instructions.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Field Diagnostics.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 No Boot Procedure.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service Course Student Guide.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Service Course.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1500 Series Hardware Technical Reference Manual.pdf
>
> www.omnipulsemedia.com/GRiD_files/GRiDCASE 1535 EXP Owner's Manual.pdf
>
> PLease feel free to download them at your convenience.
>
> Have fun :-)
>
> Phil
>

Yahoo! Message number: 2538
Date: Wed, 01 Aug 2012 11:31:37 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

OK, just a guess here, would need a schematic to verify...
but here goes:
The battery is involved with the Vcc of the keyboard chip.
When the battery cold stone dead the keyboard chip is
unpowered but depending on the particular kbd chip, it may
or may not power up sufficiently through other pins of the chip
to run.  I used to see chips sometimes power up through
their other interface pins when testing power consumption
at a silicon manufacturer on ethernet phy ICs.
That would explain perhaps why some boards respond to F1 and
some don't.  Without some help from the battery in this
case the kbd IC may or may not work right.

Anyway, I take it now that all bets are off for F1 until
the Dallas chip/battery is changed.  So I'll start on
that and look for a p.s.

Thanks for the tips!

I noticed there is no 387 chip installed in my MB.
I have one, I forget whether it does much good or not
in 386 vintage machines.  Probably not... this is all
just a curiosity machine anyway.

I'm also assuming that there is not a lot of charm
to the LCD display version, or am I wrong here?

DC


--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> >
> My apologies, DC,
> 
> I should clarify. It is the config 02 code that tells you the CMOS battery in the 1287A is dead. The F1 key, however, is a different matter. When the CMOS battery is dead, F1 may or may not work. Part of the problem is that when the CMOS battery is dead, then the config data for the HDD cannot be accessed from CMOS. When that happens, the computer cannot recognize the HDD, and if you are trying to boot from the hard drive, the computer won't boot, giving you a failure warning of no OS. You should still be able to boot from a floppy, but possibly depending on which OS (Anywhere from DOS 3.1 to DOS 6.22, though I am not completely sure of this), the F1 key may give you a different response as to the problem, or none at all. I have found it to happen haphazardly with the units I encountered, and have yet to figure out why there are different responses or none at all.
>
> The silver PS is standard, but not the only one out there. I possess several of those and the other standard black ones. They have slightly different power ratings. I forget which is which at the moment.
>
> Phil
>
>
> > Thanks Phil.
> >
> > Yes forgot to differentiate the P.S., fortunately
> > its the EXTERNAL one.  Everything internal looks in
> > order.
> >
> > And yes, I have your docs, thanks again!
> >
> > Just to be clear, is the failure to recognize the F1 key
> > also symptomatic of the Dallas chip being dead?
> > I can understand the config info being corrupt hence
> > the 02 code but on other MBs when the MB battery is
> > dead the F1 key still functions.
> >
> > I'm curious about the external PS.
> > It is all silver and has writing on it that it fits a
> > a number of different GRiDs. Was this some sort of
> > GRiD replacement P.S.?
> >
> > Thanks in advance,
> > DC
>

Yahoo! Message number: 2539
Date: Wed, 01 Aug 2012 12:44:12 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
I'm supposing I can replace these.
Any identification tips welcome, thanks.
There appears to be two of the same caps, would replace both
of course.

DC

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I am considering tackling the repair of a 1530 that
> does not respond to the power switch.  The power supply
> module measures 16.35v so I think its fine (unfortunately,
> that would have been an easy problem isolation!)
> So its something internal.  I have the service manuals
> downloaded but I thought maybe I'd get some pointers form
> folks who have already performed cold stone dead diagnosis.
>
> If I don't dive into this FYI this very clean 1530 will
> be available for parts/repair!
>
> Thanks in advance,
> DC
>

Yahoo! Message number: 2540
Date: Wed, 01 Aug 2012 14:20:49 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Good Find, DC

I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> I'm supposing I can replace these.
> Any identification tips welcome, thanks.
> There appears to be two of the same caps, would replace both
> of course.
>
> DC
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I am considering tackling the repair of a 1530 that
> > does not respond to the power switch.  The power supply
> > module measures 16.35v so I think its fine (unfortunately,
> > that would have been an easy problem isolation!)
> > So its something internal.  I have the service manuals
> > downloaded but I thought maybe I'd get some pointers form
> > folks who have already performed cold stone dead diagnosis.
> >
> > If I don't dive into this FYI this very clean 1530 will
> > be available for parts/repair!
> >
> > Thanks in advance,
> > DC
> >
>

Yahoo! Message number: 2541
Date: Wed, 01 Aug 2012 14:54:58 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Very interesting, DC

That might explain some of the other aberrant behavior, as I have also found that some units with dead CMOS batteries will boot from their floppy drives, and some will not. As you said, the schematic would most certainly help.

As you noted, replacing the 1287A chip is key. Now let me advise you on this. DO NOT use the 12887A that Dallas Semiconductor promotes as the replacement for the old 1287A, which is no longer made. The 12887A has a CMOS memory of 128 bytes of RAM. This is double the 64 bytes of RAM in the 1287A. The BIOS of the old GRiD 1500 series of computers cannot address this expanded RAM correctly and therefore the 12887A will NOT work in these old computers. (I know. I found out the hard way.) You must get an original 1287A chip. Go with the 1287A chip and NOT the 1287, as the 1287 does not have a reset pin. Although they stopped making the 1287A more than 15 years ago or so, you can still find the chip out there for sale at different web sites. I managed to snag a healthy supply for my units as they need them, at about $15-$20 each.

The 1500 series computers did not normally come with thir math coprocessors, but as you noted can be fitted with them. Two of my 1530's have them, but they are difficult to find. The 1520's ran at 10 MHz, and the 1530's run at 12.5 MHz (half the speed of the 386 CPU's). I would recommend that if you use your 387, it should be running at least at 12.5 Mhz, although a slower speed chip may still work. There is old GRiD software out there that lets you check the 387's and let you make sure they are working correctly. I think I have the program around, but I can't think of where it is right now. It may be in the files section here on the forum from one of the other forum members.

You are correct in that the LCD versions were not that spectacular. I think this was when LCD's were first coming out and were still a little primitive in their sophisication, though I speculate. If you could find a VGA screen, I think it would look better. I have one on my original 1530, but I've yet to find another anywhere else.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> OK, just a guess here, would need a schematic to verify...
> but here goes:
> The battery is involved with the Vcc of the keyboard chip.
> When the battery cold stone dead the keyboard chip is
> unpowered but depending on the particular kbd chip, it may
> or may not power up sufficiently through other pins of the chip
> to run.  I used to see chips sometimes power up through
> their other interface pins when testing power consumption
> at a silicon manufacturer on ethernet phy ICs.
> That would explain perhaps why some boards respond to F1 and
> some don't.  Without some help from the battery in this
> case the kbd IC may or may not work right.
> 
> Anyway, I take it now that all bets are off for F1 until
> the Dallas chip/battery is changed.  So I'll start on
> that and look for a p.s.
>
> Thanks for the tips!
>
> I noticed there is no 387 chip installed in my MB.
> I have one, I forget whether it does much good or not
> in 386 vintage machines.  Probably not... this is all
> just a curiosity machine anyway.
> 
> I'm also assuming that there is not a lot of charm
> to the LCD display version, or am I wrong here?
>
> DC
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > >
> > My apologies, DC,
> >
> > I should clarify. It is the config 02 code that tells you the CMOS battery in the 1287A is dead. The F1 key, however, is a different matter. When the CMOS battery is dead, F1 may or may not work. Part of the problem is that when the CMOS battery is dead, then the config data for the HDD cannot be accessed from CMOS. When that happens, the computer cannot recognize the HDD, and if you are trying to boot from the hard drive, the computer won't boot, giving you a failure warning of no OS. You should still be able to boot from a floppy, but possibly depending on which OS (Anywhere from DOS 3.1 to DOS 6.22, though I am not completely sure of this), the F1 key may give you a different response as to the problem, or none at all. I have found it to happen haphazardly with the units I encountered, and have yet to figure out why there are different responses or none at all.
> >
> > The silver PS is standard, but not the only one out there. I possess several of those and the other standard black ones. They have slightly different power ratings. I forget which is which at the moment.
> >
> > Phil
> >
> >
> > > Thanks Phil.
> > >
> > > Yes forgot to differentiate the P.S., fortunately
> > > its the EXTERNAL one.  Everything internal looks in
> > > order.
> > >
> > > And yes, I have your docs, thanks again!
> > >
> > > Just to be clear, is the failure to recognize the F1 key
> > > also symptomatic of the Dallas chip being dead?
> > > I can understand the config info being corrupt hence
> > > the 02 code but on other MBs when the MB battery is
> > > dead the F1 key still functions.
> > >
> > > I'm curious about the external PS.
> > > It is all silver and has writing on it that it fits a
> > > a number of different GRiDs. Was this some sort of
> > > GRiD replacement P.S.?
> > >
> > > Thanks in advance,
> > > DC
> >
>

Yahoo! Message number: 2542
Date: Wed, 01 Aug 2012 12:04:58 -0400
From: "Len.C"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=ISO-8859-1; format=flowed

Well now that I found the pictures its easy to identify that cap, the 
type I am not sure but it is marked 16micorfarad, but then has an X2 on 
it and its 250volt.  How many leads are on it?

Now the worst part about OLD electronics is that these caps, 
electrolytics, are OLD they are DRYING OUT, or DRIED OUT, most likely 
the later.  I would find any electrolytic on the power supply and 
replace them.  I don't care how good they look, replace it, remember to 
observe polarity.  That is a high speed switching power supply, caps 
will be very important in it for the supply to work properly, your bad 
one there, well it looks like it is just part of the AC input filter so 
it maybe be bypassed, the problem might be finding a replacement that is 
going to fit in there.  That could be all that is wrong with it for the 
time being but looks like it took a surge.  You might be able to find 
something in a newer power supply for a laptop or even a desktop.

But everyone needs to be thinking what are these things worth to keep 
using them?  Can YOU replace the caps in your power supplies? What about 
in the computer itself as sooner or later they will start to go as they 
will be dried out.  I am not trying to be negative here just a reality 
check and its not just these things this is happening to.


On 8/1/2012 10:20 AM, jeriddian wrote:
>
> Good Find, DC
>
> I guess they got burnt to the point where you can't identify the 
> capcity amount. Could you give me the output voltage and amperage? 
> I'll look through my units and see if I can identify them for you.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@..." 
> <doug@...> wrote:
> >
> > I posted pictures of what looks like a failed cap in the ext p.s. 
> unit. A stinky melt down!
> > I'm supposing I can replace these.
> > Any identification tips welcome, thanks.
> > There appears to be two of the same caps, would replace both
> > of course.
> >
> > DC
> >
> > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > >
> > > I am considering tackling the repair of a 1530 that
> > > does not respond to the power switch. The power supply
> > > module measures 16.35v so I think its fine (unfortunately,
> > > that would have been an easy problem isolation!)
> > > So its something internal. I have the service manuals
> > > downloaded but I thought maybe I'd get some pointers form
> > > folks who have already performed cold stone dead diagnosis.
> > >
> > > If I don't dive into this FYI this very clean 1530 will
> > > be available for parts/repair!
> > >
> > > Thanks in advance,
> > > DC
> > >
> >
>
> 

Yahoo! Message number: 2543
Date: Wed, 01 Aug 2012 16:49:18 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

There are two in there that are the same.
.15uF 250V I think I can replace them.
Polyprop I think. Radial type in a square package.
The bottom is clear so you can see the radial shape.
I have them out already.
Thanks for the tip on the 1287A

DC


--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Good Find, DC
>
> I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > I'm supposing I can replace these.
> > Any identification tips welcome, thanks.
> > There appears to be two of the same caps, would replace both
> > of course.
> >
> > DC
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I am considering tackling the repair of a 1530 that
> > > does not respond to the power switch.  The power supply
> > > module measures 16.35v so I think its fine (unfortunately,
> > > that would have been an easy problem isolation!)
> > > So its something internal.  I have the service manuals
> > > downloaded but I thought maybe I'd get some pointers form
> > > folks who have already performed cold stone dead diagnosis.
> > > 
> > > If I don't dive into this FYI this very clean 1530 will
> > > be available for parts/repair!
> > >
> > > Thanks in advance,
> > > DC
> > >
> >
>

Yahoo! Message number: 2544
Date: Thu, 02 Aug 2012 14:58:16 -0000
From: "fullsizewagon"
Subject: Re: Typical 1500 series failure modes?

Notice that's 250V AC, not DC, which makes a big difference. The X2 also signifies they're an enhanced type meant to go directly across the mains. Be sure to get X2 rated replacements.
The PSU will work without those cap's in place, but will radiate more interference/noise out onto the mains.

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> There are two in there that are the same.
> .15uF 250V I think I can replace them.
> Polyprop I think. Radial type in a square package.
> The bottom is clear so you can see the radial shape.
> I have them out already.
> Thanks for the tip on the 1287A
>
> DC
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Good Find, DC
> >
> > I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > > I'm supposing I can replace these.
> > > Any identification tips welcome, thanks.
> > > There appears to be two of the same caps, would replace both
> > > of course.
> > >
> > > DC
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > I am considering tackling the repair of a 1530 that
> > > > does not respond to the power switch.  The power supply
> > > > module measures 16.35v so I think its fine (unfortunately,
> > > > that would have been an easy problem isolation!)
> > > > So its something internal.  I have the service manuals
> > > > downloaded but I thought maybe I'd get some pointers form
> > > > folks who have already performed cold stone dead diagnosis.
> > > >
> > > > If I don't dive into this FYI this very clean 1530 will
> > > > be available for parts/repair!
> > > >
> > > > Thanks in advance,
> > > > DC
> > > >
> > >
> >
>

Yahoo! Message number: 2545
Date: Thu, 02 Aug 2012 21:46:42 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Thanks so much that was great info.  I had no idea on the X2
being a rating.  May have to try it without them just to
make sure the rest of it is still good.

--- In RuGRiD-Laptop@yahoogroups.com, "fullsizewagon" <andrebakken@...> wrote:
>
> Notice that's 250V AC, not DC, which makes a big difference. The X2 also signifies they're an enhanced type meant to go directly across the mains. Be sure to get X2 rated replacements.
> The PSU will work without those cap's in place, but will radiate more interference/noise out onto the mains.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > There are two in there that are the same.
> > .15uF 250V I think I can replace them.
> > Polyprop I think. Radial type in a square package.
> > The bottom is clear so you can see the radial shape.
> > I have them out already.
> > Thanks for the tip on the 1287A
> >
> > DC
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Good Find, DC
> > >
> > > I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > > > I'm supposing I can replace these.
> > > > Any identification tips welcome, thanks.
> > > > There appears to be two of the same caps, would replace both
> > > > of course.
> > > >
> > > > DC
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > I am considering tackling the repair of a 1530 that
> > > > > does not respond to the power switch.  The power supply
> > > > > module measures 16.35v so I think its fine (unfortunately,
> > > > > that would have been an easy problem isolation!)
> > > > > So its something internal.  I have the service manuals
> > > > > downloaded but I thought maybe I'd get some pointers form
> > > > > folks who have already performed cold stone dead diagnosis.
> > > > >
> > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > be available for parts/repair!
> > > > >
> > > > > Thanks in advance,
> > > > > DC
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2546
Date: Tue, 11 Sep 2012 03:48:14 -0700 (PDT)
From: Shawnerz
Subject: Bill Moggridge, Designer of the Grid Compass, Dies
text/plain; charset=iso-8859-1

All,
If you haven't seen it elsewhere yet:
�
http://www.pcworld.com/article/262089/rip_bill_moggridge_design_father_of_the_laptop.html
�
Same article but with video tribute and picture of Grid Compass on the Space Shuttle:
http://news.cnet.com/8301-10797_3-57509168-235/bill-moggridge-early-laptop-designer-dies-at-age-69/?utm_source=twitterfeed&utm_medium=twitter
�
Same article but photo of astronaut John Creighton says GRID stands for "Graphical Retreival Information Display."
I'd never heard that.� I wonder if this is the government name that NASA gave the Grid.
�
Enjoy,
-Shawn

Yahoo! Message number: 2547
Date: Mon, 1 Oct 2012 23:39:43 -0400
From: robert
Subject: bunch of grid parts for sale
text/plain; charset=ISO-8859-1

hey guys, just listed a bunch of grid parts on ebay. opening bid is
reasonable and i will combine shipping. USA sales only. (sorry, i'm lazy
and hate doing paperwork)

i will be listing more stuff as i find it. i had tons of stuff stashed away
and have forgotten what i had. i need to trim down my collection of
collections. the only grid i will be keeping is my NASA GRiD which is not
for sale. :-)

i will be listing all on ebay as part of a big clearance sale. had to empty
a semi filled with my crap that sat in my dads shop. keep an eye on the
username for more sh.. i mean stuff.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140860364798

-- 


73 de ke4mcl
"contesting on ham radio is like racing ford pintos, win or lose, other
people are still gonna laugh at you!"

Yahoo! Message number: 2548
Date: Mon, 1 Oct 2012 21:27:28 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] bunch of grid parts for sale
text/plain; charset=us-ascii

Thanks for letting us know. :)

 

________________________________
 From: robert <dcat4955@...>
To: RuGRiD-Laptop@yahoogroups.com 
Sent: Monday, October 1, 2012 11:39 PM
Subject: [RuGRiD-Laptop] bunch of grid parts for sale
  

  


hey guys, just listed a bunch of grid parts on ebay. opening bid is reasonable and i will combine shipping. USA sales only. (sorry, i'm lazy and hate doing paperwork)

i will be listing more stuff as i find it. i had tons of stuff stashed away and have forgotten what i had. i need to trim down my collection of collections. the only grid i will be keeping is my NASA GRiD which is not for sale. :-)

i will be listing all on ebay as part of a big clearance sale. had to empty a semi filled with my crap that sat in my dads shop. keep an eye on the username for more sh.. i mean stuff.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140860364798

-- 


73 de ke4mcl
"contesting on ham radio is like racing ford pintos, win or lose, other people are still gonna laugh at you!"



  

Yahoo! Message number: 2549
Date: Thu, 04 Oct 2012 12:12:50 -0000
From: "Androgenoide"
Subject: Re: bunch of grid parts for sale

When you get around to digging up the one that came with the smashed plasma display I might be interested in the high voltage power supply that runs it...








--- In RuGRiD-Laptop@yahoogroups.com, robert <dcat4955@...> wrote:
>
> hey guys, just listed a bunch of grid parts on ebay. opening bid is
> reasonable and i will combine shipping. USA sales only. (sorry, i'm lazy
> and hate doing paperwork)
>
> i will be listing more stuff as i find it. i had tons of stuff stashed away
> and have forgotten what i had. i need to trim down my collection of
> collections. the only grid i will be keeping is my NASA GRiD which is not
> for sale. :-)
>
> i will be listing all on ebay as part of a big clearance sale. had to empty
> a semi filled with my crap that sat in my dads shop. keep an eye on the
> username for more sh.. i mean stuff.
>
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140860364798
>
> --
>
>
> 73 de ke4mcl
> "contesting on ham radio is like racing ford pintos, win or lose, other
> people are still gonna laugh at you!"
>

Yahoo! Message number: 2550
Date: Mon, 08 Oct 2012 01:06:23 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

It runs! Hard Disk is GOOD.
I did a DS1287 hack to the machine today and ran the wires to a convenient place for the battery.  Upon power up it said
that the RTC was stopped, and it needed setting.
The "stopped" message threw me, I thought something was wrong with
the chip.  It took an F1 to continue and went right through POST and Autoexec.
Using TIME and DATE in the GRIDUTIL directory set the RTC.
Now it boots cleanly.
Has Lotus123 on the HD.
I posted updated pics in "Dougs 1530 stuff"... page 2!
The only remaining issue is that a few keys on the keyboard
don't work. 123Q and spacebar.  From an external kbd everything
works.
Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a half full 10MB hard disk and 3.5" floppy.  Some smokin' system!


--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Thanks so much that was great info.  I had no idea on the X2
> being a rating.  May have to try it without them just to
> make sure the rest of it is still good.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "fullsizewagon" <andrebakken@> wrote:
> >
> > Notice that's 250V AC, not DC, which makes a big difference. The X2 also signifies they're an enhanced type meant to go directly across the mains. Be sure to get X2 rated replacements.
> > The PSU will work without those cap's in place, but will radiate more interference/noise out onto the mains.
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > There are two in there that are the same.
> > > .15uF 250V I think I can replace them.
> > > Polyprop I think. Radial type in a square package.
> > > The bottom is clear so you can see the radial shape.
> > > I have them out already.
> > > Thanks for the tip on the 1287A
> > >
> > > DC
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > Good Find, DC
> > > >
> > > > I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
> > > >
> > > > Phil
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > > > > I'm supposing I can replace these.
> > > > > Any identification tips welcome, thanks.
> > > > > There appears to be two of the same caps, would replace both
> > > > > of course.
> > > > >
> > > > > DC
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > I am considering tackling the repair of a 1530 that
> > > > > > does not respond to the power switch.  The power supply
> > > > > > module measures 16.35v so I think its fine (unfortunately,
> > > > > > that would have been an easy problem isolation!)
> > > > > > So its something internal.  I have the service manuals
> > > > > > downloaded but I thought maybe I'd get some pointers form
> > > > > > folks who have already performed cold stone dead diagnosis.
> > > > > >
> > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > be available for parts/repair!
> > > > > >
> > > > > > Thanks in advance,
> > > > > > DC
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2551
Date: Mon, 08 Oct 2012 01:28:49 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Great job, Doug!

Isn't it nice when you manage to salvage one of these beautiful machines? And yep, that's the way it works.

Once you restore battery power to the 1287A, the CMOS registers are again active. It's just that they're filled with nonsense, so the computer tells you the clock had stopped (which it did), and simply prompts you to reset the time. Once you do that and reboot, everything's hunky-dory.

You can probably find some more 256K sticks somewhere and upgrade the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to hear the HDD is good too.

I recently got a great deal. There was a 1520 on sale on ebay that I looked at, however it was strange. It was definitely branded a 1520, and advertised that way, but the flip up screen said it was a 386 machine. I decided to get it, and it was only about $90 with shipping. When I got the machine, I was very excited when it began to post, because I got a full 8MB of RAM! It of course displayed the configuration error 02 indicating the CMOS battery was dead. So I opened it up. Unfortunately, it was also a DS1287A model, but that was no big deal. I decided to replace the DS1287A as I had a spare. Imagine my surprise and joy when I took the keyboard off to discover that not only was this really a 386 machine (a 1530), but it also had the math coprocessor 30387 chip as well! I replaced the 1287A and this solved the configuration error just fine. But alas, I didn't get a triple crown winner here. The Conner drive was definitely dead. But heck, getting another HDD is easy compared to the other benefits! The original owner of this machine definitely took care of it.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> It runs! Hard Disk is GOOD.
> I did a DS1287 hack to the machine today and ran the wires to a convenient place for the battery.  Upon power up it said
> that the RTC was stopped, and it needed setting.
> The "stopped" message threw me, I thought something was wrong with
> the chip.  It took an F1 to continue and went right through POST and Autoexec.
> Using TIME and DATE in the GRIDUTIL directory set the RTC.
> Now it boots cleanly.
> Has Lotus123 on the HD.
> I posted updated pics in "Dougs 1530 stuff"... page 2!
> The only remaining issue is that a few keys on the keyboard
> don't work. 123Q and spacebar.  From an external kbd everything
> works.
> Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a half full 10MB hard disk and 3.5" floppy.  Some smokin' system!
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > Thanks so much that was great info.  I had no idea on the X2
> > being a rating.  May have to try it without them just to
> > make sure the rest of it is still good.
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "fullsizewagon" <andrebakken@> wrote:
> > >
> > > Notice that's 250V AC, not DC, which makes a big difference. The X2 also signifies they're an enhanced type meant to go directly across the mains. Be sure to get X2 rated replacements.
> > > The PSU will work without those cap's in place, but will radiate more interference/noise out onto the mains.
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > There are two in there that are the same.
> > > > .15uF 250V I think I can replace them.
> > > > Polyprop I think. Radial type in a square package.
> > > > The bottom is clear so you can see the radial shape.
> > > > I have them out already.
> > > > Thanks for the tip on the 1287A
> > > >
> > > > DC
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > > Good Find, DC
> > > > >
> > > > > I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
> > > > >
> > > > > Phil
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > > > > > I'm supposing I can replace these.
> > > > > > Any identification tips welcome, thanks.
> > > > > > There appears to be two of the same caps, would replace both
> > > > > > of course.
> > > > > >
> > > > > > DC
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > I am considering tackling the repair of a 1530 that
> > > > > > > does not respond to the power switch.  The power supply
> > > > > > > module measures 16.35v so I think its fine (unfortunately,
> > > > > > > that would have been an easy problem isolation!)
> > > > > > > So its something internal.  I have the service manuals
> > > > > > > downloaded but I thought maybe I'd get some pointers form
> > > > > > > folks who have already performed cold stone dead diagnosis.
> > > > > > >
> > > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > > be available for parts/repair!
> > > > > > >
> > > > > > > Thanks in advance,
> > > > > > > DC
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2552
Date: Mon, 08 Oct 2012 03:56:55 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Like the hack job? :O

Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
Should I take the kbd apart and clean it (will that likely
fix it?) or look for a replacement?

So what can I do with this thing if I put more mem in it?
Its all accessed funky through expaned mem methods, isn't it?
I have a coprocessor I could put in this but not sure of
the point there.

I think I might like to accomplish getting it on the web.
I'd need the LAN hardware I guess.
Any other ideas?

Oh yeah, one other funny thing.  The P.S. has two contact on
it that mate inside the cavity.  But one of the two spring contacts
inside is "rubberized", so only the one contact hits metal to metal.
So the P.S. only works using the cord to go from the P.S. into the
radial DC jack.  Strange?

DC
--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Great job, Doug!
>
> Isn't it nice when you manage to salvage one of these beautiful machines? And yep, that's the way it works.
>
> Once you restore battery power to the 1287A, the CMOS registers are again active. It's just that they're filled with nonsense, so the computer tells you the clock had stopped (which it did), and simply prompts you to reset the time. Once you do that and reboot, everything's hunky-dory.
>
> You can probably find some more 256K sticks somewhere and upgrade the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to hear the HDD is good too.
>
> I recently got a great deal. There was a 1520 on sale on ebay that I looked at, however it was strange. It was definitely branded a 1520, and advertised that way, but the flip up screen said it was a 386 machine. I decided to get it, and it was only about $90 with shipping. When I got the machine, I was very excited when it began to post, because I got a full 8MB of RAM! It of course displayed the configuration error 02 indicating the CMOS battery was dead. So I opened it up. Unfortunately, it was also a DS1287A model, but that was no big deal. I decided to replace the DS1287A as I had a spare. Imagine my surprise and joy when I took the keyboard off to discover that not only was this really a 386 machine (a 1530), but it also had the math coprocessor 30387 chip as well! I replaced the 1287A and this solved the configuration error just fine. But alas, I didn't get a triple crown winner here. The Conner drive was definitely dead. But heck, getting another HDD is easy compared to the other benefits! The original owner of this machine definitely took care of it.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > It runs! Hard Disk is GOOD.
> > I did a DS1287 hack to the machine today and ran the wires to a convenient place for the battery.  Upon power up it said
> > that the RTC was stopped, and it needed setting.
> > The "stopped" message threw me, I thought something was wrong with
> > the chip.  It took an F1 to continue and went right through POST and Autoexec.
> > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > Now it boots cleanly.
> > Has Lotus123 on the HD.
> > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > The only remaining issue is that a few keys on the keyboard
> > don't work. 123Q and spacebar.  From an external kbd everything
> > works.
> > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a half full 10MB hard disk and 3.5" floppy.  Some smokin' system!
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > Thanks so much that was great info.  I had no idea on the X2
> > > being a rating.  May have to try it without them just to
> > > make sure the rest of it is still good.
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "fullsizewagon" <andrebakken@> wrote:
> > > >
> > > > Notice that's 250V AC, not DC, which makes a big difference. The X2 also signifies they're an enhanced type meant to go directly across the mains. Be sure to get X2 rated replacements.
> > > > The PSU will work without those cap's in place, but will radiate more interference/noise out onto the mains.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > There are two in there that are the same.
> > > > > .15uF 250V I think I can replace them.
> > > > > Polyprop I think. Radial type in a square package.
> > > > > The bottom is clear so you can see the radial shape.
> > > > > I have them out already.
> > > > > Thanks for the tip on the 1287A
> > > > >
> > > > > DC
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > > Good Find, DC
> > > > > >
> > > > > > I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
> > > > > >
> > > > > > Phil
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > > > > > > I'm supposing I can replace these.
> > > > > > > Any identification tips welcome, thanks.
> > > > > > > There appears to be two of the same caps, would replace both
> > > > > > > of course.
> > > > > > >
> > > > > > > DC
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > I am considering tackling the repair of a 1530 that
> > > > > > > > does not respond to the power switch.  The power supply
> > > > > > > > module measures 16.35v so I think its fine (unfortunately,
> > > > > > > > that would have been an easy problem isolation!)
> > > > > > > > So its something internal.  I have the service manuals
> > > > > > > > downloaded but I thought maybe I'd get some pointers form
> > > > > > > > folks who have already performed cold stone dead diagnosis.
> > > > > > > >
> > > > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > > > be available for parts/repair!
> > > > > > > >
> > > > > > > > Thanks in advance,
> > > > > > > > DC
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2553
Date: Mon, 08 Oct 2012 18:06:57 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Hey, if it works, and you can work the machine like it's supposed to work without it being different than before, then it's elegant engineering. :D

Yeah, its a good grab. I think what happened is that it was always a 386 machine, but someone at the factory slapped a "model 1520" sticker on the screen display accidently. The orignal owner never bothered with it as it obviously made no difference in the performance of the machine. whenever he sold it, the buyer, unaware of what he had, put it up for sale as he saw it, a 1520, not realizing that the "386" on the screen meant it was really a 1530. The 8 MB RAM and the 30387 coprocessor were just gravy, and the new seller had no clue. I got very lucky. :)

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Like the hack job? :O
>
> Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> Should I take the kbd apart and clean it (will that likely
> fix it?) or look for a replacement?
>
> So what can I do with this thing if I put more mem in it?
> Its all accessed funky through expaned mem methods, isn't it?
> I have a coprocessor I could put in this but not sure of
> the point there.
>
> I think I might like to accomplish getting it on the web.
> I'd need the LAN hardware I guess.
> Any other ideas?
>
> Oh yeah, one other funny thing.  The P.S. has two contact on
> it that mate inside the cavity.  But one of the two spring contacts
> inside is "rubberized", so only the one contact hits metal to metal.
> So the P.S. only works using the cord to go from the P.S. into the
> radial DC jack.  Strange?
>
> DC
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Great job, Doug!
> >
> > Isn't it nice when you manage to salvage one of these beautiful machines? And yep, that's the way it works.
> >
> > Once you restore battery power to the 1287A, the CMOS registers are again active. It's just that they're filled with nonsense, so the computer tells you the clock had stopped (which it did), and simply prompts you to reset the time. Once you do that and reboot, everything's hunky-dory.
> >
> > You can probably find some more 256K sticks somewhere and upgrade the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to hear the HDD is good too.
> >
> > I recently got a great deal. There was a 1520 on sale on ebay that I looked at, however it was strange. It was definitely branded a 1520, and advertised that way, but the flip up screen said it was a 386 machine. I decided to get it, and it was only about $90 with shipping. When I got the machine, I was very excited when it began to post, because I got a full 8MB of RAM! It of course displayed the configuration error 02 indicating the CMOS battery was dead. So I opened it up. Unfortunately, it was also a DS1287A model, but that was no big deal. I decided to replace the DS1287A as I had a spare. Imagine my surprise and joy when I took the keyboard off to discover that not only was this really a 386 machine (a 1530), but it also had the math coprocessor 30387 chip as well! I replaced the 1287A and this solved the configuration error just fine. But alas, I didn't get a triple crown winner here. The Conner drive was definitely dead. But heck, getting another HDD is easy compared to the other benefits! The original owner of this machine definitely took care of it.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > It runs! Hard Disk is GOOD.
> > > I did a DS1287 hack to the machine today and ran the wires to a convenient place for the battery.  Upon power up it said
> > > that the RTC was stopped, and it needed setting.
> > > The "stopped" message threw me, I thought something was wrong with
> > > the chip.  It took an F1 to continue and went right through POST and Autoexec.
> > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > Now it boots cleanly.
> > > Has Lotus123 on the HD.
> > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > The only remaining issue is that a few keys on the keyboard
> > > don't work. 123Q and spacebar.  From an external kbd everything
> > > works.
> > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a half full 10MB hard disk and 3.5" floppy.  Some smokin' system!
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > Thanks so much that was great info.  I had no idea on the X2
> > > > being a rating.  May have to try it without them just to
> > > > make sure the rest of it is still good.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "fullsizewagon" <andrebakken@> wrote:
> > > > >
> > > > > Notice that's 250V AC, not DC, which makes a big difference. The X2 also signifies they're an enhanced type meant to go directly across the mains. Be sure to get X2 rated replacements.
> > > > > The PSU will work without those cap's in place, but will radiate more interference/noise out onto the mains.
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > There are two in there that are the same.
> > > > > > .15uF 250V I think I can replace them.
> > > > > > Polyprop I think. Radial type in a square package.
> > > > > > The bottom is clear so you can see the radial shape.
> > > > > > I have them out already.
> > > > > > Thanks for the tip on the 1287A
> > > > > >
> > > > > > DC
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > >
> > > > > > > Good Find, DC
> > > > > > >
> > > > > > > I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > > > > > > > I'm supposing I can replace these.
> > > > > > > > Any identification tips welcome, thanks.
> > > > > > > > There appears to be two of the same caps, would replace both
> > > > > > > > of course.
> > > > > > > >
> > > > > > > > DC
> > > > > > > > 
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > I am considering tackling the repair of a 1530 that
> > > > > > > > > does not respond to the power switch.  The power supply
> > > > > > > > > module measures 16.35v so I think its fine (unfortunately,
> > > > > > > > > that would have been an easy problem isolation!)
> > > > > > > > > So its something internal.  I have the service manuals
> > > > > > > > > downloaded but I thought maybe I'd get some pointers form
> > > > > > > > > folks who have already performed cold stone dead diagnosis.
> > > > > > > > >
> > > > > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > > > > be available for parts/repair!
> > > > > > > > >
> > > > > > > > > Thanks in advance,
> > > > > > > > > DC
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2554
Date: Tue, 09 Oct 2012 02:04:06 -0000
From: "Androgenoide"
Subject: Re: Typical 1500 series failure modes?

I used a Xircom PE3 Ethernet adapter.   It converts the parallel port to a NIC... although I've been wondering lately if it might not have made equally good sense to use a device server on the serial port...?  And, of course, the Arachne browser... not many choices for a DOS browser are there?  I used it to check my Yahoo web mail and I'll have to say that it gave a whole new dimension of meaning to the word "slow."  Go ahead, make a pot of tea while it's loading that page, it will be a while.

Sometimes it's fun to do things the hard way.  Ran into a web page last week of a guy who was competing with a friend to see who could force Windows XP to run with the least resources.   It won't install unless it sees at least 64MB of RAM and a Pentium processor but, once installed you can remove RAM and underclock the machine...  He said he got one machine to run with 20MB of RAM with a 20MHz clock and it took a half hour to boot.

I scored an HP 95LX a while back and someday, when I have nothing else to do (Hah!) it might be interesting to see if I can get online with a half meg of RAM and a 1MHz processor... (maybe that Contiki OS/browser could be ported to a 95LX?)... or maybe not...










--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Like the hack job? :O
>
> Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> Should I take the kbd apart and clean it (will that likely
> fix it?) or look for a replacement?
>
> So what can I do with this thing if I put more mem in it?
> Its all accessed funky through expaned mem methods, isn't it?
> I have a coprocessor I could put in this but not sure of
> the point there.
>
> I think I might like to accomplish getting it on the web.
> I'd need the LAN hardware I guess.
> Any other ideas?
>
> Oh yeah, one other funny thing.  The P.S. has two contact on
> it that mate inside the cavity.  But one of the two spring contacts
> inside is "rubberized", so only the one contact hits metal to metal.
> So the P.S. only works using the cord to go from the P.S. into the
> radial DC jack.  Strange?
>
> DC
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Great job, Doug!
> >
> > Isn't it nice when you manage to salvage one of these beautiful machines? And yep, that's the way it works.
> >
> > Once you restore battery power to the 1287A, the CMOS registers are again active. It's just that they're filled with nonsense, so the computer tells you the clock had stopped (which it did), and simply prompts you to reset the time. Once you do that and reboot, everything's hunky-dory.
> >
> > You can probably find some more 256K sticks somewhere and upgrade the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to hear the HDD is good too.
> >
> > I recently got a great deal. There was a 1520 on sale on ebay that I looked at, however it was strange. It was definitely branded a 1520, and advertised that way, but the flip up screen said it was a 386 machine. I decided to get it, and it was only about $90 with shipping. When I got the machine, I was very excited when it began to post, because I got a full 8MB of RAM! It of course displayed the configuration error 02 indicating the CMOS battery was dead. So I opened it up. Unfortunately, it was also a DS1287A model, but that was no big deal. I decided to replace the DS1287A as I had a spare. Imagine my surprise and joy when I took the keyboard off to discover that not only was this really a 386 machine (a 1530), but it also had the math coprocessor 30387 chip as well! I replaced the 1287A and this solved the configuration error just fine. But alas, I didn't get a triple crown winner here. The Conner drive was definitely dead. But heck, getting another HDD is easy compared to the other benefits! The original owner of this machine definitely took care of it.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > It runs! Hard Disk is GOOD.
> > > I did a DS1287 hack to the machine today and ran the wires to a convenient place for the battery.  Upon power up it said
> > > that the RTC was stopped, and it needed setting.
> > > The "stopped" message threw me, I thought something was wrong with
> > > the chip.  It took an F1 to continue and went right through POST and Autoexec.
> > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > Now it boots cleanly.
> > > Has Lotus123 on the HD.
> > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > The only remaining issue is that a few keys on the keyboard
> > > don't work. 123Q and spacebar.  From an external kbd everything
> > > works.
> > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a half full 10MB hard disk and 3.5" floppy.  Some smokin' system!
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > Thanks so much that was great info.  I had no idea on the X2
> > > > being a rating.  May have to try it without them just to
> > > > make sure the rest of it is still good.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "fullsizewagon" <andrebakken@> wrote:
> > > > >
> > > > > Notice that's 250V AC, not DC, which makes a big difference. The X2 also signifies they're an enhanced type meant to go directly across the mains. Be sure to get X2 rated replacements.
> > > > > The PSU will work without those cap's in place, but will radiate more interference/noise out onto the mains.
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > There are two in there that are the same.
> > > > > > .15uF 250V I think I can replace them.
> > > > > > Polyprop I think. Radial type in a square package.
> > > > > > The bottom is clear so you can see the radial shape.
> > > > > > I have them out already.
> > > > > > Thanks for the tip on the 1287A
> > > > > >
> > > > > > DC
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > >
> > > > > > > Good Find, DC
> > > > > > >
> > > > > > > I guess they got burnt to the point where you can't identify the capcity amount. Could you give me the output voltage and amperage? I'll look through my units and see if I can identify them for you.
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > I posted pictures of what looks like a failed cap in the ext p.s. unit. A stinky melt down!
> > > > > > > > I'm supposing I can replace these.
> > > > > > > > Any identification tips welcome, thanks.
> > > > > > > > There appears to be two of the same caps, would replace both
> > > > > > > > of course.
> > > > > > > >
> > > > > > > > DC
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > I am considering tackling the repair of a 1530 that
> > > > > > > > > does not respond to the power switch.  The power supply
> > > > > > > > > module measures 16.35v so I think its fine (unfortunately,
> > > > > > > > > that would have been an easy problem isolation!)
> > > > > > > > > So its something internal.  I have the service manuals
> > > > > > > > > downloaded but I thought maybe I'd get some pointers form
> > > > > > > > > folks who have already performed cold stone dead diagnosis.
> > > > > > > > >
> > > > > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > > > > be available for parts/repair!
> > > > > > > > >
> > > > > > > > > Thanks in advance,
> > > > > > > > > DC
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2555
Date: Fri, 12 Oct 2012 02:14:32 -0700
From: jim s
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=ISO-8859-1; format=flowed

On 10/8/2012 7:04 PM, Androgenoide wrote:
>
> I used a Xircom PE3 Ethernet adapter. It converts the parallel port to 
> a NIC... although I've been wondering lately if it might not have made 
> equally good sense to use a device server on the serial port...? And, 
> of course, the Arachne browser... not many choices for a DOS browser 
> are there? I used it to check my Yahoo web mail and I'll have to say 
> that it gave a whole new dimension of meaning to the word "slow." Go 
> ahead, make a pot of tea while it's loading that page, it will be a while.
>
> Sometimes it's fun to do things the hard way. Ran into a web page last 
> week of a guy who was competing with a friend to see who could force 
> Windows XP to run with the least resources. It won't install unless it 
> sees at least 64MB of RAM and a Pentium processor but, once installed 
> you can remove RAM and underclock the machine... He said he got one 
> machine to run with 20MB of RAM with a 20MHz clock and it took a half 
> hour to boot.
>
> I scored an HP 95LX a while back and someday, when I have nothing else 
> to do (Hah!) it might be interesting to see if I can get online with a 
> half meg of RAM and a 1MHz processor... (maybe that Contiki OS/browser 
> could be ported to a 95LX?)... or maybe not...
>
> --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@..." 
> <doug@...> wrote:
> >
> > Like the hack job? :O
> >
> > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> > Should I take the kbd apart and clean it (will that likely
> > fix it?) or look for a replacement?
> >
> > So what can I do with this thing if I put more mem in it?
> > Its all accessed funky through expaned mem methods, isn't it?
> > I have a coprocessor I could put in this but not sure of
> > the point there.
> >
> > I think I might like to accomplish getting it on the web.
> > I'd need the LAN hardware I guess.
> > Any other ideas?
> >
> > Oh yeah, one other funny thing. The P.S. has two contact on
> > it that mate inside the cavity. But one of the two spring contacts
> > inside is "rubberized", so only the one contact hits metal to metal.
> > So the P.S. only works using the cord to go from the P.S. into the
> > radial DC jack. Strange?
> >
> > DC
> > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Great job, Doug!
> > >
> > > Isn't it nice when you manage to salvage one of these beautiful 
> machines? And yep, that's the way it works.
> > >
> > > Once you restore battery power to the 1287A, the CMOS registers 
> are again active. It's just that they're filled with nonsense, so the 
> computer tells you the clock had stopped (which it did), and simply 
> prompts you to reset the time. Once you do that and reboot, 
> everything's hunky-dory.
> > >
> > > You can probably find some more 256K sticks somewhere and upgrade 
> the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to 
> hear the HDD is good too.
> > >
> > > I recently got a great deal. There was a 1520 on sale on ebay that 
> I looked at, however it was strange. It was definitely branded a 1520, 
> and advertised that way, but the flip up screen said it was a 386 
> machine. I decided to get it, and it was only about $90 with shipping. 
> When I got the machine, I was very excited when it began to post, 
> because I got a full 8MB of RAM! It of course displayed the 
> configuration error 02 indicating the CMOS battery was dead. So I 
> opened it up. Unfortunately, it was also a DS1287A model, but that was 
> no big deal. I decided to replace the DS1287A as I had a spare. 
> Imagine my surprise and joy when I took the keyboard off to discover 
> that not only was this really a 386 machine (a 1530), but it also had 
> the math coprocessor 30387 chip as well! I replaced the 1287A and this 
> solved the configuration error just fine. But alas, I didn't get a 
> triple crown winner here. The Conner drive was definitely dead. But 
> heck, getting another HDD is easy compared to the other benefits! The 
> original owner of this machine definitely took care of it.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > >
> > > > It runs! Hard Disk is GOOD.
> > > > I did a DS1287 hack to the machine today and ran the wires to a 
> convenient place for the battery. Upon power up it said
> > > > that the RTC was stopped, and it needed setting.
> > > > The "stopped" message threw me, I thought something was wrong with
> > > > the chip. It took an F1 to continue and went right through POST 
> and Autoexec.
> > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > Now it boots cleanly.
> > > > Has Lotus123 on the HD.
> > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > The only remaining issue is that a few keys on the keyboard
> > > > don't work. 123Q and spacebar. From an external kbd everything
> > > > works.
> > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a 
> half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > Thanks so much that was great info. I had no idea on the X2
> > > > > being a rating. May have to try it without them just to
> > > > > make sure the rest of it is still good.
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon" 
> <andrebakken@> wrote:
> > > > > >
> > > > > > Notice that's 250V AC, not DC, which makes a big difference. 
> The X2 also signifies they're an enhanced type meant to go directly 
> across the mains. Be sure to get X2 rated replacements.
> > > > > > The PSU will work without those cap's in place, but will 
> radiate more interference/noise out onto the mains.
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > There are two in there that are the same.
> > > > > > > .15uF 250V I think I can replace them.
> > > > > > > Polyprop I think. Radial type in a square package.
> > > > > > > The bottom is clear so you can see the radial shape.
> > > > > > > I have them out already.
> > > > > > > Thanks for the tip on the 1287A
> > > > > > >
> > > > > > > DC
> > > > > > >
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > > > > > >
> > > > > > > > Good Find, DC
> > > > > > > >
> > > > > > > > I guess they got burnt to the point where you can't 
> identify the capcity amount. Could you give me the output voltage and 
> amperage? I'll look through my units and see if I can identify them 
> for you.
> > > > > > > >
> > > > > > > > Phil
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > I posted pictures of what looks like a failed cap in 
> the ext p.s. unit. A stinky melt down!
> > > > > > > > > I'm supposing I can replace these.
> > > > > > > > > Any identification tips welcome, thanks.
> > > > > > > > > There appears to be two of the same caps, would 
> replace both
> > > > > > > > > of course.
> > > > > > > > >
> > > > > > > > > DC
> > > > > > > > >
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > > > >
> > > > > > > > > > I am considering tackling the repair of a 1530 that
> > > > > > > > > > does not respond to the power switch. The power supply
> > > > > > > > > > module measures 16.35v so I think its fine 
> (unfortunately,
> > > > > > > > > > that would have been an easy problem isolation!)
> > > > > > > > > > So its something internal. I have the service manuals
> > > > > > > > > > downloaded but I thought maybe I'd get some pointers 
> form
> > > > > > > > > > folks who have already performed cold stone dead 
> diagnosis.
> > > > > > > > > >
> > > > > > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > > > > > be available for parts/repair!
> > > > > > > > > >
> > > > > > > > > > Thanks in advance,
> > > > > > > > > > DC
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Since we are on the topic of TCP does anyone have a formula stashed that 
can be easily had to run say serial (probably ppp) from something like a 
small system like the raspberry pi serially to a system with dos and a 
stack?  It's been so long since I messed with dos environment networking 
I forget.

I think windows of some sort had trumpet to handle part of the equation, 
but I don' t have any references right now over a dos stack.

Probably something to do windows 3.1 or win95 / win98 would be better, 
but I don't know if the hardware here would be up to those os's.

Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm 
asking for everything here.  Objective is to have something that could 
suck off or load a disk image with a floppy boot.  I suspect it was a 
difficult thing to get going in the day, though, and even wors now.

jim
>
> ,___
>

Yahoo! Message number: 2556
Date: Fri, 12 Oct 2012 19:37:52 -0000
From: "Androgenoide"
Subject: Re: Typical 1500 series failure modes?

The only real obstacle to DOS networking with the Grid is finding an Ethernet adapter that will work through either the serial or parallel ports.   I used the Xircom on the parallel port because I had one at the time.   I've got a serial device server now that would probably work too but I've got too much going on at the moment to dig out a Grid just to see what would be required.   Either of those solutions would be limited by the speed of the ports(and the Grid itself), of course.  Gigabit speeds are out of the question!
Another thought... The guy who put together the Techworm boot disk also had one called Networm, a single floppy that could do a dialup internet connection... (if you still have access to a dialup service... if not, Budget Dial Up has a prepaid service that allows you to buy just a few hours at a time).

Generally speaking, if an old machine has either a serial or parallel port and you can get it to boot into DOS, there is always a way to transfer files to another machine.   Even if it has no floppy you can use another DOS machine running Laplink.  If it does have a floppy there are a lot of file transfer programs out there, from Kermit to the original version of Procomm that will fit on a single floppy.

The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky and would require some hardware tweaks even to make a slow machine... kind of an extreme project.   I've heard of a Linux distro that will fit on a single floppy and run on systems with limited resources (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one seems to want 4MB of RAM.

There are plenty of people on the web who have too much time on their hands and are still playing with machines even older than the Grid... You can still buy new after-market accessories for Commodores, for example, so don't assume that there are no new solutions to old problems.












--- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@...> wrote:
>
> On 10/8/2012 7:04 PM, Androgenoide wrote:
> >
> > I used a Xircom PE3 Ethernet adapter. It converts the parallel port to
> > a NIC... although I've been wondering lately if it might not have made
> > equally good sense to use a device server on the serial port...? And,
> > of course, the Arachne browser... not many choices for a DOS browser
> > are there? I used it to check my Yahoo web mail and I'll have to say
> > that it gave a whole new dimension of meaning to the word "slow." Go
> > ahead, make a pot of tea while it's loading that page, it will be a while.
> >
> > Sometimes it's fun to do things the hard way. Ran into a web page last
> > week of a guy who was competing with a friend to see who could force
> > Windows XP to run with the least resources. It won't install unless it
> > sees at least 64MB of RAM and a Pentium processor but, once installed
> > you can remove RAM and underclock the machine... He said he got one
> > machine to run with 20MB of RAM with a 20MHz clock and it took a half
> > hour to boot.
> >
> > I scored an HP 95LX a while back and someday, when I have nothing else
> > to do (Hah!) it might be interesting to see if I can get online with a
> > half meg of RAM and a 1MHz processor... (maybe that Contiki OS/browser
> > could be ported to a 95LX?)... or maybe not...
> >
> > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > <doug@> wrote:
> > >
> > > Like the hack job? :O
> > >
> > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> > > Should I take the kbd apart and clean it (will that likely
> > > fix it?) or look for a replacement?
> > >
> > > So what can I do with this thing if I put more mem in it?
> > > Its all accessed funky through expaned mem methods, isn't it?
> > > I have a coprocessor I could put in this but not sure of
> > > the point there.
> > >
> > > I think I might like to accomplish getting it on the web.
> > > I'd need the LAN hardware I guess.
> > > Any other ideas?
> > >
> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > it that mate inside the cavity. But one of the two spring contacts
> > > inside is "rubberized", so only the one contact hits metal to metal.
> > > So the P.S. only works using the cord to go from the P.S. into the
> > > radial DC jack. Strange?
> > >
> > > DC
> > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > Great job, Doug!
> > > >
> > > > Isn't it nice when you manage to salvage one of these beautiful
> > machines? And yep, that's the way it works.
> > > >
> > > > Once you restore battery power to the 1287A, the CMOS registers
> > are again active. It's just that they're filled with nonsense, so the
> > computer tells you the clock had stopped (which it did), and simply
> > prompts you to reset the time. Once you do that and reboot,
> > everything's hunky-dory.
> > > >
> > > > You can probably find some more 256K sticks somewhere and upgrade
> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to
> > hear the HDD is good too.
> > > >
> > > > I recently got a great deal. There was a 1520 on sale on ebay that
> > I looked at, however it was strange. It was definitely branded a 1520,
> > and advertised that way, but the flip up screen said it was a 386
> > machine. I decided to get it, and it was only about $90 with shipping.
> > When I got the machine, I was very excited when it began to post,
> > because I got a full 8MB of RAM! It of course displayed the
> > configuration error 02 indicating the CMOS battery was dead. So I
> > opened it up. Unfortunately, it was also a DS1287A model, but that was
> > no big deal. I decided to replace the DS1287A as I had a spare.
> > Imagine my surprise and joy when I took the keyboard off to discover
> > that not only was this really a 386 machine (a 1530), but it also had
> > the math coprocessor 30387 chip as well! I replaced the 1287A and this
> > solved the configuration error just fine. But alas, I didn't get a
> > triple crown winner here. The Conner drive was definitely dead. But
> > heck, getting another HDD is easy compared to the other benefits! The
> > original owner of this machine definitely took care of it.
> > > >
> > > > Phil
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > It runs! Hard Disk is GOOD.
> > > > > I did a DS1287 hack to the machine today and ran the wires to a
> > convenient place for the battery. Upon power up it said
> > > > > that the RTC was stopped, and it needed setting.
> > > > > The "stopped" message threw me, I thought something was wrong with
> > > > > the chip. It took an F1 to continue and went right through POST
> > and Autoexec.
> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > > Now it boots cleanly.
> > > > > Has Lotus123 on the HD.
> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > > The only remaining issue is that a few keys on the keyboard
> > > > > don't work. 123Q and spacebar. From an external kbd everything
> > > > > works.
> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a
> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > Thanks so much that was great info. I had no idea on the X2
> > > > > > being a rating. May have to try it without them just to
> > > > > > make sure the rest of it is still good.
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > <andrebakken@> wrote:
> > > > > > >
> > > > > > > Notice that's 250V AC, not DC, which makes a big difference.
> > The X2 also signifies they're an enhanced type meant to go directly
> > across the mains. Be sure to get X2 rated replacements.
> > > > > > > The PSU will work without those cap's in place, but will
> > radiate more interference/noise out onto the mains.
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > There are two in there that are the same.
> > > > > > > > .15uF 250V I think I can replace them.
> > > > > > > > Polyprop I think. Radial type in a square package.
> > > > > > > > The bottom is clear so you can see the radial shape.
> > > > > > > > I have them out already.
> > > > > > > > Thanks for the tip on the 1287A
> > > > > > > >
> > > > > > > > DC
> > > > > > > >
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > > > > > > >
> > > > > > > > > Good Find, DC
> > > > > > > > >
> > > > > > > > > I guess they got burnt to the point where you can't
> > identify the capcity amount. Could you give me the output voltage and
> > amperage? I'll look through my units and see if I can identify them
> > for you.
> > > > > > > > >
> > > > > > > > > Phil
> > > > > > > > >
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > > > >
> > > > > > > > > > I posted pictures of what looks like a failed cap in
> > the ext p.s. unit. A stinky melt down!
> > > > > > > > > > I'm supposing I can replace these.
> > > > > > > > > > Any identification tips welcome, thanks.
> > > > > > > > > > There appears to be two of the same caps, would
> > replace both
> > > > > > > > > > of course.
> > > > > > > > > >
> > > > > > > > > > DC
> > > > > > > > > >
> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > > > > >
> > > > > > > > > > > I am considering tackling the repair of a 1530 that
> > > > > > > > > > > does not respond to the power switch. The power supply
> > > > > > > > > > > module measures 16.35v so I think its fine
> > (unfortunately,
> > > > > > > > > > > that would have been an easy problem isolation!)
> > > > > > > > > > > So its something internal. I have the service manuals
> > > > > > > > > > > downloaded but I thought maybe I'd get some pointers
> > form
> > > > > > > > > > > folks who have already performed cold stone dead
> > diagnosis.
> > > > > > > > > > >
> > > > > > > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > > > > > > be available for parts/repair!
> > > > > > > > > > >
> > > > > > > > > > > Thanks in advance,
> > > > > > > > > > > DC
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> Since we are on the topic of TCP does anyone have a formula stashed that
> can be easily had to run say serial (probably ppp) from something like a
> small system like the raspberry pi serially to a system with dos and a
> stack?  It's been so long since I messed with dos environment networking
> I forget.
>
> I think windows of some sort had trumpet to handle part of the equation,
> but I don' t have any references right now over a dos stack.
>
> Probably something to do windows 3.1 or win95 / win98 would be better,
> but I don't know if the hardware here would be up to those os's.
>
> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
> asking for everything here.  Objective is to have something that could
> suck off or load a disk image with a floppy boot.  I suspect it was a
> difficult thing to get going in the day, though, and even wors now.
>
> jim
> >
> > ,___
> >
>

Yahoo! Message number: 2557
Date: Sat, 13 Oct 2012 15:10:42 -0000
From: "Androgenoide"
Subject: Re: Typical 1500 series failure modes?

Further thoughts on an OS... Microsoft says that a Win95 installation requires a 386DX, 4MB of RAM and more than 40MB of HDD but I ran into a site some years ago in which a guy described removing files one by one until he got the absolute minimum Win95 system that would still boot... it came out to about 8MB... don't remember him saying anything about RAM requirements, though.
OS/2 Warp 3 requirements are similar to Win95, as far as I know... Warp 2 or earlier might be more forgiving but I don't have a copy to examine so I can't say.

As for desktop software... it might be interesting to look for PC GEOS... a pretty full-featured office suite in a small package.












--- In RuGRiD-Laptop@yahoogroups.com, "Androgenoide" <androgenoide@...> wrote:
>
> The only real obstacle to DOS networking with the Grid is finding an Ethernet adapter that will work through either the serial or parallel ports.   I used the Xircom on the parallel port because I had one at the time.   I've got a serial device server now that would probably work too but I've got too much going on at the moment to dig out a Grid just to see what would be required.   Either of those solutions would be limited by the speed of the ports(and the Grid itself), of course.  Gigabit speeds are out of the question!
> Another thought... The guy who put together the Techworm boot disk also had one called Networm, a single floppy that could do a dialup internet connection... (if you still have access to a dialup service... if not, Budget Dial Up has a prepaid service that allows you to buy just a few hours at a time).
>
> Generally speaking, if an old machine has either a serial or parallel port and you can get it to boot into DOS, there is always a way to transfer files to another machine.   Even if it has no floppy you can use another DOS machine running Laplink.  If it does have a floppy there are a lot of file transfer programs out there, from Kermit to the original version of Procomm that will fit on a single floppy.
>
> The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky and would require some hardware tweaks even to make a slow machine... kind of an extreme project.   I've heard of a Linux distro that will fit on a single floppy and run on systems with limited resources (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one seems to want 4MB of RAM.
>
> There are plenty of people on the web who have too much time on their hands and are still playing with machines even older than the Grid... You can still buy new after-market accessories for Commodores, for example, so don't assume that there are no new solutions to old problems.
>
>
>
>
>
>
>
>
>
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> >
> > On 10/8/2012 7:04 PM, Androgenoide wrote:
> > >
> > > I used a Xircom PE3 Ethernet adapter. It converts the parallel port to
> > > a NIC... although I've been wondering lately if it might not have made
> > > equally good sense to use a device server on the serial port...? And,
> > > of course, the Arachne browser... not many choices for a DOS browser
> > > are there? I used it to check my Yahoo web mail and I'll have to say
> > > that it gave a whole new dimension of meaning to the word "slow." Go
> > > ahead, make a pot of tea while it's loading that page, it will be a while.
> > >
> > > Sometimes it's fun to do things the hard way. Ran into a web page last
> > > week of a guy who was competing with a friend to see who could force 
> > > Windows XP to run with the least resources. It won't install unless it
> > > sees at least 64MB of RAM and a Pentium processor but, once installed
> > > you can remove RAM and underclock the machine... He said he got one
> > > machine to run with 20MB of RAM with a 20MHz clock and it took a half
> > > hour to boot.
> > >
> > > I scored an HP 95LX a while back and someday, when I have nothing else
> > > to do (Hah!) it might be interesting to see if I can get online with a
> > > half meg of RAM and a 1MHz processor... (maybe that Contiki OS/browser
> > > could be ported to a 95LX?)... or maybe not...
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > <doug@> wrote:
> > > >
> > > > Like the hack job? :O
> > > >
> > > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> > > > Should I take the kbd apart and clean it (will that likely
> > > > fix it?) or look for a replacement?
> > > >
> > > > So what can I do with this thing if I put more mem in it?
> > > > Its all accessed funky through expaned mem methods, isn't it?
> > > > I have a coprocessor I could put in this but not sure of
> > > > the point there.
> > > >
> > > > I think I might like to accomplish getting it on the web.
> > > > I'd need the LAN hardware I guess.
> > > > Any other ideas?
> > > >
> > > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > > it that mate inside the cavity. But one of the two spring contacts
> > > > inside is "rubberized", so only the one contact hits metal to metal.
> > > > So the P.S. only works using the cord to go from the P.S. into the
> > > > radial DC jack. Strange?
> > > >
> > > > DC
> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > > Great job, Doug!
> > > > >
> > > > > Isn't it nice when you manage to salvage one of these beautiful
> > > machines? And yep, that's the way it works.
> > > > >
> > > > > Once you restore battery power to the 1287A, the CMOS registers
> > > are again active. It's just that they're filled with nonsense, so the
> > > computer tells you the clock had stopped (which it did), and simply
> > > prompts you to reset the time. Once you do that and reboot,
> > > everything's hunky-dory.
> > > > >
> > > > > You can probably find some more 256K sticks somewhere and upgrade
> > > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to
> > > hear the HDD is good too.
> > > > >
> > > > > I recently got a great deal. There was a 1520 on sale on ebay that
> > > I looked at, however it was strange. It was definitely branded a 1520,
> > > and advertised that way, but the flip up screen said it was a 386
> > > machine. I decided to get it, and it was only about $90 with shipping.
> > > When I got the machine, I was very excited when it began to post,
> > > because I got a full 8MB of RAM! It of course displayed the
> > > configuration error 02 indicating the CMOS battery was dead. So I
> > > opened it up. Unfortunately, it was also a DS1287A model, but that was
> > > no big deal. I decided to replace the DS1287A as I had a spare.
> > > Imagine my surprise and joy when I took the keyboard off to discover
> > > that not only was this really a 386 machine (a 1530), but it also had
> > > the math coprocessor 30387 chip as well! I replaced the 1287A and this
> > > solved the configuration error just fine. But alas, I didn't get a
> > > triple crown winner here. The Conner drive was definitely dead. But
> > > heck, getting another HDD is easy compared to the other benefits! The
> > > original owner of this machine definitely took care of it.
> > > > >
> > > > > Phil
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > It runs! Hard Disk is GOOD.
> > > > > > I did a DS1287 hack to the machine today and ran the wires to a
> > > convenient place for the battery. Upon power up it said
> > > > > > that the RTC was stopped, and it needed setting.
> > > > > > The "stopped" message threw me, I thought something was wrong with
> > > > > > the chip. It took an F1 to continue and went right through POST
> > > and Autoexec.
> > > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > > > Now it boots cleanly.
> > > > > > Has Lotus123 on the HD.
> > > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > > > The only remaining issue is that a few keys on the keyboard
> > > > > > don't work. 123Q and spacebar. From an external kbd everything
> > > > > > works.
> > > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a
> > > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > Thanks so much that was great info. I had no idea on the X2
> > > > > > > being a rating. May have to try it without them just to
> > > > > > > make sure the rest of it is still good.
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > <andrebakken@> wrote:
> > > > > > > >
> > > > > > > > Notice that's 250V AC, not DC, which makes a big difference.
> > > The X2 also signifies they're an enhanced type meant to go directly
> > > across the mains. Be sure to get X2 rated replacements.
> > > > > > > > The PSU will work without those cap's in place, but will
> > > radiate more interference/noise out onto the mains.
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > There are two in there that are the same.
> > > > > > > > > .15uF 250V I think I can replace them.
> > > > > > > > > Polyprop I think. Radial type in a square package.
> > > > > > > > > The bottom is clear so you can see the radial shape.
> > > > > > > > > I have them out already.
> > > > > > > > > Thanks for the tip on the 1287A
> > > > > > > > >
> > > > > > > > > DC
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > > > > > > > >
> > > > > > > > > > Good Find, DC
> > > > > > > > > >
> > > > > > > > > > I guess they got burnt to the point where you can't
> > > identify the capcity amount. Could you give me the output voltage and
> > > amperage? I'll look through my units and see if I can identify them
> > > for you.
> > > > > > > > > >
> > > > > > > > > > Phil
> > > > > > > > > >
> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > > > > >
> > > > > > > > > > > I posted pictures of what looks like a failed cap in
> > > the ext p.s. unit. A stinky melt down!
> > > > > > > > > > > I'm supposing I can replace these.
> > > > > > > > > > > Any identification tips welcome, thanks.
> > > > > > > > > > > There appears to be two of the same caps, would
> > > replace both
> > > > > > > > > > > of course.
> > > > > > > > > > >
> > > > > > > > > > > DC
> > > > > > > > > > >
> > > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > > > > > > > >
> > > > > > > > > > > > I am considering tackling the repair of a 1530 that
> > > > > > > > > > > > does not respond to the power switch. The power supply
> > > > > > > > > > > > module measures 16.35v so I think its fine
> > > (unfortunately,
> > > > > > > > > > > > that would have been an easy problem isolation!)
> > > > > > > > > > > > So its something internal. I have the service manuals
> > > > > > > > > > > > downloaded but I thought maybe I'd get some pointers
> > > form
> > > > > > > > > > > > folks who have already performed cold stone dead
> > > diagnosis.
> > > > > > > > > > > >
> > > > > > > > > > > > If I don't dive into this FYI this very clean 1530 will
> > > > > > > > > > > > be available for parts/repair!
> > > > > > > > > > > >
> > > > > > > > > > > > Thanks in advance,
> > > > > > > > > > > > DC
> > > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> > Since we are on the topic of TCP does anyone have a formula stashed that
> > can be easily had to run say serial (probably ppp) from something like a
> > small system like the raspberry pi serially to a system with dos and a
> > stack?  It's been so long since I messed with dos environment networking
> > I forget.
> >
> > I think windows of some sort had trumpet to handle part of the equation, 
> > but I don' t have any references right now over a dos stack.
> >
> > Probably something to do windows 3.1 or win95 / win98 would be better,
> > but I don't know if the hardware here would be up to those os's.
> >
> > Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
> > asking for everything here.  Objective is to have something that could
> > suck off or load a disk image with a floppy boot.  I suspect it was a
> > difficult thing to get going in the day, though, and even wors now.
> >
> > jim
> > >
> > > ,___
> > >
> >
>

Yahoo! Message number: 2558
Date: Sat, 13 Oct 2012 12:02:55 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

I don't think I'd even bother with the serial port.  You might get 
230,400bps out of it if it has one of the fancier UARTs, but even a 16550AFN 
will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you have 
to slow it down with CTS/RTS handshaking.  I think the standard parallel 
port will give you around 5Mbps, won't it?  Maybe a tad faster with 
IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but even 
if you could directly tie in to the ISA bus, it would be tough.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "Androgenoide" <androgenoide@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Friday, October 12, 2012 3:37 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


> The only real obstacle to DOS networking with the Grid is finding an 
> Ethernet adapter that will work through either the serial or parallel 
> ports.   I used the Xircom on the parallel port because I had one at the 
> time.   I've got a serial device server now that would probably work too 
> but I've got too much going on at the moment to dig out a Grid just to see 
> what would be required.   Either of those solutions would be limited by 
> the speed of the ports(and the Grid itself), of course.  Gigabit speeds 
> are out of the question!
> Another thought... The guy who put together the Techworm boot disk also 
> had one called Networm, a single floppy that could do a dialup internet 
> connection... (if you still have access to a dialup service... if not, 
> Budget Dial Up has a prepaid service that allows you to buy just a few 
> hours at a time).
>
> Generally speaking, if an old machine has either a serial or parallel port 
> and you can get it to boot into DOS, there is always a way to transfer 
> files to another machine.   Even if it has no floppy you can use another 
> DOS machine running Laplink.  If it does have a floppy there are a lot of 
> file transfer programs out there, from Kermit to the original version of 
> Procomm that will fit on a single floppy.
>
> The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full 
> install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky and 
> would require some hardware tweaks even to make a slow machine... kind of 
> an extreme project.   I've heard of a Linux distro that will fit on a 
> single floppy and run on systems with limited resources 
> (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one 
> seems to want 4MB of RAM.
>
> There are plenty of people on the web who have too much time on their 
> hands and are still playing with machines even older than the Grid... You 
> can still buy new after-market accessories for Commodores, for example, so 
> don't assume that there are no new solutions to old problems.
>
>
>
>
>
>
>
>
>
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@...> wrote:
>>
>> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >
>> > I used a Xircom PE3 Ethernet adapter. It converts the parallel port to
>> > a NIC... although I've been wondering lately if it might not have made
>> > equally good sense to use a device server on the serial port...? And,
>> > of course, the Arachne browser... not many choices for a DOS browser
>> > are there? I used it to check my Yahoo web mail and I'll have to say
>> > that it gave a whole new dimension of meaning to the word "slow." Go
>> > ahead, make a pot of tea while it's loading that page, it will be a 
>> > while.
>> >
>> > Sometimes it's fun to do things the hard way. Ran into a web page last
>> > week of a guy who was competing with a friend to see who could force
>> > Windows XP to run with the least resources. It won't install unless it
>> > sees at least 64MB of RAM and a Pentium processor but, once installed
>> > you can remove RAM and underclock the machine... He said he got one
>> > machine to run with 20MB of RAM with a 20MHz clock and it took a half
>> > hour to boot.
>> >
>> > I scored an HP 95LX a while back and someday, when I have nothing else
>> > to do (Hah!) it might be interesting to see if I can get online with a
>> > half meg of RAM and a 1MHz processor... (maybe that Contiki OS/browser
>> > could be ported to a 95LX?)... or maybe not...
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
>> > <doug@> wrote:
>> > >
>> > > Like the hack job? :O
>> > >
>> > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
>> > > Should I take the kbd apart and clean it (will that likely
>> > > fix it?) or look for a replacement?
>> > >
>> > > So what can I do with this thing if I put more mem in it?
>> > > Its all accessed funky through expaned mem methods, isn't it?
>> > > I have a coprocessor I could put in this but not sure of
>> > > the point there.
>> > >
>> > > I think I might like to accomplish getting it on the web.
>> > > I'd need the LAN hardware I guess.
>> > > Any other ideas?
>> > >
>> > > Oh yeah, one other funny thing. The P.S. has two contact on
>> > > it that mate inside the cavity. But one of the two spring contacts
>> > > inside is "rubberized", so only the one contact hits metal to metal.
>> > > So the P.S. only works using the cord to go from the P.S. into the
>> > > radial DC jack. Strange?
>> > >
>> > > DC
>> > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> 
>> > wrote:
>> > > >
>> > > > Great job, Doug!
>> > > >
>> > > > Isn't it nice when you manage to salvage one of these beautiful
>> > machines? And yep, that's the way it works.
>> > > >
>> > > > Once you restore battery power to the 1287A, the CMOS registers
>> > are again active. It's just that they're filled with nonsense, so the
>> > computer tells you the clock had stopped (which it did), and simply
>> > prompts you to reset the time. Once you do that and reboot,
>> > everything's hunky-dory.
>> > > >
>> > > > You can probably find some more 256K sticks somewhere and upgrade
>> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to
>> > hear the HDD is good too.
>> > > >
>> > > > I recently got a great deal. There was a 1520 on sale on ebay that
>> > I looked at, however it was strange. It was definitely branded a 1520,
>> > and advertised that way, but the flip up screen said it was a 386
>> > machine. I decided to get it, and it was only about $90 with shipping.
>> > When I got the machine, I was very excited when it began to post,
>> > because I got a full 8MB of RAM! It of course displayed the
>> > configuration error 02 indicating the CMOS battery was dead. So I
>> > opened it up. Unfortunately, it was also a DS1287A model, but that was
>> > no big deal. I decided to replace the DS1287A as I had a spare.
>> > Imagine my surprise and joy when I took the keyboard off to discover
>> > that not only was this really a 386 machine (a 1530), but it also had
>> > the math coprocessor 30387 chip as well! I replaced the 1287A and this
>> > solved the configuration error just fine. But alas, I didn't get a
>> > triple crown winner here. The Conner drive was definitely dead. But
>> > heck, getting another HDD is easy compared to the other benefits! The
>> > original owner of this machine definitely took care of it.
>> > > >
>> > > > Phil
>> > > >
>> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> 
>> > wrote:
>> > > > >
>> > > > > It runs! Hard Disk is GOOD.
>> > > > > I did a DS1287 hack to the machine today and ran the wires to a
>> > convenient place for the battery. Upon power up it said
>> > > > > that the RTC was stopped, and it needed setting.
>> > > > > The "stopped" message threw me, I thought something was wrong 
>> > > > > with
>> > > > > the chip. It took an F1 to continue and went right through POST
>> > and Autoexec.
>> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
>> > > > > Now it boots cleanly.
>> > > > > Has Lotus123 on the HD.
>> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
>> > > > > The only remaining issue is that a few keys on the keyboard
>> > > > > don't work. 123Q and spacebar. From an external kbd everything
>> > > > > works.
>> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a
>> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
>> > > > >
>> > > > >
>> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> 
>> > wrote:
>> > > > > >
>> > > > > > Thanks so much that was great info. I had no idea on the X2
>> > > > > > being a rating. May have to try it without them just to
>> > > > > > make sure the rest of it is still good.
>> > > > > >
>> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
>> > <andrebakken@> wrote:
>> > > > > > >
>> > > > > > > Notice that's 250V AC, not DC, which makes a big difference.
>> > The X2 also signifies they're an enhanced type meant to go directly
>> > across the mains. Be sure to get X2 rated replacements.
>> > > > > > > The PSU will work without those cap's in place, but will
>> > radiate more interference/noise out onto the mains.
>> > > > > > >
>> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> 
>> > wrote:
>> > > > > > > >
>> > > > > > > > There are two in there that are the same.
>> > > > > > > > .15uF 250V I think I can replace them.
>> > > > > > > > Polyprop I think. Radial type in a square package.
>> > > > > > > > The bottom is clear so you can see the radial shape.
>> > > > > > > > I have them out already.
>> > > > > > > > Thanks for the tip on the 1287A
>> > > > > > > >
>> > > > > > > > DC
>> > > > > > > >
>> > > > > > > >
>> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> 
>> > wrote:
>> > > > > > > > >
>> > > > > > > > > Good Find, DC
>> > > > > > > > >
>> > > > > > > > > I guess they got burnt to the point where you can't
>> > identify the capcity amount. Could you give me the output voltage and
>> > amperage? I'll look through my units and see if I can identify them
>> > for you.
>> > > > > > > > >
>> > > > > > > > > Phil
>> > > > > > > > >
>> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> 
>> > wrote:
>> > > > > > > > > >
>> > > > > > > > > > I posted pictures of what looks like a failed cap in
>> > the ext p.s. unit. A stinky melt down!
>> > > > > > > > > > I'm supposing I can replace these.
>> > > > > > > > > > Any identification tips welcome, thanks.
>> > > > > > > > > > There appears to be two of the same caps, would
>> > replace both
>> > > > > > > > > > of course.
>> > > > > > > > > >
>> > > > > > > > > > DC
>> > > > > > > > > >
>> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> 
>> > wrote:
>> > > > > > > > > > >
>> > > > > > > > > > > I am considering tackling the repair of a 1530 that
>> > > > > > > > > > > does not respond to the power switch. The power 
>> > > > > > > > > > > supply
>> > > > > > > > > > > module measures 16.35v so I think its fine
>> > (unfortunately,
>> > > > > > > > > > > that would have been an easy problem isolation!)
>> > > > > > > > > > > So its something internal. I have the service manuals
>> > > > > > > > > > > downloaded but I thought maybe I'd get some pointers
>> > form
>> > > > > > > > > > > folks who have already performed cold stone dead
>> > diagnosis.
>> > > > > > > > > > >
>> > > > > > > > > > > If I don't dive into this FYI this very clean 1530 
>> > > > > > > > > > > will
>> > > > > > > > > > > be available for parts/repair!
>> > > > > > > > > > >
>> > > > > > > > > > > Thanks in advance,
>> > > > > > > > > > > DC
>> > > > > > > > > > >
>> > > > > > > > > >
>> > > > > > > > >
>> > > > > > > >
>> > > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> >
>>
>> Since we are on the topic of TCP does anyone have a formula stashed that
>> can be easily had to run say serial (probably ppp) from something like a
>> small system like the raspberry pi serially to a system with dos and a
>> stack?  It's been so long since I messed with dos environment networking
>> I forget.
>>
>> I think windows of some sort had trumpet to handle part of the equation,
>> but I don' t have any references right now over a dos stack.
>>
>> Probably something to do windows 3.1 or win95 / win98 would be better,
>> but I don't know if the hardware here would be up to those os's.
>>
>> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
>> asking for everything here.  Objective is to have something that could
>> suck off or load a disk image with a floppy boot.  I suspect it was a
>> difficult thing to get going in the day, though, and even wors now.
>>
>> jim
>> >
>> > ,___
>> >
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2559
Date: Sun, 14 Oct 2012 23:48:33 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Agreed!  The Xircom Parallel port 10bT is available but has limited driver support.
Other similar devices don't seem to be on the used market right not.
I'm also considering a parallel based disk drive at this point.
Yes, ISA itself would have a hard time saturating 10bT I think... I didn't actually run the numbers.
DC

--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>
> I don't think I'd even bother with the serial port.  You might get
> 230,400bps out of it if it has one of the fancier UARTs, but even a 16550AFN
> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you have
> to slow it down with CTS/RTS handshaking.  I think the standard parallel
> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but even
> if you could directly tie in to the ISA bus, it would be tough.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio.  Over."
>
>
> ----- Original Message -----
> From: "Androgenoide" <androgenoide@...>
> To: <RuGRiD-Laptop@yahoogroups.com>
> Sent: Friday, October 12, 2012 3:37 PM
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
> > The only real obstacle to DOS networking with the Grid is finding an
> > Ethernet adapter that will work through either the serial or parallel
> > ports.   I used the Xircom on the parallel port because I had one at the
> > time.   I've got a serial device server now that would probably work too
> > but I've got too much going on at the moment to dig out a Grid just to see
> > what would be required.   Either of those solutions would be limited by
> > the speed of the ports(and the Grid itself), of course.  Gigabit speeds
> > are out of the question!
> > Another thought... The guy who put together the Techworm boot disk also
> > had one called Networm, a single floppy that could do a dialup internet
> > connection... (if you still have access to a dialup service... if not,
> > Budget Dial Up has a prepaid service that allows you to buy just a few
> > hours at a time).
> >
> > Generally speaking, if an old machine has either a serial or parallel port
> > and you can get it to boot into DOS, there is always a way to transfer
> > files to another machine.   Even if it has no floppy you can use another
> > DOS machine running Laplink.  If it does have a floppy there are a lot of
> > file transfer programs out there, from Kermit to the original version of
> > Procomm that will fit on a single floppy.
> >
> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full
> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky and
> > would require some hardware tweaks even to make a slow machine... kind of
> > an extreme project.   I've heard of a Linux distro that will fit on a
> > single floppy and run on systems with limited resources
> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one
> > seems to want 4MB of RAM.
> >
> > There are plenty of people on the web who have too much time on their
> > hands and are still playing with machines even older than the Grid... You
> > can still buy new after-market accessories for Commodores, for example, so
> > don't assume that there are no new solutions to old problems.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> >>
> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> >> >
> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel port to
> >> > a NIC... although I've been wondering lately if it might not have made
> >> > equally good sense to use a device server on the serial port...? And,
> >> > of course, the Arachne browser... not many choices for a DOS browser
> >> > are there? I used it to check my Yahoo web mail and I'll have to say
> >> > that it gave a whole new dimension of meaning to the word "slow." Go
> >> > ahead, make a pot of tea while it's loading that page, it will be a
> >> > while.
> >> >
> >> > Sometimes it's fun to do things the hard way. Ran into a web page last
> >> > week of a guy who was competing with a friend to see who could force
> >> > Windows XP to run with the least resources. It won't install unless it
> >> > sees at least 64MB of RAM and a Pentium processor but, once installed
> >> > you can remove RAM and underclock the machine... He said he got one
> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a half
> >> > hour to boot.
> >> >
> >> > I scored an HP 95LX a while back and someday, when I have nothing else
> >> > to do (Hah!) it might be interesting to see if I can get online with a
> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki OS/browser
> >> > could be ported to a 95LX?)... or maybe not...
> >> >
> >> > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> >> > <doug@> wrote:
> >> > >
> >> > > Like the hack job? :O
> >> > >
> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> >> > > Should I take the kbd apart and clean it (will that likely
> >> > > fix it?) or look for a replacement?
> >> > >
> >> > > So what can I do with this thing if I put more mem in it?
> >> > > Its all accessed funky through expaned mem methods, isn't it?
> >> > > I have a coprocessor I could put in this but not sure of
> >> > > the point there.
> >> > >
> >> > > I think I might like to accomplish getting it on the web.
> >> > > I'd need the LAN hardware I guess.
> >> > > Any other ideas?
> >> > >
> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> >> > > it that mate inside the cavity. But one of the two spring contacts
> >> > > inside is "rubberized", so only the one contact hits metal to metal.
> >> > > So the P.S. only works using the cord to go from the P.S. into the
> >> > > radial DC jack. Strange?
> >> > >
> >> > > DC
> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
> >> > wrote:
> >> > > >
> >> > > > Great job, Doug!
> >> > > >
> >> > > > Isn't it nice when you manage to salvage one of these beautiful
> >> > machines? And yep, that's the way it works.
> >> > > >
> >> > > > Once you restore battery power to the 1287A, the CMOS registers
> >> > are again active. It's just that they're filled with nonsense, so the
> >> > computer tells you the clock had stopped (which it did), and simply
> >> > prompts you to reset the time. Once you do that and reboot,
> >> > everything's hunky-dory.
> >> > > >
> >> > > > You can probably find some more 256K sticks somewhere and upgrade
> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great to
> >> > hear the HDD is good too.
> >> > > >
> >> > > > I recently got a great deal. There was a 1520 on sale on ebay that
> >> > I looked at, however it was strange. It was definitely branded a 1520,
> >> > and advertised that way, but the flip up screen said it was a 386
> >> > machine. I decided to get it, and it was only about $90 with shipping.
> >> > When I got the machine, I was very excited when it began to post,
> >> > because I got a full 8MB of RAM! It of course displayed the
> >> > configuration error 02 indicating the CMOS battery was dead. So I
> >> > opened it up. Unfortunately, it was also a DS1287A model, but that was
> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> >> > Imagine my surprise and joy when I took the keyboard off to discover
> >> > that not only was this really a 386 machine (a 1530), but it also had
> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and this
> >> > solved the configuration error just fine. But alas, I didn't get a
> >> > triple crown winner here. The Conner drive was definitely dead. But
> >> > heck, getting another HDD is easy compared to the other benefits! The
> >> > original owner of this machine definitely took care of it.
> >> > > >
> >> > > > Phil
> >> > > >
> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> > wrote:
> >> > > > >
> >> > > > > It runs! Hard Disk is GOOD.
> >> > > > > I did a DS1287 hack to the machine today and ran the wires to a
> >> > convenient place for the battery. Upon power up it said
> >> > > > > that the RTC was stopped, and it needed setting.
> >> > > > > The "stopped" message threw me, I thought something was wrong
> >> > > > > with
> >> > > > > the chip. It took an F1 to continue and went right through POST
> >> > and Autoexec.
> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> >> > > > > Now it boots cleanly.
> >> > > > > Has Lotus123 on the HD.
> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> >> > > > > The only remaining issue is that a few keys on the keyboard
> >> > > > > don't work. 123Q and spacebar. From an external kbd everything
> >> > > > > works.
> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, a
> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> >> > > > >
> >> > > > >
> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> > wrote:
> >> > > > > >
> >> > > > > > Thanks so much that was great info. I had no idea on the X2
> >> > > > > > being a rating. May have to try it without them just to
> >> > > > > > make sure the rest of it is still good.
> >> > > > > >
> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> >> > <andrebakken@> wrote:
> >> > > > > > >
> >> > > > > > > Notice that's 250V AC, not DC, which makes a big difference.
> >> > The X2 also signifies they're an enhanced type meant to go directly
> >> > across the mains. Be sure to get X2 rated replacements.
> >> > > > > > > The PSU will work without those cap's in place, but will
> >> > radiate more interference/noise out onto the mains.
> >> > > > > > >
> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> > wrote:
> >> > > > > > > >
> >> > > > > > > > There are two in there that are the same.
> >> > > > > > > > .15uF 250V I think I can replace them.
> >> > > > > > > > Polyprop I think. Radial type in a square package.
> >> > > > > > > > The bottom is clear so you can see the radial shape.
> >> > > > > > > > I have them out already.
> >> > > > > > > > Thanks for the tip on the 1287A
> >> > > > > > > >
> >> > > > > > > > DC
> >> > > > > > > >
> >> > > > > > > >
> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
> >> > wrote:
> >> > > > > > > > >
> >> > > > > > > > > Good Find, DC
> >> > > > > > > > >
> >> > > > > > > > > I guess they got burnt to the point where you can't
> >> > identify the capcity amount. Could you give me the output voltage and
> >> > amperage? I'll look through my units and see if I can identify them
> >> > for you.
> >> > > > > > > > >
> >> > > > > > > > > Phil
> >> > > > > > > > >
> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> > wrote:
> >> > > > > > > > > >
> >> > > > > > > > > > I posted pictures of what looks like a failed cap in
> >> > the ext p.s. unit. A stinky melt down!
> >> > > > > > > > > > I'm supposing I can replace these.
> >> > > > > > > > > > Any identification tips welcome, thanks.
> >> > > > > > > > > > There appears to be two of the same caps, would
> >> > replace both
> >> > > > > > > > > > of course.
> >> > > > > > > > > >
> >> > > > > > > > > > DC
> >> > > > > > > > > >
> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> > wrote:
> >> > > > > > > > > > >
> >> > > > > > > > > > > I am considering tackling the repair of a 1530 that
> >> > > > > > > > > > > does not respond to the power switch. The power
> >> > > > > > > > > > > supply
> >> > > > > > > > > > > module measures 16.35v so I think its fine
> >> > (unfortunately,
> >> > > > > > > > > > > that would have been an easy problem isolation!)
> >> > > > > > > > > > > So its something internal. I have the service manuals
> >> > > > > > > > > > > downloaded but I thought maybe I'd get some pointers
> >> > form
> >> > > > > > > > > > > folks who have already performed cold stone dead
> >> > diagnosis.
> >> > > > > > > > > > >
> >> > > > > > > > > > > If I don't dive into this FYI this very clean 1530
> >> > > > > > > > > > > will
> >> > > > > > > > > > > be available for parts/repair!
> >> > > > > > > > > > >
> >> > > > > > > > > > > Thanks in advance,
> >> > > > > > > > > > > DC
> >> > > > > > > > > > >
> >> > > > > > > > > >
> >> > > > > > > > >
> >> > > > > > > >
> >> > > > > > >
> >> > > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> >> Since we are on the topic of TCP does anyone have a formula stashed that
> >> can be easily had to run say serial (probably ppp) from something like a
> >> small system like the raspberry pi serially to a system with dos and a
> >> stack?  It's been so long since I messed with dos environment networking
> >> I forget.
> >>
> >> I think windows of some sort had trumpet to handle part of the equation,
> >> but I don' t have any references right now over a dos stack.
> >>
> >> Probably something to do windows 3.1 or win95 / win98 would be better,
> >> but I don't know if the hardware here would be up to those os's.
> >>
> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
> >> asking for everything here.  Objective is to have something that could
> >> suck off or load a disk image with a floppy boot.  I suspect it was a
> >> difficult thing to get going in the day, though, and even wors now.
> >>
> >> jim
> >> >
> >> > ,___
> >> >
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
>

Yahoo! Message number: 2560
Date: Mon, 15 Oct 2012 12:09:39 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

What's the bus clock of the 1520, for example?  If it's 10MHz, it *might* 
make it, but it would be breathing hard.  As for parallel drives, see if you 
can find any of the Backpack stuff.  I have a CD-ROM drive that works off 
the parallel port, but I haven't tried it on the GRiD yet.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "techtalklive@..." <doug@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Sunday, October 14, 2012 7:48 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


>
> Agreed!  The Xircom Parallel port 10bT is available but has limited driver 
> support.
> Other similar devices don't seem to be on the used market right not.
> I'm also considering a parallel based disk drive at this point.
> Yes, ISA itself would have a hard time saturating 10bT I think... I didn't 
> actually run the numbers.
> DC
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> I don't think I'd even bother with the serial port.  You might get
>> 230,400bps out of it if it has one of the fancier UARTs, but even a 
>> 16550AFN
>> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you 
>> have
>> to slow it down with CTS/RTS handshaking.  I think the standard parallel
>> port will give you around 5Mbps, won't it?  Maybe a tad faster with
>> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but 
>> even
>> if you could directly tie in to the ISA bus, it would be tough.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message ----- 
>> From: "Androgenoide" <androgenoide@...>
>> To: <RuGRiD-Laptop@yahoogroups.com>
>> Sent: Friday, October 12, 2012 3:37 PM
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>> > The only real obstacle to DOS networking with the Grid is finding an
>> > Ethernet adapter that will work through either the serial or parallel
>> > ports.   I used the Xircom on the parallel port because I had one at 
>> > the
>> > time.   I've got a serial device server now that would probably work 
>> > too
>> > but I've got too much going on at the moment to dig out a Grid just to 
>> > see
>> > what would be required.   Either of those solutions would be limited by
>> > the speed of the ports(and the Grid itself), of course.  Gigabit speeds
>> > are out of the question!
>> > Another thought... The guy who put together the Techworm boot disk also
>> > had one called Networm, a single floppy that could do a dialup internet
>> > connection... (if you still have access to a dialup service... if not,
>> > Budget Dial Up has a prepaid service that allows you to buy just a few
>> > hours at a time).
>> >
>> > Generally speaking, if an old machine has either a serial or parallel 
>> > port
>> > and you can get it to boot into DOS, there is always a way to transfer
>> > files to another machine.   Even if it has no floppy you can use 
>> > another
>> > DOS machine running Laplink.  If it does have a floppy there are a lot 
>> > of
>> > file transfer programs out there, from Kermit to the original version 
>> > of
>> > Procomm that will fit on a single floppy.
>> >
>> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full
>> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky 
>> > and
>> > would require some hardware tweaks even to make a slow machine... kind 
>> > of
>> > an extreme project.   I've heard of a Linux distro that will fit on a
>> > single floppy and run on systems with limited resources
>> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one
>> > seems to want 4MB of RAM.
>> >
>> > There are plenty of people on the web who have too much time on their
>> > hands and are still playing with machines even older than the Grid... 
>> > You
>> > can still buy new after-market accessories for Commodores, for example, 
>> > so
>> > don't assume that there are no new solutions to old problems.
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
>> >>
>> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >> >
>> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel port 
>> >> > to
>> >> > a NIC... although I've been wondering lately if it might not have 
>> >> > made
>> >> > equally good sense to use a device server on the serial port...? 
>> >> > And,
>> >> > of course, the Arachne browser... not many choices for a DOS browser
>> >> > are there? I used it to check my Yahoo web mail and I'll have to say
>> >> > that it gave a whole new dimension of meaning to the word "slow." Go
>> >> > ahead, make a pot of tea while it's loading that page, it will be a
>> >> > while.
>> >> >
>> >> > Sometimes it's fun to do things the hard way. Ran into a web page 
>> >> > last
>> >> > week of a guy who was competing with a friend to see who could force
>> >> > Windows XP to run with the least resources. It won't install unless 
>> >> > it
>> >> > sees at least 64MB of RAM and a Pentium processor but, once 
>> >> > installed
>> >> > you can remove RAM and underclock the machine... He said he got one
>> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a 
>> >> > half
>> >> > hour to boot.
>> >> >
>> >> > I scored an HP 95LX a while back and someday, when I have nothing 
>> >> > else
>> >> > to do (Hah!) it might be interesting to see if I can get online with 
>> >> > a
>> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki 
>> >> > OS/browser
>> >> > could be ported to a 95LX?)... or maybe not...
>> >> >
>> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
>> >> > <doug@> wrote:
>> >> > >
>> >> > > Like the hack job? :O
>> >> > >
>> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
>> >> > > Should I take the kbd apart and clean it (will that likely
>> >> > > fix it?) or look for a replacement?
>> >> > >
>> >> > > So what can I do with this thing if I put more mem in it?
>> >> > > Its all accessed funky through expaned mem methods, isn't it?
>> >> > > I have a coprocessor I could put in this but not sure of
>> >> > > the point there.
>> >> > >
>> >> > > I think I might like to accomplish getting it on the web.
>> >> > > I'd need the LAN hardware I guess.
>> >> > > Any other ideas?
>> >> > >
>> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
>> >> > > it that mate inside the cavity. But one of the two spring contacts
>> >> > > inside is "rubberized", so only the one contact hits metal to 
>> >> > > metal.
>> >> > > So the P.S. only works using the cord to go from the P.S. into the
>> >> > > radial DC jack. Strange?
>> >> > >
>> >> > > DC
>> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
>> >> > wrote:
>> >> > > >
>> >> > > > Great job, Doug!
>> >> > > >
>> >> > > > Isn't it nice when you manage to salvage one of these beautiful
>> >> > machines? And yep, that's the way it works.
>> >> > > >
>> >> > > > Once you restore battery power to the 1287A, the CMOS registers
>> >> > are again active. It's just that they're filled with nonsense, so 
>> >> > the
>> >> > computer tells you the clock had stopped (which it did), and simply
>> >> > prompts you to reset the time. Once you do that and reboot,
>> >> > everything's hunky-dory.
>> >> > > >
>> >> > > > You can probably find some more 256K sticks somewhere and 
>> >> > > > upgrade
>> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great 
>> >> > to
>> >> > hear the HDD is good too.
>> >> > > >
>> >> > > > I recently got a great deal. There was a 1520 on sale on ebay 
>> >> > > > that
>> >> > I looked at, however it was strange. It was definitely branded a 
>> >> > 1520,
>> >> > and advertised that way, but the flip up screen said it was a 386
>> >> > machine. I decided to get it, and it was only about $90 with 
>> >> > shipping.
>> >> > When I got the machine, I was very excited when it began to post,
>> >> > because I got a full 8MB of RAM! It of course displayed the
>> >> > configuration error 02 indicating the CMOS battery was dead. So I
>> >> > opened it up. Unfortunately, it was also a DS1287A model, but that 
>> >> > was
>> >> > no big deal. I decided to replace the DS1287A as I had a spare.
>> >> > Imagine my surprise and joy when I took the keyboard off to discover
>> >> > that not only was this really a 386 machine (a 1530), but it also 
>> >> > had
>> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and 
>> >> > this
>> >> > solved the configuration error just fine. But alas, I didn't get a
>> >> > triple crown winner here. The Conner drive was definitely dead. But
>> >> > heck, getting another HDD is easy compared to the other benefits! 
>> >> > The
>> >> > original owner of this machine definitely took care of it.
>> >> > > >
>> >> > > > Phil
>> >> > > >
>> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> > wrote:
>> >> > > > >
>> >> > > > > It runs! Hard Disk is GOOD.
>> >> > > > > I did a DS1287 hack to the machine today and ran the wires to 
>> >> > > > > a
>> >> > convenient place for the battery. Upon power up it said
>> >> > > > > that the RTC was stopped, and it needed setting.
>> >> > > > > The "stopped" message threw me, I thought something was wrong
>> >> > > > > with
>> >> > > > > the chip. It took an F1 to continue and went right through 
>> >> > > > > POST
>> >> > and Autoexec.
>> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
>> >> > > > > Now it boots cleanly.
>> >> > > > > Has Lotus123 on the HD.
>> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
>> >> > > > > The only remaining issue is that a few keys on the keyboard
>> >> > > > > don't work. 123Q and spacebar. From an external kbd everything
>> >> > > > > works.
>> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM, 
>> >> > > > > a
>> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
>> >> > > > >
>> >> > > > >
>> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> > wrote:
>> >> > > > > >
>> >> > > > > > Thanks so much that was great info. I had no idea on the X2
>> >> > > > > > being a rating. May have to try it without them just to
>> >> > > > > > make sure the rest of it is still good.
>> >> > > > > >
>> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
>> >> > <andrebakken@> wrote:
>> >> > > > > > >
>> >> > > > > > > Notice that's 250V AC, not DC, which makes a big 
>> >> > > > > > > difference.
>> >> > The X2 also signifies they're an enhanced type meant to go directly
>> >> > across the mains. Be sure to get X2 rated replacements.
>> >> > > > > > > The PSU will work without those cap's in place, but will
>> >> > radiate more interference/noise out onto the mains.
>> >> > > > > > >
>> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> > wrote:
>> >> > > > > > > >
>> >> > > > > > > > There are two in there that are the same.
>> >> > > > > > > > .15uF 250V I think I can replace them.
>> >> > > > > > > > Polyprop I think. Radial type in a square package.
>> >> > > > > > > > The bottom is clear so you can see the radial shape.
>> >> > > > > > > > I have them out already.
>> >> > > > > > > > Thanks for the tip on the 1287A
>> >> > > > > > > >
>> >> > > > > > > > DC
>> >> > > > > > > >
>> >> > > > > > > >
>> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
>> >> > wrote:
>> >> > > > > > > > >
>> >> > > > > > > > > Good Find, DC
>> >> > > > > > > > >
>> >> > > > > > > > > I guess they got burnt to the point where you can't
>> >> > identify the capcity amount. Could you give me the output voltage 
>> >> > and
>> >> > amperage? I'll look through my units and see if I can identify them
>> >> > for you.
>> >> > > > > > > > >
>> >> > > > > > > > > Phil
>> >> > > > > > > > >
>> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> > wrote:
>> >> > > > > > > > > >
>> >> > > > > > > > > > I posted pictures of what looks like a failed cap in
>> >> > the ext p.s. unit. A stinky melt down!
>> >> > > > > > > > > > I'm supposing I can replace these.
>> >> > > > > > > > > > Any identification tips welcome, thanks.
>> >> > > > > > > > > > There appears to be two of the same caps, would
>> >> > replace both
>> >> > > > > > > > > > of course.
>> >> > > > > > > > > >
>> >> > > > > > > > > > DC
>> >> > > > > > > > > >
>> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> > wrote:
>> >> > > > > > > > > > >
>> >> > > > > > > > > > > I am considering tackling the repair of a 1530 
>> >> > > > > > > > > > > that
>> >> > > > > > > > > > > does not respond to the power switch. The power
>> >> > > > > > > > > > > supply
>> >> > > > > > > > > > > module measures 16.35v so I think its fine
>> >> > (unfortunately,
>> >> > > > > > > > > > > that would have been an easy problem isolation!)
>> >> > > > > > > > > > > So its something internal. I have the service 
>> >> > > > > > > > > > > manuals
>> >> > > > > > > > > > > downloaded but I thought maybe I'd get some 
>> >> > > > > > > > > > > pointers
>> >> > form
>> >> > > > > > > > > > > folks who have already performed cold stone dead
>> >> > diagnosis.
>> >> > > > > > > > > > >
>> >> > > > > > > > > > > If I don't dive into this FYI this very clean 1530
>> >> > > > > > > > > > > will
>> >> > > > > > > > > > > be available for parts/repair!
>> >> > > > > > > > > > >
>> >> > > > > > > > > > > Thanks in advance,
>> >> > > > > > > > > > > DC
>> >> > > > > > > > > > >
>> >> > > > > > > > > >
>> >> > > > > > > > >
>> >> > > > > > > >
>> >> > > > > > >
>> >> > > > > >
>> >> > > > >
>> >> > > >
>> >> > >
>> >> >
>> >>
>> >> Since we are on the topic of TCP does anyone have a formula stashed 
>> >> that
>> >> can be easily had to run say serial (probably ppp) from something like 
>> >> a
>> >> small system like the raspberry pi serially to a system with dos and a
>> >> stack?  It's been so long since I messed with dos environment 
>> >> networking
>> >> I forget.
>> >>
>> >> I think windows of some sort had trumpet to handle part of the 
>> >> equation,
>> >> but I don' t have any references right now over a dos stack.
>> >>
>> >> Probably something to do windows 3.1 or win95 / win98 would be better,
>> >> but I don't know if the hardware here would be up to those os's.
>> >>
>> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
>> >> asking for everything here.  Objective is to have something that could
>> >> suck off or load a disk image with a floppy boot.  I suspect it was a
>> >> difficult thing to get going in the day, though, and even wors now.
>> >>
>> >> jim
>> >> >
>> >> > ,___
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2561
Date: Tue, 16 Oct 2012 02:47:39 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Its a 1530... clock is... I dont know 20Mhz?
Yes checking out Backpacks now. Just collected drivers from
around the web for them and am checking on ebay for
equipment.  I suspect they will work.

I thought I might take a look to see if there was parallel port
software that would work like "laplink" to tether to another PC
but would make a directory/drive on the the host PC appear as a drive to the 1530.

That would be cool... and avoid purchasing old hardware.



--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>
> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> make it, but it would be breathing hard.  As for parallel drives, see if you
> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> the parallel port, but I haven't tried it on the GRiD yet.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio.  Over."
>
>
> ----- Original Message -----
> From: "techtalklive@..." <doug@...>
> To: <RuGRiD-Laptop@yahoogroups.com>
> Sent: Sunday, October 14, 2012 7:48 PM
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
> >
> > Agreed!  The Xircom Parallel port 10bT is available but has limited driver
> > support.
> > Other similar devices don't seem to be on the used market right not.
> > I'm also considering a parallel based disk drive at this point.
> > Yes, ISA itself would have a hard time saturating 10bT I think... I didn't
> > actually run the numbers.
> > DC
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >>
> >> I don't think I'd even bother with the serial port.  You might get
> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> >> 16550AFN
> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> >> have
> >> to slow it down with CTS/RTS handshaking.  I think the standard parallel
> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> >> even
> >> if you could directly tie in to the ISA bus, it would be tough.
> >>
> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> "She said it was either her or the ham radio.  Over."
> >>
> >>
> >> ----- Original Message -----
> >> From: "Androgenoide" <androgenoide@>
> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> Sent: Friday, October 12, 2012 3:37 PM
> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >>
> >>
> >> > The only real obstacle to DOS networking with the Grid is finding an
> >> > Ethernet adapter that will work through either the serial or parallel
> >> > ports.   I used the Xircom on the parallel port because I had one at
> >> > the
> >> > time.   I've got a serial device server now that would probably work
> >> > too
> >> > but I've got too much going on at the moment to dig out a Grid just to
> >> > see
> >> > what would be required.   Either of those solutions would be limited by
> >> > the speed of the ports(and the Grid itself), of course.  Gigabit speeds
> >> > are out of the question!
> >> > Another thought... The guy who put together the Techworm boot disk also
> >> > had one called Networm, a single floppy that could do a dialup internet
> >> > connection... (if you still have access to a dialup service... if not,
> >> > Budget Dial Up has a prepaid service that allows you to buy just a few
> >> > hours at a time).
> >> >
> >> > Generally speaking, if an old machine has either a serial or parallel
> >> > port
> >> > and you can get it to boot into DOS, there is always a way to transfer
> >> > files to another machine.   Even if it has no floppy you can use
> >> > another
> >> > DOS machine running Laplink.  If it does have a floppy there are a lot
> >> > of
> >> > file transfer programs out there, from Kermit to the original version
> >> > of
> >> > Procomm that will fit on a single floppy.
> >> >
> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full
> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky
> >> > and
> >> > would require some hardware tweaks even to make a slow machine... kind
> >> > of
> >> > an extreme project.   I've heard of a Linux distro that will fit on a
> >> > single floppy and run on systems with limited resources
> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one
> >> > seems to want 4MB of RAM.
> >> >
> >> > There are plenty of people on the web who have too much time on their
> >> > hands and are still playing with machines even older than the Grid...
> >> > You
> >> > can still buy new after-market accessories for Commodores, for example,
> >> > so
> >> > don't assume that there are no new solutions to old problems.
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> >> >>
> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> >> >> >
> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel port
> >> >> > to
> >> >> > a NIC... although I've been wondering lately if it might not have
> >> >> > made
> >> >> > equally good sense to use a device server on the serial port...?
> >> >> > And,
> >> >> > of course, the Arachne browser... not many choices for a DOS browser
> >> >> > are there? I used it to check my Yahoo web mail and I'll have to say
> >> >> > that it gave a whole new dimension of meaning to the word "slow." Go
> >> >> > ahead, make a pot of tea while it's loading that page, it will be a
> >> >> > while.
> >> >> >
> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> >> >> > last
> >> >> > week of a guy who was competing with a friend to see who could force
> >> >> > Windows XP to run with the least resources. It won't install unless
> >> >> > it
> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> >> >> > installed
> >> >> > you can remove RAM and underclock the machine... He said he got one
> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> >> >> > half
> >> >> > hour to boot.
> >> >> >
> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> >> >> > else
> >> >> > to do (Hah!) it might be interesting to see if I can get online with
> >> >> > a
> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> >> >> > OS/browser
> >> >> > could be ported to a 95LX?)... or maybe not...
> >> >> >
> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> >> >> > <doug@> wrote:
> >> >> > >
> >> >> > > Like the hack job? :O
> >> >> > >
> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> >> >> > > Should I take the kbd apart and clean it (will that likely
> >> >> > > fix it?) or look for a replacement?
> >> >> > >
> >> >> > > So what can I do with this thing if I put more mem in it?
> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> >> >> > > I have a coprocessor I could put in this but not sure of
> >> >> > > the point there.
> >> >> > >
> >> >> > > I think I might like to accomplish getting it on the web.
> >> >> > > I'd need the LAN hardware I guess.
> >> >> > > Any other ideas?
> >> >> > >
> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> >> >> > > it that mate inside the cavity. But one of the two spring contacts
> >> >> > > inside is "rubberized", so only the one contact hits metal to
> >> >> > > metal.
> >> >> > > So the P.S. only works using the cord to go from the P.S. into the
> >> >> > > radial DC jack. Strange?
> >> >> > >
> >> >> > > DC
> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
> >> >> > wrote:
> >> >> > > >
> >> >> > > > Great job, Doug!
> >> >> > > >
> >> >> > > > Isn't it nice when you manage to salvage one of these beautiful
> >> >> > machines? And yep, that's the way it works.
> >> >> > > >
> >> >> > > > Once you restore battery power to the 1287A, the CMOS registers
> >> >> > are again active. It's just that they're filled with nonsense, so
> >> >> > the
> >> >> > computer tells you the clock had stopped (which it did), and simply
> >> >> > prompts you to reset the time. Once you do that and reboot,
> >> >> > everything's hunky-dory.
> >> >> > > >
> >> >> > > > You can probably find some more 256K sticks somewhere and
> >> >> > > > upgrade
> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great
> >> >> > to
> >> >> > hear the HDD is good too.
> >> >> > > >
> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> >> >> > > > that
> >> >> > I looked at, however it was strange. It was definitely branded a
> >> >> > 1520,
> >> >> > and advertised that way, but the flip up screen said it was a 386
> >> >> > machine. I decided to get it, and it was only about $90 with
> >> >> > shipping.
> >> >> > When I got the machine, I was very excited when it began to post,
> >> >> > because I got a full 8MB of RAM! It of course displayed the
> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but that
> >> >> > was
> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> >> >> > Imagine my surprise and joy when I took the keyboard off to discover
> >> >> > that not only was this really a 386 machine (a 1530), but it also
> >> >> > had
> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> >> >> > this
> >> >> > solved the configuration error just fine. But alas, I didn't get a
> >> >> > triple crown winner here. The Conner drive was definitely dead. But
> >> >> > heck, getting another HDD is easy compared to the other benefits!
> >> >> > The
> >> >> > original owner of this machine definitely took care of it.
> >> >> > > >
> >> >> > > > Phil
> >> >> > > >
> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> > wrote:
> >> >> > > > >
> >> >> > > > > It runs! Hard Disk is GOOD.
> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires to
> >> >> > > > > a
> >> >> > convenient place for the battery. Upon power up it said
> >> >> > > > > that the RTC was stopped, and it needed setting.
> >> >> > > > > The "stopped" message threw me, I thought something was wrong
> >> >> > > > > with
> >> >> > > > > the chip. It took an F1 to continue and went right through
> >> >> > > > > POST
> >> >> > and Autoexec.
> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> >> >> > > > > Now it boots cleanly.
> >> >> > > > > Has Lotus123 on the HD.
> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> >> >> > > > > don't work. 123Q and spacebar. From an external kbd everything
> >> >> > > > > works.
> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM,
> >> >> > > > > a
> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> >> >> > > > >
> >> >> > > > >
> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> > wrote:
> >> >> > > > > >
> >> >> > > > > > Thanks so much that was great info. I had no idea on the X2
> >> >> > > > > > being a rating. May have to try it without them just to
> >> >> > > > > > make sure the rest of it is still good.
> >> >> > > > > >
> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> >> >> > <andrebakken@> wrote:
> >> >> > > > > > >
> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> >> >> > > > > > > difference.
> >> >> > The X2 also signifies they're an enhanced type meant to go directly
> >> >> > across the mains. Be sure to get X2 rated replacements.
> >> >> > > > > > > The PSU will work without those cap's in place, but will
> >> >> > radiate more interference/noise out onto the mains.
> >> >> > > > > > >
> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> > wrote:
> >> >> > > > > > > >
> >> >> > > > > > > > There are two in there that are the same.
> >> >> > > > > > > > .15uF 250V I think I can replace them.
> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> >> >> > > > > > > > I have them out already.
> >> >> > > > > > > > Thanks for the tip on the 1287A
> >> >> > > > > > > >
> >> >> > > > > > > > DC
> >> >> > > > > > > >
> >> >> > > > > > > >
> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
> >> >> > wrote:
> >> >> > > > > > > > >
> >> >> > > > > > > > > Good Find, DC
> >> >> > > > > > > > >
> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> >> >> > identify the capcity amount. Could you give me the output voltage
> >> >> > and
> >> >> > amperage? I'll look through my units and see if I can identify them
> >> >> > for you.
> >> >> > > > > > > > >
> >> >> > > > > > > > > Phil
> >> >> > > > > > > > >
> >> >> > > > > > > > > --- In RuGRiD-Laptop@...m
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> > wrote:
> >> >> > > > > > > > > >
> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap in
> >> >> > the ext p.s. unit. A stinky melt down!
> >> >> > > > > > > > > > I'm supposing I can replace these.
> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> >> >> > > > > > > > > > There appears to be two of the same caps, would
> >> >> > replace both
> >> >> > > > > > > > > > of course.
> >> >> > > > > > > > > >
> >> >> > > > > > > > > > DC
> >> >> > > > > > > > > >
> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> > wrote:
> >> >> > > > > > > > > > >
> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> >> >> > > > > > > > > > > that
> >> >> > > > > > > > > > > does not respond to the power switch. The power
> >> >> > > > > > > > > > > supply
> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> >> >> > (unfortunately,
> >> >> > > > > > > > > > > that would have been an easy problem isolation!)
> >> >> > > > > > > > > > > So its something internal. I have the service
> >> >> > > > > > > > > > > manuals
> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> >> >> > > > > > > > > > > pointers
> >> >> > form
> >> >> > > > > > > > > > > folks who have already performed cold stone dead
> >> >> > diagnosis.
> >> >> > > > > > > > > > >
> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean 1530
> >> >> > > > > > > > > > > will
> >> >> > > > > > > > > > > be available for parts/repair!
> >> >> > > > > > > > > > >
> >> >> > > > > > > > > > > Thanks in advance,
> >> >> > > > > > > > > > > DC
> >> >> > > > > > > > > > >
> >> >> > > > > > > > > >
> >> >> > > > > > > > >
> >> >> > > > > > > >
> >> >> > > > > > >
> >> >> > > > > >
> >> >> > > > >
> >> >> > > >
> >> >> > >
> >> >> >
> >> >>
> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> >> >> that
> >> >> can be easily had to run say serial (probably ppp) from something like
> >> >> a
> >> >> small system like the raspberry pi serially to a system with dos and a
> >> >> stack?  It's been so long since I messed with dos environment
> >> >> networking
> >> >> I forget.
> >> >>
> >> >> I think windows of some sort had trumpet to handle part of the
> >> >> equation,
> >> >> but I don' t have any references right now over a dos stack.
> >> >>
> >> >> Probably something to do windows 3.1 or win95 / win98 would be better,
> >> >> but I don't know if the hardware here would be up to those os's.
> >> >>
> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
> >> >> asking for everything here.  Objective is to have something that could
> >> >> suck off or load a disk image with a floppy boot.  I suspect it was a
> >> >> difficult thing to get going in the day, though, and even wors now.
> >> >>
> >> >> jim
> >> >> >
> >> >> > ,___
> >> >> >
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> > ------------------------------------
> >> >
> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
>

Yahoo! Message number: 2562
Date: Tue, 16 Oct 2012 09:28:57 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Good luck with the Backpack stuff.

There's a book called "Hot Links", which was produced by the same people 
that produced LapLink.  In the back of the book is a disk with programs that 
will let you transfer files, either via null modem cable or LapLink cable. 
I doubt that the book is still in print, but it might be something to look 
for.  If you get the book without the disk, let me know, and I'll get you 
the software.  I can't remember if it lets you map the host drive to the 
client machine, but that would be cool, if it does that.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "techtalklive@..." <doug@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Monday, October 15, 2012 10:47 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


> Its a 1530... clock is... I dont know 20Mhz?
> Yes checking out Backpacks now. Just collected drivers from
> around the web for them and am checking on ebay for
> equipment.  I suspect they will work.
>
> I thought I might take a look to see if there was parallel port
> software that would work like "laplink" to tether to another PC
> but would make a directory/drive on the the host PC appear as a drive to 
> the 1530.
>
> That would be cool... and avoid purchasing old hardware.
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
>> make it, but it would be breathing hard.  As for parallel drives, see if 
>> you
>> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
>> the parallel port, but I haven't tried it on the GRiD yet.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message ----- 
>> From: "techtalklive@..." <doug@...>
>> To: <RuGRiD-Laptop@yahoogroups.com>
>> Sent: Sunday, October 14, 2012 7:48 PM
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>> >
>> > Agreed!  The Xircom Parallel port 10bT is available but has limited 
>> > driver
>> > support.
>> > Other similar devices don't seem to be on the used market right not.
>> > I'm also considering a parallel based disk drive at this point.
>> > Yes, ISA itself would have a hard time saturating 10bT I think... I 
>> > didn't
>> > actually run the numbers.
>> > DC
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
>> >>
>> >> I don't think I'd even bother with the serial port.  You might get
>> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
>> >> 16550AFN
>> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
>> >> have
>> >> to slow it down with CTS/RTS handshaking.  I think the standard 
>> >> parallel
>> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
>> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
>> >> even
>> >> if you could directly tie in to the ISA bus, it would be tough.
>> >>
>> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> "She said it was either her or the ham radio.  Over."
>> >>
>> >>
>> >> ----- Original Message ----- 
>> >> From: "Androgenoide" <androgenoide@>
>> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> Sent: Friday, October 12, 2012 3:37 PM
>> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >>
>> >>
>> >> > The only real obstacle to DOS networking with the Grid is finding an
>> >> > Ethernet adapter that will work through either the serial or 
>> >> > parallel
>> >> > ports.   I used the Xircom on the parallel port because I had one at
>> >> > the
>> >> > time.   I've got a serial device server now that would probably work
>> >> > too
>> >> > but I've got too much going on at the moment to dig out a Grid just 
>> >> > to
>> >> > see
>> >> > what would be required.   Either of those solutions would be limited 
>> >> > by
>> >> > the speed of the ports(and the Grid itself), of course.  Gigabit 
>> >> > speeds
>> >> > are out of the question!
>> >> > Another thought... The guy who put together the Techworm boot disk 
>> >> > also
>> >> > had one called Networm, a single floppy that could do a dialup 
>> >> > internet
>> >> > connection... (if you still have access to a dialup service... if 
>> >> > not,
>> >> > Budget Dial Up has a prepaid service that allows you to buy just a 
>> >> > few
>> >> > hours at a time).
>> >> >
>> >> > Generally speaking, if an old machine has either a serial or 
>> >> > parallel
>> >> > port
>> >> > and you can get it to boot into DOS, there is always a way to 
>> >> > transfer
>> >> > files to another machine.   Even if it has no floppy you can use
>> >> > another
>> >> > DOS machine running Laplink.  If it does have a floppy there are a 
>> >> > lot
>> >> > of
>> >> > file transfer programs out there, from Kermit to the original 
>> >> > version
>> >> > of
>> >> > Procomm that will fit on a single floppy.
>> >> >
>> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a 
>> >> > full
>> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be 
>> >> > tricky
>> >> > and
>> >> > would require some hardware tweaks even to make a slow machine... 
>> >> > kind
>> >> > of
>> >> > an extreme project.   I've heard of a Linux distro that will fit on 
>> >> > a
>> >> > single floppy and run on systems with limited resources
>> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that 
>> >> > one
>> >> > seems to want 4MB of RAM.
>> >> >
>> >> > There are plenty of people on the web who have too much time on 
>> >> > their
>> >> > hands and are still playing with machines even older than the 
>> >> > Grid...
>> >> > You
>> >> > can still buy new after-market accessories for Commodores, for 
>> >> > example,
>> >> > so
>> >> > don't assume that there are no new solutions to old problems.
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
>> >> >>
>> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >> >> >
>> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel 
>> >> >> > port
>> >> >> > to
>> >> >> > a NIC... although I've been wondering lately if it might not have
>> >> >> > made
>> >> >> > equally good sense to use a device server on the serial port...?
>> >> >> > And,
>> >> >> > of course, the Arachne browser... not many choices for a DOS 
>> >> >> > browser
>> >> >> > are there? I used it to check my Yahoo web mail and I'll have to 
>> >> >> > say
>> >> >> > that it gave a whole new dimension of meaning to the word "slow." 
>> >> >> > Go
>> >> >> > ahead, make a pot of tea while it's loading that page, it will be 
>> >> >> > a
>> >> >> > while.
>> >> >> >
>> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
>> >> >> > last
>> >> >> > week of a guy who was competing with a friend to see who could 
>> >> >> > force
>> >> >> > Windows XP to run with the least resources. It won't install 
>> >> >> > unless
>> >> >> > it
>> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
>> >> >> > installed
>> >> >> > you can remove RAM and underclock the machine... He said he got 
>> >> >> > one
>> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
>> >> >> > half
>> >> >> > hour to boot.
>> >> >> >
>> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
>> >> >> > else
>> >> >> > to do (Hah!) it might be interesting to see if I can get online 
>> >> >> > with
>> >> >> > a
>> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
>> >> >> > OS/browser
>> >> >> > could be ported to a 95LX?)... or maybe not...
>> >> >> >
>> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
>> >> >> > <doug@> wrote:
>> >> >> > >
>> >> >> > > Like the hack job? :O
>> >> >> > >
>> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped 
>> >> >> > > screes?
>> >> >> > > Should I take the kbd apart and clean it (will that likely
>> >> >> > > fix it?) or look for a replacement?
>> >> >> > >
>> >> >> > > So what can I do with this thing if I put more mem in it?
>> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
>> >> >> > > I have a coprocessor I could put in this but not sure of
>> >> >> > > the point there.
>> >> >> > >
>> >> >> > > I think I might like to accomplish getting it on the web.
>> >> >> > > I'd need the LAN hardware I guess.
>> >> >> > > Any other ideas?
>> >> >> > >
>> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
>> >> >> > > it that mate inside the cavity. But one of the two spring 
>> >> >> > > contacts
>> >> >> > > inside is "rubberized", so only the one contact hits metal to
>> >> >> > > metal.
>> >> >> > > So the P.S. only works using the cord to go from the P.S. into 
>> >> >> > > the
>> >> >> > > radial DC jack. Strange?
>> >> >> > >
>> >> >> > > DC
>> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" 
>> >> >> > <Jeriddian@>
>> >> >> > wrote:
>> >> >> > > >
>> >> >> > > > Great job, Doug!
>> >> >> > > >
>> >> >> > > > Isn't it nice when you manage to salvage one of these 
>> >> >> > > > beautiful
>> >> >> > machines? And yep, that's the way it works.
>> >> >> > > >
>> >> >> > > > Once you restore battery power to the 1287A, the CMOS 
>> >> >> > > > registers
>> >> >> > are again active. It's just that they're filled with nonsense, so
>> >> >> > the
>> >> >> > computer tells you the clock had stopped (which it did), and 
>> >> >> > simply
>> >> >> > prompts you to reset the time. Once you do that and reboot,
>> >> >> > everything's hunky-dory.
>> >> >> > > >
>> >> >> > > > You can probably find some more 256K sticks somewhere and
>> >> >> > > > upgrade
>> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. 
>> >> >> > Great
>> >> >> > to
>> >> >> > hear the HDD is good too.
>> >> >> > > >
>> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
>> >> >> > > > that
>> >> >> > I looked at, however it was strange. It was definitely branded a
>> >> >> > 1520,
>> >> >> > and advertised that way, but the flip up screen said it was a 386
>> >> >> > machine. I decided to get it, and it was only about $90 with
>> >> >> > shipping.
>> >> >> > When I got the machine, I was very excited when it began to post,
>> >> >> > because I got a full 8MB of RAM! It of course displayed the
>> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
>> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but 
>> >> >> > that
>> >> >> > was
>> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
>> >> >> > Imagine my surprise and joy when I took the keyboard off to 
>> >> >> > discover
>> >> >> > that not only was this really a 386 machine (a 1530), but it also
>> >> >> > had
>> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
>> >> >> > this
>> >> >> > solved the configuration error just fine. But alas, I didn't get 
>> >> >> > a
>> >> >> > triple crown winner here. The Conner drive was definitely dead. 
>> >> >> > But
>> >> >> > heck, getting another HDD is easy compared to the other benefits!
>> >> >> > The
>> >> >> > original owner of this machine definitely took care of it.
>> >> >> > > >
>> >> >> > > > Phil
>> >> >> > > >
>> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > >
>> >> >> > > > > It runs! Hard Disk is GOOD.
>> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires 
>> >> >> > > > > to
>> >> >> > > > > a
>> >> >> > convenient place for the battery. Upon power up it said
>> >> >> > > > > that the RTC was stopped, and it needed setting.
>> >> >> > > > > The "stopped" message threw me, I thought something was 
>> >> >> > > > > wrong
>> >> >> > > > > with
>> >> >> > > > > the chip. It took an F1 to continue and went right through
>> >> >> > > > > POST
>> >> >> > and Autoexec.
>> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
>> >> >> > > > > Now it boots cleanly.
>> >> >> > > > > Has Lotus123 on the HD.
>> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
>> >> >> > > > > The only remaining issue is that a few keys on the keyboard
>> >> >> > > > > don't work. 123Q and spacebar. From an external kbd 
>> >> >> > > > > everything
>> >> >> > > > > works.
>> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB 
>> >> >> > > > > RAM,
>> >> >> > > > > a
>> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > >
>> >> >> > > > > > Thanks so much that was great info. I had no idea on the 
>> >> >> > > > > > X2
>> >> >> > > > > > being a rating. May have to try it without them just to
>> >> >> > > > > > make sure the rest of it is still good.
>> >> >> > > > > >
>> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
>> >> >> > <andrebakken@> wrote:
>> >> >> > > > > > >
>> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
>> >> >> > > > > > > difference.
>> >> >> > The X2 also signifies they're an enhanced type meant to go 
>> >> >> > directly
>> >> >> > across the mains. Be sure to get X2 rated replacements.
>> >> >> > > > > > > The PSU will work without those cap's in place, but 
>> >> >> > > > > > > will
>> >> >> > radiate more interference/noise out onto the mains.
>> >> >> > > > > > >
>> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > > > >
>> >> >> > > > > > > > There are two in there that are the same.
>> >> >> > > > > > > > .15uF 250V I think I can replace them.
>> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
>> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
>> >> >> > > > > > > > I have them out already.
>> >> >> > > > > > > > Thanks for the tip on the 1287A
>> >> >> > > > > > > >
>> >> >> > > > > > > > DC
>> >> >> > > > > > > >
>> >> >> > > > > > > >
>> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" 
>> >> >> > <Jeriddian@>
>> >> >> > wrote:
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > Good Find, DC
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > I guess they got burnt to the point where you can't
>> >> >> > identify the capcity amount. Could you give me the output voltage
>> >> >> > and
>> >> >> > amperage? I'll look through my units and see if I can identify 
>> >> >> > them
>> >> >> > for you.
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > Phil
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap 
>> >> >> > > > > > > > > > in
>> >> >> > the ext p.s. unit. A stinky melt down!
>> >> >> > > > > > > > > > I'm supposing I can replace these.
>> >> >> > > > > > > > > > Any identification tips welcome, thanks.
>> >> >> > > > > > > > > > There appears to be two of the same caps, would
>> >> >> > replace both
>> >> >> > > > > > > > > > of course.
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > > > DC
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
>> >> >> > > > > > > > > > > that
>> >> >> > > > > > > > > > > does not respond to the power switch. The power
>> >> >> > > > > > > > > > > supply
>> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
>> >> >> > (unfortunately,
>> >> >> > > > > > > > > > > that would have been an easy problem 
>> >> >> > > > > > > > > > > isolation!)
>> >> >> > > > > > > > > > > So its something internal. I have the service
>> >> >> > > > > > > > > > > manuals
>> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
>> >> >> > > > > > > > > > > pointers
>> >> >> > form
>> >> >> > > > > > > > > > > folks who have already performed cold stone 
>> >> >> > > > > > > > > > > dead
>> >> >> > diagnosis.
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean 
>> >> >> > > > > > > > > > > 1530
>> >> >> > > > > > > > > > > will
>> >> >> > > > > > > > > > > be available for parts/repair!
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > > > Thanks in advance,
>> >> >> > > > > > > > > > > DC
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > >
>> >> >> > > > > > > >
>> >> >> > > > > > >
>> >> >> > > > > >
>> >> >> > > > >
>> >> >> > > >
>> >> >> > >
>> >> >> >
>> >> >>
>> >> >> Since we are on the topic of TCP does anyone have a formula stashed
>> >> >> that
>> >> >> can be easily had to run say serial (probably ppp) from something 
>> >> >> like
>> >> >> a
>> >> >> small system like the raspberry pi serially to a system with dos 
>> >> >> and a
>> >> >> stack?  It's been so long since I messed with dos environment
>> >> >> networking
>> >> >> I forget.
>> >> >>
>> >> >> I think windows of some sort had trumpet to handle part of the
>> >> >> equation,
>> >> >> but I don' t have any references right now over a dos stack.
>> >> >>
>> >> >> Probably something to do windows 3.1 or win95 / win98 would be 
>> >> >> better,
>> >> >> but I don't know if the hardware here would be up to those os's.
>> >> >>
>> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. 
>> >> >> I'm
>> >> >> asking for everything here.  Objective is to have something that 
>> >> >> could
>> >> >> suck off or load a disk image with a floppy boot.  I suspect it was 
>> >> >> a
>> >> >> difficult thing to get going in the day, though, and even wors now.
>> >> >>
>> >> >> jim
>> >> >> >
>> >> >> > ,___
>> >> >> >
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > ------------------------------------
>> >> >
>> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2563
Date: Tue, 16 Oct 2012 10:20:42 -0700 (PDT)
From: Lawrence Walker
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=utf-8

 I bought a GRID SCSI adaptor (the slide-in type like the VGA and power adaptors) many years ago in my enthusiactic Grid period. I must admit that I never tried it out and it is buried in my Grid boxes. There was also a program with it which inserted an interrupt entry in the BIOS to transfer control to the SCSI BIOS on the adaptor hardware like one finds with video gear The vendor also had another adaptor which allowed connection to IEE? devices like on the Commodore output. If there is any interest I could dig out the program and send an image of it.






>________________________________
> From: "techtalklive@..." <doug@...>
>To: RuGRiD-Laptop@yahoogroups.com
>Sent: Monday, October 15, 2012 9:47:39 PM
>Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
> 
>Its a 1530... clock is... I dont know 20Mhz?
>Yes checking out Backpacks now. Just collected drivers from
>around the web for them and am checking on ebay for
>equipment.  I suspect they will work.
>
>I thought I might take a look to see if there was parallel port
>software that would work like "laplink" to tether to another PC
>but would make a directory/drive on the the host PC appear as a drive to the 1530.
>
>That would be cool... and avoid purchasing old hardware.
>
>--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
>> make it, but it would be breathing hard.  As for parallel drives, see if you
>> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
>> the parallel port, but I haven't tried it on the GRiD yet.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message -----
>> From: "techtalklive@..." <doug@...>
>> To: <RuGRiD-Laptop@yahoogroups.com>
>> Sent: Sunday, October 14, 2012 7:48 PM
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>> >
>> > Agreed!  The Xircom Parallel port 10bT is available but has limited driver
>> > support.
>> > Other similar devices don't seem to be on the used market right not.
>> > I'm also considering a parallel based disk drive at this point.
>> > Yes, ISA itself would have a hard time saturating 10bT I think... I didn't
>> > actually run the numbers.
>> > DC
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
>> >>
>> >> I don't think I'd even bother with the serial port.  You might get
>> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
>> >> 16550AFN
>> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
>> >> have
>> >> to slow it down with CTS/RTS handshaking.  I think the standard parallel
>> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
>> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
>> >> even
>> >> if you could directly tie in to the ISA bus, it would be tough.
>> >>
>> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> "She said it was either her or the ham radio.  Over."
>> >>
>> >>
>> >> ----- Original Message -----
>> >> From: "Androgenoide" <androgenoide@>
>> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> Sent: Friday, October 12, 2012 3:37 PM
>> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >>
>> >>
>> >> > The only real obstacle to DOS networking with the Grid is finding an
>> >> > Ethernet adapter that will work through either the serial or parallel
>> >> > ports.   I used the Xircom on the parallel port because I had one at
>> >> > the
>> >> > time.   I've got a serial device server now that would probably work
>> >> > too
>> >> > but I've got too much going on at the moment to dig out a Grid just to
>> >> > see
>> >> > what would be required.   Either of those solutions would be limited by
>> >> > the speed of the ports(and the Grid itself), of course.  Gigabit speeds
>> >> > are out of the question!
>> >> > Another thought... The guy who put together the Techworm boot disk also
>> >> > had one called Networm, a single floppy that could do a dialup internet
>> >> > connection... (if you still have access to a dialup service... if not,
>> >> > Budget Dial Up has a prepaid service that allows you to buy just a few
>> >> > hours at a time).
>> >> >
>> >> > Generally speaking, if an old machine has either a serial or parallel
>> >> > port
>> >> > and you can get it to boot into DOS, there is always a way to transfer
>> >> > files to another machine.   Even if it has no floppy you can use
>> >> > another
>> >> > DOS machine running Laplink.  If it does have a floppy there are a lot
>> >> > of
>> >> > file transfer programs out there, from Kermit to the original version
>> >> > of
>> >> > Procomm that will fit on a single floppy.
>> >> >
>> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full
>> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky
>> >> > and
>> >> > would require some hardware tweaks even to make a slow machine... kind
>> >> > of
>> >> > an extreme project.   I've heard of a Linux distro that will fit on a
>> >> > single floppy and run on systems with limited resources
>> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one
>> >> > seems to want 4MB of RAM.
>> >> >
>> >> > There are plenty of people on the web who have too much time on their
>> >> > hands and are still playing with machines even older than the Grid...
>> >> > You
>> >> > can still buy new after-market accessories for Commodores, for example,
>> >> > so
>> >> > don't assume that there are no new solutions to old problems.
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
>> >> >>
>> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >> >> >
>> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel port
>> >> >> > to
>> >> >> > a NIC... although I've been wondering lately if it might not have
>> >> >> > made
>> >> >> > equally good sense to use a device server on the serial port...?
>> >> >> > And,
>> >> >> > of course, the Arachne browser... not many choices for a DOS browser
>> >> >> > are there? I used it to check my Yahoo web mail and I'll have to say
>> >> >> > that it gave a whole new dimension of meaning to the word "slow." Go
>> >> >> > ahead, make a pot of tea while it's loading that page, it will be a
>> >> >> > while.
>> >> >> >
>> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
>> >> >> > last
>> >> >> > week of a guy who was competing with a friend to see who could force
>> >> >> > Windows XP to run with the least resources. It won't install unless
>> >> >> > it
>> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
>> >> >> > installed
>> >> >> > you can remove RAM and underclock the machine... He said he got one
>> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
>> >> >> > half
>> >> >> > hour to boot.
>> >> >> >
>> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
>> >> >> > else
>> >> >> > to do (Hah!) it might be interesting to see if I can get online with
>> >> >> > a
>> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
>> >> >> > OS/browser
>> >> >> > could be ported to a 95LX?)... or maybe not...
>> >> >> >
>> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
>> >> >> > <doug@> wrote:
>> >> >> > >
>> >> >> > > Like the hack job? :O
>> >> >> > >
>> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
>> >> >> > > Should I take the kbd apart and clean it (will that likely
>> >> >> > > fix it?) or look for a replacement?
>> >> >> > >
>> >> >> > > So what can I do with this thing if I put more mem in it?
>> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
>> >> >> > > I have a coprocessor I could put in this but not sure of
>> >> >> > > the point there.
>> >> >> > >
>> >> >> > > I think I might like to accomplish getting it on the web.
>> >> >> > > I'd need the LAN hardware I guess.
>> >> >> > > Any other ideas?
>> >> >> > >
>> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
>> >> >> > > it that mate inside the cavity. But one of the two spring contacts
>> >> >> > > inside is "rubberized", so only the one contact hits metal to
>> >> >> > > metal.
>> >> >> > > So the P.S. only works using the cord to go from the P.S. into the
>> >> >> > > radial DC jack. Strange?
>> >> >> > >
>> >> >> > > DC
>> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
>> >> >> > wrote:
>> >> >> > > >
>> >> >> > > > Great job, Doug!
>> >> >> > > >
>> >> >> > > > Isn't it nice when you manage to salvage one of these beautiful
>> >> >> > machines? And yep, that's the way it works.
>> >> >> > > >
>> >> >> > > > Once you restore battery power to the 1287A, the CMOS registers
>> >> >> > are again active. It's just that they're filled with nonsense, so
>> >> >> > the
>> >> >> > computer tells you the clock had stopped (which it did), and simply
>> >> >> > prompts you to reset the time. Once you do that and reboot,
>> >> >> > everything's hunky-dory.
>> >> >> > > >
>> >> >> > > > You can probably find some more 256K sticks somewhere and
>> >> >> > > > upgrade
>> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great
>> >> >> > to
>> >> >> > hear the HDD is good too.
>> >> >> > > >
>> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
>> >> >> > > > that
>> >> >> > I looked at, however it was strange. It was definitely branded a
>> >> >> > 1520,
>> >> >> > and advertised that way, but the flip up screen said it was a 386
>> >> >> > machine. I decided to get it, and it was only about $90 with
>> >> >> > shipping.
>> >> >> > When I got the machine, I was very excited when it began to post,
>> >> >> > because I got a full 8MB of RAM! It of course displayed the
>> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
>> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but that
>> >> >> > was
>> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
>> >> >> > Imagine my surprise and joy when I took the keyboard off to discover
>> >> >> > that not only was this really a 386 machine (a 1530), but it also
>> >> >> > had
>> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
>> >> >> > this
>> >> >> > solved the configuration error just fine. But alas, I didn't get a
>> >> >> > triple crown winner here. The Conner drive was definitely dead. But
>> >> >> > heck, getting another HDD is easy compared to the other benefits!
>> >> >> > The
>> >> >> > original owner of this machine definitely took care of it.
>> >> >> > > >
>> >> >> > > > Phil
>> >> >> > > >
>> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > >
>> >> >> > > > > It runs! Hard Disk is GOOD.
>> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires to
>> >> >> > > > > a
>> >> >> > convenient place for the battery. Upon power up it said
>> >> >> > > > > that the RTC was stopped, and it needed setting.
>> >> >> > > > > The "stopped" message threw me, I thought something was wrong
>> >> >> > > > > with
>> >> >> > > > > the chip. It took an F1 to continue and went right through
>> >> >> > > > > POST
>> >> >> > and Autoexec.
>> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
>> >> >> > > > > Now it boots cleanly.
>> >> >> > > > > Has Lotus123 on the HD.
>> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
>> >> >> > > > > The only remaining issue is that a few keys on the keyboard
>> >> >> > > > > don't work. 123Q and spacebar. From an external kbd everything
>> >> >> > > > > works.
>> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM,
>> >> >> > > > > a
>> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > >
>> >> >> > > > > > Thanks so much that was great info. I had no idea on the X2
>> >> >> > > > > > being a rating. May have to try it without them just to
>> >> >> > > > > > make sure the rest of it is still good.
>> >> >> > > > > >
>> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
>> >> >> > <andrebakken@> wrote:
>> >> >> > > > > > >
>> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
>> >> >> > > > > > > difference.
>> >> >> > The X2 also signifies they're an enhanced type meant to go directly
>> >> >> > across the mains. Be sure to get X2 rated replacements.
>> >> >> > > > > > > The PSU will work without those cap's in place, but will
>> >> >> > radiate more interference/noise out onto the mains.
>> >> >> > > > > > >
>> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > > > >
>> >> >> > > > > > > > There are two in there that are the same.
>> >> >> > > > > > > > .15uF 250V I think I can replace them.
>> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
>> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
>> >> >> > > > > > > > I have them out already.
>> >> >> > > > > > > > Thanks for the tip on the 1287A
>> >> >> > > > > > > >
>> >> >> > > > > > > > DC
>> >> >> > > > > > > >
>> >> >> > > > > > > >
>> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
>> >> >> > wrote:
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > Good Find, DC
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > I guess they got burnt to the point where you can't
>> >> >> > identify the capcity amount. Could you give me the output voltage
>> >> >> > and
>> >> >> > amperage? I'll look through my units and see if I can identify them
>> >> >> > for you.
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > Phil
>> >> >> > > > > > > > >
>> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap in
>> >> >> > the ext p.s. unit. A stinky melt down!
>> >> >> > > > > > > > > > I'm supposing I can replace these.
>> >> >> > > > > > > > > > Any identification tips welcome, thanks.
>> >> >> > > > > > > > > > There appears to be two of the same caps, would
>> >> >> > replace both
>> >> >> > > > > > > > > > of course.
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > > > DC
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
>> >> >> > wrote:
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
>> >> >> > > > > > > > > > > that
>> >> >> > > > > > > > > > > does not respond to the power switch. The power
>> >> >> > > > > > > > > > > supply
>> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
>> >> >> > (unfortunately,
>> >> >> > > > > > > > > > > that would have been an easy problem isolation!)
>> >> >> > > > > > > > > > > So its something internal. I have the service
>> >> >> > > > > > > > > > > manuals
>> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
>> >> >> > > > > > > > > > > pointers
>> >> >> > form
>> >> >> > > > > > > > > > > folks who have already performed cold stone dead
>> >> >> > diagnosis.
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean 1530
>> >> >> > > > > > > > > > > will
>> >> >> > > > > > > > > > > be available for parts/repair!
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > > > Thanks in advance,
>> >> >> > > > > > > > > > > DC
>> >> >> > > > > > > > > > >
>> >> >> > > > > > > > > >
>> >> >> > > > > > > > >
>> >> >> > > > > > > >
>> >> >> > > > > > >
>> >> >> > > > > >
>> >> >> > > > >
>> >> >> > > >
>> >> >> > >
>> >> >> >
>> >> >>
>> >> >> Since we are on the topic of TCP does anyone have a formula stashed
>> >> >> that
>> >> >> can be easily had to run say serial (probably ppp) from something like
>> >> >> a
>> >> >> small system like the raspberry pi serially to a system with dos and a
>> >> >> stack?  It's been so long since I messed with dos environment
>> >> >> networking
>> >> >> I forget.
>> >> >>
>> >> >> I think windows of some sort had trumpet to handle part of the
>> >> >> equation,
>> >> >> but I don' t have any references right now over a dos stack.
>> >> >>
>> >> >> Probably something to do windows 3.1 or win95 / win98 would be better,
>> >> >> but I don't know if the hardware here would be up to those os's.
>> >> >>
>> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
>> >> >> asking for everything here.  Objective is to have something that could
>> >> >> suck off or load a disk image with a floppy boot.  I suspect it was a
>> >> >> difficult thing to get going in the day, though, and even wors now.
>> >> >>
>> >> >> jim
>> >> >> >
>> >> >> > ,___
>> >> >> >
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > ------------------------------------
>> >> >
>> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
>

Yahoo! Message number: 2564
Date: Tue, 16 Oct 2012 18:22:44 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

That might be very interesting!
I keep trying to get away from SCSI but it keeps sneaking back to me.
I never used any of the ieee-488 computer equipment in the day, but
did use lab equipment with it in the mid 90's.  Slow but
functional.


--- In RuGRiD-Laptop@yahoogroups.com, Lawrence Walker <bigwalk_ca@...> wrote:
>
>  I bought a GRID SCSI adaptor (the slide-in type like the VGA and power adaptors) many years ago in my enthusiactic Grid period. I must admit that I never tried it out and it is buried in my Grid boxes. There was also a program with it which inserted an interrupt entry in the BIOS to transfer control to the SCSI BIOS on the adaptor hardware like one finds with video gear The vendor also had another adaptor which allowed connection to IEE? devices like on the Commodore output. If there is any interest I could dig out the program and send an image of it.
>
>
>
>
>
>
> >________________________________
> > From: "techtalklive@..." <doug@...>
> >To: RuGRiD-Laptop@yahoogroups.com
> >Sent: Monday, October 15, 2012 9:47:39 PM
> >Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >
> >
> > 
> >Its a 1530... clock is... I dont know 20Mhz?
> >Yes checking out Backpacks now. Just collected drivers from
> >around the web for them and am checking on ebay for
> >equipment.  I suspect they will work.
> >
> >I thought I might take a look to see if there was parallel port
> >software that would work like "laplink" to tether to another PC
> >but would make a directory/drive on the the host PC appear as a drive to the 1530.
> >
> >That would be cool... and avoid purchasing old hardware.
> >
> >--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >>
> >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> >> make it, but it would be breathing hard.  As for parallel drives, see if you
> >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> >> the parallel port, but I haven't tried it on the GRiD yet.
> >>
> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> "She said it was either her or the ham radio.  Over."
> >>
> >>
> >> ----- Original Message -----
> >> From: "techtalklive@" <doug@>
> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> Sent: Sunday, October 14, 2012 7:48 PM
> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >>
> >>
> >> >
> >> > Agreed!  The Xircom Parallel port 10bT is available but has limited driver
> >> > support.
> >> > Other similar devices don't seem to be on the used market right not.
> >> > I'm also considering a parallel based disk drive at this point.
> >> > Yes, ISA itself would have a hard time saturating 10bT I think... I didn't
> >> > actually run the numbers.
> >> > DC
> >> >
> >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >> >>
> >> >> I don't think I'd even bother with the serial port.  You might get
> >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> >> >> 16550AFN
> >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> >> >> have
> >> >> to slow it down with CTS/RTS handshaking.  I think the standard parallel
> >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> >> >> even
> >> >> if you could directly tie in to the ISA bus, it would be tough.
> >> >>
> >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> >> "She said it was either her or the ham radio.  Over."
> >> >>
> >> >>
> >> >> ----- Original Message -----
> >> >> From: "Androgenoide" <androgenoide@>
> >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> >> Sent: Friday, October 12, 2012 3:37 PM
> >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> >>
> >> >>
> >> >> > The only real obstacle to DOS networking with the Grid is finding an
> >> >> > Ethernet adapter that will work through either the serial or parallel
> >> >> > ports.   I used the Xircom on the parallel port because I had one at
> >> >> > the
> >> >> > time.   I've got a serial device server now that would probably work
> >> >> > too
> >> >> > but I've got too much going on at the moment to dig out a Grid just to
> >> >> > see
> >> >> > what would be required.   Either of those solutions would be limited by
> >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit speeds
> >> >> > are out of the question!
> >> >> > Another thought... The guy who put together the Techworm boot disk also
> >> >> > had one called Networm, a single floppy that could do a dialup internet
> >> >> > connection... (if you still have access to a dialup service... if not,
> >> >> > Budget Dial Up has a prepaid service that allows you to buy just a few
> >> >> > hours at a time).
> >> >> >
> >> >> > Generally speaking, if an old machine has either a serial or parallel
> >> >> > port
> >> >> > and you can get it to boot into DOS, there is always a way to transfer
> >> >> > files to another machine.   Even if it has no floppy you can use
> >> >> > another
> >> >> > DOS machine running Laplink.  If it does have a floppy there are a lot
> >> >> > of
> >> >> > file transfer programs out there, from Kermit to the original version
> >> >> > of
> >> >> > Procomm that will fit on a single floppy.
> >> >> >
> >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a full
> >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be tricky
> >> >> > and
> >> >> > would require some hardware tweaks even to make a slow machine... kind
> >> >> > of
> >> >> > an extreme project.   I've heard of a Linux distro that will fit on a
> >> >> > single floppy and run on systems with limited resources
> >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that one
> >> >> > seems to want 4MB of RAM.
> >> >> >
> >> >> > There are plenty of people on the web who have too much time on their
> >> >> > hands and are still playing with machines even older than the Grid...
> >> >> > You
> >> >> > can still buy new after-market accessories for Commodores, for example,
> >> >> > so
> >> >> > don't assume that there are no new solutions to old problems.
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> >> >> >>
> >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> >> >> >> >
> >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel port
> >> >> >> > to
> >> >> >> > a NIC... although I've been wondering lately if it might not have
> >> >> >> > made
> >> >> >> > equally good sense to use a device server on the serial port...?
> >> >> >> > And,
> >> >> >> > of course, the Arachne browser... not many choices for a DOS browser
> >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to say
> >> >> >> > that it gave a whole new dimension of meaning to the word "slow." Go
> >> >> >> > ahead, make a pot of tea while it's loading that page, it will be a
> >> >> >> > while.
> >> >> >> >
> >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> >> >> >> > last
> >> >> >> > week of a guy who was competing with a friend to see who could force
> >> >> >> > Windows XP to run with the least resources. It won't install unless
> >> >> >> > it
> >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> >> >> >> > installed
> >> >> >> > you can remove RAM and underclock the machine... He said he got one
> >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> >> >> >> > half
> >> >> >> > hour to boot.
> >> >> >> >
> >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> >> >> >> > else
> >> >> >> > to do (Hah!) it might be interesting to see if I can get online with
> >> >> >> > a
> >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> >> >> >> > OS/browser
> >> >> >> > could be ported to a 95LX?)... or maybe not...
> >> >> >> >
> >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> >> >> >> > <doug@> wrote:
> >> >> >> > >
> >> >> >> > > Like the hack job? :O
> >> >> >> > >
> >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped screes?
> >> >> >> > > Should I take the kbd apart and clean it (will that likely
> >> >> >> > > fix it?) or look for a replacement?
> >> >> >> > >
> >> >> >> > > So what can I do with this thing if I put more mem in it?
> >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> >> >> >> > > I have a coprocessor I could put in this but not sure of
> >> >> >> > > the point there.
> >> >> >> > >
> >> >> >> > > I think I might like to accomplish getting it on the web.
> >> >> >> > > I'd need the LAN hardware I guess.
> >> >> >> > > Any other ideas?
> >> >> >> > >
> >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> >> >> >> > > it that mate inside the cavity. But one of the two spring contacts
> >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> >> >> >> > > metal.
> >> >> >> > > So the P.S. only works using the cord to go from the P.S. into the
> >> >> >> > > radial DC jack. Strange?
> >> >> >> > >
> >> >> >> > > DC
> >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
> >> >> >> > wrote:
> >> >> >> > > >
> >> >> >> > > > Great job, Doug!
> >> >> >> > > >
> >> >> >> > > > Isn't it nice when you manage to salvage one of these beautiful
> >> >> >> > machines? And yep, that's the way it works.
> >> >> >> > > >
> >> >> >> > > > Once you restore battery power to the 1287A, the CMOS registers
> >> >> >> > are again active. It's just that they're filled with nonsense, so
> >> >> >> > the
> >> >> >> > computer tells you the clock had stopped (which it did), and simply
> >> >> >> > prompts you to reset the time. Once you do that and reboot,
> >> >> >> > everything's hunky-dory.
> >> >> >> > > >
> >> >> >> > > > You can probably find some more 256K sticks somewhere and
> >> >> >> > > > upgrade
> >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. Great
> >> >> >> > to
> >> >> >> > hear the HDD is good too.
> >> >> >> > > >
> >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> >> >> >> > > > that
> >> >> >> > I looked at, however it was strange. It was definitely branded a
> >> >> >> > 1520,
> >> >> >> > and advertised that way, but the flip up screen said it was a 386
> >> >> >> > machine. I decided to get it, and it was only about $90 with
> >> >> >> > shipping.
> >> >> >> > When I got the machine, I was very excited when it began to post,
> >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but that
> >> >> >> > was
> >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> >> >> >> > Imagine my surprise and joy when I took the keyboard off to discover
> >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> >> >> >> > had
> >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> >> >> >> > this
> >> >> >> > solved the configuration error just fine. But alas, I didn't get a
> >> >> >> > triple crown winner here. The Conner drive was definitely dead. But
> >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> >> >> >> > The
> >> >> >> > original owner of this machine definitely took care of it.
> >> >> >> > > >
> >> >> >> > > > Phil
> >> >> >> > > >
> >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > >
> >> >> >> > > > > It runs! Hard Disk is GOOD.
> >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires to
> >> >> >> > > > > a
> >> >> >> > convenient place for the battery. Upon power up it said
> >> >> >> > > > > that the RTC was stopped, and it needed setting.
> >> >> >> > > > > The "stopped" message threw me, I thought something was wrong
> >> >> >> > > > > with
> >> >> >> > > > > the chip. It took an F1 to continue and went right through
> >> >> >> > > > > POST
> >> >> >> > and Autoexec.
> >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> >> >> >> > > > > Now it boots cleanly.
> >> >> >> > > > > Has Lotus123 on the HD.
> >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd everything
> >> >> >> > > > > works.
> >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB RAM,
> >> >> >> > > > > a
> >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> >> >> >> > > > >
> >> >> >> > > > >
> >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > >
> >> >> >> > > > > > Thanks so much that was great info. I had no idea on the X2
> >> >> >> > > > > > being a rating. May have to try it without them just to
> >> >> >> > > > > > make sure the rest of it is still good.
> >> >> >> > > > > >
> >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> >> >> >> > <andrebakken@> wrote:
> >> >> >> > > > > > >
> >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> >> >> >> > > > > > > difference.
> >> >> >> > The X2 also signifies they're an enhanced type meant to go directly
> >> >> >> > across the mains. Be sure to get X2 rated replacements.
> >> >> >> > > > > > > The PSU will work without those cap's in place, but will
> >> >> >> > radiate more interference/noise out onto the mains.
> >> >> >> > > > > > >
> >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > > > >
> >> >> >> > > > > > > > There are two in there that are the same.
> >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> >> >> >> > > > > > > > I have them out already.
> >> >> >> > > > > > > > Thanks for the tip on the 1287A
> >> >> >> > > > > > > >
> >> >> >> > > > > > > > DC
> >> >> >> > > > > > > >
> >> >> >> > > > > > > >
> >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@>
> >> >> >> > wrote:
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > Good Find, DC
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> >> >> >> > identify the capcity amount. Could you give me the output voltage
> >> >> >> > and
> >> >> >> > amperage? I'll look through my units and see if I can identify them
> >> >> >> > for you.
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > Phil
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap in
> >> >> >> > the ext p.s. unit. A stinky melt down!
> >> >> >> > > > > > > > > > I'm supposing I can replace these.
> >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> >> >> >> > replace both
> >> >> >> > > > > > > > > > of course.
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > > > DC
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> >> >> >> > > > > > > > > > > that
> >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> >> >> >> > > > > > > > > > > supply
> >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> >> >> >> > (unfortunately,
> >> >> >> > > > > > > > > > > that would have been an easy problem isolation!)
> >> >> >> > > > > > > > > > > So its something internal. I have the service
> >> >> >> > > > > > > > > > > manuals
> >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> >> >> >> > > > > > > > > > > pointers
> >> >> >> > form
> >> >> >> > > > > > > > > > > folks who have already performed cold stone dead
> >> >> >> > diagnosis.
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean 1530
> >> >> >> > > > > > > > > > > will
> >> >> >> > > > > > > > > > > be available for parts/repair!
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > > > Thanks in advance,
> >> >> >> > > > > > > > > > > DC
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > >
> >> >> >> > > > > > >
> >> >> >> > > > > >
> >> >> >> > > > >
> >> >> >> > > >
> >> >> >> > >
> >> >> >> >
> >> >> >>
> >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> >> >> >> that
> >> >> >> can be easily had to run say serial (probably ppp) from something like
> >> >> >> a
> >> >> >> small system like the raspberry pi serially to a system with dos and a
> >> >> >> stack?  It's been so long since I messed with dos environment
> >> >> >> networking
> >> >> >> I forget.
> >> >> >>
> >> >> >> I think windows of some sort had trumpet to handle part of the
> >> >> >> equation,
> >> >> >> but I don' t have any references right now over a dos stack.
> >> >> >>
> >> >> >> Probably something to do windows 3.1 or win95 / win98 would be better,
> >> >> >> but I don't know if the hardware here would be up to those os's.
> >> >> >>
> >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. I'm
> >> >> >> asking for everything here.  Objective is to have something that could
> >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was a
> >> >> >> difficult thing to get going in the day, though, and even wors now.
> >> >> >>
> >> >> >> jim
> >> >> >> >
> >> >> >> > ,___
> >> >> >> >
> >> >> >>
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> > ------------------------------------
> >> >> >
> >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> >> >
> >> >> >
> >> >> >
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> > ------------------------------------
> >> >
> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> >
> >
>

Yahoo! Message number: 2565
Date: Tue, 16 Oct 2012 18:25:15 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
As I might have mentioned in another post, if I could get
another PC to appear as a mounted drive to the GRiD I'd be in
real fat city.  Then I'd have the machine wide open to the rest of the world.
Any ideas there?

--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>
> Good luck with the Backpack stuff.
>
> There's a book called "Hot Links", which was produced by the same people
> that produced LapLink.  In the back of the book is a disk with programs that
> will let you transfer files, either via null modem cable or LapLink cable.
> I doubt that the book is still in print, but it might be something to look
> for.  If you get the book without the disk, let me know, and I'll get you
> the software.  I can't remember if it lets you map the host drive to the
> client machine, but that would be cool, if it does that.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio.  Over."
>
>
> ----- Original Message -----
> From: "techtalklive@..." <doug@...>
> To: <RuGRiD-Laptop@yahoogroups.com>
> Sent: Monday, October 15, 2012 10:47 PM
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
> > Its a 1530... clock is... I dont know 20Mhz?
> > Yes checking out Backpacks now. Just collected drivers from
> > around the web for them and am checking on ebay for
> > equipment.  I suspect they will work.
> >
> > I thought I might take a look to see if there was parallel port
> > software that would work like "laplink" to tether to another PC
> > but would make a directory/drive on the the host PC appear as a drive to
> > the 1530.
> >
> > That would be cool... and avoid purchasing old hardware.
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >>
> >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> >> make it, but it would be breathing hard.  As for parallel drives, see if
> >> you
> >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> >> the parallel port, but I haven't tried it on the GRiD yet.
> >>
> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> "She said it was either her or the ham radio.  Over."
> >>
> >>
> >> ----- Original Message -----
> >> From: "techtalklive@" <doug@>
> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> Sent: Sunday, October 14, 2012 7:48 PM
> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >>
> >>
> >> >
> >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> >> > driver
> >> > support.
> >> > Other similar devices don't seem to be on the used market right not.
> >> > I'm also considering a parallel based disk drive at this point.
> >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> >> > didn't
> >> > actually run the numbers.
> >> > DC
> >> >
> >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >> >>
> >> >> I don't think I'd even bother with the serial port.  You might get
> >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> >> >> 16550AFN
> >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> >> >> have
> >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> >> >> parallel
> >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> >> >> even
> >> >> if you could directly tie in to the ISA bus, it would be tough.
> >> >>
> >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> >> "She said it was either her or the ham radio.  Over."
> >> >>
> >> >>
> >> >> ----- Original Message -----
> >> >> From: "Androgenoide" <androgenoide@>
> >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> >> Sent: Friday, October 12, 2012 3:37 PM
> >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> >>
> >> >>
> >> >> > The only real obstacle to DOS networking with the Grid is finding an
> >> >> > Ethernet adapter that will work through either the serial or
> >> >> > parallel
> >> >> > ports.   I used the Xircom on the parallel port because I had one at
> >> >> > the
> >> >> > time.   I've got a serial device server now that would probably work
> >> >> > too
> >> >> > but I've got too much going on at the moment to dig out a Grid just
> >> >> > to
> >> >> > see
> >> >> > what would be required.   Either of those solutions would be limited
> >> >> > by
> >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> >> >> > speeds
> >> >> > are out of the question!
> >> >> > Another thought... The guy who put together the Techworm boot disk
> >> >> > also
> >> >> > had one called Networm, a single floppy that could do a dialup
> >> >> > internet
> >> >> > connection... (if you still have access to a dialup service... if
> >> >> > not,
> >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> >> >> > few
> >> >> > hours at a time).
> >> >> >
> >> >> > Generally speaking, if an old machine has either a serial or
> >> >> > parallel
> >> >> > port
> >> >> > and you can get it to boot into DOS, there is always a way to
> >> >> > transfer
> >> >> > files to another machine.   Even if it has no floppy you can use
> >> >> > another
> >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> >> >> > lot
> >> >> > of
> >> >> > file transfer programs out there, from Kermit to the original
> >> >> > version
> >> >> > of
> >> >> > Procomm that will fit on a single floppy.
> >> >> >
> >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> >> >> > full
> >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> >> >> > tricky
> >> >> > and
> >> >> > would require some hardware tweaks even to make a slow machine...
> >> >> > kind
> >> >> > of
> >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> >> >> > a
> >> >> > single floppy and run on systems with limited resources
> >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> >> >> > one
> >> >> > seems to want 4MB of RAM.
> >> >> >
> >> >> > There are plenty of people on the web who have too much time on
> >> >> > their
> >> >> > hands and are still playing with machines even older than the
> >> >> > Grid...
> >> >> > You
> >> >> > can still buy new after-market accessories for Commodores, for
> >> >> > example,
> >> >> > so
> >> >> > don't assume that there are no new solutions to old problems.
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> >> >> >>
> >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> >> >> >> >
> >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> >> >> >> > port
> >> >> >> > to
> >> >> >> > a NIC... although I've been wondering lately if it might not have
> >> >> >> > made
> >> >> >> > equally good sense to use a device server on the serial port...?
> >> >> >> > And,
> >> >> >> > of course, the Arachne browser... not many choices for a DOS
> >> >> >> > browser
> >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> >> >> >> > say
> >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> >> >> >> > Go
> >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> >> >> >> > a
> >> >> >> > while.
> >> >> >> >
> >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> >> >> >> > last
> >> >> >> > week of a guy who was competing with a friend to see who could
> >> >> >> > force
> >> >> >> > Windows XP to run with the least resources. It won't install
> >> >> >> > unless
> >> >> >> > it
> >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> >> >> >> > installed
> >> >> >> > you can remove RAM and underclock the machine... He said he got
> >> >> >> > one
> >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> >> >> >> > half
> >> >> >> > hour to boot.
> >> >> >> >
> >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> >> >> >> > else
> >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> >> >> >> > with
> >> >> >> > a
> >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> >> >> >> > OS/browser
> >> >> >> > could be ported to a 95LX?)... or maybe not...
> >> >> >> >
> >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> >> >> >> > <doug@> wrote:
> >> >> >> > >
> >> >> >> > > Like the hack job? :O
> >> >> >> > >
> >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> >> >> >> > > screes?
> >> >> >> > > Should I take the kbd apart and clean it (will that likely
> >> >> >> > > fix it?) or look for a replacement?
> >> >> >> > >
> >> >> >> > > So what can I do with this thing if I put more mem in it?
> >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> >> >> >> > > I have a coprocessor I could put in this but not sure of
> >> >> >> > > the point there.
> >> >> >> > >
> >> >> >> > > I think I might like to accomplish getting it on the web.
> >> >> >> > > I'd need the LAN hardware I guess.
> >> >> >> > > Any other ideas?
> >> >> >> > >
> >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> >> >> >> > > it that mate inside the cavity. But one of the two spring
> >> >> >> > > contacts
> >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> >> >> >> > > metal.
> >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> >> >> >> > > the
> >> >> >> > > radial DC jack. Strange?
> >> >> >> > >
> >> >> >> > > DC
> >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> >> >> >> > <Jeriddian@>
> >> >> >> > wrote:
> >> >> >> > > >
> >> >> >> > > > Great job, Doug!
> >> >> >> > > >
> >> >> >> > > > Isn't it nice when you manage to salvage one of these
> >> >> >> > > > beautiful
> >> >> >> > machines? And yep, that's the way it works.
> >> >> >> > > >
> >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> >> >> >> > > > registers
> >> >> >> > are again active. It's just that they're filled with nonsense, so
> >> >> >> > the
> >> >> >> > computer tells you the clock had stopped (which it did), and
> >> >> >> > simply
> >> >> >> > prompts you to reset the time. Once you do that and reboot,
> >> >> >> > everything's hunky-dory.
> >> >> >> > > >
> >> >> >> > > > You can probably find some more 256K sticks somewhere and
> >> >> >> > > > upgrade
> >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> >> >> >> > Great
> >> >> >> > to
> >> >> >> > hear the HDD is good too.
> >> >> >> > > >
> >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> >> >> >> > > > that
> >> >> >> > I looked at, however it was strange. It was definitely branded a
> >> >> >> > 1520,
> >> >> >> > and advertised that way, but the flip up screen said it was a 386
> >> >> >> > machine. I decided to get it, and it was only about $90 with
> >> >> >> > shipping.
> >> >> >> > When I got the machine, I was very excited when it began to post,
> >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> >> >> >> > that
> >> >> >> > was
> >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> >> >> >> > discover
> >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> >> >> >> > had
> >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> >> >> >> > this
> >> >> >> > solved the configuration error just fine. But alas, I didn't get
> >> >> >> > a
> >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> >> >> >> > But
> >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> >> >> >> > The
> >> >> >> > original owner of this machine definitely took care of it.
> >> >> >> > > >
> >> >> >> > > > Phil
> >> >> >> > > >
> >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > >
> >> >> >> > > > > It runs! Hard Disk is GOOD.
> >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> >> >> >> > > > > to
> >> >> >> > > > > a
> >> >> >> > convenient place for the battery. Upon power up it said
> >> >> >> > > > > that the RTC was stopped, and it needed setting.
> >> >> >> > > > > The "stopped" message threw me, I thought something was
> >> >> >> > > > > wrong
> >> >> >> > > > > with
> >> >> >> > > > > the chip. It took an F1 to continue and went right through
> >> >> >> > > > > POST
> >> >> >> > and Autoexec.
> >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> >> >> >> > > > > Now it boots cleanly.
> >> >> >> > > > > Has Lotus123 on the HD.
> >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> >> >> >> > > > > everything
> >> >> >> > > > > works.
> >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> >> >> >> > > > > RAM,
> >> >> >> > > > > a
> >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> >> >> >> > > > >
> >> >> >> > > > >
> >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > >
> >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> >> >> >> > > > > > X2
> >> >> >> > > > > > being a rating. May have to try it without them just to
> >> >> >> > > > > > make sure the rest of it is still good.
> >> >> >> > > > > >
> >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> >> >> >> > <andrebakken@> wrote:
> >> >> >> > > > > > >
> >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> >> >> >> > > > > > > difference.
> >> >> >> > The X2 also signifies they're an enhanced type meant to go
> >> >> >> > directly
> >> >> >> > across the mains. Be sure to get X2 rated replacements.
> >> >> >> > > > > > > The PSU will work without those cap's in place, but
> >> >> >> > > > > > > will
> >> >> >> > radiate more interference/noise out onto the mains.
> >> >> >> > > > > > >
> >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > > > >
> >> >> >> > > > > > > > There are two in there that are the same.
> >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> >> >> >> > > > > > > > I have them out already.
> >> >> >> > > > > > > > Thanks for the tip on the 1287A
> >> >> >> > > > > > > >
> >> >> >> > > > > > > > DC
> >> >> >> > > > > > > >
> >> >> >> > > > > > > >
> >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> >> >> >> > <Jeriddian@>
> >> >> >> > wrote:
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > Good Find, DC
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> >> >> >> > identify the capcity amount. Could you give me the output voltage
> >> >> >> > and
> >> >> >> > amperage? I'll look through my units and see if I can identify
> >> >> >> > them
> >> >> >> > for you.
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > Phil
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> >> >> >> > > > > > > > > > in
> >> >> >> > the ext p.s. unit. A stinky melt down!
> >> >> >> > > > > > > > > > I'm supposing I can replace these.
> >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> >> >> >> > replace both
> >> >> >> > > > > > > > > > of course.
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > > > DC
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> >> >> >> > wrote:
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> >> >> >> > > > > > > > > > > that
> >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> >> >> >> > > > > > > > > > > supply
> >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> >> >> >> > (unfortunately,
> >> >> >> > > > > > > > > > > that would have been an easy problem
> >> >> >> > > > > > > > > > > isolation!)
> >> >> >> > > > > > > > > > > So its something internal. I have the service
> >> >> >> > > > > > > > > > > manuals
> >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> >> >> >> > > > > > > > > > > pointers
> >> >> >> > form
> >> >> >> > > > > > > > > > > folks who have already performed cold stone
> >> >> >> > > > > > > > > > > dead
> >> >> >> > diagnosis.
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> >> >> >> > > > > > > > > > > 1530
> >> >> >> > > > > > > > > > > will
> >> >> >> > > > > > > > > > > be available for parts/repair!
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > > > Thanks in advance,
> >> >> >> > > > > > > > > > > DC
> >> >> >> > > > > > > > > > >
> >> >> >> > > > > > > > > >
> >> >> >> > > > > > > > >
> >> >> >> > > > > > > >
> >> >> >> > > > > > >
> >> >> >> > > > > >
> >> >> >> > > > >
> >> >> >> > > >
> >> >> >> > >
> >> >> >> >
> >> >> >>
> >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> >> >> >> that
> >> >> >> can be easily had to run say serial (probably ppp) from something
> >> >> >> like
> >> >> >> a
> >> >> >> small system like the raspberry pi serially to a system with dos 
> >> >> >> and a
> >> >> >> stack?  It's been so long since I messed with dos environment
> >> >> >> networking
> >> >> >> I forget.
> >> >> >>
> >> >> >> I think windows of some sort had trumpet to handle part of the
> >> >> >> equation,
> >> >> >> but I don' t have any references right now over a dos stack.
> >> >> >>
> >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> >> >> >> better,
> >> >> >> but I don't know if the hardware here would be up to those os's.
> >> >> >>
> >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> >> >> >> I'm
> >> >> >> asking for everything here.  Objective is to have something that
> >> >> >> could
> >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> >> >> >> a
> >> >> >> difficult thing to get going in the day, though, and even wors now.
> >> >> >>
> >> >> >> jim
> >> >> >> >
> >> >> >> > ,___
> >> >> >> >
> >> >> >>
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> > ------------------------------------
> >> >> >
> >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> >> >
> >> >> >
> >> >> >
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> > ------------------------------------
> >> >
> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
>

Yahoo! Message number: 2566
Date: Wed, 17 Oct 2012 02:09:14 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.

The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> As I might have mentioned in another post, if I could get
> another PC to appear as a mounted drive to the GRiD I'd be in
> real fat city.  Then I'd have the machine wide open to the rest of the world.
> Any ideas there?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >
> > Good luck with the Backpack stuff.
> >
> > There's a book called "Hot Links", which was produced by the same people
> > that produced LapLink.  In the back of the book is a disk with programs that
> > will let you transfer files, either via null modem cable or LapLink cable.
> > I doubt that the book is still in print, but it might be something to look
> > for.  If you get the book without the disk, let me know, and I'll get you
> > the software.  I can't remember if it lets you map the host drive to the
> > client machine, but that would be cool, if it does that.
> >
> > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > "She said it was either her or the ham radio.  Over."
> >
> >
> > ----- Original Message -----
> > From: "techtalklive@" <doug@>
> > To: <RuGRiD-Laptop@yahoogroups.com>
> > Sent: Monday, October 15, 2012 10:47 PM
> > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >
> >
> > > Its a 1530... clock is... I dont know 20Mhz?
> > > Yes checking out Backpacks now. Just collected drivers from
> > > around the web for them and am checking on ebay for
> > > equipment.  I suspect they will work.
> > >
> > > I thought I might take a look to see if there was parallel port
> > > software that would work like "laplink" to tether to another PC
> > > but would make a directory/drive on the the host PC appear as a drive to
> > > the 1530.
> > >
> > > That would be cool... and avoid purchasing old hardware.
> > >
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >>
> > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > >> you
> > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > >> the parallel port, but I haven't tried it on the GRiD yet.
> > >>
> > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> "She said it was either her or the ham radio.  Over."
> > >>
> > >>
> > >> ----- Original Message -----
> > >> From: "techtalklive@" <doug@>
> > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> Sent: Sunday, October 14, 2012 7:48 PM
> > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >>
> > >>
> > >> >
> > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > >> > driver
> > >> > support.
> > >> > Other similar devices don't seem to be on the used market right not.
> > >> > I'm also considering a parallel based disk drive at this point.
> > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > >> > didn't
> > >> > actually run the numbers.
> > >> > DC
> > >> >
> > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >> >>
> > >> >> I don't think I'd even bother with the serial port.  You might get
> > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > >> >> 16550AFN
> > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > >> >> have
> > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > >> >> parallel
> > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > >> >> even
> > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > >> >>
> > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> "She said it was either her or the ham radio.  Over."
> > >> >>
> > >> >>
> > >> >> ----- Original Message -----
> > >> >> From: "Androgenoide" <androgenoide@>
> > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >>
> > >> >>
> > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > >> >> > Ethernet adapter that will work through either the serial or
> > >> >> > parallel
> > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > >> >> > the
> > >> >> > time.   I've got a serial device server now that would probably work
> > >> >> > too
> > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > >> >> > to
> > >> >> > see
> > >> >> > what would be required.   Either of those solutions would be limited
> > >> >> > by
> > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > >> >> > speeds
> > >> >> > are out of the question!
> > >> >> > Another thought... The guy who put together the Techworm boot disk
> > >> >> > also
> > >> >> > had one called Networm, a single floppy that could do a dialup
> > >> >> > internet
> > >> >> > connection... (if you still have access to a dialup service... if
> > >> >> > not,
> > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > >> >> > few
> > >> >> > hours at a time).
> > >> >> >
> > >> >> > Generally speaking, if an old machine has either a serial or
> > >> >> > parallel
> > >> >> > port
> > >> >> > and you can get it to boot into DOS, there is always a way to
> > >> >> > transfer
> > >> >> > files to another machine.   Even if it has no floppy you can use
> > >> >> > another
> > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > >> >> > lot
> > >> >> > of
> > >> >> > file transfer programs out there, from Kermit to the original
> > >> >> > version
> > >> >> > of
> > >> >> > Procomm that will fit on a single floppy.
> > >> >> >
> > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > >> >> > full
> > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > >> >> > tricky
> > >> >> > and
> > >> >> > would require some hardware tweaks even to make a slow machine...
> > >> >> > kind
> > >> >> > of
> > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > >> >> > a
> > >> >> > single floppy and run on systems with limited resources
> > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > >> >> > one
> > >> >> > seems to want 4MB of RAM.
> > >> >> >
> > >> >> > There are plenty of people on the web who have too much time on
> > >> >> > their
> > >> >> > hands and are still playing with machines even older than the
> > >> >> > Grid...
> > >> >> > You
> > >> >> > can still buy new after-market accessories for Commodores, for
> > >> >> > example,
> > >> >> > so
> > >> >> > don't assume that there are no new solutions to old problems.
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > >> >> >>
> > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > >> >> >> >
> > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > >> >> >> > port
> > >> >> >> > to
> > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > >> >> >> > made
> > >> >> >> > equally good sense to use a device server on the serial port...?
> > >> >> >> > And,
> > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > >> >> >> > browser
> > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > >> >> >> > say
> > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > >> >> >> > Go
> > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > >> >> >> > a
> > >> >> >> > while.
> > >> >> >> >
> > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > >> >> >> > last
> > >> >> >> > week of a guy who was competing with a friend to see who could
> > >> >> >> > force
> > >> >> >> > Windows XP to run with the least resources. It won't install
> > >> >> >> > unless
> > >> >> >> > it
> > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > >> >> >> > installed
> > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > >> >> >> > one
> > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > >> >> >> > half
> > >> >> >> > hour to boot.
> > >> >> >> >
> > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > >> >> >> > else
> > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > >> >> >> > with
> > >> >> >> > a
> > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > >> >> >> > OS/browser
> > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > >> >> >> >
> > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > >> >> >> > <doug@> wrote:
> > >> >> >> > >
> > >> >> >> > > Like the hack job? :O
> > >> >> >> > >
> > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > >> >> >> > > screes?
> > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > >> >> >> > > fix it?) or look for a replacement?
> > >> >> >> > >
> > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > >> >> >> > > the point there.
> > >> >> >> > >
> > >> >> >> > > I think I might like to accomplish getting it on the web.
> > >> >> >> > > I'd need the LAN hardware I guess.
> > >> >> >> > > Any other ideas?
> > >> >> >> > >
> > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > >> >> >> > > contacts
> > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > >> >> >> > > metal.
> > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > >> >> >> > > the
> > >> >> >> > > radial DC jack. Strange?
> > >> >> >> > >
> > >> >> >> > > DC
> > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > >> >> >> > <Jeriddian@>
> > >> >> >> > wrote:
> > >> >> >> > > >
> > >> >> >> > > > Great job, Doug!
> > >> >> >> > > >
> > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > >> >> >> > > > beautiful
> > >> >> >> > machines? And yep, that's the way it works.
> > >> >> >> > > >
> > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > >> >> >> > > > registers
> > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > >> >> >> > the
> > >> >> >> > computer tells you the clock had stopped (which it did), and
> > >> >> >> > simply
> > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > >> >> >> > everything's hunky-dory.
> > >> >> >> > > >
> > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > >> >> >> > > > upgrade
> > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > >> >> >> > Great
> > >> >> >> > to
> > >> >> >> > hear the HDD is good too.
> > >> >> >> > > >
> > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > >> >> >> > > > that
> > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > >> >> >> > 1520,
> > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > >> >> >> > shipping.
> > >> >> >> > When I got the machine, I was very excited when it began to post,
> > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > >> >> >> > that
> > >> >> >> > was
> > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > >> >> >> > discover
> > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > >> >> >> > had
> > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > >> >> >> > this
> > >> >> >> > solved the configuration error just fine. But alas, I didn't get 
> > >> >> >> > a
> > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > >> >> >> > But
> > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > >> >> >> > The
> > >> >> >> > original owner of this machine definitely took care of it.
> > >> >> >> > > >
> > >> >> >> > > > Phil
> > >> >> >> > > >
> > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > >> >> >> > wrote:
> > >> >> >> > > > >
> > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > >> >> >> > > > > to
> > >> >> >> > > > > a
> > >> >> >> > convenient place for the battery. Upon power up it said
> > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > >> >> >> > > > > wrong
> > >> >> >> > > > > with
> > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > >> >> >> > > > > POST
> > >> >> >> > and Autoexec.
> > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > >> >> >> > > > > Now it boots cleanly.
> > >> >> >> > > > > Has Lotus123 on the HD.
> > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > >> >> >> > > > > everything
> > >> >> >> > > > > works.
> > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > >> >> >> > > > > RAM,
> > >> >> >> > > > > a
> > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > >> >> >> > > > >
> > >> >> >> > > > >
> > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > >> >> >> > wrote:
> > >> >> >> > > > > >
> > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > >> >> >> > > > > > X2
> > >> >> >> > > > > > being a rating. May have to try it without them just to
> > >> >> >> > > > > > make sure the rest of it is still good.
> > >> >> >> > > > > >
> > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > >> >> >> > <andrebakken@> wrote:
> > >> >> >> > > > > > >
> > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > >> >> >> > > > > > > difference.
> > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > >> >> >> > directly
> > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > >> >> >> > > > > > > will
> > >> >> >> > radiate more interference/noise out onto the mains.
> > >> >> >> > > > > > >
> > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > >> >> >> > wrote:
> > >> >> >> > > > > > > >
> > >> >> >> > > > > > > > There are two in there that are the same.
> > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > >> >> >> > > > > > > > I have them out already.
> > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > >> >> >> > > > > > > >
> > >> >> >> > > > > > > > DC
> > >> >> >> > > > > > > >
> > >> >> >> > > > > > > >
> > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > >> >> >> > <Jeriddian@>
> > >> >> >> > wrote:
> > >> >> >> > > > > > > > >
> > >> >> >> > > > > > > > > Good Find, DC
> > >> >> >> > > > > > > > >
> > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > >> >> >> > and
> > >> >> >> > amperage? I'll look through my units and see if I can identify
> > >> >> >> > them
> > >> >> >> > for you.
> > >> >> >> > > > > > > > >
> > >> >> >> > > > > > > > > Phil
> > >> >> >> > > > > > > > >
> > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > >> >> >> > wrote:
> > >> >> >> > > > > > > > > >
> > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > >> >> >> > > > > > > > > > in
> > >> >> >> > the ext p.s. unit. A stinky melt down!
> > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > >> >> >> > replace both
> > >> >> >> > > > > > > > > > of course.
> > >> >> >> > > > > > > > > >
> > >> >> >> > > > > > > > > > DC
> > >> >> >> > > > > > > > > >
> > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > >> >> >> > wrote:
> > >> >> >> > > > > > > > > > >
> > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > >> >> >> > > > > > > > > > > that
> > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > >> >> >> > > > > > > > > > > supply
> > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > >> >> >> > (unfortunately,
> > >> >> >> > > > > > > > > > > that would have been an easy problem
> > >> >> >> > > > > > > > > > > isolation!)
> > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > >> >> >> > > > > > > > > > > manuals
> > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > >> >> >> > > > > > > > > > > pointers
> > >> >> >> > form
> > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > >> >> >> > > > > > > > > > > dead
> > >> >> >> > diagnosis.
> > >> >> >> > > > > > > > > > >
> > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > >> >> >> > > > > > > > > > > 1530
> > >> >> >> > > > > > > > > > > will
> > >> >> >> > > > > > > > > > > be available for parts/repair!
> > >> >> >> > > > > > > > > > >
> > >> >> >> > > > > > > > > > > Thanks in advance,
> > >> >> >> > > > > > > > > > > DC
> > >> >> >> > > > > > > > > > >
> > >> >> >> > > > > > > > > >
> > >> >> >> > > > > > > > >
> > >> >> >> > > > > > > >
> > >> >> >> > > > > > >
> > >> >> >> > > > > >
> > >> >> >> > > > >
> > >> >> >> > > >
> > >> >> >> > >
> > >> >> >> >
> > >> >> >>
> > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > >> >> >> that
> > >> >> >> can be easily had to run say serial (probably ppp) from something
> > >> >> >> like
> > >> >> >> a
> > >> >> >> small system like the raspberry pi serially to a system with dos
> > >> >> >> and a
> > >> >> >> stack?  It's been so long since I messed with dos environment
> > >> >> >> networking
> > >> >> >> I forget.
> > >> >> >>
> > >> >> >> I think windows of some sort had trumpet to handle part of the
> > >> >> >> equation,
> > >> >> >> but I don' t have any references right now over a dos stack.
> > >> >> >>
> > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > >> >> >> better,
> > >> >> >> but I don't know if the hardware here would be up to those os's.
> > >> >> >>
> > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > >> >> >> I'm
> > >> >> >> asking for everything here.  Objective is to have something that
> > >> >> >> could
> > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > >> >> >> a
> > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > >> >> >>
> > >> >> >> jim
> > >> >> >> >
> > >> >> >> > ,___
> > >> >> >> >
> > >> >> >>
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >> > ------------------------------------
> > >> >> >
> > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >> >> >
> > >> >> >
> > >> >> >
> > >> >>
> > >> >
> > >> >
> > >> >
> > >> >
> > >> > ------------------------------------
> > >> >
> > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >> >
> > >> >
> > >> >
> > >>
> > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >
> > >
> > >
> >
>

Yahoo! Message number: 2567
Date: Wed, 17 Oct 2012 07:04:05 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Well that sounds promising.  The only thing that would
top that would be a native SCSI attached to the bus connectors
in the accessory port.  A ParPort one would do in the meantime.
Thanks!

I'm thinking of moding some SIMM chips to go in the SIPP sockets.
Anyone know the mem speed?  Hate to take the thing apart right
now to find out.
Thanks!

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
>
> The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > As I might have mentioned in another post, if I could get
> > another PC to appear as a mounted drive to the GRiD I'd be in
> > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > Any ideas there?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >
> > > Good luck with the Backpack stuff.
> > >
> > > There's a book called "Hot Links", which was produced by the same people
> > > that produced LapLink.  In the back of the book is a disk with programs that
> > > will let you transfer files, either via null modem cable or LapLink cable.
> > > I doubt that the book is still in print, but it might be something to look
> > > for.  If you get the book without the disk, let me know, and I'll get you
> > > the software.  I can't remember if it lets you map the host drive to the
> > > client machine, but that would be cool, if it does that.
> > >
> > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > "She said it was either her or the ham radio.  Over."
> > >
> > >
> > > ----- Original Message -----
> > > From: "techtalklive@" <doug@>
> > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > Sent: Monday, October 15, 2012 10:47 PM
> > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >
> > >
> > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > Yes checking out Backpacks now. Just collected drivers from
> > > > around the web for them and am checking on ebay for
> > > > equipment.  I suspect they will work.
> > > >
> > > > I thought I might take a look to see if there was parallel port
> > > > software that would work like "laplink" to tether to another PC
> > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > the 1530.
> > > >
> > > > That would be cool... and avoid purchasing old hardware.
> > > >
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >>
> > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > >> you
> > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > >>
> > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> "She said it was either her or the ham radio.  Over."
> > > >>
> > > >>
> > > >> ----- Original Message -----
> > > >> From: "techtalklive@" <doug@>
> > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >>
> > > >>
> > > >> >
> > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > >> > driver
> > > >> > support.
> > > >> > Other similar devices don't seem to be on the used market right not.
> > > >> > I'm also considering a parallel based disk drive at this point.
> > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > >> > didn't
> > > >> > actually run the numbers.
> > > >> > DC
> > > >> >
> > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >> >>
> > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > >> >> 16550AFN
> > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > >> >> have
> > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard 
> > > >> >> parallel
> > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > >> >> even
> > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > >> >>
> > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> >> "She said it was either her or the ham radio.  Over."
> > > >> >>
> > > >> >>
> > > >> >> ----- Original Message -----
> > > >> >> From: "Androgenoide" <androgenoide@>
> > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >> >>
> > > >> >>
> > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > >> >> > Ethernet adapter that will work through either the serial or
> > > >> >> > parallel
> > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > >> >> > the
> > > >> >> > time.   I've got a serial device server now that would probably work
> > > >> >> > too
> > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > >> >> > to
> > > >> >> > see
> > > >> >> > what would be required.   Either of those solutions would be limited
> > > >> >> > by
> > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > >> >> > speeds
> > > >> >> > are out of the question!
> > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > >> >> > also
> > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > >> >> > internet
> > > >> >> > connection... (if you still have access to a dialup service... if
> > > >> >> > not,
> > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > >> >> > few
> > > >> >> > hours at a time).
> > > >> >> >
> > > >> >> > Generally speaking, if an old machine has either a serial or
> > > >> >> > parallel
> > > >> >> > port
> > > >> >> > and you can get it to boot into DOS, there is always a way to
> > > >> >> > transfer
> > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > >> >> > another
> > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > >> >> > lot
> > > >> >> > of
> > > >> >> > file transfer programs out there, from Kermit to the original
> > > >> >> > version
> > > >> >> > of
> > > >> >> > Procomm that will fit on a single floppy.
> > > >> >> >
> > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > >> >> > full
> > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > >> >> > tricky
> > > >> >> > and
> > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > >> >> > kind
> > > >> >> > of
> > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > >> >> > a
> > > >> >> > single floppy and run on systems with limited resources
> > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > >> >> > one
> > > >> >> > seems to want 4MB of RAM.
> > > >> >> >
> > > >> >> > There are plenty of people on the web who have too much time on
> > > >> >> > their
> > > >> >> > hands and are still playing with machines even older than the
> > > >> >> > Grid...
> > > >> >> > You
> > > >> >> > can still buy new after-market accessories for Commodores, for
> > > >> >> > example,
> > > >> >> > so
> > > >> >> > don't assume that there are no new solutions to old problems.
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > >> >> >>
> > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > >> >> >> >
> > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > >> >> >> > port
> > > >> >> >> > to
> > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > >> >> >> > made
> > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > >> >> >> > And,
> > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > >> >> >> > browser
> > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > >> >> >> > say
> > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > >> >> >> > Go
> > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > >> >> >> > a
> > > >> >> >> > while.
> > > >> >> >> >
> > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > >> >> >> > last
> > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > >> >> >> > force
> > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > >> >> >> > unless
> > > >> >> >> > it
> > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > >> >> >> > installed
> > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > >> >> >> > one
> > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > >> >> >> > half
> > > >> >> >> > hour to boot.
> > > >> >> >> >
> > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > >> >> >> > else
> > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > >> >> >> > with
> > > >> >> >> > a
> > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > >> >> >> > OS/browser
> > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > >> >> >> >
> > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > >> >> >> > <doug@> wrote:
> > > >> >> >> > >
> > > >> >> >> > > Like the hack job? :O
> > > >> >> >> > >
> > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > >> >> >> > > screes?
> > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > >> >> >> > > fix it?) or look for a replacement?
> > > >> >> >> > >
> > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > >> >> >> > > the point there.
> > > >> >> >> > >
> > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > >> >> >> > > I'd need the LAN hardware I guess.
> > > >> >> >> > > Any other ideas?
> > > >> >> >> > >
> > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > >> >> >> > > contacts
> > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > >> >> >> > > metal.
> > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > >> >> >> > > the
> > > >> >> >> > > radial DC jack. Strange?
> > > >> >> >> > >
> > > >> >> >> > > DC
> > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > >
> > > >> >> >> > > > Great job, Doug!
> > > >> >> >> > > >
> > > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > > >> >> >> > > > beautiful
> > > >> >> >> > machines? And yep, that's the way it works.
> > > >> >> >> > > >
> > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > >> >> >> > > > registers
> > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > >> >> >> > the
> > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > >> >> >> > simply
> > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > >> >> >> > everything's hunky-dory.
> > > >> >> >> > > >
> > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > >> >> >> > > > upgrade
> > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > >> >> >> > Great
> > > >> >> >> > to
> > > >> >> >> > hear the HDD is good too.
> > > >> >> >> > > >
> > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > >> >> >> > > > that
> > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > >> >> >> > 1520,
> > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > >> >> >> > shipping.
> > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > >> >> >> > that
> > > >> >> >> > was
> > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > >> >> >> > discover
> > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > >> >> >> > had
> > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > >> >> >> > this
> > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > >> >> >> > a
> > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > >> >> >> > But
> > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > >> >> >> > The
> > > >> >> >> > original owner of this machine definitely took care of it.
> > > >> >> >> > > >
> > > >> >> >> > > > Phil
> > > >> >> >> > > >
> > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > >
> > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > >> >> >> > > > > to
> > > >> >> >> > > > > a
> > > >> >> >> > convenient place for the battery. Upon power up it said
> > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > >> >> >> > > > > wrong
> > > >> >> >> > > > > with
> > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > >> >> >> > > > > POST
> > > >> >> >> > and Autoexec.
> > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > >> >> >> > > > > Now it boots cleanly.
> > > >> >> >> > > > > Has Lotus123 on the HD.
> > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > > >> >> >> > > > > everything
> > > >> >> >> > > > > works.
> > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > >> >> >> > > > > RAM,
> > > >> >> >> > > > > a
> > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > >> >> >> > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > >> >> >> > > > > > X2
> > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > >> >> >> > > > > > make sure the rest of it is still good.
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > >> >> >> > <andrebakken@> wrote:
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > >> >> >> > > > > > > difference.
> > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > >> >> >> > directly
> > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > >> >> >> > > > > > > will
> > > >> >> >> > radiate more interference/noise out onto the mains.
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > There are two in there that are the same.
> > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > >> >> >> > > > > > > > I have them out already.
> > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > DC
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Good Find, DC
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > >> >> >> > and
> > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > >> >> >> > them
> > > >> >> >> > for you.
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Phil
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > >> >> >> > > > > > > > > > in
> > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > >> >> >> > replace both
> > > >> >> >> > > > > > > > > > of course.
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > DC
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > >> >> >> > > > > > > > > > > that
> > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > >> >> >> > > > > > > > > > > supply
> > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > >> >> >> > (unfortunately,
> > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > >> >> >> > > > > > > > > > > isolation!)
> > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > >> >> >> > > > > > > > > > > manuals
> > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > >> >> >> > > > > > > > > > > pointers
> > > >> >> >> > form
> > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > >> >> >> > > > > > > > > > > dead
> > > >> >> >> > diagnosis.
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > >> >> >> > > > > > > > > > > 1530
> > > >> >> >> > > > > > > > > > > will
> > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > >> >> >> > > > > > > > > > > DC
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > >
> > > >> >> >> > >
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > >> >> >> that
> > > >> >> >> can be easily had to run say serial (probably ppp) from something
> > > >> >> >> like
> > > >> >> >> a
> > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > >> >> >> and a
> > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > >> >> >> networking
> > > >> >> >> I forget.
> > > >> >> >>
> > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > >> >> >> equation,
> > > >> >> >> but I don' t have any references right now over a dos stack.
> > > >> >> >>
> > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > >> >> >> better,
> > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > >> >> >>
> > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > >> >> >> I'm
> > > >> >> >> asking for everything here.  Objective is to have something that
> > > >> >> >> could
> > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > >> >> >> a
> > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > >> >> >>
> > > >> >> >> jim
> > > >> >> >> >
> > > >> >> >> > ,___
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > ------------------------------------
> > > >> >> >
> > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >>
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> > ------------------------------------
> > > >> >
> > > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >
> > > >> >
> > > >> >
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >
> > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2568
Date: Wed, 17 Oct 2012 10:50:30 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

I haven't looked at his stuff in a while, but have you ever played with Phil 
Karn's NOS package?  Commonly referred to by his callsign, KA9Q.  It's a 
TCP/IP package that lets you play with Internet type stuff.  Really geeky, 
but it does work.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "techtalklive@..." <doug@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Tuesday, October 16, 2012 2:25 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


>I used to have all that stuff.  Today I think I can run a dos program on 
>the GRiD that talks to my trusty TotalCommander on another PC.
> As I might have mentioned in another post, if I could get
> another PC to appear as a mounted drive to the GRiD I'd be in
> real fat city.  Then I'd have the machine wide open to the rest of the 
> world.
> Any ideas there?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> Good luck with the Backpack stuff.
>>
>> There's a book called "Hot Links", which was produced by the same people
>> that produced LapLink.  In the back of the book is a disk with programs 
>> that
>> will let you transfer files, either via null modem cable or LapLink 
>> cable.
>> I doubt that the book is still in print, but it might be something to 
>> look
>> for.  If you get the book without the disk, let me know, and I'll get you
>> the software.  I can't remember if it lets you map the host drive to the
>> client machine, but that would be cool, if it does that.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message ----- 
>> From: "techtalklive@..." <doug@...>
>> To: <RuGRiD-Laptop@yahoogroups.com>
>> Sent: Monday, October 15, 2012 10:47 PM
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>> > Its a 1530... clock is... I dont know 20Mhz?
>> > Yes checking out Backpacks now. Just collected drivers from
>> > around the web for them and am checking on ebay for
>> > equipment.  I suspect they will work.
>> >
>> > I thought I might take a look to see if there was parallel port
>> > software that would work like "laplink" to tether to another PC
>> > but would make a directory/drive on the the host PC appear as a drive 
>> > to
>> > the 1530.
>> >
>> > That would be cool... and avoid purchasing old hardware.
>> >
>> >
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
>> >>
>> >> What's the bus clock of the 1520, for example?  If it's 10MHz, it 
>> >> *might*
>> >> make it, but it would be breathing hard.  As for parallel drives, see 
>> >> if
>> >> you
>> >> can find any of the Backpack stuff.  I have a CD-ROM drive that works 
>> >> off
>> >> the parallel port, but I haven't tried it on the GRiD yet.
>> >>
>> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> "She said it was either her or the ham radio.  Over."
>> >>
>> >>
>> >> ----- Original Message ----- 
>> >> From: "techtalklive@" <doug@>
>> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> Sent: Sunday, October 14, 2012 7:48 PM
>> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >>
>> >>
>> >> >
>> >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
>> >> > driver
>> >> > support.
>> >> > Other similar devices don't seem to be on the used market right not.
>> >> > I'm also considering a parallel based disk drive at this point.
>> >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
>> >> > didn't
>> >> > actually run the numbers.
>> >> > DC
>> >> >
>> >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> 
>> >> > wrote:
>> >> >>
>> >> >> I don't think I'd even bother with the serial port.  You might get
>> >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
>> >> >> 16550AFN
>> >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, 
>> >> >> you
>> >> >> have
>> >> >> to slow it down with CTS/RTS handshaking.  I think the standard
>> >> >> parallel
>> >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
>> >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, 
>> >> >> but
>> >> >> even
>> >> >> if you could directly tie in to the ISA bus, it would be tough.
>> >> >>
>> >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> >> "She said it was either her or the ham radio.  Over."
>> >> >>
>> >> >>
>> >> >> ----- Original Message ----- 
>> >> >> From: "Androgenoide" <androgenoide@>
>> >> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> >> Sent: Friday, October 12, 2012 3:37 PM
>> >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >> >>
>> >> >>
>> >> >> > The only real obstacle to DOS networking with the Grid is finding 
>> >> >> > an
>> >> >> > Ethernet adapter that will work through either the serial or
>> >> >> > parallel
>> >> >> > ports.   I used the Xircom on the parallel port because I had one 
>> >> >> > at
>> >> >> > the
>> >> >> > time.   I've got a serial device server now that would probably 
>> >> >> > work
>> >> >> > too
>> >> >> > but I've got too much going on at the moment to dig out a Grid 
>> >> >> > just
>> >> >> > to
>> >> >> > see
>> >> >> > what would be required.   Either of those solutions would be 
>> >> >> > limited
>> >> >> > by
>> >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
>> >> >> > speeds
>> >> >> > are out of the question!
>> >> >> > Another thought... The guy who put together the Techworm boot 
>> >> >> > disk
>> >> >> > also
>> >> >> > had one called Networm, a single floppy that could do a dialup
>> >> >> > internet
>> >> >> > connection... (if you still have access to a dialup service... if
>> >> >> > not,
>> >> >> > Budget Dial Up has a prepaid service that allows you to buy just 
>> >> >> > a
>> >> >> > few
>> >> >> > hours at a time).
>> >> >> >
>> >> >> > Generally speaking, if an old machine has either a serial or
>> >> >> > parallel
>> >> >> > port
>> >> >> > and you can get it to boot into DOS, there is always a way to
>> >> >> > transfer
>> >> >> > files to another machine.   Even if it has no floppy you can use
>> >> >> > another
>> >> >> > DOS machine running Laplink.  If it does have a floppy there are 
>> >> >> > a
>> >> >> > lot
>> >> >> > of
>> >> >> > file transfer programs out there, from Kermit to the original
>> >> >> > version
>> >> >> > of
>> >> >> > Procomm that will fit on a single floppy.
>> >> >> >
>> >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
>> >> >> > full
>> >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
>> >> >> > tricky
>> >> >> > and
>> >> >> > would require some hardware tweaks even to make a slow machine...
>> >> >> > kind
>> >> >> > of
>> >> >> > an extreme project.   I've heard of a Linux distro that will fit 
>> >> >> > on
>> >> >> > a
>> >> >> > single floppy and run on systems with limited resources
>> >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even 
>> >> >> > that
>> >> >> > one
>> >> >> > seems to want 4MB of RAM.
>> >> >> >
>> >> >> > There are plenty of people on the web who have too much time on
>> >> >> > their
>> >> >> > hands and are still playing with machines even older than the
>> >> >> > Grid...
>> >> >> > You
>> >> >> > can still buy new after-market accessories for Commodores, for
>> >> >> > example,
>> >> >> > so
>> >> >> > don't assume that there are no new solutions to old problems.
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
>> >> >> >>
>> >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >> >> >> >
>> >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
>> >> >> >> > port
>> >> >> >> > to
>> >> >> >> > a NIC... although I've been wondering lately if it might not 
>> >> >> >> > have
>> >> >> >> > made
>> >> >> >> > equally good sense to use a device server on the serial 
>> >> >> >> > port...?
>> >> >> >> > And,
>> >> >> >> > of course, the Arachne browser... not many choices for a DOS
>> >> >> >> > browser
>> >> >> >> > are there? I used it to check my Yahoo web mail and I'll have 
>> >> >> >> > to
>> >> >> >> > say
>> >> >> >> > that it gave a whole new dimension of meaning to the word 
>> >> >> >> > "slow."
>> >> >> >> > Go
>> >> >> >> > ahead, make a pot of tea while it's loading that page, it will 
>> >> >> >> > be
>> >> >> >> > a
>> >> >> >> > while.
>> >> >> >> >
>> >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web 
>> >> >> >> > page
>> >> >> >> > last
>> >> >> >> > week of a guy who was competing with a friend to see who could
>> >> >> >> > force
>> >> >> >> > Windows XP to run with the least resources. It won't install
>> >> >> >> > unless
>> >> >> >> > it
>> >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
>> >> >> >> > installed
>> >> >> >> > you can remove RAM and underclock the machine... He said he 
>> >> >> >> > got
>> >> >> >> > one
>> >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took 
>> >> >> >> > a
>> >> >> >> > half
>> >> >> >> > hour to boot.
>> >> >> >> >
>> >> >> >> > I scored an HP 95LX a while back and someday, when I have 
>> >> >> >> > nothing
>> >> >> >> > else
>> >> >> >> > to do (Hah!) it might be interesting to see if I can get 
>> >> >> >> > online
>> >> >> >> > with
>> >> >> >> > a
>> >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
>> >> >> >> > OS/browser
>> >> >> >> > could be ported to a 95LX?)... or maybe not...
>> >> >> >> >
>> >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
>> >> >> >> > <doug@> wrote:
>> >> >> >> > >
>> >> >> >> > > Like the hack job? :O
>> >> >> >> > >
>> >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
>> >> >> >> > > screes?
>> >> >> >> > > Should I take the kbd apart and clean it (will that likely
>> >> >> >> > > fix it?) or look for a replacement?
>> >> >> >> > >
>> >> >> >> > > So what can I do with this thing if I put more mem in it?
>> >> >> >> > > Its all accessed funky through expaned mem methods, isn't 
>> >> >> >> > > it?
>> >> >> >> > > I have a coprocessor I could put in this but not sure of
>> >> >> >> > > the point there.
>> >> >> >> > >
>> >> >> >> > > I think I might like to accomplish getting it on the web.
>> >> >> >> > > I'd need the LAN hardware I guess.
>> >> >> >> > > Any other ideas?
>> >> >> >> > >
>> >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
>> >> >> >> > > it that mate inside the cavity. But one of the two spring
>> >> >> >> > > contacts
>> >> >> >> > > inside is "rubberized", so only the one contact hits metal 
>> >> >> >> > > to
>> >> >> >> > > metal.
>> >> >> >> > > So the P.S. only works using the cord to go from the P.S. 
>> >> >> >> > > into
>> >> >> >> > > the
>> >> >> >> > > radial DC jack. Strange?
>> >> >> >> > >
>> >> >> >> > > DC
>> >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> >> >> >> > <Jeriddian@>
>> >> >> >> > wrote:
>> >> >> >> > > >
>> >> >> >> > > > Great job, Doug!
>> >> >> >> > > >
>> >> >> >> > > > Isn't it nice when you manage to salvage one of these
>> >> >> >> > > > beautiful
>> >> >> >> > machines? And yep, that's the way it works.
>> >> >> >> > > >
>> >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
>> >> >> >> > > > registers
>> >> >> >> > are again active. It's just that they're filled with nonsense, 
>> >> >> >> > so
>> >> >> >> > the
>> >> >> >> > computer tells you the clock had stopped (which it did), and
>> >> >> >> > simply
>> >> >> >> > prompts you to reset the time. Once you do that and reboot,
>> >> >> >> > everything's hunky-dory.
>> >> >> >> > > >
>> >> >> >> > > > You can probably find some more 256K sticks somewhere and
>> >> >> >> > > > upgrade
>> >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
>> >> >> >> > Great
>> >> >> >> > to
>> >> >> >> > hear the HDD is good too.
>> >> >> >> > > >
>> >> >> >> > > > I recently got a great deal. There was a 1520 on sale on 
>> >> >> >> > > > ebay
>> >> >> >> > > > that
>> >> >> >> > I looked at, however it was strange. It was definitely branded 
>> >> >> >> > a
>> >> >> >> > 1520,
>> >> >> >> > and advertised that way, but the flip up screen said it was a 
>> >> >> >> > 386
>> >> >> >> > machine. I decided to get it, and it was only about $90 with
>> >> >> >> > shipping.
>> >> >> >> > When I got the machine, I was very excited when it began to 
>> >> >> >> > post,
>> >> >> >> > because I got a full 8MB of RAM! It of course displayed the
>> >> >> >> > configuration error 02 indicating the CMOS battery was dead. 
>> >> >> >> > So I
>> >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
>> >> >> >> > that
>> >> >> >> > was
>> >> >> >> > no big deal. I decided to replace the DS1287A as I had a 
>> >> >> >> > spare.
>> >> >> >> > Imagine my surprise and joy when I took the keyboard off to
>> >> >> >> > discover
>> >> >> >> > that not only was this really a 386 machine (a 1530), but it 
>> >> >> >> > also
>> >> >> >> > had
>> >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A 
>> >> >> >> > and
>> >> >> >> > this
>> >> >> >> > solved the configuration error just fine. But alas, I didn't 
>> >> >> >> > get
>> >> >> >> > a
>> >> >> >> > triple crown winner here. The Conner drive was definitely 
>> >> >> >> > dead.
>> >> >> >> > But
>> >> >> >> > heck, getting another HDD is easy compared to the other 
>> >> >> >> > benefits!
>> >> >> >> > The
>> >> >> >> > original owner of this machine definitely took care of it.
>> >> >> >> > > >
>> >> >> >> > > > Phil
>> >> >> >> > > >
>> >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > >
>> >> >> >> > > > > It runs! Hard Disk is GOOD.
>> >> >> >> > > > > I did a DS1287 hack to the machine today and ran the 
>> >> >> >> > > > > wires
>> >> >> >> > > > > to
>> >> >> >> > > > > a
>> >> >> >> > convenient place for the battery. Upon power up it said
>> >> >> >> > > > > that the RTC was stopped, and it needed setting.
>> >> >> >> > > > > The "stopped" message threw me, I thought something was
>> >> >> >> > > > > wrong
>> >> >> >> > > > > with
>> >> >> >> > > > > the chip. It took an F1 to continue and went right 
>> >> >> >> > > > > through
>> >> >> >> > > > > POST
>> >> >> >> > and Autoexec.
>> >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the 
>> >> >> >> > > > > RTC.
>> >> >> >> > > > > Now it boots cleanly.
>> >> >> >> > > > > Has Lotus123 on the HD.
>> >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
>> >> >> >> > > > > The only remaining issue is that a few keys on the 
>> >> >> >> > > > > keyboard
>> >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
>> >> >> >> > > > > everything
>> >> >> >> > > > > works.
>> >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 
>> >> >> >> > > > > 1MB
>> >> >> >> > > > > RAM,
>> >> >> >> > > > > a
>> >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
>> >> >> >> > > > >
>> >> >> >> > > > >
>> >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > >
>> >> >> >> > > > > > Thanks so much that was great info. I had no idea on 
>> >> >> >> > > > > > the
>> >> >> >> > > > > > X2
>> >> >> >> > > > > > being a rating. May have to try it without them just 
>> >> >> >> > > > > > to
>> >> >> >> > > > > > make sure the rest of it is still good.
>> >> >> >> > > > > >
>> >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
>> >> >> >> > <andrebakken@> wrote:
>> >> >> >> > > > > > >
>> >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
>> >> >> >> > > > > > > difference.
>> >> >> >> > The X2 also signifies they're an enhanced type meant to go
>> >> >> >> > directly
>> >> >> >> > across the mains. Be sure to get X2 rated replacements.
>> >> >> >> > > > > > > The PSU will work without those cap's in place, but
>> >> >> >> > > > > > > will
>> >> >> >> > radiate more interference/noise out onto the mains.
>> >> >> >> > > > > > >
>> >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > > There are two in there that are the same.
>> >> >> >> > > > > > > > .15uF 250V I think I can replace them.
>> >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
>> >> >> >> > > > > > > > The bottom is clear so you can see the radial 
>> >> >> >> > > > > > > > shape.
>> >> >> >> > > > > > > > I have them out already.
>> >> >> >> > > > > > > > Thanks for the tip on the 1287A
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > > DC
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> >> >> >> > <Jeriddian@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > Good Find, DC
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > I guess they got burnt to the point where you 
>> >> >> >> > > > > > > > > can't
>> >> >> >> > identify the capcity amount. Could you give me the output 
>> >> >> >> > voltage
>> >> >> >> > and
>> >> >> >> > amperage? I'll look through my units and see if I can identify
>> >> >> >> > them
>> >> >> >> > for you.
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > Phil
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > > > I posted pictures of what looks like a failed 
>> >> >> >> > > > > > > > > > cap
>> >> >> >> > > > > > > > > > in
>> >> >> >> > the ext p.s. unit. A stinky melt down!
>> >> >> >> > > > > > > > > > I'm supposing I can replace these.
>> >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
>> >> >> >> > > > > > > > > > There appears to be two of the same caps, 
>> >> >> >> > > > > > > > > > would
>> >> >> >> > replace both
>> >> >> >> > > > > > > > > > of course.
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > > > DC
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > > > I am considering tackling the repair of a 
>> >> >> >> > > > > > > > > > > 1530
>> >> >> >> > > > > > > > > > > that
>> >> >> >> > > > > > > > > > > does not respond to the power switch. The 
>> >> >> >> > > > > > > > > > > power
>> >> >> >> > > > > > > > > > > supply
>> >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
>> >> >> >> > (unfortunately,
>> >> >> >> > > > > > > > > > > that would have been an easy problem
>> >> >> >> > > > > > > > > > > isolation!)
>> >> >> >> > > > > > > > > > > So its something internal. I have the 
>> >> >> >> > > > > > > > > > > service
>> >> >> >> > > > > > > > > > > manuals
>> >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
>> >> >> >> > > > > > > > > > > pointers
>> >> >> >> > form
>> >> >> >> > > > > > > > > > > folks who have already performed cold stone
>> >> >> >> > > > > > > > > > > dead
>> >> >> >> > diagnosis.
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > > > If I don't dive into this FYI this very 
>> >> >> >> > > > > > > > > > > clean
>> >> >> >> > > > > > > > > > > 1530
>> >> >> >> > > > > > > > > > > will
>> >> >> >> > > > > > > > > > > be available for parts/repair!
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > > > Thanks in advance,
>> >> >> >> > > > > > > > > > > DC
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > >
>> >> >> >> > > > > >
>> >> >> >> > > > >
>> >> >> >> > > >
>> >> >> >> > >
>> >> >> >> >
>> >> >> >>
>> >> >> >> Since we are on the topic of TCP does anyone have a formula 
>> >> >> >> stashed
>> >> >> >> that
>> >> >> >> can be easily had to run say serial (probably ppp) from 
>> >> >> >> something
>> >> >> >> like
>> >> >> >> a
>> >> >> >> small system like the raspberry pi serially to a system with dos
>> >> >> >> and a
>> >> >> >> stack?  It's been so long since I messed with dos environment
>> >> >> >> networking
>> >> >> >> I forget.
>> >> >> >>
>> >> >> >> I think windows of some sort had trumpet to handle part of the
>> >> >> >> equation,
>> >> >> >> but I don' t have any references right now over a dos stack.
>> >> >> >>
>> >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
>> >> >> >> better,
>> >> >> >> but I don't know if the hardware here would be up to those os's.
>> >> >> >>
>> >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
>> >> >> >> I'm
>> >> >> >> asking for everything here.  Objective is to have something that
>> >> >> >> could
>> >> >> >> suck off or load a disk image with a floppy boot.  I suspect it 
>> >> >> >> was
>> >> >> >> a
>> >> >> >> difficult thing to get going in the day, though, and even wors 
>> >> >> >> now.
>> >> >> >>
>> >> >> >> jim
>> >> >> >> >
>> >> >> >> > ,___
>> >> >> >> >
>> >> >> >>
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > ------------------------------------
>> >> >> >
>> >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > ------------------------------------
>> >> >
>> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2569
Date: Wed, 17 Oct 2012 10:51:04 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Oops...forgot to give you the link:

http://www.ka9q.net/code/ka9qnos/

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "techtalklive@..." <doug@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Tuesday, October 16, 2012 2:25 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


>I used to have all that stuff.  Today I think I can run a dos program on 
>the GRiD that talks to my trusty TotalCommander on another PC.
> As I might have mentioned in another post, if I could get
> another PC to appear as a mounted drive to the GRiD I'd be in
> real fat city.  Then I'd have the machine wide open to the rest of the 
> world.
> Any ideas there?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> Good luck with the Backpack stuff.
>>
>> There's a book called "Hot Links", which was produced by the same people
>> that produced LapLink.  In the back of the book is a disk with programs 
>> that
>> will let you transfer files, either via null modem cable or LapLink 
>> cable.
>> I doubt that the book is still in print, but it might be something to 
>> look
>> for.  If you get the book without the disk, let me know, and I'll get you
>> the software.  I can't remember if it lets you map the host drive to the
>> client machine, but that would be cool, if it does that.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message ----- 
>> From: "techtalklive@..." <doug@...>
>> To: <RuGRiD-Laptop@yahoogroups.com>
>> Sent: Monday, October 15, 2012 10:47 PM
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>> > Its a 1530... clock is... I dont know 20Mhz?
>> > Yes checking out Backpacks now. Just collected drivers from
>> > around the web for them and am checking on ebay for
>> > equipment.  I suspect they will work.
>> >
>> > I thought I might take a look to see if there was parallel port
>> > software that would work like "laplink" to tether to another PC
>> > but would make a directory/drive on the the host PC appear as a drive 
>> > to
>> > the 1530.
>> >
>> > That would be cool... and avoid purchasing old hardware.
>> >
>> >
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
>> >>
>> >> What's the bus clock of the 1520, for example?  If it's 10MHz, it 
>> >> *might*
>> >> make it, but it would be breathing hard.  As for parallel drives, see 
>> >> if
>> >> you
>> >> can find any of the Backpack stuff.  I have a CD-ROM drive that works 
>> >> off
>> >> the parallel port, but I haven't tried it on the GRiD yet.
>> >>
>> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> "She said it was either her or the ham radio.  Over."
>> >>
>> >>
>> >> ----- Original Message ----- 
>> >> From: "techtalklive@" <doug@>
>> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> Sent: Sunday, October 14, 2012 7:48 PM
>> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >>
>> >>
>> >> >
>> >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
>> >> > driver
>> >> > support.
>> >> > Other similar devices don't seem to be on the used market right not.
>> >> > I'm also considering a parallel based disk drive at this point.
>> >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
>> >> > didn't
>> >> > actually run the numbers.
>> >> > DC
>> >> >
>> >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> 
>> >> > wrote:
>> >> >>
>> >> >> I don't think I'd even bother with the serial port.  You might get
>> >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
>> >> >> 16550AFN
>> >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, 
>> >> >> you
>> >> >> have
>> >> >> to slow it down with CTS/RTS handshaking.  I think the standard
>> >> >> parallel
>> >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
>> >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, 
>> >> >> but
>> >> >> even
>> >> >> if you could directly tie in to the ISA bus, it would be tough.
>> >> >>
>> >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> >> "She said it was either her or the ham radio.  Over."
>> >> >>
>> >> >>
>> >> >> ----- Original Message ----- 
>> >> >> From: "Androgenoide" <androgenoide@>
>> >> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> >> Sent: Friday, October 12, 2012 3:37 PM
>> >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >> >>
>> >> >>
>> >> >> > The only real obstacle to DOS networking with the Grid is finding 
>> >> >> > an
>> >> >> > Ethernet adapter that will work through either the serial or
>> >> >> > parallel
>> >> >> > ports.   I used the Xircom on the parallel port because I had one 
>> >> >> > at
>> >> >> > the
>> >> >> > time.   I've got a serial device server now that would probably 
>> >> >> > work
>> >> >> > too
>> >> >> > but I've got too much going on at the moment to dig out a Grid 
>> >> >> > just
>> >> >> > to
>> >> >> > see
>> >> >> > what would be required.   Either of those solutions would be 
>> >> >> > limited
>> >> >> > by
>> >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
>> >> >> > speeds
>> >> >> > are out of the question!
>> >> >> > Another thought... The guy who put together the Techworm boot 
>> >> >> > disk
>> >> >> > also
>> >> >> > had one called Networm, a single floppy that could do a dialup
>> >> >> > internet
>> >> >> > connection... (if you still have access to a dialup service... if
>> >> >> > not,
>> >> >> > Budget Dial Up has a prepaid service that allows you to buy just 
>> >> >> > a
>> >> >> > few
>> >> >> > hours at a time).
>> >> >> >
>> >> >> > Generally speaking, if an old machine has either a serial or
>> >> >> > parallel
>> >> >> > port
>> >> >> > and you can get it to boot into DOS, there is always a way to
>> >> >> > transfer
>> >> >> > files to another machine.   Even if it has no floppy you can use
>> >> >> > another
>> >> >> > DOS machine running Laplink.  If it does have a floppy there are 
>> >> >> > a
>> >> >> > lot
>> >> >> > of
>> >> >> > file transfer programs out there, from Kermit to the original
>> >> >> > version
>> >> >> > of
>> >> >> > Procomm that will fit on a single floppy.
>> >> >> >
>> >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
>> >> >> > full
>> >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
>> >> >> > tricky
>> >> >> > and
>> >> >> > would require some hardware tweaks even to make a slow machine...
>> >> >> > kind
>> >> >> > of
>> >> >> > an extreme project.   I've heard of a Linux distro that will fit 
>> >> >> > on
>> >> >> > a
>> >> >> > single floppy and run on systems with limited resources
>> >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even 
>> >> >> > that
>> >> >> > one
>> >> >> > seems to want 4MB of RAM.
>> >> >> >
>> >> >> > There are plenty of people on the web who have too much time on
>> >> >> > their
>> >> >> > hands and are still playing with machines even older than the
>> >> >> > Grid...
>> >> >> > You
>> >> >> > can still buy new after-market accessories for Commodores, for
>> >> >> > example,
>> >> >> > so
>> >> >> > don't assume that there are no new solutions to old problems.
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
>> >> >> >>
>> >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >> >> >> >
>> >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
>> >> >> >> > port
>> >> >> >> > to
>> >> >> >> > a NIC... although I've been wondering lately if it might not 
>> >> >> >> > have
>> >> >> >> > made
>> >> >> >> > equally good sense to use a device server on the serial 
>> >> >> >> > port...?
>> >> >> >> > And,
>> >> >> >> > of course, the Arachne browser... not many choices for a DOS
>> >> >> >> > browser
>> >> >> >> > are there? I used it to check my Yahoo web mail and I'll have 
>> >> >> >> > to
>> >> >> >> > say
>> >> >> >> > that it gave a whole new dimension of meaning to the word 
>> >> >> >> > "slow."
>> >> >> >> > Go
>> >> >> >> > ahead, make a pot of tea while it's loading that page, it will 
>> >> >> >> > be
>> >> >> >> > a
>> >> >> >> > while.
>> >> >> >> >
>> >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web 
>> >> >> >> > page
>> >> >> >> > last
>> >> >> >> > week of a guy who was competing with a friend to see who could
>> >> >> >> > force
>> >> >> >> > Windows XP to run with the least resources. It won't install
>> >> >> >> > unless
>> >> >> >> > it
>> >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
>> >> >> >> > installed
>> >> >> >> > you can remove RAM and underclock the machine... He said he 
>> >> >> >> > got
>> >> >> >> > one
>> >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took 
>> >> >> >> > a
>> >> >> >> > half
>> >> >> >> > hour to boot.
>> >> >> >> >
>> >> >> >> > I scored an HP 95LX a while back and someday, when I have 
>> >> >> >> > nothing
>> >> >> >> > else
>> >> >> >> > to do (Hah!) it might be interesting to see if I can get 
>> >> >> >> > online
>> >> >> >> > with
>> >> >> >> > a
>> >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
>> >> >> >> > OS/browser
>> >> >> >> > could be ported to a 95LX?)... or maybe not...
>> >> >> >> >
>> >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
>> >> >> >> > <doug@> wrote:
>> >> >> >> > >
>> >> >> >> > > Like the hack job? :O
>> >> >> >> > >
>> >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
>> >> >> >> > > screes?
>> >> >> >> > > Should I take the kbd apart and clean it (will that likely
>> >> >> >> > > fix it?) or look for a replacement?
>> >> >> >> > >
>> >> >> >> > > So what can I do with this thing if I put more mem in it?
>> >> >> >> > > Its all accessed funky through expaned mem methods, isn't 
>> >> >> >> > > it?
>> >> >> >> > > I have a coprocessor I could put in this but not sure of
>> >> >> >> > > the point there.
>> >> >> >> > >
>> >> >> >> > > I think I might like to accomplish getting it on the web.
>> >> >> >> > > I'd need the LAN hardware I guess.
>> >> >> >> > > Any other ideas?
>> >> >> >> > >
>> >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
>> >> >> >> > > it that mate inside the cavity. But one of the two spring
>> >> >> >> > > contacts
>> >> >> >> > > inside is "rubberized", so only the one contact hits metal 
>> >> >> >> > > to
>> >> >> >> > > metal.
>> >> >> >> > > So the P.S. only works using the cord to go from the P.S. 
>> >> >> >> > > into
>> >> >> >> > > the
>> >> >> >> > > radial DC jack. Strange?
>> >> >> >> > >
>> >> >> >> > > DC
>> >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> >> >> >> > <Jeriddian@>
>> >> >> >> > wrote:
>> >> >> >> > > >
>> >> >> >> > > > Great job, Doug!
>> >> >> >> > > >
>> >> >> >> > > > Isn't it nice when you manage to salvage one of these
>> >> >> >> > > > beautiful
>> >> >> >> > machines? And yep, that's the way it works.
>> >> >> >> > > >
>> >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
>> >> >> >> > > > registers
>> >> >> >> > are again active. It's just that they're filled with nonsense, 
>> >> >> >> > so
>> >> >> >> > the
>> >> >> >> > computer tells you the clock had stopped (which it did), and
>> >> >> >> > simply
>> >> >> >> > prompts you to reset the time. Once you do that and reboot,
>> >> >> >> > everything's hunky-dory.
>> >> >> >> > > >
>> >> >> >> > > > You can probably find some more 256K sticks somewhere and
>> >> >> >> > > > upgrade
>> >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
>> >> >> >> > Great
>> >> >> >> > to
>> >> >> >> > hear the HDD is good too.
>> >> >> >> > > >
>> >> >> >> > > > I recently got a great deal. There was a 1520 on sale on 
>> >> >> >> > > > ebay
>> >> >> >> > > > that
>> >> >> >> > I looked at, however it was strange. It was definitely branded 
>> >> >> >> > a
>> >> >> >> > 1520,
>> >> >> >> > and advertised that way, but the flip up screen said it was a 
>> >> >> >> > 386
>> >> >> >> > machine. I decided to get it, and it was only about $90 with
>> >> >> >> > shipping.
>> >> >> >> > When I got the machine, I was very excited when it began to 
>> >> >> >> > post,
>> >> >> >> > because I got a full 8MB of RAM! It of course displayed the
>> >> >> >> > configuration error 02 indicating the CMOS battery was dead. 
>> >> >> >> > So I
>> >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
>> >> >> >> > that
>> >> >> >> > was
>> >> >> >> > no big deal. I decided to replace the DS1287A as I had a 
>> >> >> >> > spare.
>> >> >> >> > Imagine my surprise and joy when I took the keyboard off to
>> >> >> >> > discover
>> >> >> >> > that not only was this really a 386 machine (a 1530), but it 
>> >> >> >> > also
>> >> >> >> > had
>> >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A 
>> >> >> >> > and
>> >> >> >> > this
>> >> >> >> > solved the configuration error just fine. But alas, I didn't 
>> >> >> >> > get
>> >> >> >> > a
>> >> >> >> > triple crown winner here. The Conner drive was definitely 
>> >> >> >> > dead.
>> >> >> >> > But
>> >> >> >> > heck, getting another HDD is easy compared to the other 
>> >> >> >> > benefits!
>> >> >> >> > The
>> >> >> >> > original owner of this machine definitely took care of it.
>> >> >> >> > > >
>> >> >> >> > > > Phil
>> >> >> >> > > >
>> >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > >
>> >> >> >> > > > > It runs! Hard Disk is GOOD.
>> >> >> >> > > > > I did a DS1287 hack to the machine today and ran the 
>> >> >> >> > > > > wires
>> >> >> >> > > > > to
>> >> >> >> > > > > a
>> >> >> >> > convenient place for the battery. Upon power up it said
>> >> >> >> > > > > that the RTC was stopped, and it needed setting.
>> >> >> >> > > > > The "stopped" message threw me, I thought something was
>> >> >> >> > > > > wrong
>> >> >> >> > > > > with
>> >> >> >> > > > > the chip. It took an F1 to continue and went right 
>> >> >> >> > > > > through
>> >> >> >> > > > > POST
>> >> >> >> > and Autoexec.
>> >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the 
>> >> >> >> > > > > RTC.
>> >> >> >> > > > > Now it boots cleanly.
>> >> >> >> > > > > Has Lotus123 on the HD.
>> >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
>> >> >> >> > > > > The only remaining issue is that a few keys on the 
>> >> >> >> > > > > keyboard
>> >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
>> >> >> >> > > > > everything
>> >> >> >> > > > > works.
>> >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 
>> >> >> >> > > > > 1MB
>> >> >> >> > > > > RAM,
>> >> >> >> > > > > a
>> >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
>> >> >> >> > > > >
>> >> >> >> > > > >
>> >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > >
>> >> >> >> > > > > > Thanks so much that was great info. I had no idea on 
>> >> >> >> > > > > > the
>> >> >> >> > > > > > X2
>> >> >> >> > > > > > being a rating. May have to try it without them just 
>> >> >> >> > > > > > to
>> >> >> >> > > > > > make sure the rest of it is still good.
>> >> >> >> > > > > >
>> >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
>> >> >> >> > <andrebakken@> wrote:
>> >> >> >> > > > > > >
>> >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
>> >> >> >> > > > > > > difference.
>> >> >> >> > The X2 also signifies they're an enhanced type meant to go
>> >> >> >> > directly
>> >> >> >> > across the mains. Be sure to get X2 rated replacements.
>> >> >> >> > > > > > > The PSU will work without those cap's in place, but
>> >> >> >> > > > > > > will
>> >> >> >> > radiate more interference/noise out onto the mains.
>> >> >> >> > > > > > >
>> >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > > There are two in there that are the same.
>> >> >> >> > > > > > > > .15uF 250V I think I can replace them.
>> >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
>> >> >> >> > > > > > > > The bottom is clear so you can see the radial 
>> >> >> >> > > > > > > > shape.
>> >> >> >> > > > > > > > I have them out already.
>> >> >> >> > > > > > > > Thanks for the tip on the 1287A
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > > DC
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> >> >> >> > <Jeriddian@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > Good Find, DC
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > I guess they got burnt to the point where you 
>> >> >> >> > > > > > > > > can't
>> >> >> >> > identify the capcity amount. Could you give me the output 
>> >> >> >> > voltage
>> >> >> >> > and
>> >> >> >> > amperage? I'll look through my units and see if I can identify
>> >> >> >> > them
>> >> >> >> > for you.
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > Phil
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > > > I posted pictures of what looks like a failed 
>> >> >> >> > > > > > > > > > cap
>> >> >> >> > > > > > > > > > in
>> >> >> >> > the ext p.s. unit. A stinky melt down!
>> >> >> >> > > > > > > > > > I'm supposing I can replace these.
>> >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
>> >> >> >> > > > > > > > > > There appears to be two of the same caps, 
>> >> >> >> > > > > > > > > > would
>> >> >> >> > replace both
>> >> >> >> > > > > > > > > > of course.
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > > > DC
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" 
>> >> >> >> > <doug@>
>> >> >> >> > wrote:
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > > > I am considering tackling the repair of a 
>> >> >> >> > > > > > > > > > > 1530
>> >> >> >> > > > > > > > > > > that
>> >> >> >> > > > > > > > > > > does not respond to the power switch. The 
>> >> >> >> > > > > > > > > > > power
>> >> >> >> > > > > > > > > > > supply
>> >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
>> >> >> >> > (unfortunately,
>> >> >> >> > > > > > > > > > > that would have been an easy problem
>> >> >> >> > > > > > > > > > > isolation!)
>> >> >> >> > > > > > > > > > > So its something internal. I have the 
>> >> >> >> > > > > > > > > > > service
>> >> >> >> > > > > > > > > > > manuals
>> >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
>> >> >> >> > > > > > > > > > > pointers
>> >> >> >> > form
>> >> >> >> > > > > > > > > > > folks who have already performed cold stone
>> >> >> >> > > > > > > > > > > dead
>> >> >> >> > diagnosis.
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > > > If I don't dive into this FYI this very 
>> >> >> >> > > > > > > > > > > clean
>> >> >> >> > > > > > > > > > > 1530
>> >> >> >> > > > > > > > > > > will
>> >> >> >> > > > > > > > > > > be available for parts/repair!
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > > > Thanks in advance,
>> >> >> >> > > > > > > > > > > DC
>> >> >> >> > > > > > > > > > >
>> >> >> >> > > > > > > > > >
>> >> >> >> > > > > > > > >
>> >> >> >> > > > > > > >
>> >> >> >> > > > > > >
>> >> >> >> > > > > >
>> >> >> >> > > > >
>> >> >> >> > > >
>> >> >> >> > >
>> >> >> >> >
>> >> >> >>
>> >> >> >> Since we are on the topic of TCP does anyone have a formula 
>> >> >> >> stashed
>> >> >> >> that
>> >> >> >> can be easily had to run say serial (probably ppp) from 
>> >> >> >> something
>> >> >> >> like
>> >> >> >> a
>> >> >> >> small system like the raspberry pi serially to a system with dos
>> >> >> >> and a
>> >> >> >> stack?  It's been so long since I messed with dos environment
>> >> >> >> networking
>> >> >> >> I forget.
>> >> >> >>
>> >> >> >> I think windows of some sort had trumpet to handle part of the
>> >> >> >> equation,
>> >> >> >> but I don' t have any references right now over a dos stack.
>> >> >> >>
>> >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
>> >> >> >> better,
>> >> >> >> but I don't know if the hardware here would be up to those os's.
>> >> >> >>
>> >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
>> >> >> >> I'm
>> >> >> >> asking for everything here.  Objective is to have something that
>> >> >> >> could
>> >> >> >> suck off or load a disk image with a floppy boot.  I suspect it 
>> >> >> >> was
>> >> >> >> a
>> >> >> >> difficult thing to get going in the day, though, and even wors 
>> >> >> >> now.
>> >> >> >>
>> >> >> >> jim
>> >> >> >> >
>> >> >> >> > ,___
>> >> >> >> >
>> >> >> >>
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > ------------------------------------
>> >> >> >
>> >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > ------------------------------------
>> >> >
>> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2570
Date: Wed, 17 Oct 2012 12:52:18 -0400
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=utf-8

IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.  Once I soldered the pins on, the module height would not allow the cover to go on.
Your results may vary,
-Shawn

-------- Original message --------
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
From: "techtalklive@ymail.com" <doug@crawfordltd.com>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


Well that sounds promising.  The only thing that would
top that would be a native SCSI attached to the bus connectors
in the accessory port.  A ParPort one would do in the meantime.
Thanks!

I'm thinking of moding some SIMM chips to go in the SIPP sockets.
Anyone know the mem speed?  Hate to take the thing apart right
now to find out.
Thanks!

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
> 
> The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
> 
> Phil
> 
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > As I might have mentioned in another post, if I could get 
> > another PC to appear as a mounted drive to the GRiD I'd be in
> > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > Any ideas there?
> > 
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >
> > > Good luck with the Backpack stuff.
> > > 
> > > There's a book called "Hot Links", which was produced by the same people 
> > > that produced LapLink.  In the back of the book is a disk with programs that 
> > > will let you transfer files, either via null modem cable or LapLink cable. 
> > > I doubt that the book is still in print, but it might be something to look 
> > > for.  If you get the book without the disk, let me know, and I'll get you 
> > > the software.  I can't remember if it lets you map the host drive to the 
> > > client machine, but that would be cool, if it does that.
> > > 
> > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > "She said it was either her or the ham radio.  Over."
> > > 
> > > 
> > > ----- Original Message ----- 
> > > From: "techtalklive@" <doug@>
> > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > Sent: Monday, October 15, 2012 10:47 PM
> > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > 
> > > 
> > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > Yes checking out Backpacks now. Just collected drivers from
> > > > around the web for them and am checking on ebay for
> > > > equipment.  I suspect they will work.
> > > >
> > > > I thought I might take a look to see if there was parallel port
> > > > software that would work like "laplink" to tether to another PC
> > > > but would make a directory/drive on the the host PC appear as a drive to 
> > > > the 1530.
> > > >
> > > > That would be cool... and avoid purchasing old hardware.
> > > >
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >>
> > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > >> make it, but it would be breathing hard.  As for parallel drives, see if 
> > > >> you
> > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > >>
> > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> "She said it was either her or the ham radio.  Over."
> > > >>
> > > >>
> > > >> ----- Original Message -----
> > > >> From: "techtalklive@" <doug@>
> > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >>
> > > >>
> > > >> >
> > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited 
> > > >> > driver
> > > >> > support.
> > > >> > Other similar devices don't seem to be on the used market right not.
> > > >> > I'm also considering a parallel based disk drive at this point.
> > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I 
> > > >> > didn't
> > > >> > actually run the numbers.
> > > >> > DC
> > > >> >
> > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >> >>
> > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > >> >> 16550AFN
> > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > >> >> have
> > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard 
> > > >> >> parallel
> > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > >> >> even
> > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > >> >>
> > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> >> "She said it was either her or the ham radio.  Over."
> > > >> >>
> > > >> >>
> > > >> >> ----- Original Message ----- 
> > > >> >> From: "Androgenoide" <androgenoide@>
> > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >> >>
> > > >> >>
> > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > >> >> > Ethernet adapter that will work through either the serial or 
> > > >> >> > parallel
> > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > >> >> > the
> > > >> >> > time.   I've got a serial device server now that would probably work
> > > >> >> > too
> > > >> >> > but I've got too much going on at the moment to dig out a Grid just 
> > > >> >> > to
> > > >> >> > see
> > > >> >> > what would be required.   Either of those solutions would be limited 
> > > >> >> > by
> > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit 
> > > >> >> > speeds
> > > >> >> > are out of the question!
> > > >> >> > Another thought... The guy who put together the Techworm boot disk 
> > > >> >> > also
> > > >> >> > had one called Networm, a single floppy that could do a dialup 
> > > >> >> > internet
> > > >> >> > connection... (if you still have access to a dialup service... if 
> > > >> >> > not,
> > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a 
> > > >> >> > few
> > > >> >> > hours at a time).
> > > >> >> >
> > > >> >> > Generally speaking, if an old machine has either a serial or 
> > > >> >> > parallel
> > > >> >> > port
> > > >> >> > and you can get it to boot into DOS, there is always a way to 
> > > >> >> > transfer
> > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > >> >> > another
> > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a 
> > > >> >> > lot
> > > >> >> > of
> > > >> >> > file transfer programs out there, from Kermit to the original 
> > > >> >> > version
> > > >> >> > of
> > > >> >> > Procomm that will fit on a single floppy.
> > > >> >> >
> > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a 
> > > >> >> > full
> > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be 
> > > >> >> > tricky
> > > >> >> > and
> > > >> >> > would require some hardware tweaks even to make a slow machine... 
> > > >> >> > kind
> > > >> >> > of
> > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on 
> > > >> >> > a
> > > >> >> > single floppy and run on systems with limited resources
> > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that 
> > > >> >> > one
> > > >> >> > seems to want 4MB of RAM.
> > > >> >> >
> > > >> >> > There are plenty of people on the web who have too much time on 
> > > >> >> > their
> > > >> >> > hands and are still playing with machines even older than the 
> > > >> >> > Grid...
> > > >> >> > You
> > > >> >> > can still buy new after-market accessories for Commodores, for 
> > > >> >> > example,
> > > >> >> > so
> > > >> >> > don't assume that there are no new solutions to old problems.
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > >> >> >>
> > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > >> >> >> >
> > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel 
> > > >> >> >> > port
> > > >> >> >> > to
> > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > >> >> >> > made
> > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > >> >> >> > And,
> > > >> >> >> > of course, the Arachne browser... not many choices for a DOS 
> > > >> >> >> > browser
> > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to 
> > > >> >> >> > say
> > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow." 
> > > >> >> >> > Go
> > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be 
> > > >> >> >> > a
> > > >> >> >> > while.
> > > >> >> >> >
> > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > >> >> >> > last
> > > >> >> >> > week of a guy who was competing with a friend to see who could 
> > > >> >> >> > force
> > > >> >> >> > Windows XP to run with the least resources. It won't install 
> > > >> >> >> > unless
> > > >> >> >> > it
> > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > >> >> >> > installed
> > > >> >> >> > you can remove RAM and underclock the machine... He said he got 
> > > >> >> >> > one
> > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > >> >> >> > half
> > > >> >> >> > hour to boot.
> > > >> >> >> >
> > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > >> >> >> > else
> > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online 
> > > >> >> >> > with
> > > >> >> >> > a
> > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > >> >> >> > OS/browser
> > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > >> >> >> >
> > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > >> >> >> > <doug@> wrote:
> > > >> >> >> > >
> > > >> >> >> > > Like the hack job? :O
> > > >> >> >> > >
> > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped 
> > > >> >> >> > > screes?
> > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > >> >> >> > > fix it?) or look for a replacement?
> > > >> >> >> > >
> > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > >> >> >> > > the point there.
> > > >> >> >> > >
> > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > >> >> >> > > I'd need the LAN hardware I guess.
> > > >> >> >> > > Any other ideas?
> > > >> >> >> > >
> > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > >> >> >> > > it that mate inside the cavity. But one of the two spring 
> > > >> >> >> > > contacts
> > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > >> >> >> > > metal.
> > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into 
> > > >> >> >> > > the
> > > >> >> >> > > radial DC jack. Strange?
> > > >> >> >> > >
> > > >> >> >> > > DC
> > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" 
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > >
> > > >> >> >> > > > Great job, Doug!
> > > >> >> >> > > >
> > > >> >> >> > > > Isn't it nice when you manage to salvage one of these 
> > > >> >> >> > > > beautiful
> > > >> >> >> > machines? And yep, that's the way it works.
> > > >> >> >> > > >
> > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS 
> > > >> >> >> > > > registers
> > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > >> >> >> > the
> > > >> >> >> > computer tells you the clock had stopped (which it did), and 
> > > >> >> >> > simply
> > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > >> >> >> > everything's hunky-dory.
> > > >> >> >> > > >
> > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > >> >> >> > > > upgrade
> > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. 
> > > >> >> >> > Great
> > > >> >> >> > to
> > > >> >> >> > hear the HDD is good too.
> > > >> >> >> > > >
> > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > >> >> >> > > > that
> > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > >> >> >> > 1520,
> > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > >> >> >> > shipping.
> > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but 
> > > >> >> >> > that
> > > >> >> >> > was
> > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to 
> > > >> >> >> > discover
> > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > >> >> >> > had
> > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > >> >> >> > this
> > > >> >> >> > solved the configuration error just fine. But alas, I didn't get 
> > > >> >> >> > a
> > > >> >> >> > triple crown winner here. The Conner drive was definitely dead. 
> > > >> >> >> > But
> > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > >> >> >> > The
> > > >> >> >> > original owner of this machine definitely took care of it.
> > > >> >> >> > > >
> > > >> >> >> > > > Phil
> > > >> >> >> > > >
> > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > >
> > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires 
> > > >> >> >> > > > > to
> > > >> >> >> > > > > a
> > > >> >> >> > convenient place for the battery. Upon power up it said
> > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > >> >> >> > > > > The "stopped" message threw me, I thought something was 
> > > >> >> >> > > > > wrong
> > > >> >> >> > > > > with
> > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > >> >> >> > > > > POST
> > > >> >> >> > and Autoexec.
> > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > >> >> >> > > > > Now it boots cleanly.
> > > >> >> >> > > > > Has Lotus123 on the HD.
> > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd 
> > > >> >> >> > > > > everything
> > > >> >> >> > > > > works.
> > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB 
> > > >> >> >> > > > > RAM,
> > > >> >> >> > > > > a
> > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > >> >> >> > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the 
> > > >> >> >> > > > > > X2
> > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > >> >> >> > > > > > make sure the rest of it is still good.
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > >> >> >> > <andrebakken@> wrote:
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > >> >> >> > > > > > > difference.
> > > >> >> >> > The X2 also signifies they're an enhanced type meant to go 
> > > >> >> >> > directly
> > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > >> >> >> > > > > > > The PSU will work without those cap's in place, but 
> > > >> >> >> > > > > > > will
> > > >> >> >> > radiate more interference/noise out onto the mains.
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > There are two in there that are the same.
> > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > >> >> >> > > > > > > > I have them out already.
> > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > DC
> > > >> >> >> > > > > ; > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" 
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Good Find, DC
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > >> >> >> > and
> > > >> >> >> > amperage? I'll look through my units and see if I can identify 
> > > >> >> >> > them
> > > >> >> >> > for you.
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Phil
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap 
> > > >> >> >> > > > > > > > > > in
> > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > >> >> >> > replace both
> > > >> >> >> > > > > > > > > > of course.
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > DC
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > >> >> >> > > > > > > > > > > that
> > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > >> >> >> > > > > > > > > > > supply
> > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > >> >> >> > (unfortunately,
> > > >> >> >> > > > > > > > > > > that would have been an easy problem 
> > > >> >> >> > > > > > > > > > > isolation!)
> > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > >> >> >> > > > > > > > > > > manuals
> > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > >> >> >> > > > > > > > > > > pointers
> > > >> >> >> > form
> > > >> >> >> > > > > > > > > > > folks who have already performed cold stone 
> > > >> >> >> > > > > > > > > > > dead
> > > >> >> >> > diagnosis.
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean 
> > > >> >> >> > > > > > > > > > > 1530
> > > >> >> >> > > > > > > > > > > will
> > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > >> >> >> > > > > > > > > > > DC
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > >
> > > >> >> >> > >
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > >> >> >> that
> > > >> >> >> can be easily had to run say serial (probably ppp) from something 
> > > >> >> >> like
> > > >> >> >> a
> > > >> >> >> small system like the raspberry pi serially to a system with dos 
> > > >> >> >> and a
> > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > >> >> >> networking
> > > >> >> >> I forget.
> > > >> >> >>
> > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > >> >> >> equation,
> > > >> >> >> but I don' t have any references right now over a dos stack.
> > > >> >> >>
> > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be 
> > > >> >> >> better,
> > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > >> >> >>
> > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. 
> > > >> >> >> I'm
> > > >> >> >> asking for everything here.  Objective is to have something that 
> > > >> >> >> could
> > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was 
> > > >> >> >> a
> > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > >> >> >>
> > > >> >> >> jim
> > > >> >> >> >
> > > >> >> >> > ,___
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > ------------------------------------
> > > >> >> >
> > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >>
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> > ------------------------------------
> > > >> >
> gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >
> > > >> >
> > > >> >
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >
> > > >
> > > >
> > >
> >
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2571
Date: Wed, 17 Oct 2012 17:30:19 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

Ouch.
Thanks for the heads up.
Another option:  pull the SIPP sockets and install
SIMM sockets.  Think the SIMMs would clear in a socket?


--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.  Once I soldered the pins on, the module height would not allow the cover to go on.
> Your results may vary,
> -Shawn
>
> -------- Original message --------
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> From: "techtalklive@..." <doug@...>
> To: RuGRiD-Laptop@yahoogroups.com
> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
> Well that sounds promising.  The only thing that would
> top that would be a native SCSI attached to the bus connectors
> in the accessory port.  A ParPort one would do in the meantime.
> Thanks!
>
> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> Anyone know the mem speed?  Hate to take the thing apart right
> now to find out.
> Thanks!
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
> >
> > The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > > As I might have mentioned in another post, if I could get
> > > another PC to appear as a mounted drive to the GRiD I'd be in
> > > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > > Any ideas there?
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >
> > > > Good luck with the Backpack stuff.
> > > >
> > > > There's a book called "Hot Links", which was produced by the same people
> > > > that produced LapLink.  In the back of the book is a disk with programs that
> > > > will let you transfer files, either via null modem cable or LapLink cable.
> > > > I doubt that the book is still in print, but it might be something to look
> > > > for.  If you get the book without the disk, let me know, and I'll get you
> > > > the software.  I can't remember if it lets you map the host drive to the
> > > > client machine, but that would be cool, if it does that.
> > > >
> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > "She said it was either her or the ham radio.  Over."
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "techtalklive@" <doug@>
> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > > Sent: Monday, October 15, 2012 10:47 PM
> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >
> > > >
> > > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > > Yes checking out Backpacks now. Just collected drivers from
> > > > > around the web for them and am checking on ebay for
> > > > > equipment.  I suspect they will work.
> > > > >
> > > > > I thought I might take a look to see if there was parallel port
> > > > > software that would work like "laplink" to tether to another PC
> > > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > > the 1530.
> > > > >
> > > > > That would be cool... and avoid purchasing old hardware.
> > > > >
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >>
> > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > > >> you
> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > > >>
> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> "She said it was either her or the ham radio.  Over."
> > > > >>
> > > > >>
> > > > >> ----- Original Message -----
> > > > >> From: "techtalklive@" <doug@>
> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >>
> > > > >>
> > > > >> >
> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > > >> > driver
> > > > >> > support.
> > > > >> > Other similar devices don't seem to be on the used market right not.
> > > > >> > I'm also considering a parallel based disk drive at this point.
> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > > >> > didn't
> > > > >> > actually run the numbers.
> > > > >> > DC
> > > > >> >
> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >> >>
> > > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > > >> >> 16550AFN
> > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > > >> >> have
> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > > > >> >> parallel
> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > > >> >> even
> > > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > > >> >>
> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> >> "She said it was either her or the ham radio.  Over."
> > > > >> >>
> > > > >> >>
> > > > >> >> ----- Original Message -----
> > > > >> >> From: "Androgenoide" <androgenoide@>
> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >> >>
> > > > >> >>
> > > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > > >> >> > Ethernet adapter that will work through either the serial or
> > > > >> >> > parallel
> > > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > > >> >> > the
> > > > >> >> > time.   I've got a serial device server now that would probably work
> > > > >> >> > too
> > > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > > >> >> > to
> > > > >> >> > see
> > > > >> >> > what would be required.   Either of those solutions would be limited
> > > > >> >> > by
> > > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > > >> >> > speeds
> > > > >> >> > are out of the question!
> > > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > > >> >> > also
> > > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > > >> >> > internet
> > > > >> >> > connection... (if you still have access to a dialup service... if
> > > > >> >> > not,
> > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > > >> >> > few
> > > > >> >> > hours at a time).
> > > > >> >> >
> > > > >> >> > Generally speaking, if an old machine has either a serial or
> > > > >> >> > parallel
> > > > >> >> > port
> > > > >> >> > and you can get it to boot into DOS, there is always a way to
> > > > >> >> > transfer
> > > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > > >> >> > another
> > > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > > >> >> > lot
> > > > >> >> > of
> > > > >> >> > file transfer programs out there, from Kermit to the original
> > > > >> >> > version
> > > > >> >> > of
> > > > >> >> > Procomm that will fit on a single floppy.
> > > > >> >> >
> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > > >> >> > full
> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > > >> >> > tricky
> > > > >> >> > and
> > > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > > >> >> > kind
> > > > >> >> > of
> > > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > > >> >> > a
> > > > >> >> > single floppy and run on systems with limited resources
> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > > >> >> > one
> > > > >> >> > seems to want 4MB of RAM.
> > > > >> >> >
> > > > >> >> > There are plenty of people on the web who have too much time on
> > > > >> >> > their
> > > > >> >> > hands and are still playing with machines even older than the
> > > > >> >> > Grid...
> > > > >> >> > You
> > > > >> >> > can still buy new after-market accessories for Commodores, for
> > > > >> >> > example,
> > > > >> >> > so
> > > > >> >> > don't assume that there are no new solutions to old problems.
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > > >> >> >>
> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > > >> >> >> >
> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > > >> >> >> > port
> > > > >> >> >> > to
> > > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > > >> >> >> > made
> > > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > > >> >> >> > And,
> > > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > > >> >> >> > browser
> > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > > >> >> >> > say
> > > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > > >> >> >> > Go
> > > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > > >> >> >> > a
> > > > >> >> >> > while.
> > > > >> >> >> >
> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > > >> >> >> > last
> > > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > > >> >> >> > force
> > > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > > >> >> >> > unless
> > > > >> >> >> > it
> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > > >> >> >> > installed
> > > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > > >> >> >> > one
> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > > >> >> >> > half
> > > > >> >> >> > hour to boot.
> > > > >> >> >> >
> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > > >> >> >> > else
> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > > >> >> >> > with
> > > > >> >> >> > a
> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > > >> >> >> > OS/browser
> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > > >> >> >> >
> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > > >> >> >> > <doug@> wrote:
> > > > >> >> >> > >
> > > > >> >> >> > > Like the hack job? :O
> > > > >> >> >> > >
> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > > >> >> >> > > screes?
> > > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > > >> >> >> > > fix it?) or look for a replacement?
> > > > >> >> >> > >
> > > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > > >> >> >> > > the point there.
> > > > >> >> >> > >
> > > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > > >> >> >> > > I'd need the LAN hardware I guess.
> > > > >> >> >> > > Any other ideas?
> > > > >> >> >> > >
> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > > >> >> >> > > contacts
> > > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > > >> >> >> > > metal.
> > > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > > >> >> >> > > the
> > > > >> >> >> > > radial DC jack. Strange?
> > > > >> >> >> > >
> > > > >> >> >> > > DC
> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > >
> > > > >> >> >> > > > Great job, Doug!
> > > > >> >> >> > > >
> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > > > >> >> >> > > > beautiful
> > > > >> >> >> > machines? And yep, that's the way it works.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > > >> >> >> > > > registers
> > > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > > >> >> >> > the
> > > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > > >> >> >> > simply
> > > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > > >> >> >> > everything's hunky-dory.
> > > > >> >> >> > > >
> > > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > > >> >> >> > > > upgrade
> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > > >> >> >> > Great
> > > > >> >> >> > to
> > > > >> >> >> > hear the HDD is good too.
> > > > >> >> >> > > >
> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > > >> >> >> > > > that
> > > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > > >> >> >> > 1520,
> > > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > > >> >> >> > shipping.
> > > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > > >> >> >> > that
> > > > >> >> >> > was
> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > > >> >> >> > discover
> > > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > > >> >> >> > had
> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > > >> >> >> > this
> > > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > > >> >> >> > a
> > > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > > >> >> >> > But
> > > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > > >> >> >> > The
> > > > >> >> >> > original owner of this machine definitely took care of it.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Phil
> > > > >> >> >> > > >
> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > > >> >> >> > > > > to
> > > > >> >> >> > > > > a
> > > > >> >> >> > convenient place for the battery. Upon power up it said
> > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > > >> >> >> > > > > wrong
> > > > >> >> >> > > > > with
> > > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > > >> >> >> > > > > POST
> > > > >> >> >> > and Autoexec.
> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > >> >> >> > > > > Now it boots cleanly.
> > > > >> >> >> > > > > Has Lotus123 on the HD.
> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > > > >> >> >> > > > > everything
> > > > >> >> >> > > > > works.
> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > > >> >> >> > > > > RAM,
> > > > >> >> >> > > > > a
> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > >> >> >> > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > > >> >> >> > > > > > X2
> > > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > > >> >> >> > > > > > make sure the rest of it is still good.
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > > >> >> >> > <andrebakken@> wrote:
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > > >> >> >> > > > > > > difference.
> > > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > > >> >> >> > directly
> > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > > >> >> >> > > > > > > will
> > > > >> >> >> > radiate more interference/noise out onto the mains.
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > There are two in there that are the same.
> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > > >> >> >> > > > > > > > I have them out already.
> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > DC
> > > > >> >> >> > > > > ; > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Good Find, DC
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > > >> >> >> > and
> > > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > > >> >> >> > them
> > > > >> >> >> > for you.
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Phil
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > > >> >> >> > > > > > > > > > in
> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > > >> >> >> > replace both
> > > > >> >> >> > > > > > > > > > of course.
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > > >> >> >> > > > > > > > > > > that
> > > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > > >> >> >> > > > > > > > > > > supply
> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > > >> >> >> > (unfortunately,
> > > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > > >> >> >> > > > > > > > > > > isolation!)
> > > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > > >> >> >> > > > > > > > > > > manuals
> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > > >> >> >> > > > > > > > > > > pointers
> > > > >> >> >> > form
> > > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > > >> >> >> > > > > > > > > > > dead
> > > > >> >> >> > diagnosis.
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > > >> >> >> > > > > > > > > > > 1530
> > > > >> >> >> > > > > > > > > > > will
> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > > >> >> >> > > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > >
> > > > >> >> >> > >
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > > >> >> >> that
> > > > >> >> >> can be easily had to run say serial (probably ppp) from something 
> > > > >> >> >> like
> > > > >> >> >> a
> > > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > > >> >> >> and a
> > > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > > >> >> >> networking
> > > > >> >> >> I forget.
> > > > >> >> >>
> > > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > > >> >> >> equation,
> > > > >> >> >> but I don' t have any references right now over a dos stack.
> > > > >> >> >>
> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > > >> >> >> better,
> > > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > > >> >> >>
> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > > >> >> >> I'm
> > > > >> >> >> asking for everything here.  Objective is to have something that
> > > > >> >> >> could
> > > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > > >> >> >> a
> > > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > > >> >> >>
> > > > >> >> >> jim
> > > > >> >> >> >
> > > > >> >> >> > ,___
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > ------------------------------------
> > > > >> >> >
> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >>
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> > ------------------------------------
> > > > >> >
> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >>
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>

Yahoo! Message number: 2572
Date: Wed, 17 Oct 2012 14:03:09 -0400
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=utf-8

I believe SIMM sockets are surface mount.  I could be wrong. It's not impossible, just a lot of work.
-Shawn

-------- Original message --------
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
From: "techtalklive@ymail.com" <doug@crawfordltd.com>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Ouch.
Thanks for the heads up.
Another option:  pull the SIPP sockets and install
SIMM sockets.  Think the SIMMs would clear in a socket?


--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM. Â Once I soldered the pins on, the module height would not allow the cover to go on.
> Your results may vary,
> -Shawn
> 
> -------- Original message --------
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> From: "techtalklive@..." <doug@...>
> To: RuGRiD-Laptop@yahoogroups.com
> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> 
> 
> Well that sounds promising.  The only thing that would
> top that would be a native SCSI attached to the bus connectors
> in the accessory port.  A ParPort one would do in the meantime.
> Thanks!
> 
> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> Anyone know the mem speed?  Hate to take the thing apart right
> now to find out.
> Thanks!
> 
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
> > 
> > The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
> > 
> > Phil
> > 
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > > As I might have mentioned in another post, if I could get 
> > > another PC to appear as a mounted drive to the GRiD I'd be in
> > > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > > Any ideas there?
> > > 
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >
> > > > Good luck with the Backpack stuff.
> > > > 
> > > > There's a book called "Hot Links", which was produced by the same people 
> > > > that produced LapLink.  In the back of the book is a disk with programs that 
> > > > will let you transfer files, either via null modem cable or LapLink cable. 
> > > > I doubt that the book is still in print, but it might be something to look 
> > > > for.  If you get the book without the disk, let me know, and I'll get you 
> > > > the software.  I can't remember if it lets you map the host drive to the 
> > > > client machine, but that would be cool, if it does that.
> > > > 
> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > "She said it was either her or the ham radio.  Over."
> > > > 
> > > > 
> > > > ----- Original Message ----- 
> > > > From: "techtalklive@" <doug@>
> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > > Sent: Monday, October 15, 2012 10:47 PM
> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > 
> > > > 
> > > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > > Yes checking out Backpacks now. Just collected drivers from
> > > > > around the web for them and am checking on ebay for
> > > > > equipment.  I suspect they will work.
> > > > >
> > > > > I thought I might take a look to see if there was parallel port
> > > > > software that would work like "laplink" to tether to another PC
> > > > > but would make a directory/drive on the the host PC appear as a drive to 
> > > > > the 1530.
> > > > >
> > > > > That would be cool... and avoid purchasing old hardware.
> > > > >
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >>
> > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > > >> make it, but it would be breathing hard.  As for parallel drives, see if 
> > > > >> you
> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > > >>
> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> "She said it was either her or the ham radio.  Over."
> > > > >>
> > > > >>
> > > > >> ----- Original Message -----
> > > > >> From: "techtalklive@" <doug@>
> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >>
> > > > >>
> > > > >> >
> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited 
> > > > >> > driver
> > > > >> > support.
> > > > >> > Other similar devices don't seem to be on the used market right not.
> > > > >> > I'm also considering a parallel based disk drive at this point.
> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I 
> > > > >> > didn't
> > > > >> > actually run the numbers.
> > > > >> > DC
> > > > >> >
> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >> >>
> > > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > > >> >> 16550AFN
> > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > > >> >> have
> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard 
> > > > >> >> parallel
> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > > >> >> even
> > > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > > >> >>
> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> >> "She said it was either her or the ham radio.  Over."
> > > > >> >>
> > > > >> >>
> > > > >> >> ----- Original Message ----- 
> > > > >> >> From: "Androgenoide" <androgenoide@>
> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >> >>
> > > > >> >>
> > > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > > >> >> > Ethernet adapter that will work through either the serial or 
> > > > >> >> > parallel
> > > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > > >> >> > the
> > > > >> >> > time.   I've got a serial device server now that would probably work
> > > > >> >> > too
> > > > >> >> > but I've got too much going on at the moment to dig out a Grid just 
> > > > >> >> > to
> > > > >> >> > see
> > > > >> >> > what would be required.   Either of those solutions would be limited 
> > > > >> >> > by
> > > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit 
> > > > >> >> > speeds
> > > > >> >> > are out of the question!
> > > > >> >> > Another thought... The guy who put together the Techworm boot disk 
> > > > >> >> > also
> > > > >> >> > had one called Networm, a single floppy that could do a dialup 
> > > > >> >> > internet
> > > > >> >> > connection... (if you still have access to a dialup service... if 
> > > > >> >> > not,
> > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a 
> > > > >> >> > few
> > > > >> >> > hours at a time).
> > > > >> >> >
> > > > >> >> > Generally speaking, if an old machine has either a serial or 
> > > > >> >> > parallel
> > > > >> >> > port
> > > > >> >> > and you can get it to boot into DOS, there is always a way to 
> > > > >> >> > transfer
> > > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > > >> >> > another
> > > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a 
> > > > >> >> > lot
> > > > >> >> > of
> > > > >> >> > file transfer programs out there, from Kermit to the original 
> > > > >> >> > version
> > > > >> >> > of
> > > > >> >> > Procomm that will fit on a single floppy.
> > > > >> >> >
> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a 
> > > > >> >> > full
> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be 
> > > > >> >> > tricky
> > > > >> >> > and
> > > > >> >> > would require some hardware tweaks even to make a slow machine... 
> > > > >> >> > kind
> > > > >> >> > of
> > > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on 
> > > > >> >> > a
> > > > >> >> > single floppy and run on systems with limited resources
> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that 
> > > > >> >> > one
> > > > >> >> > seems to want 4MB of RAM.
> > > > >> >> >
> > > > >> >> > There are plenty of people on the web who have too much time on 
> > > > >> >> > their
> > > > >> >> > hands and are still playing with machines even older than the 
> > > > >> >> > Grid...
> > > > >> >> > You
> > > > >> >> > can still buy new after-market accessories for Commodores, for 
> > > > >> >> > example,
> > > > >> >> > so
> > > > >> >> > don't assume that there are no new solutions to old problems.
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > > >> >> >>
> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > > >> >> >> >
> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel 
> > > > >> >> >> > port
> > > > >> >> >> > to
> > > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > > >> >> >> > made
> > > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > > >> >> >> > And,
> > > > >> >> >> > of course, the Arachne browser... not many choices for a DOS 
> > > > >> >> >> > browser
> > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to 
> > > > >> >> >> > say
> > > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow." 
> > > > >> >> >> > Go
> > > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be 
> > > > >> >> >> > a
> > > > >> >> >> > while.
> > > > >> >> >> >
> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > > >> >> >> > last
> > > > >> >> >> > week of a guy who was competing with a friend to see who could 
> > > > >> >> >> > force
> > > > >> >> >> > Windows XP to run with the least resources. It won't install 
> > > > >> >> >> > unless
> > > > >> >> >> > it
> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > > >> >> >> > installed
> > > > >> >> >> > you can remove RAM and underclock the machine... He said he got 
> > > > >> >> >> > one
> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > > >> >> >> > half
> > > > >> >> >> > hour to boot.
> > > > >> >> >> >
> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > > >> >> >> > else
> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online 
> > > > >> >> >> > with
> > > > >> >> >> > a
> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > > >> >> >> > OS/browser
> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > > >> >> >> >
> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > > >> >> >> > <doug@> wrote:
> > > > >> >> >> > >
> > > > >> >> >> > > Like the hack job? :O
> > > > >> >> >> > >
> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped 
> > > > >> >> >> > > screes?
> > > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > > >> >> >> > > fix it?) or look for a replacement?
> > > > >> >> >> > >
> > > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > > >> >> >> > > the point there.
> > > > >> >> >> > >
> > > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > > >> >> >> > > I'd need the LAN hardware I guess.
> > > > >> >> >> > > Any other idea  s?
> > > > >> >> >> > >
> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > > >> >> >> > > it that mate inside the cavity. But one of the two spring 
> > > > >> >> >> > > contacts
> > > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > > >> >> >> > > metal.
> > > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into 
> > > > >> >> >> > > the
> > > > >> >> >> > > radial DC jack. Strange?
> > > > >> >> >> > >
> > > > >> >> >> > > DC
> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" 
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > >
> > > > >> >> >> > > > Great job, Doug!
> > > > >> >> >> > > >
> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of these 
> > > > >> >> >> > > > beautiful
> > > > >> >> >> > machines? And yep, that's the way it works.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS 
> > > > >> >> >> > > > registers
> > > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > > >> >> >> > the
> > > > >> >> >> > computer tells you the clock had stopped (which it did), and 
> > > > >> >> >> > simply
> > > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > > >> >> >> > everything's hunky-dory.
> > > > >> >> >> > > >
> > > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > > >> >> >> > > > upgrade
> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22. 
> > > > >> >> >> > Great
> > > > >> >> >> > to
> > > > >> >> >> > hear the HDD is good too.
> > > > >> >> >> > > >
> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > > >> >> >> > > > that
> > > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > > >> >> >> > 1520,
> > > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > > >> >> >> > shipping.
> > > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but 
> > > > >> >> >> > that
> > > > >> >> >> > was
> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to 
> > > > >> >> >> > discover
> > > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > > >> >> >> > had
> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > > >> >> >> > this
> > > > >> >> >> > solved the configuration error just fine. But alas, I didn't get 
> > > > >> >> >> > a
> > > > >> >> >> > triple crown winner here. The Conner drive was definitely dead. 
> > > > >> >> >> > But
> > > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > > >> >> >> > The
> > > > >> >> >> > original owner of this machine definitely took care of it.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Phil
> > > > >> >> >> > > >
> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires 
> > > > >> >> >> > > > > to
> > > > >> >> >> > > > > a
> > > > >> >> >> > convenient place for the battery. Upon power up it said
> > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > > >> >> >> > > > > The "stopped" message threw me, I thought something was 
> > > > >> >> >> > > > > wrong
> > > > >> >> >> > > > > with
> > > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > > >> >> >> > > > > POST
> > > > >> >> >> > and Autoexec.
> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > >> >> >> > > > > Now it boots cleanly.
> > > > >> >> >> > > > > Has Lotus123 on the HD.
> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd 
> > > > >> >> >> > > > > everything
> > > > >> >> >> > > > > works.
> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB 
> > > > >> >> >> > > > > RAM,
> > > > >> >> >> > > > > a
> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > >> >> >> > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the 
> > > > >> >> >> > > > > > X2
> > > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > > >> >> >> > > > > > make sure the rest of it is still good.
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > gt; >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > > >> >> >> > <andrebakken@> wrote:
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > > >> >> >> > > > > > > difference.
> > > > >> >> >> > The X2 also signifies they're an enhanced type meant to go 
> > > > >> >> >> > directly
> > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > > >> >> >> > > > > > > The PSU will work without those cap's in place, but 
> > > > >> >> >> > > > > > > will
> > > > >> >> >> > radiate more interference/noise out onto the mains.
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > There are two in there that are the same.
> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > > >> >> >> > > > > > > > I have them out already.
> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > DC
> > > > >> >> >> > > > > ; > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" 
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Good Find, DC
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > > >> >> >> > and
> > > > >> >> >> > amperage? I'll look through my units and see if I can identify 
> > > > >> >> >> > them
> > > > >> >> >> > for you.
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Phil
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap 
> > > > >> >> >> > > > > > > > > > in
> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > > >> >> >> > replace both
> > > > >> >> >> > > > > > > > > > of course.
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > > >> >> >> > > > > > > > > > > that
> > > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > > >> >> >> > > > > > > > > > > supply
> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > > >> >> >> > (unfortunately,
> > > > >> >> >> > > > > > > > > > > that would have been an easy problem 
> > > > >> >> >> > > > > > > > > > > isolation!)
> > > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > > >> >> >> > > > > > > > > > > manuals
> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > > >> >> >> > > > > > > > > > > pointers
> > > > >> >> >> > form
> > > > >> >> >> > > > > > > > > > > folks who have already performed cold stone 
> > > > >> >> >> > > > > > > > > > > dead
> > > > >> >> >> > diagnosis.
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean 
> > > > >> >> >> > > > > > > > > > > 1530
> > > > >> >> >> > > > > > > > > > > will
> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > > >> >> >> > > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > >
> > > > >> >> >> > >
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > > >> >> >> that
> > > > >> >> >> can be easily had to run say serial (probably ppp) from something 
> > > > >> >> >> like
> > > > >> >> >> a
> > > > >> >> >> small system like the raspberry pi serially to a system with dos 
> > > > >> >> >> and a
> > > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > > >> >> >> networking
> > > > >> >> >> I forget.
> > > > >> >> >>
> > > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > > >> >> >> equation,
> > > > >> >> >> but I don' t have any references right now over a dos stack.
> > > > >> >> >>
> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be 
> > > > >> >> >> better,
> > > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > > >> >> >>
> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too. 
> > > > >> >> >> I'm
> > > > >> >> >> asking for everything here.  Objective is to have something that 
> > > > >> >> >> could
> > > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was 
> > > > >> >> >> a
> > > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > > >> >> >>
> > > > >> >> >> jim
> > > > >> >> >> >
> > > > >> >> >> > ,___
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > ------------------------------------
> > > > >> >> >
> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >>
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> > ------------------------------------
> > > > >> >
> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >>
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
> 
> 
> 
> 
> ------------------------------------
> 
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2573
Date: Wed, 17 Oct 2012 18:56:33 -0000
From: "Androgenoide"
Subject: Re: Typical 1500 series failure modes?

I found one of those in a thrift store just a couple weeks ago... an Adaptec MiniSCSI EPP still in the original box with the envelope of driver disks unopened.   Haven't tried to use it yet but, from skimming through the manual, it seems to have some limits on the types of devices it works with.







--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
>
> The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > As I might have mentioned in another post, if I could get
> > another PC to appear as a mounted drive to the GRiD I'd be in
> > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > Any ideas there?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >
> > > Good luck with the Backpack stuff.
> > >
> > > There's a book called "Hot Links", which was produced by the same people
> > > that produced LapLink.  In the back of the book is a disk with programs that
> > > will let you transfer files, either via null modem cable or LapLink cable.
> > > I doubt that the book is still in print, but it might be something to look
> > > for.  If you get the book without the disk, let me know, and I'll get you
> > > the software.  I can't remember if it lets you map the host drive to the
> > > client machine, but that would be cool, if it does that.
> > >
> > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > "She said it was either her or the ham radio.  Over."
> > >
> > >
> > > ----- Original Message -----
> > > From: "techtalklive@" <doug@>
> > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > Sent: Monday, October 15, 2012 10:47 PM
> > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >
> > >
> > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > Yes checking out Backpacks now. Just collected drivers from
> > > > around the web for them and am checking on ebay for
> > > > equipment.  I suspect they will work.
> > > >
> > > > I thought I might take a look to see if there was parallel port
> > > > software that would work like "laplink" to tether to another PC
> > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > the 1530.
> > > >
> > > > That would be cool... and avoid purchasing old hardware.
> > > >
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >>
> > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > >> you
> > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > >>
> > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> "She said it was either her or the ham radio.  Over."
> > > >>
> > > >>
> > > >> ----- Original Message -----
> > > >> From: "techtalklive@" <doug@>
> > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >>
> > > >>
> > > >> >
> > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > >> > driver
> > > >> > support.
> > > >> > Other similar devices don't seem to be on the used market right not.
> > > >> > I'm also considering a parallel based disk drive at this point.
> > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > >> > didn't
> > > >> > actually run the numbers.
> > > >> > DC
> > > >> >
> > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >> >>
> > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > >> >> 16550AFN
> > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > >> >> have
> > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > > >> >> parallel
> > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > >> >> even
> > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > >> >>
> > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> >> "She said it was either her or the ham radio.  Over."
> > > >> >>
> > > >> >>
> > > >> >> ----- Original Message -----
> > > >> >> From: "Androgenoide" <androgenoide@>
> > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >> >>
> > > >> >>
> > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > >> >> > Ethernet adapter that will work through either the serial or
> > > >> >> > parallel
> > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > >> >> > the
> > > >> >> > time.   I've got a serial device server now that would probably work
> > > >> >> > too
> > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > >> >> > to
> > > >> >> > see
> > > >> >> > what would be required.   Either of those solutions would be limited
> > > >> >> > by
> > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > >> >> > speeds
> > > >> >> > are out of the question!
> > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > >> >> > also
> > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > >> >> > internet
> > > >> >> > connection... (if you still have access to a dialup service... if
> > > >> >> > not,
> > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > >> >> > few
> > > >> >> > hours at a time).
> > > >> >> >
> > > >> >> > Generally speaking, if an old machine has either a serial or
> > > >> >> > parallel
> > > >> >> > port
> > > >> >> > and you can get it to boot into DOS, there is always a way to
> > > >> >> > transfer
> > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > >> >> > another
> > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > >> >> > lot
> > > >> >> > of
> > > >> >> > file transfer programs out there, from Kermit to the original
> > > >> >> > version
> > > >> >> > of
> > > >> >> > Procomm that will fit on a single floppy.
> > > >> >> >
> > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > >> >> > full
> > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > >> >> > tricky
> > > >> >> > and
> > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > >> >> > kind
> > > >> >> > of
> > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > >> >> > a
> > > >> >> > single floppy and run on systems with limited resources
> > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > >> >> > one
> > > >> >> > seems to want 4MB of RAM.
> > > >> >> >
> > > >> >> > There are plenty of people on the web who have too much time on
> > > >> >> > their
> > > >> >> > hands and are still playing with machines even older than the
> > > >> >> > Grid...
> > > >> >> > You
> > > >> >> > can still buy new after-market accessories for Commodores, for
> > > >> >> > example,
> > > >> >> > so
> > > >> >> > don't assume that there are no new solutions to old problems.
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > >> >> >>
> > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > >> >> >> >
> > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > >> >> >> > port
> > > >> >> >> > to
> > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > >> >> >> > made
> > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > >> >> >> > And,
> > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > >> >> >> > browser
> > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > >> >> >> > say
> > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > >> >> >> > Go
> > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > >> >> >> > a
> > > >> >> >> > while.
> > > >> >> >> >
> > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > >> >> >> > last
> > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > >> >> >> > force
> > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > >> >> >> > unless
> > > >> >> >> > it
> > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > >> >> >> > installed
> > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > >> >> >> > one
> > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > >> >> >> > half
> > > >> >> >> > hour to boot.
> > > >> >> >> >
> > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > >> >> >> > else
> > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > >> >> >> > with
> > > >> >> >> > a
> > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > >> >> >> > OS/browser
> > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > >> >> >> >
> > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > >> >> >> > <doug@> wrote:
> > > >> >> >> > >
> > > >> >> >> > > Like the hack job? :O
> > > >> >> >> > >
> > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > >> >> >> > > screes?
> > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > >> >> >> > > fix it?) or look for a replacement?
> > > >> >> >> > >
> > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > >> >> >> > > the point there.
> > > >> >> >> > >
> > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > >> >> >> > > I'd need the LAN hardware I guess.
> > > >> >> >> > > Any other ideas?
> > > >> >> >> > >
> > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > >> >> >> > > contacts
> > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > >> >> >> > > metal.
> > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > >> >> >> > > the
> > > >> >> >> > > radial DC jack. Strange?
> > > >> >> >> > >
> > > >> >> >> > > DC
> > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > >
> > > >> >> >> > > > Great job, Doug!
> > > >> >> >> > > >
> > > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > > >> >> >> > > > beautiful
> > > >> >> >> > machines? And yep, that's the way it works.
> > > >> >> >> > > >
> > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > >> >> >> > > > registers
> > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > >> >> >> > the
> > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > >> >> >> > simply
> > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > >> >> >> > everything's hunky-dory.
> > > >> >> >> > > >
> > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > >> >> >> > > > upgrade
> > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > >> >> >> > Great
> > > >> >> >> > to
> > > >> >> >> > hear the HDD is good too.
> > > >> >> >> > > >
> > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > >> >> >> > > > that
> > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > >> >> >> > 1520,
> > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > >> >> >> > shipping.
> > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > >> >> >> > that
> > > >> >> >> > was
> > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > >> >> >> > discover
> > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > >> >> >> > had
> > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > >> >> >> > this
> > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > >> >> >> > a
> > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > >> >> >> > But
> > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > >> >> >> > The
> > > >> >> >> > original owner of this machine definitely took care of it.
> > > >> >> >> > > >
> > > >> >> >> > > > Phil
> > > >> >> >> > > >
> > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > >
> > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > >> >> >> > > > > to
> > > >> >> >> > > > > a
> > > >> >> >> > convenient place for the battery. Upon power up it said
> > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > >> >> >> > > > > wrong
> > > >> >> >> > > > > with
> > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > >> >> >> > > > > POST
> > > >> >> >> > and Autoexec.
> > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > >> >> >> > > > > Now it boots cleanly.
> > > >> >> >> > > > > Has Lotus123 on the HD.
> > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > > >> >> >> > > > > everything
> > > >> >> >> > > > > works.
> > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > >> >> >> > > > > RAM,
> > > >> >> >> > > > > a
> > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > >> >> >> > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > >> >> >> > > > > > X2
> > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > >> >> >> > > > > > make sure the rest of it is still good.
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > >> >> >> > <andrebakken@> wrote:
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > >> >> >> > > > > > > difference.
> > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > >> >> >> > directly
> > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > >> >> >> > > > > > > will
> > > >> >> >> > radiate more interference/noise out onto the mains.
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > There are two in there that are the same.
> > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > >> >> >> > > > > > > > I have them out already.
> > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > DC
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Good Find, DC
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > >> >> >> > and
> > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > >> >> >> > them
> > > >> >> >> > for you.
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Phil
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > >> >> >> > > > > > > > > > in
> > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > >> >> >> > replace both
> > > >> >> >> > > > > > > > > > of course.
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > DC
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > >> >> >> > > > > > > > > > > that
> > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > >> >> >> > > > > > > > > > > supply
> > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > >> >> >> > (unfortunately,
> > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > >> >> >> > > > > > > > > > > isolation!)
> > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > >> >> >> > > > > > > > > > > manuals
> > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > >> >> >> > > > > > > > > > > pointers
> > > >> >> >> > form
> > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > >> >> >> > > > > > > > > > > dead
> > > >> >> >> > diagnosis.
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > >> >> >> > > > > > > > > > > 1530
> > > >> >> >> > > > > > > > > > > will
> > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > >> >> >> > > > > > > > > > > DC
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > >
> > > >> >> >> > >
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > >> >> >> that
> > > >> >> >> can be easily had to run say serial (probably ppp) from something
> > > >> >> >> like
> > > >> >> >> a
> > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > >> >> >> and a
> > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > >> >> >> networking
> > > >> >> >> I forget.
> > > >> >> >>
> > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > >> >> >> equation,
> > > >> >> >> but I don' t have any references right now over a dos stack.
> > > >> >> >>
> > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > >> >> >> better,
> > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > >> >> >>
> > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > >> >> >> I'm
> > > >> >> >> asking for everything here.  Objective is to have something that
> > > >> >> >> could
> > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > >> >> >> a
> > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > >> >> >>
> > > >> >> >> jim
> > > >> >> >> >
> > > >> >> >> > ,___
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > ------------------------------------
> > > >> >> >
> > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >>
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> > ------------------------------------
> > > >> >
> > > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >
> > > >> >
> > > >> >
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >
> > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2574
Date: Wed, 17 Oct 2012 22:00:18 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

That's wonderful!

I got my MiniSCSI EPP off ebay, but it didn't have the software at all. I have obtained SCSIworks disks, but I am not sure if those have the same programs. I would like to ontain the software on those disks if possible. Thanks.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Androgenoide" <androgenoide@...> wrote:
>
> I found one of those in a thrift store just a couple weeks ago... an Adaptec MiniSCSI EPP still in the original box with the envelope of driver disks unopened.   Haven't tried to use it yet but, from skimming through the manual, it seems to have some limits on the types of devices it works with.
>
>
>
>
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
> >
> > The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > > As I might have mentioned in another post, if I could get
> > > another PC to appear as a mounted drive to the GRiD I'd be in
> > > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > > Any ideas there?
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >
> > > > Good luck with the Backpack stuff.
> > > >
> > > > There's a book called "Hot Links", which was produced by the same people
> > > > that produced LapLink.  In the back of the book is a disk with programs that
> > > > will let you transfer files, either via null modem cable or LapLink cable.
> > > > I doubt that the book is still in print, but it might be something to look
> > > > for.  If you get the book without the disk, let me know, and I'll get you
> > > > the software.  I can't remember if it lets you map the host drive to the
> > > > client machine, but that would be cool, if it does that.
> > > >
> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > "She said it was either her or the ham radio.  Over."
> > > > 
> > > >
> > > > ----- Original Message -----
> > > > From: "techtalklive@" <doug@>
> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > > Sent: Monday, October 15, 2012 10:47 PM
> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >
> > > >
> > > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > > Yes checking out Backpacks now. Just collected drivers from
> > > > > around the web for them and am checking on ebay for
> > > > > equipment.  I suspect they will work.
> > > > >
> > > > > I thought I might take a look to see if there was parallel port
> > > > > software that would work like "laplink" to tether to another PC
> > > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > > the 1530.
> > > > >
> > > > > That would be cool... and avoid purchasing old hardware.
> > > > >
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >>
> > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > > >> you
> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > > >>
> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> "She said it was either her or the ham radio.  Over."
> > > > >>
> > > > >>
> > > > >> ----- Original Message -----
> > > > >> From: "techtalklive@" <doug@>
> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >>
> > > > >>
> > > > >> >
> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > > >> > driver
> > > > >> > support.
> > > > >> > Other similar devices don't seem to be on the used market right not.
> > > > >> > I'm also considering a parallel based disk drive at this point.
> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > > >> > didn't
> > > > >> > actually run the numbers.
> > > > >> > DC
> > > > >> >
> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >> >>
> > > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > > >> >> 16550AFN
> > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > > >> >> have
> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > > > >> >> parallel
> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > > >> >> even
> > > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > > >> >>
> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> >> "She said it was either her or the ham radio.  Over."
> > > > >> >>
> > > > >> >>
> > > > >> >> ----- Original Message -----
> > > > >> >> From: "Androgenoide" <androgenoide@>
> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >> >>
> > > > >> >>
> > > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > > >> >> > Ethernet adapter that will work through either the serial or
> > > > >> >> > parallel
> > > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > > >> >> > the
> > > > >> >> > time.   I've got a serial device server now that would probably work
> > > > >> >> > too
> > > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > > >> >> > to
> > > > >> >> > see
> > > > >> >> > what would be required.   Either of those solutions would be limited
> > > > >> >> > by
> > > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > > >> >> > speeds
> > > > >> >> > are out of the question!
> > > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > > >> >> > also
> > > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > > >> >> > internet
> > > > >> >> > connection... (if you still have access to a dialup service... if
> > > > >> >> > not,
> > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > > >> >> > few
> > > > >> >> > hours at a time).
> > > > >> >> >
> > > > >> >> > Generally speaking, if an old machine has either a serial or
> > > > >> >> > parallel
> > > > >> >> > port
> > > > >> >> > and you can get it to boot into DOS, there is always a way to
> > > > >> >> > transfer
> > > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > > >> >> > another
> > > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > > >> >> > lot
> > > > >> >> > of
> > > > >> >> > file transfer programs out there, from Kermit to the original
> > > > >> >> > version
> > > > >> >> > of
> > > > >> >> > Procomm that will fit on a single floppy.
> > > > >> >> >
> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > > >> >> > full
> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > > >> >> > tricky
> > > > >> >> > and
> > > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > > >> >> > kind
> > > > >> >> > of
> > > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > > >> >> > a
> > > > >> >> > single floppy and run on systems with limited resources
> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > > >> >> > one
> > > > >> >> > seems to want 4MB of RAM.
> > > > >> >> >
> > > > >> >> > There are plenty of people on the web who have too much time on
> > > > >> >> > their
> > > > >> >> > hands and are still playing with machines even older than the
> > > > >> >> > Grid...
> > > > >> >> > You
> > > > >> >> > can still buy new after-market accessories for Commodores, for
> > > > >> >> > example,
> > > > >> >> > so
> > > > >> >> > don't assume that there are no new solutions to old problems.
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > > >> >> >>
> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > > >> >> >> >
> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > > >> >> >> > port
> > > > >> >> >> > to
> > > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > > >> >> >> > made
> > > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > > >> >> >> > And,
> > > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > > >> >> >> > browser
> > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > > >> >> >> > say
> > > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > > >> >> >> > Go
> > > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > > >> >> >> > a
> > > > >> >> >> > while.
> > > > >> >> >> >
> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > > >> >> >> > last
> > > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > > >> >> >> > force
> > > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > > >> >> >> > unless
> > > > >> >> >> > it
> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > > >> >> >> > installed
> > > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > > >> >> >> > one
> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > > >> >> >> > half
> > > > >> >> >> > hour to boot.
> > > > >> >> >> >
> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > > >> >> >> > else
> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > > >> >> >> > with
> > > > >> >> >> > a
> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > > >> >> >> > OS/browser
> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > > >> >> >> >
> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > > >> >> >> > <doug@> wrote:
> > > > >> >> >> > >
> > > > >> >> >> > > Like the hack job? :O
> > > > >> >> >> > >
> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > > >> >> >> > > screes?
> > > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > > >> >> >> > > fix it?) or look for a replacement?
> > > > >> >> >> > >
> > > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > > >> >> >> > > the point there.
> > > > >> >> >> > >
> > > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > > >> >> >> > > I'd need the LAN hardware I guess.
> > > > >> >> >> > > Any other ideas?
> > > > >> >> >> > >
> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > > >> >> >> > > contacts
> > > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > > >> >> >> > > metal.
> > > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > > >> >> >> > > the
> > > > >> >> >> > > radial DC jack. Strange?
> > > > >> >> >> > >
> > > > >> >> >> > > DC
> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > >
> > > > >> >> >> > > > Great job, Doug!
> > > > >> >> >> > > >
> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > > > >> >> >> > > > beautiful
> > > > >> >> >> > machines? And yep, that's the way it works.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > > >> >> >> > > > registers
> > > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > > >> >> >> > the
> > > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > > >> >> >> > simply
> > > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > > >> >> >> > everything's hunky-dory.
> > > > >> >> >> > > >
> > > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > > >> >> >> > > > upgrade
> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > > >> >> >> > Great
> > > > >> >> >> > to
> > > > >> >> >> > hear the HDD is good too.
> > > > >> >> >> > > >
> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > > >> >> >> > > > that
> > > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > > >> >> >> > 1520,
> > > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > > >> >> >> > shipping.
> > > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > > >> >> >> > that
> > > > >> >> >> > was
> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > > >> >> >> > discover
> > > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > > >> >> >> > had
> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > > >> >> >> > this
> > > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > > >> >> >> > a
> > > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > > >> >> >> > But
> > > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > > >> >> >> > The
> > > > >> >> >> > original owner of this machine definitely took care of it.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Phil
> > > > >> >> >> > > >
> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > > >> >> >> > > > > to
> > > > >> >> >> > > > > a
> > > > >> >> >> > convenient place for the battery. Upon power up it said
> > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > > >> >> >> > > > > wrong
> > > > >> >> >> > > > > with
> > > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > > >> >> >> > > > > POST
> > > > >> >> >> > and Autoexec.
> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > >> >> >> > > > > Now it boots cleanly.
> > > > >> >> >> > > > > Has Lotus123 on the HD.
> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > > > >> >> >> > > > > everything
> > > > >> >> >> > > > > works.
> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > > >> >> >> > > > > RAM,
> > > > >> >> >> > > > > a
> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > >> >> >> > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > > >> >> >> > > > > > X2
> > > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > > >> >> >> > > > > > make sure the rest of it is still good.
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > > >> >> >> > <andrebakken@> wrote:
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > > >> >> >> > > > > > > difference.
> > > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > > >> >> >> > directly
> > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > > >> >> >> > > > > > > will
> > > > >> >> >> > radiate more interference/noise out onto the mains.
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > There are two in there that are the same.
> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > > >> >> >> > > > > > > > I have them out already.
> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > DC
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Good Find, DC
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > > >> >> >> > and
> > > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > > >> >> >> > them
> > > > >> >> >> > for you.
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Phil
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > > >> >> >> > > > > > > > > > in
> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > > >> >> >> > replace both
> > > > >> >> >> > > > > > > > > > of course.
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > > >> >> >> > > > > > > > > > > that
> > > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > > >> >> >> > > > > > > > > > > supply
> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > > >> >> >> > (unfortunately,
> > > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > > >> >> >> > > > > > > > > > > isolation!)
> > > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > > >> >> >> > > > > > > > > > > manuals
> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > > >> >> >> > > > > > > > > > > pointers
> > > > >> >> >> > form
> > > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > > >> >> >> > > > > > > > > > > dead
> > > > >> >> >> > diagnosis.
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > > >> >> >> > > > > > > > > > > 1530
> > > > >> >> >> > > > > > > > > > > will
> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > > >> >> >> > > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > >
> > > > >> >> >> > >
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > > >> >> >> that
> > > > >> >> >> can be easily had to run say serial (probably ppp) from something
> > > > >> >> >> like
> > > > >> >> >> a
> > > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > > >> >> >> and a
> > > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > > >> >> >> networking
> > > > >> >> >> I forget.
> > > > >> >> >>
> > > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > > >> >> >> equation,
> > > > >> >> >> but I don' t have any references right now over a dos stack.
> > > > >> >> >>
> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > > >> >> >> better,
> > > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > > >> >> >>
> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > > >> >> >> I'm
> > > > >> >> >> asking for everything here.  Objective is to have something that
> > > > >> >> >> could
> > > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > > >> >> >> a
> > > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > > >> >> >>
> > > > >> >> >> jim
> > > > >> >> >> >
> > > > >> >> >> > ,___
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > ------------------------------------
> > > > >> >> >
> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >>
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> > ------------------------------------
> > > > >> >
> > > > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >>
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2575
Date: Thu, 18 Oct 2012 02:57:08 -0000
From: "Androgenoide"
Subject: Re: Typical 1500 series failure modes?

Hey!  No problem.  It will be a couple days but Friday or Saturday I'll break it open and image the disks.   If we still have space I'll upload it to the files section... If not, I'm sure they'll fit in an email attachment.






--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> That's wonderful!
>
> I got my MiniSCSI EPP off ebay, but it didn't have the software at all. I have obtained SCSIworks disks, but I am not sure if those have the same programs. I would like to ontain the software on those disks if possible. Thanks.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Androgenoide" <androgenoide@> wrote:
> >
> > I found one of those in a thrift store just a couple weeks ago... an Adaptec MiniSCSI EPP still in the original box with the envelope of driver disks unopened.   Haven't tried to use it yet but, from skimming through the manual, it seems to have some limits on the types of devices it works with.
> >
> >
> >
> >
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
> > >
> > > The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > > > As I might have mentioned in another post, if I could get
> > > > another PC to appear as a mounted drive to the GRiD I'd be in
> > > > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > > > Any ideas there?
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >
> > > > > Good luck with the Backpack stuff.
> > > > >
> > > > > There's a book called "Hot Links", which was produced by the same people
> > > > > that produced LapLink.  In the back of the book is a disk with programs that
> > > > > will let you transfer files, either via null modem cable or LapLink cable.
> > > > > I doubt that the book is still in print, but it might be something to look
> > > > > for.  If you get the book without the disk, let me know, and I'll get you
> > > > > the software.  I can't remember if it lets you map the host drive to the
> > > > > client machine, but that would be cool, if it does that.
> > > > >
> > > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > > "She said it was either her or the ham radio.  Over."
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "techtalklive@" <doug@>
> > > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > > > Sent: Monday, October 15, 2012 10:47 PM
> > > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >
> > > > >
> > > > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > > > Yes checking out Backpacks now. Just collected drivers from
> > > > > > around the web for them and am checking on ebay for
> > > > > > equipment.  I suspect they will work.
> > > > > >
> > > > > > I thought I might take a look to see if there was parallel port
> > > > > > software that would work like "laplink" to tether to another PC
> > > > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > > > the 1530.
> > > > > >
> > > > > > That would be cool... and avoid purchasing old hardware.
> > > > > >
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > > >>
> > > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > > > >> you
> > > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > > > >>
> > > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > > >> "She said it was either her or the ham radio.  Over."
> > > > > >>
> > > > > >>
> > > > > >> ----- Original Message -----
> > > > > >> From: "techtalklive@" <doug@>
> > > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > > >>
> > > > > >>
> > > > > >> >
> > > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > > > >> > driver
> > > > > >> > support.
> > > > > >> > Other similar devices don't seem to be on the used market right not.
> > > > > >> > I'm also considering a parallel based disk drive at this point.
> > > > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > > > >> > didn't
> > > > > >> > actually run the numbers.
> > > > > >> > DC
> > > > > >> >
> > > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > > >> >>
> > > > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > > > >> >> 16550AFN
> > > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > > > >> >> have
> > > > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > > > > >> >> parallel
> > > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > > > >> >> even
> > > > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > > > >> >>
> > > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > > >> >> "She said it was either her or the ham radio.  Over."
> > > > > >> >>
> > > > > >> >>
> > > > > >> >> ----- Original Message -----
> > > > > >> >> From: "Androgenoide" <androgenoide@>
> > > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > > >> >>
> > > > > >> >>
> > > > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > > > >> >> > Ethernet adapter that will work through either the serial or
> > > > > >> >> > parallel
> > > > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > > > >> >> > the
> > > > > >> >> > time.   I've got a serial device server now that would probably work
> > > > > >> >> > too
> > > > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > > > >> >> > to
> > > > > >> >> > see
> > > > > >> >> > what would be required.   Either of those solutions would be limited
> > > > > >> >> > by
> > > > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > > > >> >> > speeds
> > > > > >> >> > are out of the question!
> > > > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > > > >> >> > also
> > > > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > > > >> >> > internet
> > > > > >> >> > connection... (if you still have access to a dialup service... if
> > > > > >> >> > not,
> > > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > > > >> >> > few
> > > > > >> >> > hours at a time).
> > > > > >> >> >
> > > > > >> >> > Generally speaking, if an old machine has either a serial or
> > > > > >> >> > parallel
> > > > > >> >> > port
> > > > > >> >> > and you can get it to boot into DOS, there is always a way to
> > > > > >> >> > transfer
> > > > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > > > >> >> > another
> > > > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > > > >> >> > lot
> > > > > >> >> > of
> > > > > >> >> > file transfer programs out there, from Kermit to the original
> > > > > >> >> > version
> > > > > >> >> > of
> > > > > >> >> > Procomm that will fit on a single floppy.
> > > > > >> >> >
> > > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > > > >> >> > full
> > > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > > > >> >> > tricky
> > > > > >> >> > and
> > > > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > > > >> >> > kind
> > > > > >> >> > of
> > > > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > > > >> >> > a
> > > > > >> >> > single floppy and run on systems with limited resources
> > > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > > > >> >> > one
> > > > > >> >> > seems to want 4MB of RAM.
> > > > > >> >> >
> > > > > >> >> > There are plenty of people on the web who have too much time on
> > > > > >> >> > their
> > > > > >> >> > hands and are still playing with machines even older than the
> > > > > >> >> > Grid...
> > > > > >> >> > You
> > > > > >> >> > can still buy new after-market accessories for Commodores, for
> > > > > >> >> > example,
> > > > > >> >> > so
> > > > > >> >> > don't assume that there are no new solutions to old problems.
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > > > >> >> >>
> > > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > > > >> >> >> >
> > > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > > > >> >> >> > port
> > > > > >> >> >> > to
> > > > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > > > >> >> >> > made
> > > > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > > > >> >> >> > And,
> > > > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > > > >> >> >> > browser
> > > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > > > >> >> >> > say
> > > > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > > > >> >> >> > Go
> > > > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > > > >> >> >> > a
> > > > > >> >> >> > while.
> > > > > >> >> >> >
> > > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > > > >> >> >> > last
> > > > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > > > >> >> >> > force
> > > > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > > > >> >> >> > unless
> > > > > >> >> >> > it
> > > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > > > >> >> >> > installed
> > > > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > > > >> >> >> > one
> > > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > > > >> >> >> > half
> > > > > >> >> >> > hour to boot.
> > > > > >> >> >> >
> > > > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > > > >> >> >> > else
> > > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > > > >> >> >> > with
> > > > > >> >> >> > a
> > > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > > > >> >> >> > OS/browser
> > > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > > > >> >> >> >
> > > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > > > >> >> >> > <doug@> wrote:
> > > > > >> >> >> > >
> > > > > >> >> >> > > Like the hack job? :O
> > > > > >> >> >> > >
> > > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > > > >> >> >> > > screes?
> > > > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > > > >> >> >> > > fix it?) or look for a replacement?
> > > > > >> >> >> > >
> > > > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > > > >> >> >> > > the point there.
> > > > > >> >> >> > >
> > > > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > > > >> >> >> > > I'd need the LAN hardware I guess.
> > > > > >> >> >> > > Any other ideas?
> > > > > >> >> >> > >
> > > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > > > >> >> >> > > contacts
> > > > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > > > >> >> >> > > metal.
> > > > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > > > >> >> >> > > the
> > > > > >> >> >> > > radial DC jack. Strange?
> > > > > >> >> >> > >
> > > > > >> >> >> > > DC
> > > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > > >> >> >> > <Jeriddian@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Great job, Doug!
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > > > > >> >> >> > > > beautiful
> > > > > >> >> >> > machines? And yep, that's the way it works.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > > > >> >> >> > > > registers
> > > > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > > > >> >> >> > the
> > > > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > > > >> >> >> > simply
> > > > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > > > >> >> >> > everything's hunky-dory.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > > > >> >> >> > > > upgrade
> > > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > > > >> >> >> > Great
> > > > > >> >> >> > to
> > > > > >> >> >> > hear the HDD is good too.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > > > >> >> >> > > > that
> > > > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > > > >> >> >> > 1520,
> > > > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > > > >> >> >> > shipping.
> > > > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > > > >> >> >> > that
> > > > > >> >> >> > was
> > > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > > > >> >> >> > discover
> > > > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > > > >> >> >> > had
> > > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > > > >> >> >> > this
> > > > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > > > >> >> >> > a
> > > > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > > > >> >> >> > But
> > > > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > > > >> >> >> > The
> > > > > >> >> >> > original owner of this machine definitely took care of it.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Phil
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > > > >> >> >> > > > > to
> > > > > >> >> >> > > > > a
> > > > > >> >> >> > convenient place for the battery. Upon power up it said
> > > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > > > >> >> >> > > > > wrong
> > > > > >> >> >> > > > > with
> > > > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > > > >> >> >> > > > > POST
> > > > > >> >> >> > and Autoexec.
> > > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > > >> >> >> > > > > Now it boots cleanly.
> > > > > >> >> >> > > > > Has Lotus123 on the HD.
> > > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > > > > >> >> >> > > > > everything
> > > > > >> >> >> > > > > works.
> > > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > > > >> >> >> > > > > RAM,
> > > > > >> >> >> > > > > a
> > > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > >
> > > > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > > > >> >> >> > > > > > X2
> > > > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > > > >> >> >> > > > > > make sure the rest of it is still good.
> > > > > >> >> >> > > > > >
> > > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > > > >> >> >> > <andrebakken@> wrote:
> > > > > >> >> >> > > > > > >
> > > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > > > >> >> >> > > > > > > difference.
> > > > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > > > >> >> >> > directly
> > > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > > > >> >> >> > > > > > > will
> > > > > >> >> >> > radiate more interference/noise out onto the mains.
> > > > > >> >> >> > > > > > >
> > > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > > > There are two in there that are the same.
> > > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > > > >> >> >> > > > > > > > I have them out already.
> > > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > > > DC
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > > >> >> >> > <Jeriddian@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > Good Find, DC
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > > > >> >> >> > and
> > > > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > > > >> >> >> > them
> > > > > >> >> >> > for you.
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > Phil
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > > > >> >> >> > > > > > > > > > in
> > > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > > > >> >> >> > replace both
> > > > > >> >> >> > > > > > > > > > of course.
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > DC
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@...m
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > > > >> >> >> > > > > > > > > > > that
> > > > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > > > >> >> >> > > > > > > > > > > supply
> > > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > > > >> >> >> > (unfortunately,
> > > > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > > > >> >> >> > > > > > > > > > > isolation!)
> > > > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > > > >> >> >> > > > > > > > > > > manuals
> > > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > > > >> >> >> > > > > > > > > > > pointers
> > > > > >> >> >> > form
> > > > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > > > >> >> >> > > > > > > > > > > dead
> > > > > >> >> >> > diagnosis.
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > > > >> >> >> > > > > > > > > > > 1530
> > > > > >> >> >> > > > > > > > > > > will
> > > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > > > >> >> >> > > > > > > > > > > DC
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > >
> > > > > >> >> >> > > > > >
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > >
> > > > > >> >> >> > >
> > > > > >> >> >> >
> > > > > >> >> >>
> > > > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > > > >> >> >> that
> > > > > >> >> >> can be easily had to run say serial (probably ppp) from something
> > > > > >> >> >> like
> > > > > >> >> >> a
> > > > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > > > >> >> >> and a
> > > > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > > > >> >> >> networking
> > > > > >> >> >> I forget.
> > > > > >> >> >>
> > > > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > > > >> >> >> equation,
> > > > > >> >> >> but I don' t have any references right now over a dos stack.
> > > > > >> >> >>
> > > > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > > > >> >> >> better,
> > > > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > > > >> >> >>
> > > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > > > >> >> >> I'm
> > > > > >> >> >> asking for everything here.  Objective is to have something that
> > > > > >> >> >> could
> > > > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > > > >> >> >> a
> > > > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > > > >> >> >>
> > > > > >> >> >> jim
> > > > > >> >> >> >
> > > > > >> >> >> > ,___
> > > > > >> >> >> >
> > > > > >> >> >>
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> > ------------------------------------
> > > > > >> >> >
> > > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >>
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> > ------------------------------------
> > > > > >> >
> > > > > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >>
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
> > > > > >
> > > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2577
Date: Thu, 18 Oct 2012 04:19:51 -0000
From: "techtalklive@..."
Subject: Best GRID 1530 Processor

Revitalizing the 1530 GRiD got me looking into my stash of
old parts. First I found a '387. Put it in, it works.
Then, almost forgetting the 486 history, I found
a TI486DLC. So that's a 486 in 386 pinout with improved
internals and a 1k cache. So that got me thinking, what would
be the best in class 386 replacement...
So far I get that the answer is a TI486SXL-50.

5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
Needs a dos sys file to enable the cache at boot.

Concur?

I don't suppose there is much hope in increasing the clocks
around the MB...

Other optimizing ideas?

Yahoo! Message number: 2578
Date: Thu, 18 Oct 2012 10:39:13 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset="UTF-8"

If you made the leads long enough to lay the SIMMs over on their side, and insulated them so that they wouldn't short anything out, would you have any lead dress problems, such as EMI/RFI, stray capacitance or inductance, etc.?  And, if so, wonder if installing ferrite beads on the leads would help.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message -----
From: Shawnerz
To: rugrid-laptop@yahoogroups.com
Sent: Wednesday, October 17, 2012 12:52 PM
Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?




IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.  Once I soldered the pins on, the module height would not allow the cover to go on.
Your results may vary,
-Shawn



-------- Original message --------
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
From: "techtalklive@..." <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?




Well that sounds promising.  The only thing that would
top that would be a native SCSI attached to the bus connectors
in the accessory port.  A ParPort one would do in the meantime.
Thanks!

I'm thinking of moding some SIMM chips to go in the SIPP sockets.
Anyone know the mem speed?  Hate to take the thing apart right
now to find out.
Thanks!

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
>
> The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > As I might have mentioned in another post, if I could get
> > another PC to appear as a mounted drive to the GRiD I'd be in
> > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > Any ideas there?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >
> > > Good luck with the Backpack stuff.
> > >
> > > There's a book called "Hot Links", which was produced by the same people
> > > that produced LapLink.  In the back of the book is a disk with programs that
> > > will let you transfer files, either via null modem cable or LapLink cable.
> > > I doubt that the book is still in print, but it might be something to look
> > > for.  If you get the book without the disk, let me know, and I'll get you
> > > the software.  I can't remember if it lets you map the host drive to the
> > > client machine, but that would be cool, if it does that.
> > >
> > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > "She said it was either her or the ham radio.  Over."
> > >
> > >
> > > ----- Original Message -----
> > > From: "techtalklive@" <doug@>
> > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > Sent: Monday, October 15, 2012 10:47 PM
> > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >
> > >
> > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > Yes checking out Backpacks now. Just collected drivers from
> > > > around the web for them and am checking on ebay for
> > > > equipment.  I suspect they will work.
> > > >
> > > > I thought I might take a look to see if there was parallel port
> > > > software that would work like "laplink" to tether to another PC
> > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > the 1530.
> > > >
> > > > That would be cool... and avoid purchasing old hardware.
> > > >
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >>
> > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > >> you
> > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > >>
> > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> "She said it was either her or the ham radio.  Over."
> > > >>
> > > >>
> > > >> ----- Original Message -----
> > > >> From: "techtalklive@" <doug@>
> > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >>
> > > >>
> > > >> >
> > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > >> > driver
> > > >> > support.
> > > >> > Other similar devices don't seem to be on the used market right not.
> > > >> > I'm also considering a parallel based disk drive at this point.
> > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > >> > didn't
> > > >> > actually run the numbers.
> > > >> > DC
> > > >> >
> > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >> >>
> > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > >> >> 16550AFN
> > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > >> >> have
> > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > > >> >> parallel
> > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > >> >> even
> > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > >> >>
> > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > >> >> "She said it was either her or the ham radio.  Over."
> > > >> >>
> > > >> >>
> > > >> >> ----- Original Message -----
> > > >> >> From: "Androgenoide" <androgenoide@>
> > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >> >>
> > > >> >>
> > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > >> >> > Ethernet adapter that will work through either the serial or
> > > >> >> > parallel
> > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > >> >> > the
> > > >> >> > time.   I've got a serial device server now that would probably work
> > > >> >> > too
> > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > >> >> > to
> > > >> >> > see
> > > >> >> > what would be required.   Either of those solutions would be limited
> > > >> >> > by
> > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > >> >> > speeds
> > > >> >> > are out of the question!
> > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > >> >> > also
> > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > >> >> > internet
> > > >> >> > connection... (if you still have access to a dialup service... if
> > > >> >> > not,
> > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > >> >> > few
> > > >> >> > hours at a time).
> > > >> >> >
> > > >> >> > Generally speaking, if an old machine has either a serial or
> > > >> >> > parallel
> > > >> >> > port
> > > >> >> > and you can get it to boot into DOS, there is always a way to
> > > >> >> > transfer
> > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > >> >> > another
> > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > >> >> > lot
> > > >> >> > of
> > > >> >> > file transfer programs out there, from Kermit to the original
> > > >> >> > version
> > > >> >> > of
> > > >> >> > Procomm that will fit on a single floppy.
> > > >> >> >
> > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > >> >> > full
> > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > >> >> > tricky
> > > >> >> > and
> > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > >> >> > kind
> > > >> >> > of
> > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > >> >> > a
> > > >> >> > single floppy and run on systems with limited resources
> > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > >> >> > one
> > > >> >> > seems to want 4MB of RAM.
> > > >> >> >
> > > >> >> > There are plenty of people on the web who have too much time on
> > > >> >> > their
> > > >> >> > hands and are still playing with machines even older than the
> > > >> >> > Grid...
> > > >> >> > You
> > > >> >> > can still buy new after-market accessories for Commodores, for
> > > >> >> > example,
> > > >> >> > so
> > > >> >> > don't assume that there are no new solutions to old problems.
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > >> >> >>
> > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > >> >> >> >
> > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > >> >> >> > port
> > > >> >> >> > to
> > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > >> >> >> > made
> > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > >> >> >> > And,
> > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > >> >> >> > browser
> > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > >> >> >> > say
> > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > >> >> >> > Go
> > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > >> >> >> > a
> > > >> >> >> > while.
> > > >> >> >> >
> > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > >> >> >> > last
> > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > >> >> >> > force
> > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > >> >> >> > unless
> > > >> >> >> > it
> > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > >> >> >> > installed
> > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > >> >> >> > one
> > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > >> >> >> > half
> > > >> >> >> > hour to boot.
> > > >> >> >> >
> > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > >> >> >> > else
> > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > >> >> >> > with
> > > >> >> >> > a
> > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > >> >> >> > OS/browser
> > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > >> >> >> >
> > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > >> >> >> > <doug@> wrote:
> > > >> >> >> > >
> > > >> >> >> > > Like the hack job? :O
> > > >> >> >> > >
> > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > >> >> >> > > screes?
> > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > >> >> >> > > fix it?) or look for a replacement?
> > > >> >> >> > >
> > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > >> >> >> > > the point there.
> > > >> >> >> > >
> > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > >> >> >> > > I'd need the LAN hardware I guess.
> > > >> >> >> > > Any other ideas?
> > > >> >> >> > >
> > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > >> >> >> > > contacts
> > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > >> >> >> > > metal.
> > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > >> >> >> > > the
> > > >> >> >> > > radial DC jack. Strange?
> > > >> >> >> > >
> > > >> >> >> > > DC
> > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > >
> > > >> >> >> > > > Great job, Doug!
> > > >> >> >> > > >
> > > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > > >> >> >> > > > beautiful
> > > >> >> >> > machines? And yep, that's the way it works.
> > > >> >> >> > > >
> > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > >> >> >> > > > registers
> > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > >> >> >> > the
> > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > >> >> >> > simply
> > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > >> >> >> > everything's hunky-dory.
> > > >> >> >> > > >
> > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > >> >> >> > > > upgrade
> > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > >> >> >> > Great
> > > >> >> >> > to
> > > >> >> >> > hear the HDD is good too.
> > > >> >> >> > > >
> > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > >> >> >> > > > that
> > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > >> >> >> > 1520,
> > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > >> >> >> > shipping.
> > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > >> >> >> > that
> > > >> >> >> > was
> > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > >> >> >> > discover
> > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > >> >> >> > had
> > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > >> >> >> > this
> > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > >> >> >> > a
> > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > >> >> >> > But
> > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > >> >> >> > The
> > > >> >> >> > original owner of this machine definitely took care of it.
> > > >> >> >> > > >
> > > >> >> >> > > > Phil
> > > >> >> >> > > >
> > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > >
> > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > >> >> >> > > > > to
> > > >> >> >> > > > > a
> > > >> >> >> > convenient place for the battery. Upon power up it said
> > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > >> >> >> > > > > wrong
> > > >> >> >> > > > > with
> > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > >> >> >> > > > > POST
> > > >> >> >> > and Autoexec.
> > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > >> >> >> > > > > Now it boots cleanly.
> > > >> >> >> > > > > Has Lotus123 on the HD.
> > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > > >> >> >> > > > > everything
> > > >> >> >> > > > > works.
> > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > >> >> >> > > > > RAM,
> > > >> >> >> > > > > a
> > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > >> >> >> > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > >> >> >> > > > > > X2
> > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > >> >> >> > > > > > make sure the rest of it is still good.
> > > >> >> >> > > > > >
> > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > >> >> >> > <andrebakken@> wrote:
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > >> >> >> > > > > > > difference.
> > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > >> >> >> > directly
> > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > >> >> >> > > > > > > will
> > > >> >> >> > radiate more interference/noise out onto the mains.
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > There are two in there that are the same.
> > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > >> >> >> > > > > > > > I have them out already.
> > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > DC
> > > >> >> >> > > > > ; > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > >> >> >> > <Jeriddian@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Good Find, DC
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > >> >> >> > and
> > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > >> >> >> > them
> > > >> >> >> > for you.
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > Phil
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > >> >> >> > > > > > > > > > in
> > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > >> >> >> > replace both
> > > >> >> >> > > > > > > > > > of course.
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > DC
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > >> >> >> > wrote:
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > >> >> >> > > > > > > > > > > that
> > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > >> >> >> > > > > > > > > > > supply
> > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > >> >> >> > (unfortunately,
> > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > >> >> >> > > > > > > > > > > isolation!)
> > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > >> >> >> > > > > > > > > > > manuals
> > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > >> >> >> > > > > > > > > > > pointers
> > > >> >> >> > form
> > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > >> >> >> > > > > > > > > > > dead
> > > >> >> >> > diagnosis.
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > >> >> >> > > > > > > > > > > 1530
> > > >> >> >> > > > > > > > > > > will
> > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > >> >> >> > > > > > > > > > > DC
> > > >> >> >> > > > > > > > > > >
> > > >> >> >> > > > > > > > > >
> > > >> >> >> > > > > > > > >
> > > >> >> >> > > > > > > >
> > > >> >> >> > > > > > >
> > > >> >> >> > > > > >
> > > >> >> >> > > > >
> > > >> >> >> > > >
> > > >> >> >> > >
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > >> >> >> that
> > > >> >> >> can be easily had to run say serial (probably ppp) from something
> > > >> >> >> like
> > > >> >> >> a
> > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > >> >> >> and a
> > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > >> >> >> networking
> > > >> >> >> I forget.
> > > >> >> >>
> > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > >> >> >> equation,
> > > >> >> >> but I don' t have any references right now over a dos stack.
> > > >> >> >>
> > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > >> >> >> better,
> > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > >> >> >>
> > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > >> >> >> I'm
> > > >> >> >> asking for everything here.  Objective is to have something that
> > > >> >> >> could
> > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > >> >> >> a
> > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > >> >> >>
> > > >> >> >> jim
> > > >> >> >> >
> > > >> >> >> > ,___
> > > >> >> >> >
> > > >> >> >>
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > ------------------------------------
> > > >> >> >
> > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >>
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> > ------------------------------------
> > > >> >
> gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >> >
> > > >> >
> > > >> >
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > >
> > > >
> > > >
> > >
> >
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2579
Date: Fri, 19 Oct 2012 00:38:36 -0000
From: "Androgenoide"
Subject: Re: Typical 1500 series failure modes?

Grabbed a free moment and opened the driver disk envelope... It looks like it may be the same SCSIworks that you already have but...  I made self-extracting images of the two floppies, zipped them and uploaded them to the files section.
The manual looks like 162 pages, though, and I won't get around to scanning that right away.











--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> That's wonderful!
>
> I got my MiniSCSI EPP off ebay, but it didn't have the software at all. I have obtained SCSIworks disks, but I am not sure if those have the same programs. I would like to ontain the software on those disks if possible. Thanks.
> 
> Phil

Yahoo! Message number: 2580
Date: Fri, 19 Oct 2012 01:36:02 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Thanks so much, A

Much appreciated! I can wait on the manual for now.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Androgenoide" <androgenoide@...> wrote:
>
> Grabbed a free moment and opened the driver disk envelope... It looks like it may be the same SCSIworks that you already have but...  I made self-extracting images of the two floppies, zipped them and uploaded them to the files section.
> The manual looks like 162 pages, though, and I won't get around to scanning that right away.
>
>
>
>
>
>
>
>
>
> 
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > That's wonderful!
> >
> > I got my MiniSCSI EPP off ebay, but it didn't have the software at all. I have obtained SCSIworks disks, but I am not sure if those have the same programs. I would like to ontain the software on those disks if possible. Thanks.
> >
> > Phil
>

Yahoo! Message number: 2581
Date: Fri, 19 Oct 2012 01:41:38 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

There was a company that at one time made an adaptation for the GRiD's called paradox in which they made an adapter that fit into the pin slots (I think. I've never actually seen it, but this is what I heard) and into which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for this, but never found it.  That would be cool to find and use.

The problems with the memory adaptation is ther is very, very little room for the memory to fit. The MoBo was actually designed to fit the smallest RAM stick they made at the time. You have to use a low profile SIPP, one with no extra PC Board material off to the sides. You could try laying the wired SIMM's over, but I looked at trying to do that with high profile SIPP's and there really isn't any room to do that either. I think if someone coud come up with an adapter like the paradox I described that fit 2 4 MB sticks to run in the eight rows of holes, that would likely be the best answer.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>
> If you made the leads long enough to lay the SIMMs over on their side, and insulated them so that they wouldn't short anything out, would you have any lead dress problems, such as EMI/RFI, stray capacitance or inductance, etc.?  And, if so, wonder if installing ferrite beads on the leads would help.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio.  Over."
>
>
> ----- Original Message -----
> From: Shawnerz
> To: rugrid-laptop@yahoogroups.com
> Sent: Wednesday, October 17, 2012 12:52 PM
> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
> 
>
>
> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.  Once I soldered the pins on, the module height would not allow the cover to go on.
> Your results may vary,
> -Shawn
>
>
>
> -------- Original message --------
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> From: "techtalklive@..." <doug@...>
> To: RuGRiD-Laptop@yahoogroups.com
> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
>
>
> Well that sounds promising.  The only thing that would
> top that would be a native SCSI attached to the bus connectors
> in the accessory port.  A ParPort one would do in the meantime.
> Thanks!
>
> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> Anyone know the mem speed?  Hate to take the thing apart right
> now to find out.
> Thanks!
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
> >
> > The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > > As I might have mentioned in another post, if I could get
> > > another PC to appear as a mounted drive to the GRiD I'd be in
> > > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > > Any ideas there?
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > >
> > > > Good luck with the Backpack stuff.
> > > >
> > > > There's a book called "Hot Links", which was produced by the same people 
> > > > that produced LapLink.  In the back of the book is a disk with programs that
> > > > will let you transfer files, either via null modem cable or LapLink cable.
> > > > I doubt that the book is still in print, but it might be something to look
> > > > for.  If you get the book without the disk, let me know, and I'll get you
> > > > the software.  I can't remember if it lets you map the host drive to the
> > > > client machine, but that would be cool, if it does that.
> > > >
> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > "She said it was either her or the ham radio.  Over."
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "techtalklive@" <doug@>
> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > > Sent: Monday, October 15, 2012 10:47 PM
> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > >
> > > >
> > > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > > Yes checking out Backpacks now. Just collected drivers from
> > > > > around the web for them and am checking on ebay for
> > > > > equipment.  I suspect they will work.
> > > > >
> > > > > I thought I might take a look to see if there was parallel port
> > > > > software that would work like "laplink" to tether to another PC
> > > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > > the 1530.
> > > > >
> > > > > That would be cool... and avoid purchasing old hardware.
> > > > >
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >>
> > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > > >> you
> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > > >>
> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> "She said it was either her or the ham radio.  Over."
> > > > >>
> > > > >>
> > > > >> ----- Original Message -----
> > > > >> From: "techtalklive@" <doug@>
> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >>
> > > > >>
> > > > >> >
> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > > >> > driver
> > > > >> > support.
> > > > >> > Other similar devices don't seem to be on the used market right not.
> > > > >> > I'm also considering a parallel based disk drive at this point.
> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > > >> > didn't
> > > > >> > actually run the numbers.
> > > > >> > DC
> > > > >> >
> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >> >>
> > > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > > >> >> 16550AFN
> > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > > >> >> have
> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > > > >> >> parallel
> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > > >> >> even
> > > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > > >> >>
> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > >> >> "She said it was either her or the ham radio.  Over."
> > > > >> >>
> > > > >> >>
> > > > >> >> ----- Original Message -----
> > > > >> >> From: "Androgenoide" <androgenoide@>
> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >> >>
> > > > >> >>
> > > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > > >> >> > Ethernet adapter that will work through either the serial or
> > > > >> >> > parallel
> > > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > > >> >> > the
> > > > >> >> > time.   I've got a serial device server now that would probably work
> > > > >> >> > too
> > > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > > >> >> > to
> > > > >> >> > see
> > > > >> >> > what would be required.   Either of those solutions would be limited
> > > > >> >> > by
> > > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > > >> >> > speeds
> > > > >> >> > are out of the question!
> > > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > > >> >> > also
> > > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > > >> >> > internet
> > > > >> >> > connection... (if you still have access to a dialup service... if
> > > > >> >> > not,
> > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > > >> >> > few
> > > > >> >> > hours at a time).
> > > > >> >> >
> > > > >> >> > Generally speaking, if an old machine has either a serial or
> > > > >> >> > parallel
> > > > >> >> > port
> > > > >> >> > and you can get it to boot into DOS, there is always a way to
> > > > >> >> > transfer
> > > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > > >> >> > another
> > > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > > >> >> > lot
> > > > >> >> > of
> > > > >> >> > file transfer programs out there, from Kermit to the original
> > > > >> >> > version
> > > > >> >> > of
> > > > >> >> > Procomm that will fit on a single floppy.
> > > > >> >> >
> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > > >> >> > full
> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > > >> >> > tricky
> > > > >> >> > and
> > > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > > >> >> > kind
> > > > >> >> > of
> > > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > > >> >> > a
> > > > >> >> > single floppy and run on systems with limited resources
> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > > >> >> > one
> > > > >> >> > seems to want 4MB of RAM.
> > > > >> >> >
> > > > >> >> > There are plenty of people on the web who have too much time on
> > > > >> >> > their
> > > > >> >> > hands and are still playing with machines even older than the
> > > > >> >> > Grid...
> > > > >> >> > You
> > > > >> >> > can still buy new after-market accessories for Commodores, for
> > > > >> >> > example,
> > > > >> >> > so
> > > > >> >> > don't assume that there are no new solutions to old problems.
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > > >> >> >>
> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > > >> >> >> >
> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > > >> >> >> > port
> > > > >> >> >> > to
> > > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > > >> >> >> > made
> > > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > > >> >> >> > And,
> > > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > > >> >> >> > browser
> > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > > >> >> >> > say
> > > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > > >> >> >> > Go
> > > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > > >> >> >> > a
> > > > >> >> >> > while.
> > > > >> >> >> >
> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > > >> >> >> > last
> > > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > > >> >> >> > force
> > > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > > >> >> >> > unless
> > > > >> >> >> > it
> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > > >> >> >> > installed
> > > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > > >> >> >> > one
> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > > >> >> >> > half
> > > > >> >> >> > hour to boot.
> > > > >> >> >> >
> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > > >> >> >> > else
> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > > >> >> >> > with
> > > > >> >> >> > a
> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > > >> >> >> > OS/browser
> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > > >> >> >> >
> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > > >> >> >> > <doug@> wrote:
> > > > >> >> >> > >
> > > > >> >> >> > > Like the hack job? :O
> > > > >> >> >> > >
> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > > >> >> >> > > screes?
> > > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > > >> >> >> > > fix it?) or look for a replacement?
> > > > >> >> >> > >
> > > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > > >> >> >> > > the point there.
> > > > >> >> >> > >
> > > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > > >> >> >> > > I'd need the LAN hardware I guess.
> > > > >> >> >> > > Any other ideas?
> > > > >> >> >> > >
> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > > >> >> >> > > contacts
> > > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > > >> >> >> > > metal.
> > > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > > >> >> >> > > the
> > > > >> >> >> > > radial DC jack. Strange?
> > > > >> >> >> > >
> > > > >> >> >> > > DC
> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > >
> > > > >> >> >> > > > Great job, Doug!
> > > > >> >> >> > > >
> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of these 
> > > > >> >> >> > > > beautiful
> > > > >> >> >> > machines? And yep, that's the way it works.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > > >> >> >> > > > registers
> > > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > > >> >> >> > the
> > > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > > >> >> >> > simply
> > > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > > >> >> >> > everything's hunky-dory.
> > > > >> >> >> > > >
> > > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > > >> >> >> > > > upgrade
> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > > >> >> >> > Great
> > > > >> >> >> > to
> > > > >> >> >> > hear the HDD is good too.
> > > > >> >> >> > > >
> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > > >> >> >> > > > that
> > > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > > >> >> >> > 1520,
> > > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > > >> >> >> > shipping.
> > > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > > >> >> >> > that
> > > > >> >> >> > was
> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > > >> >> >> > discover
> > > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > > >> >> >> > had
> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > > >> >> >> > this
> > > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > > >> >> >> > a
> > > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > > >> >> >> > But
> > > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > > >> >> >> > The
> > > > >> >> >> > original owner of this machine definitely took care of it.
> > > > >> >> >> > > >
> > > > >> >> >> > > > Phil
> > > > >> >> >> > > >
> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > > >> >> >> > > > > to
> > > > >> >> >> > > > > a
> > > > >> >> >> > convenient place for the battery. Upon power up it said
> > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > > >> >> >> > > > > wrong
> > > > >> >> >> > > > > with
> > > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > > >> >> >> > > > > POST
> > > > >> >> >> > and Autoexec.
> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > >> >> >> > > > > Now it boots cleanly.
> > > > >> >> >> > > > > Has Lotus123 on the HD.
> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd 
> > > > >> >> >> > > > > everything
> > > > >> >> >> > > > > works.
> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > > >> >> >> > > > > RAM,
> > > > >> >> >> > > > > a
> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > >> >> >> > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > > >> >> >> > > > > > X2
> > > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > > >> >> >> > > > > > make sure the rest of it is still good.
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > > >> >> >> > <andrebakken@> wrote:
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > > >> >> >> > > > > > > difference.
> > > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > > >> >> >> > directly
> > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > > >> >> >> > > > > > > will
> > > > >> >> >> > radiate more interference/noise out onto the mains.
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > There are two in there that are the same.
> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > > >> >> >> > > > > > > > I have them out already.
> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > DC
> > > > >> >> >> > > > > ; > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > >> >> >> > <Jeriddian@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Good Find, DC
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > > >> >> >> > and
> > > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > > >> >> >> > them
> > > > >> >> >> > for you.
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > Phil
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > > >> >> >> > > > > > > > > > in
> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > > >> >> >> > replace both
> > > > >> >> >> > > > > > > > > > of course.
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > >> >> >> > wrote:
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > > >> >> >> > > > > > > > > > > that
> > > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > > >> >> >> > > > > > > > > > > supply
> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > > >> >> >> > (unfortunately,
> > > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > > >> >> >> > > > > > > > > > > isolation!)
> > > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > > >> >> >> > > > > > > > > > > manuals
> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > > >> >> >> > > > > > > > > > > pointers
> > > > >> >> >> > form
> > > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > > >> >> >> > > > > > > > > > > dead
> > > > >> >> >> > diagnosis.
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > > >> >> >> > > > > > > > > > > 1530
> > > > >> >> >> > > > > > > > > > > will
> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > > >> >> >> > > > > > > > > > > DC
> > > > >> >> >> > > > > > > > > > >
> > > > >> >> >> > > > > > > > > >
> > > > >> >> >> > > > > > > > >
> > > > >> >> >> > > > > > > >
> > > > >> >> >> > > > > > >
> > > > >> >> >> > > > > >
> > > > >> >> >> > > > >
> > > > >> >> >> > > >
> > > > >> >> >> > >
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > > >> >> >> that
> > > > >> >> >> can be easily had to run say serial (probably ppp) from something
> > > > >> >> >> like
> > > > >> >> >> a
> > > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > > >> >> >> and a
> > > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > > >> >> >> networking
> > > > >> >> >> I forget.
> > > > >> >> >>
> > > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > > >> >> >> equation,
> > > > >> >> >> but I don' t have any references right now over a dos stack.
> > > > >> >> >>
> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > > >> >> >> better,
> > > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > > >> >> >>
> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > > >> >> >> I'm
> > > > >> >> >> asking for everything here.  Objective is to have something that
> > > > >> >> >> could
> > > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > > >> >> >> a
> > > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > > >> >> >>
> > > > >> >> >> jim
> > > > >> >> >> >
> > > > >> >> >> > ,___
> > > > >> >> >> >
> > > > >> >> >>
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >> > ------------------------------------
> > > > >> >> >
> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >> >
> > > > >> >> >
> > > > >> >> >
> > > > >> >>
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> > ------------------------------------
> > > > >> >
> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >>
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ------------------------------------
> > > > >
> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>

Yahoo! Message number: 2582
Date: Fri, 19 Oct 2012 05:16:21 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

I appreciate all the thoughts and experience on this.
The heads up on the dimensions will help me avoid buying
RAM, if I do, that might be too large.
I'll be taking mine apart again soon to have a careful
look at this.  I'll find those SIMM sockets I saw somewhere
and post a picture.  Maybe get some dimmensions and see if
the SIMM socket + module height fits the available height.
And look for the adapter you are talking about... but that's
a long shot.

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> There was a company that at one time made an adaptation for the GRiD's called paradox in which they made an adapter that fit into the pin slots (I think. I've never actually seen it, but this is what I heard) and into which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for this, but never found it.  That would be cool to find and use.
>
> The problems with the memory adaptation is ther is very, very little room for the memory to fit. The MoBo was actually designed to fit the smallest RAM stick they made at the time. You have to use a low profile SIPP, one with no extra PC Board material off to the sides. You could try laying the wired SIMM's over, but I looked at trying to do that with high profile SIPP's and there really isn't any room to do that either. I think if someone coud come up with an adapter like the paradox I described that fit 2 4 MB sticks to run in the eight rows of holes, that would likely be the best answer.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >
> > If you made the leads long enough to lay the SIMMs over on their side, and insulated them so that they wouldn't short anything out, would you have any lead dress problems, such as EMI/RFI, stray capacitance or inductance, etc.?  And, if so, wonder if installing ferrite beads on the leads would help.
> >
> > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > "She said it was either her or the ham radio.  Over."
> >
> >
> > ----- Original Message -----
> > From: Shawnerz
> > To: rugrid-laptop@yahoogroups.com
> > Sent: Wednesday, October 17, 2012 12:52 PM
> > Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >
> >
> >
> >
> > IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.  Once I soldered the pins on, the module height would not allow the cover to go on.
> > Your results may vary,
> > -Shawn
> >
> >
> >
> > -------- Original message --------
> > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > From: "techtalklive@" <doug@>
> > To: RuGRiD-Laptop@yahoogroups.com
> > CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >
> >
> > 
> >
> > Well that sounds promising.  The only thing that would
> > top that would be a native SCSI attached to the bus connectors
> > in the accessory port.  A ParPort one would do in the meantime.
> > Thanks!
> >
> > I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> > Anyone know the mem speed?  Hate to take the thing apart right
> > now to find out.
> > Thanks!
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo clocked down to 12.5 MHz.
> > >
> > > The problem with trying to access a higher capacity drive from the parallel port is that DOS is not capable of handling a large number of addresses. Of course, SCSI then is an option in doing that. I have a portable SCSI device which hooks into the parallel port made by Adaptec, called the Mini-SCSI which will allow the computer to connect to a larger drive such as a CDROM, large HDD, ZIP drive, or similar device by a SCSI-II connection. The SCSI connector has a parallel port on it that allows you to throughput a connection to your printer. I think that the maximum HDD capacity I can use with this thing is 2T.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > I used to have all that stuff.  Today I think I can run a dos program on the GRiD that talks to my trusty TotalCommander on another PC.
> > > > As I might have mentioned in another post, if I could get
> > > > another PC to appear as a mounted drive to the GRiD I'd be in
> > > > real fat city.  Then I'd have the machine wide open to the rest of the world.
> > > > Any ideas there?
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > >
> > > > > Good luck with the Backpack stuff.
> > > > >
> > > > > There's a book called "Hot Links", which was produced by the same people
> > > > > that produced LapLink.  In the back of the book is a disk with programs that
> > > > > will let you transfer files, either via null modem cable or LapLink cable.
> > > > > I doubt that the book is still in print, but it might be something to look
> > > > > for.  If you get the book without the disk, let me know, and I'll get you
> > > > > the software.  I can't remember if it lets you map the host drive to the
> > > > > client machine, but that would be cool, if it does that.
> > > > >
> > > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > > "She said it was either her or the ham radio.  Over."
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "techtalklive@" <doug@>
> > > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > > > > Sent: Monday, October 15, 2012 10:47 PM
> > > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > >
> > > > >
> > > > > > Its a 1530... clock is... I dont know 20Mhz?
> > > > > > Yes checking out Backpacks now. Just collected drivers from
> > > > > > around the web for them and am checking on ebay for
> > > > > > equipment.  I suspect they will work.
> > > > > >
> > > > > > I thought I might take a look to see if there was parallel port
> > > > > > software that would work like "laplink" to tether to another PC
> > > > > > but would make a directory/drive on the the host PC appear as a drive to
> > > > > > the 1530.
> > > > > >
> > > > > > That would be cool... and avoid purchasing old hardware.
> > > > > >
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > > >>
> > > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, it *might*
> > > > > >> make it, but it would be breathing hard.  As for parallel drives, see if
> > > > > >> you
> > > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that works off
> > > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > > > > >>
> > > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > > >> "She said it was either her or the ham radio.  Over."
> > > > > >>
> > > > > >>
> > > > > >> ----- Original Message -----
> > > > > >> From: "techtalklive@" <doug@>
> > > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > > >>
> > > > > >>
> > > > > >> >
> > > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has limited
> > > > > >> > driver
> > > > > >> > support.
> > > > > >> > Other similar devices don't seem to be on the used market right not.
> > > > > >> > I'm also considering a parallel based disk drive at this point.
> > > > > >> > Yes, ISA itself would have a hard time saturating 10bT I think... I
> > > > > >> > didn't
> > > > > >> > actually run the numbers.
> > > > > >> > DC
> > > > > >> >
> > > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > > > > >> >>
> > > > > >> >> I don't think I'd even bother with the serial port.  You might get
> > > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but even a
> > > > > >> >> 16550AFN
> > > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 UART, you
> > > > > >> >> have
> > > > > >> >> to slow it down with CTS/RTS handshaking.  I think the standard
> > > > > >> >> parallel
> > > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad faster with
> > > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a GRiD, but
> > > > > >> >> even
> > > > > >> >> if you could directly tie in to the ISA bus, it would be tough.
> > > > > >> >>
> > > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > > > > >> >> "She said it was either her or the ham radio.  Over."
> > > > > >> >>
> > > > > >> >>
> > > > > >> >> ----- Original Message -----
> > > > > >> >> From: "Androgenoide" <androgenoide@>
> > > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > > > > >> >>
> > > > > >> >>
> > > > > >> >> > The only real obstacle to DOS networking with the Grid is finding an
> > > > > >> >> > Ethernet adapter that will work through either the serial or
> > > > > >> >> > parallel
> > > > > >> >> > ports.   I used the Xircom on the parallel port because I had one at
> > > > > >> >> > the
> > > > > >> >> > time.   I've got a serial device server now that would probably work
> > > > > >> >> > too
> > > > > >> >> > but I've got too much going on at the moment to dig out a Grid just
> > > > > >> >> > to
> > > > > >> >> > see
> > > > > >> >> > what would be required.   Either of those solutions would be limited
> > > > > >> >> > by
> > > > > >> >> > the speed of the ports(and the Grid itself), of course.  Gigabit
> > > > > >> >> > speeds
> > > > > >> >> > are out of the question!
> > > > > >> >> > Another thought... The guy who put together the Techworm boot disk
> > > > > >> >> > also
> > > > > >> >> > had one called Networm, a single floppy that could do a dialup
> > > > > >> >> > internet
> > > > > >> >> > connection... (if you still have access to a dialup service... if
> > > > > >> >> > not,
> > > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy just a
> > > > > >> >> > few
> > > > > >> >> > hours at a time).
> > > > > >> >> >
> > > > > >> >> > Generally speaking, if an old machine has either a serial or
> > > > > >> >> > parallel
> > > > > >> >> > port
> > > > > >> >> > and you can get it to boot into DOS, there is always a way to 
> > > > > >> >> > transfer
> > > > > >> >> > files to another machine.   Even if it has no floppy you can use
> > > > > >> >> > another
> > > > > >> >> > DOS machine running Laplink.  If it does have a floppy there are a
> > > > > >> >> > lot
> > > > > >> >> > of
> > > > > >> >> > file transfer programs out there, from Kermit to the original
> > > > > >> >> > version
> > > > > >> >> > of
> > > > > >> >> > Procomm that will fit on a single floppy.
> > > > > >> >> >
> > > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of RAM... a
> > > > > >> >> > full
> > > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would be
> > > > > >> >> > tricky
> > > > > >> >> > and
> > > > > >> >> > would require some hardware tweaks even to make a slow machine...
> > > > > >> >> > kind
> > > > > >> >> > of
> > > > > >> >> > an extreme project.   I've heard of a Linux distro that will fit on
> > > > > >> >> > a
> > > > > >> >> > single floppy and run on systems with limited resources
> > > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but even that
> > > > > >> >> > one
> > > > > >> >> > seems to want 4MB of RAM.
> > > > > >> >> >
> > > > > >> >> > There are plenty of people on the web who have too much time on
> > > > > >> >> > their
> > > > > >> >> > hands and are still playing with machines even older than the
> > > > > >> >> > Grid...
> > > > > >> >> > You
> > > > > >> >> > can still buy new after-market accessories for Commodores, for
> > > > > >> >> > example,
> > > > > >> >> > so
> > > > > >> >> > don't assume that there are no new solutions to old problems.
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> > > > > >> >> >>
> > > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > > > > >> >> >> >
> > > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the parallel
> > > > > >> >> >> > port
> > > > > >> >> >> > to
> > > > > >> >> >> > a NIC... although I've been wondering lately if it might not have
> > > > > >> >> >> > made
> > > > > >> >> >> > equally good sense to use a device server on the serial port...?
> > > > > >> >> >> > And,
> > > > > >> >> >> > of course, the Arachne browser... not many choices for a DOS
> > > > > >> >> >> > browser
> > > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll have to
> > > > > >> >> >> > say
> > > > > >> >> >> > that it gave a whole new dimension of meaning to the word "slow."
> > > > > >> >> >> > Go
> > > > > >> >> >> > ahead, make a pot of tea while it's loading that page, it will be
> > > > > >> >> >> > a
> > > > > >> >> >> > while.
> > > > > >> >> >> >
> > > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a web page
> > > > > >> >> >> > last
> > > > > >> >> >> > week of a guy who was competing with a friend to see who could
> > > > > >> >> >> > force
> > > > > >> >> >> > Windows XP to run with the least resources. It won't install
> > > > > >> >> >> > unless
> > > > > >> >> >> > it
> > > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, once
> > > > > >> >> >> > installed
> > > > > >> >> >> > you can remove RAM and underclock the machine... He said he got
> > > > > >> >> >> > one
> > > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and it took a
> > > > > >> >> >> > half
> > > > > >> >> >> > hour to boot.
> > > > > >> >> >> >
> > > > > >> >> >> > I scored an HP 95LX a while back and someday, when I have nothing
> > > > > >> >> >> > else
> > > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get online
> > > > > >> >> >> > with
> > > > > >> >> >> > a
> > > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that Contiki
> > > > > >> >> >> > OS/browser
> > > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > > > > >> >> >> >
> > > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@"
> > > > > >> >> >> > <doug@> wrote:
> > > > > >> >> >> > >
> > > > > >> >> >> > > Like the hack job? :O
> > > > > >> >> >> > >
> > > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone swapped
> > > > > >> >> >> > > screes?
> > > > > >> >> >> > > Should I take the kbd apart and clean it (will that likely
> > > > > >> >> >> > > fix it?) or look for a replacement?
> > > > > >> >> >> > >
> > > > > >> >> >> > > So what can I do with this thing if I put more mem in it?
> > > > > >> >> >> > > Its all accessed funky through expaned mem methods, isn't it?
> > > > > >> >> >> > > I have a coprocessor I could put in this but not sure of
> > > > > >> >> >> > > the point there.
> > > > > >> >> >> > >
> > > > > >> >> >> > > I think I might like to accomplish getting it on the web.
> > > > > >> >> >> > > I'd need the LAN hardware I guess.
> > > > > >> >> >> > > Any other ideas?
> > > > > >> >> >> > >
> > > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two contact on
> > > > > >> >> >> > > it that mate inside the cavity. But one of the two spring
> > > > > >> >> >> > > contacts
> > > > > >> >> >> > > inside is "rubberized", so only the one contact hits metal to
> > > > > >> >> >> > > metal.
> > > > > >> >> >> > > So the P.S. only works using the cord to go from the P.S. into
> > > > > >> >> >> > > the
> > > > > >> >> >> > > radial DC jack. Strange?
> > > > > >> >> >> > >
> > > > > >> >> >> > > DC
> > > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > > >> >> >> > <Jeriddian@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Great job, Doug!
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Isn't it nice when you manage to salvage one of these
> > > > > >> >> >> > > > beautiful
> > > > > >> >> >> > machines? And yep, that's the way it works.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Once you restore battery power to the 1287A, the CMOS
> > > > > >> >> >> > > > registers
> > > > > >> >> >> > are again active. It's just that they're filled with nonsense, so
> > > > > >> >> >> > the
> > > > > >> >> >> > computer tells you the clock had stopped (which it did), and
> > > > > >> >> >> > simply
> > > > > >> >> >> > prompts you to reset the time. Once you do that and reboot,
> > > > > >> >> >> > everything's hunky-dory.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > You can probably find some more 256K sticks somewhere and
> > > > > >> >> >> > > > upgrade
> > > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 6.22.
> > > > > >> >> >> > Great
> > > > > >> >> >> > to
> > > > > >> >> >> > hear the HDD is good too.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > I recently got a great deal. There was a 1520 on sale on ebay
> > > > > >> >> >> > > > that
> > > > > >> >> >> > I looked at, however it was strange. It was definitely branded a
> > > > > >> >> >> > 1520,
> > > > > >> >> >> > and advertised that way, but the flip up screen said it was a 386
> > > > > >> >> >> > machine. I decided to get it, and it was only about $90 with
> > > > > >> >> >> > shipping.
> > > > > >> >> >> > When I got the machine, I was very excited when it began to post,
> > > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed the
> > > > > >> >> >> > configuration error 02 indicating the CMOS battery was dead. So I
> > > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A model, but
> > > > > >> >> >> > that
> > > > > >> >> >> > was
> > > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a spare.
> > > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off to
> > > > > >> >> >> > discover
> > > > > >> >> >> > that not only was this really a 386 machine (a 1530), but it also
> > > > > >> >> >> > had
> > > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 1287A and
> > > > > >> >> >> > this
> > > > > >> >> >> > solved the configuration error just fine. But alas, I didn't get
> > > > > >> >> >> > a
> > > > > >> >> >> > triple crown winner here. The Conner drive was definitely dead.
> > > > > >> >> >> > But
> > > > > >> >> >> > heck, getting another HDD is easy compared to the other benefits!
> > > > > >> >> >> > The
> > > > > >> >> >> > original owner of this machine definitely took care of it.
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > Phil
> > > > > >> >> >> > > >
> > > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran the wires
> > > > > >> >> >> > > > > to
> > > > > >> >> >> > > > > a
> > > > > >> >> >> > convenient place for the battery. Upon power up it said
> > > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> > > > > >> >> >> > > > > The "stopped" message threw me, I thought something was
> > > > > >> >> >> > > > > wrong
> > > > > >> >> >> > > > > with
> > > > > >> >> >> > > > > the chip. It took an F1 to continue and went right through
> > > > > >> >> >> > > > > POST
> > > > > >> >> >> > and Autoexec.
> > > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set the RTC.
> > > > > >> >> >> > > > > Now it boots cleanly.
> > > > > >> >> >> > > > > Has Lotus123 on the HD.
> > > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... page 2!
> > > > > >> >> >> > > > > The only remaining issue is that a few keys on the keyboard
> > > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external kbd
> > > > > >> >> >> > > > > everything
> > > > > >> >> >> > > > > works.
> > > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 with 1MB
> > > > > >> >> >> > > > > RAM,
> > > > > >> >> >> > > > > a
> > > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' system!
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > >
> > > > > >> >> >> > > > > > Thanks so much that was great info. I had no idea on the
> > > > > >> >> >> > > > > > X2
> > > > > >> >> >> > > > > > being a rating. May have to try it without them just to
> > > > > >> >> >> > > > > > make sure the rest of it is still good.
> > > > > >> >> >> > > > > >
> > > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "fullsizewagon"
> > > > > >> >> >> > <andrebakken@> wrote:
> > > > > >> >> >> > > > > > >
> > > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a big
> > > > > >> >> >> > > > > > > difference.
> > > > > >> >> >> > The X2 also signifies they're an enhanced type meant to go
> > > > > >> >> >> > directly
> > > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> > > > > >> >> >> > > > > > > The PSU will work without those cap's in place, but
> > > > > >> >> >> > > > > > > will
> > > > > >> >> >> > radiate more interference/noise out onto the mains.
> > > > > >> >> >> > > > > > >
> > > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > > > There are two in there that are the same.
> > > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square package.
> > > > > >> >> >> > > > > > > > The bottom is clear so you can see the radial shape.
> > > > > >> >> >> > > > > > > > I have them out already.
> > > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > > > DC
> > > > > >> >> >> > > > > ; > >
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > > > > >> >> >> > <Jeriddian@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > Good Find, DC
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > I guess they got burnt to the point where you can't
> > > > > >> >> >> > identify the capcity amount. Could you give me the output voltage
> > > > > >> >> >> > and
> > > > > >> >> >> > amperage? I'll look through my units and see if I can identify
> > > > > >> >> >> > them
> > > > > >> >> >> > for you.
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > Phil
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a failed cap
> > > > > >> >> >> > > > > > > > > > in
> > > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> > > > > >> >> >> > > > > > > > > > There appears to be two of the same caps, would
> > > > > >> >> >> > replace both
> > > > > >> >> >> > > > > > > > > > of course.
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > DC
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@>
> > > > > >> >> >> > wrote:
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > > I am considering tackling the repair of a 1530
> > > > > >> >> >> > > > > > > > > > > that
> > > > > >> >> >> > > > > > > > > > > does not respond to the power switch. The power
> > > > > >> >> >> > > > > > > > > > > supply
> > > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its fine
> > > > > >> >> >> > (unfortunately,
> > > > > >> >> >> > > > > > > > > > > that would have been an easy problem
> > > > > >> >> >> > > > > > > > > > > isolation!)
> > > > > >> >> >> > > > > > > > > > > So its something internal. I have the service
> > > > > >> >> >> > > > > > > > > > > manuals
> > > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get some
> > > > > >> >> >> > > > > > > > > > > pointers
> > > > > >> >> >> > form
> > > > > >> >> >> > > > > > > > > > > folks who have already performed cold stone
> > > > > >> >> >> > > > > > > > > > > dead
> > > > > >> >> >> > diagnosis.
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this very clean
> > > > > >> >> >> > > > > > > > > > > 1530
> > > > > >> >> >> > > > > > > > > > > will
> > > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > > > > >> >> >> > > > > > > > > > > DC
> > > > > >> >> >> > > > > > > > > > >
> > > > > >> >> >> > > > > > > > > >
> > > > > >> >> >> > > > > > > > >
> > > > > >> >> >> > > > > > > >
> > > > > >> >> >> > > > > > >
> > > > > >> >> >> > > > > >
> > > > > >> >> >> > > > >
> > > > > >> >> >> > > >
> > > > > >> >> >> > >
> > > > > >> >> >> >
> > > > > >> >> >>
> > > > > >> >> >> Since we are on the topic of TCP does anyone have a formula stashed
> > > > > >> >> >> that
> > > > > >> >> >> can be easily had to run say serial (probably ppp) from something
> > > > > >> >> >> like
> > > > > >> >> >> a
> > > > > >> >> >> small system like the raspberry pi serially to a system with dos
> > > > > >> >> >> and a
> > > > > >> >> >> stack?  It's been so long since I messed with dos environment
> > > > > >> >> >> networking
> > > > > >> >> >> I forget.
> > > > > >> >> >>
> > > > > >> >> >> I think windows of some sort had trumpet to handle part of the
> > > > > >> >> >> equation,
> > > > > >> >> >> but I don' t have any references right now over a dos stack.
> > > > > >> >> >>
> > > > > >> >> >> Probably something to do windows 3.1 or win95 / win98 would be
> > > > > >> >> >> better,
> > > > > >> >> >> but I don't know if the hardware here would be up to those os's.
> > > > > >> >> >>
> > > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be nice too.
> > > > > >> >> >> I'm
> > > > > >> >> >> asking for everything here.  Objective is to have something that
> > > > > >> >> >> could
> > > > > >> >> >> suck off or load a disk image with a floppy boot.  I suspect it was
> > > > > >> >> >> a
> > > > > >> >> >> difficult thing to get going in the day, though, and even wors now.
> > > > > >> >> >>
> > > > > >> >> >> jim
> > > > > >> >> >> >
> > > > > >> >> >> > ,___
> > > > > >> >> >> >
> > > > > >> >> >>
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> > ------------------------------------
> > > > > >> >> >
> > > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >> >
> > > > > >> >>
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> > ------------------------------------
> > > > > >> >
> > > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >>
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
> > > > > >
> > > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
>

Yahoo! Message number: 2583
Date: Fri, 19 Oct 2012 05:34:15 -0000
From: "techtalklive@..."
Subject: Backing up the GRiD!

Added a photo of transferring all the files form the GRiD to a PC.
Not such  a great action shot, but its cool that something is
communicating with the GRiD
and I'm getting all the contents safely archived.  They are not "as
delivered" contents but
historically interesting none the less.

Yahoo! Message number: 2584
Date: Fri, 19 Oct 2012 11:44:29 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Wow.  And, I suppose if you could find SIPPs from, say, Crucial or Corsair, 
they'd charge you a mint.  I bought a 32MB FP SIMM for the first laser 
printer I owned, and Crucial wanted about a buck and a half a meg.  Yeah, 
that Paradox adapter would be swell.  That may have gone the way of the $50 
card that American Megatrends used to make that would plug into any ISA slot 
and patch the BIOS so that you could use any size hard drive by any 
manufacturer.  Lots of good ideas like that, but they just sort of faded 
away.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "jeriddian" <Jeriddian@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Thursday, October 18, 2012 9:41 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


> There was a company that at one time made an adaptation for the GRiD's 
> called paradox in which they made an adapter that fit into the pin slots 
> (I think. I've never actually seen it, but this is what I heard) and into 
> which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for this, 
> but never found it.  That would be cool to find and use.
>
> The problems with the memory adaptation is ther is very, very little room 
> for the memory to fit. The MoBo was actually designed to fit the smallest 
> RAM stick they made at the time. You have to use a low profile SIPP, one 
> with no extra PC Board material off to the sides. You could try laying the 
> wired SIMM's over, but I looked at trying to do that with high profile 
> SIPP's and there really isn't any room to do that either. I think if 
> someone coud come up with an adapter like the paradox I described that fit 
> 2 4 MB sticks to run in the eight rows of holes, that would likely be the 
> best answer.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> If you made the leads long enough to lay the SIMMs over on their side, 
>> and insulated them so that they wouldn't short anything out, would you 
>> have any lead dress problems, such as EMI/RFI, stray capacitance or 
>> inductance, etc.?  And, if so, wonder if installing ferrite beads on the 
>> leads would help.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message ----- 
>> From: Shawnerz
>> To: rugrid-laptop@yahoogroups.com
>> Sent: Wednesday, October 17, 2012 12:52 PM
>> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>>
>>
>> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM. 
>> Once I soldered the pins on, the module height would not allow the cover 
>> to go on.
>> Your results may vary,
>> -Shawn
>>
>>
>>
>> -------- Original message --------
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> From: "techtalklive@..." <doug@...>
>> To: RuGRiD-Laptop@yahoogroups.com
>> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>>
>>
>> Well that sounds promising.  The only thing that would
>> top that would be a native SCSI attached to the bus connectors
>> in the accessory port.  A ParPort one would do in the meantime.
>> Thanks!
>>
>> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
>> Anyone know the mem speed?  Hate to take the thing apart right
>> now to find out.
>> Thanks!
>>
>> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
>> >
>> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked 
>> > down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo 
>> > clocked down to 12.5 MHz.
>> >
>> > The problem with trying to access a higher capacity drive from the 
>> > parallel port is that DOS is not capable of handling a large number of 
>> > addresses. Of course, SCSI then is an option in doing that. I have a 
>> > portable SCSI device which hooks into the parallel port made by 
>> > Adaptec, called the Mini-SCSI which will allow the computer to connect 
>> > to a larger drive such as a CDROM, large HDD, ZIP drive, or similar 
>> > device by a SCSI-II connection. The SCSI connector has a parallel port 
>> > on it that allows you to throughput a connection to your printer. I 
>> > think that the maximum HDD capacity I can use with this thing is 2T.
>> >
>> > Phil
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
>> > >
>> > > I used to have all that stuff.  Today I think I can run a dos program 
>> > > on the GRiD that talks to my trusty TotalCommander on another PC.
>> > > As I might have mentioned in another post, if I could get
>> > > another PC to appear as a mounted drive to the GRiD I'd be in
>> > > real fat city.  Then I'd have the machine wide open to the rest of 
>> > > the world.
>> > > Any ideas there?
>> > >
>> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> 
>> > > wrote:
>> > > >
>> > > > Good luck with the Backpack stuff.
>> > > >
>> > > > There's a book called "Hot Links", which was produced by the same 
>> > > > people
>> > > > that produced LapLink.  In the back of the book is a disk with 
>> > > > programs that
>> > > > will let you transfer files, either via null modem cable or LapLink 
>> > > > cable.
>> > > > I doubt that the book is still in print, but it might be something 
>> > > > to look
>> > > > for.  If you get the book without the disk, let me know, and I'll 
>> > > > get you
>> > > > the software.  I can't remember if it lets you map the host drive 
>> > > > to the
>> > > > client machine, but that would be cool, if it does that.
>> > > >
>> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> > > > "She said it was either her or the ham radio.  Over."
>> > > >
>> > > >
>> > > > ----- Original Message ----- 
>> > > > From: "techtalklive@" <doug@>
>> > > > To: <RuGRiD-Laptop@yahoogroups.com>
>> > > > Sent: Monday, October 15, 2012 10:47 PM
>> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> > > >
>> > > >
>> > > > > Its a 1530... clock is... I dont know 20Mhz?
>> > > > > Yes checking out Backpacks now. Just collected drivers from
>> > > > > around the web for them and am checking on ebay for
>> > > > > equipment.  I suspect they will work.
>> > > > >
>> > > > > I thought I might take a look to see if there was parallel port
>> > > > > software that would work like "laplink" to tether to another PC
>> > > > > but would make a directory/drive on the the host PC appear as a 
>> > > > > drive to
>> > > > > the 1530.
>> > > > >
>> > > > > That would be cool... and avoid purchasing old hardware.
>> > > > >
>> > > > >
>> > > > >
>> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> 
>> > > > > wrote:
>> > > > >>
>> > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz, 
>> > > > >> it *might*
>> > > > >> make it, but it would be breathing hard.  As for parallel 
>> > > > >> drives, see if
>> > > > >> you
>> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that 
>> > > > >> works off
>> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
>> > > > >>
>> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> > > > >> "She said it was either her or the ham radio.  Over."
>> > > > >>
>> > > > >>
>> > > > >> ----- Original Message ----- 
>> > > > >> From: "techtalklive@" <doug@>
>> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
>> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
>> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> > > > >>
>> > > > >>
>> > > > >> >
>> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has 
>> > > > >> > limited
>> > > > >> > driver
>> > > > >> > support.
>> > > > >> > Other similar devices don't seem to be on the used market 
>> > > > >> > right not.
>> > > > >> > I'm also considering a parallel based disk drive at this 
>> > > > >> > point.
>> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I 
>> > > > >> > think... I
>> > > > >> > didn't
>> > > > >> > actually run the numbers.
>> > > > >> > DC
>> > > > >> >
>> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" 
>> > > > >> > <n8euj@> wrote:
>> > > > >> >>
>> > > > >> >> I don't think I'd even bother with the serial port.  You 
>> > > > >> >> might get
>> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but 
>> > > > >> >> even a
>> > > > >> >> 16550AFN
>> > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450 
>> > > > >> >> UART, you
>> > > > >> >> have
>> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the 
>> > > > >> >> standard
>> > > > >> >> parallel
>> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad 
>> > > > >> >> faster with
>> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a 
>> > > > >> >> GRiD, but
>> > > > >> >> even
>> > > > >> >> if you could directly tie in to the ISA bus, it would be 
>> > > > >> >> tough.
>> > > > >> >>
>> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> > > > >> >> "She said it was either her or the ham radio.  Over."
>> > > > >> >>
>> > > > >> >>
>> > > > >> >> ----- Original Message ----- 
>> > > > >> >> From: "Androgenoide" <androgenoide@>
>> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
>> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure 
>> > > > >> >> modes?
>> > > > >> >>
>> > > > >> >>
>> > > > >> >> > The only real obstacle to DOS networking with the Grid is 
>> > > > >> >> > finding an
>> > > > >> >> > Ethernet adapter that will work through either the serial 
>> > > > >> >> > or
>> > > > >> >> > parallel
>> > > > >> >> > ports.   I used the Xircom on the parallel port because I 
>> > > > >> >> > had one at
>> > > > >> >> > the
>> > > > >> >> > time.   I've got a serial device server now that would 
>> > > > >> >> > probably work
>> > > > >> >> > too
>> > > > >> >> > but I've got too much going on at the moment to dig out a 
>> > > > >> >> > Grid just
>> > > > >> >> > to
>> > > > >> >> > see
>> > > > >> >> > what would be required.   Either of those solutions would 
>> > > > >> >> > be limited
>> > > > >> >> > by
>> > > > >> >> > the speed of the ports(and the Grid itself), of course. 
>> > > > >> >> > Gigabit
>> > > > >> >> > speeds
>> > > > >> >> > are out of the question!
>> > > > >> >> > Another thought... The guy who put together the Techworm 
>> > > > >> >> > boot disk
>> > > > >> >> > also
>> > > > >> >> > had one called Networm, a single floppy that could do a 
>> > > > >> >> > dialup
>> > > > >> >> > internet
>> > > > >> >> > connection... (if you still have access to a dialup 
>> > > > >> >> > service... if
>> > > > >> >> > not,
>> > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy 
>> > > > >> >> > just a
>> > > > >> >> > few
>> > > > >> >> > hours at a time).
>> > > > >> >> >
>> > > > >> >> > Generally speaking, if an old machine has either a serial 
>> > > > >> >> > or
>> > > > >> >> > parallel
>> > > > >> >> > port
>> > > > >> >> > and you can get it to boot into DOS, there is always a way 
>> > > > >> >> > to
>> > > > >> >> > transfer
>> > > > >> >> > files to another machine.   Even if it has no floppy you 
>> > > > >> >> > can use
>> > > > >> >> > another
>> > > > >> >> > DOS machine running Laplink.  If it does have a floppy 
>> > > > >> >> > there are a
>> > > > >> >> > lot
>> > > > >> >> > of
>> > > > >> >> > file transfer programs out there, from Kermit to the 
>> > > > >> >> > original
>> > > > >> >> > version
>> > > > >> >> > of
>> > > > >> >> > Procomm that will fit on a single floppy.
>> > > > >> >> >
>> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of 
>> > > > >> >> > RAM... a
>> > > > >> >> > full
>> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would 
>> > > > >> >> > be
>> > > > >> >> > tricky
>> > > > >> >> > and
>> > > > >> >> > would require some hardware tweaks even to make a slow 
>> > > > >> >> > machine...
>> > > > >> >> > kind
>> > > > >> >> > of
>> > > > >> >> > an extreme project.   I've heard of a Linux distro that 
>> > > > >> >> > will fit on
>> > > > >> >> > a
>> > > > >> >> > single floppy and run on systems with limited resources
>> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but 
>> > > > >> >> > even that
>> > > > >> >> > one
>> > > > >> >> > seems to want 4MB of RAM.
>> > > > >> >> >
>> > > > >> >> > There are plenty of people on the web who have too much 
>> > > > >> >> > time on
>> > > > >> >> > their
>> > > > >> >> > hands and are still playing with machines even older than 
>> > > > >> >> > the
>> > > > >> >> > Grid...
>> > > > >> >> > You
>> > > > >> >> > can still buy new after-market accessories for Commodores, 
>> > > > >> >> > for
>> > > > >> >> > example,
>> > > > >> >> > so
>> > > > >> >> > don't assume that there are no new solutions to old 
>> > > > >> >> > problems.
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
>> > > > >> >> >>
>> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> > > > >> >> >> >
>> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the 
>> > > > >> >> >> > parallel
>> > > > >> >> >> > port
>> > > > >> >> >> > to
>> > > > >> >> >> > a NIC... although I've been wondering lately if it might 
>> > > > >> >> >> > not have
>> > > > >> >> >> > made
>> > > > >> >> >> > equally good sense to use a device server on the serial 
>> > > > >> >> >> > port...?
>> > > > >> >> >> > And,
>> > > > >> >> >> > of course, the Arachne browser... not many choices for a 
>> > > > >> >> >> > DOS
>> > > > >> >> >> > browser
>> > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll 
>> > > > >> >> >> > have to
>> > > > >> >> >> > say
>> > > > >> >> >> > that it gave a whole new dimension of meaning to the 
>> > > > >> >> >> > word "slow."
>> > > > >> >> >> > Go
>> > > > >> >> >> > ahead, make a pot of tea while it's loading that page, 
>> > > > >> >> >> > it will be
>> > > > >> >> >> > a
>> > > > >> >> >> > while.
>> > > > >> >> >> >
>> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a 
>> > > > >> >> >> > web page
>> > > > >> >> >> > last
>> > > > >> >> >> > week of a guy who was competing with a friend to see who 
>> > > > >> >> >> > could
>> > > > >> >> >> > force
>> > > > >> >> >> > Windows XP to run with the least resources. It won't 
>> > > > >> >> >> > install
>> > > > >> >> >> > unless
>> > > > >> >> >> > it
>> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but, 
>> > > > >> >> >> > once
>> > > > >> >> >> > installed
>> > > > >> >> >> > you can remove RAM and underclock the machine... He said 
>> > > > >> >> >> > he got
>> > > > >> >> >> > one
>> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and 
>> > > > >> >> >> > it took a
>> > > > >> >> >> > half
>> > > > >> >> >> > hour to boot.
>> > > > >> >> >> >
>> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I 
>> > > > >> >> >> > have nothing
>> > > > >> >> >> > else
>> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get 
>> > > > >> >> >> > online
>> > > > >> >> >> > with
>> > > > >> >> >> > a
>> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that 
>> > > > >> >> >> > Contiki
>> > > > >> >> >> > OS/browser
>> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
>> > > > >> >> >> >
>> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> > > > >> >> >> > "techtalklive@"
>> > > > >> >> >> > <doug@> wrote:
>> > > > >> >> >> > >
>> > > > >> >> >> > > Like the hack job? :O
>> > > > >> >> >> > >
>> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone 
>> > > > >> >> >> > > swapped
>> > > > >> >> >> > > screes?
>> > > > >> >> >> > > Should I take the kbd apart and clean it (will that 
>> > > > >> >> >> > > likely
>> > > > >> >> >> > > fix it?) or look for a replacement?
>> > > > >> >> >> > >
>> > > > >> >> >> > > So what can I do with this thing if I put more mem in 
>> > > > >> >> >> > > it?
>> > > > >> >> >> > > Its all accessed funky through expaned mem methods, 
>> > > > >> >> >> > > isn't it?
>> > > > >> >> >> > > I have a coprocessor I could put in this but not sure 
>> > > > >> >> >> > > of
>> > > > >> >> >> > > the point there.
>> > > > >> >> >> > >
>> > > > >> >> >> > > I think I might like to accomplish getting it on the 
>> > > > >> >> >> > > web.
>> > > > >> >> >> > > I'd need the LAN hardware I guess.
>> > > > >> >> >> > > Any other ideas?
>> > > > >> >> >> > >
>> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two 
>> > > > >> >> >> > > contact on
>> > > > >> >> >> > > it that mate inside the cavity. But one of the two 
>> > > > >> >> >> > > spring
>> > > > >> >> >> > > contacts
>> > > > >> >> >> > > inside is "rubberized", so only the one contact hits 
>> > > > >> >> >> > > metal to
>> > > > >> >> >> > > metal.
>> > > > >> >> >> > > So the P.S. only works using the cord to go from the 
>> > > > >> >> >> > > P.S. into
>> > > > >> >> >> > > the
>> > > > >> >> >> > > radial DC jack. Strange?
>> > > > >> >> >> > >
>> > > > >> >> >> > > DC
>> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> > > > >> >> >> > <Jeriddian@>
>> > > > >> >> >> > wrote:
>> > > > >> >> >> > > >
>> > > > >> >> >> > > > Great job, Doug!
>> > > > >> >> >> > > >
>> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of 
>> > > > >> >> >> > > > these
>> > > > >> >> >> > > > beautiful
>> > > > >> >> >> > machines? And yep, that's the way it works.
>> > > > >> >> >> > > >
>> > > > >> >> >> > > > Once you restore battery power to the 1287A, the 
>> > > > >> >> >> > > > CMOS
>> > > > >> >> >> > > > registers
>> > > > >> >> >> > are again active. It's just that they're filled with 
>> > > > >> >> >> > nonsense, so
>> > > > >> >> >> > the
>> > > > >> >> >> > computer tells you the clock had stopped (which it did), 
>> > > > >> >> >> > and
>> > > > >> >> >> > simply
>> > > > >> >> >> > prompts you to reset the time. Once you do that and 
>> > > > >> >> >> > reboot,
>> > > > >> >> >> > everything's hunky-dory.
>> > > > >> >> >> > > >
>> > > > >> >> >> > > > You can probably find some more 256K sticks 
>> > > > >> >> >> > > > somewhere and
>> > > > >> >> >> > > > upgrade
>> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver. 
>> > > > >> >> >> > 6.22.
>> > > > >> >> >> > Great
>> > > > >> >> >> > to
>> > > > >> >> >> > hear the HDD is good too.
>> > > > >> >> >> > > >
>> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on 
>> > > > >> >> >> > > > sale on ebay
>> > > > >> >> >> > > > that
>> > > > >> >> >> > I looked at, however it was strange. It was definitely 
>> > > > >> >> >> > branded a
>> > > > >> >> >> > 1520,
>> > > > >> >> >> > and advertised that way, but the flip up screen said it 
>> > > > >> >> >> > was a 386
>> > > > >> >> >> > machine. I decided to get it, and it was only about $90 
>> > > > >> >> >> > with
>> > > > >> >> >> > shipping.
>> > > > >> >> >> > When I got the machine, I was very excited when it began 
>> > > > >> >> >> > to post,
>> > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed 
>> > > > >> >> >> > the
>> > > > >> >> >> > configuration error 02 indicating the CMOS battery was 
>> > > > >> >> >> > dead. So I
>> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A 
>> > > > >> >> >> > model, but
>> > > > >> >> >> > that
>> > > > >> >> >> > was
>> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a 
>> > > > >> >> >> > spare.
>> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off 
>> > > > >> >> >> > to
>> > > > >> >> >> > discover
>> > > > >> >> >> > that not only was this really a 386 machine (a 1530), 
>> > > > >> >> >> > but it also
>> > > > >> >> >> > had
>> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the 
>> > > > >> >> >> > 1287A and
>> > > > >> >> >> > this
>> > > > >> >> >> > solved the configuration error just fine. But alas, I 
>> > > > >> >> >> > didn't get
>> > > > >> >> >> > a
>> > > > >> >> >> > triple crown winner here. The Conner drive was 
>> > > > >> >> >> > definitely dead.
>> > > > >> >> >> > But
>> > > > >> >> >> > heck, getting another HDD is easy compared to the other 
>> > > > >> >> >> > benefits!
>> > > > >> >> >> > The
>> > > > >> >> >> > original owner of this machine definitely took care of 
>> > > > >> >> >> > it.
>> > > > >> >> >> > > >
>> > > > >> >> >> > > > Phil
>> > > > >> >> >> > > >
>> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> > > > >> >> >> > "techtalklive@" <doug@>
>> > > > >> >> >> > wrote:
>> > > > >> >> >> > > > >
>> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
>> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran 
>> > > > >> >> >> > > > > the wires
>> > > > >> >> >> > > > > to
>> > > > >> >> >> > > > > a
>> > > > >> >> >> > convenient place for the battery. Upon power up it said
>> > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
>> > > > >> >> >> > > > > The "stopped" message threw me, I thought 
>> > > > >> >> >> > > > > something was
>> > > > >> >> >> > > > > wrong
>> > > > >> >> >> > > > > with
>> > > > >> >> >> > > > > the chip. It took an F1 to continue and went right 
>> > > > >> >> >> > > > > through
>> > > > >> >> >> > > > > POST
>> > > > >> >> >> > and Autoexec.
>> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set 
>> > > > >> >> >> > > > > the RTC.
>> > > > >> >> >> > > > > Now it boots cleanly.
>> > > > >> >> >> > > > > Has Lotus123 on the HD.
>> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"... 
>> > > > >> >> >> > > > > page 2!
>> > > > >> >> >> > > > > The only remaining issue is that a few keys on the 
>> > > > >> >> >> > > > > keyboard
>> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external 
>> > > > >> >> >> > > > > kbd
>> > > > >> >> >> > > > > everything
>> > > > >> >> >> > > > > works.
>> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386 
>> > > > >> >> >> > > > > with 1MB
>> > > > >> >> >> > > > > RAM,
>> > > > >> >> >> > > > > a
>> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin' 
>> > > > >> >> >> > system!
>> > > > >> >> >> > > > >
>> > > > >> >> >> > > > >
>> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> > > > >> >> >> > "techtalklive@" <doug@>
>> > > > >> >> >> > wrote:
>> > > > >> >> >> > > > > >
>> > > > >> >> >> > > > > > Thanks so much that was great info. I had no 
>> > > > >> >> >> > > > > > idea on the
>> > > > >> >> >> > > > > > X2
>> > > > >> >> >> > > > > > being a rating. May have to try it without them 
>> > > > >> >> >> > > > > > just to
>> > > > >> >> >> > > > > > make sure the rest of it is still good.
>> > > > >> >> >> > > > > >
>> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> > > > >> >> >> > "fullsizewagon"
>> > > > >> >> >> > <andrebakken@> wrote:
>> > > > >> >> >> > > > > > >
>> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a 
>> > > > >> >> >> > > > > > > big
>> > > > >> >> >> > > > > > > difference.
>> > > > >> >> >> > The X2 also signifies they're an enhanced type meant to 
>> > > > >> >> >> > go
>> > > > >> >> >> > directly
>> > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
>> > > > >> >> >> > > > > > > The PSU will work without those cap's in 
>> > > > >> >> >> > > > > > > place, but
>> > > > >> >> >> > > > > > > will
>> > > > >> >> >> > radiate more interference/noise out onto the mains.
>> > > > >> >> >> > > > > > >
>> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> > > > >> >> >> > "techtalklive@" <doug@>
>> > > > >> >> >> > wrote:
>> > > > >> >> >> > > > > > > >
>> > > > >> >> >> > > > > > > > There are two in there that are the same.
>> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
>> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square 
>> > > > >> >> >> > > > > > > > package.
>> > > > >> >> >> > > > > > > > The bottom is clear so you can see the 
>> > > > >> >> >> > > > > > > > radial shape.
>> > > > >> >> >> > > > > > > > I have them out already.
>> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
>> > > > >> >> >> > > > > > > >
>> > > > >> >> >> > > > > > > > DC
>> > > > >> >> >> > > > > ; > >
>> > > > >> >> >> > > > > > > >
>> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> > > > >> >> >> > <Jeriddian@>
>> > > > >> >> >> > wrote:
>> > > > >> >> >> > > > > > > > >
>> > > > >> >> >> > > > > > > > > Good Find, DC
>> > > > >> >> >> > > > > > > > >
>> > > > >> >> >> > > > > > > > > I guess they got burnt to the point where 
>> > > > >> >> >> > > > > > > > > you can't
>> > > > >> >> >> > identify the capcity amount. Could you give me the 
>> > > > >> >> >> > output voltage
>> > > > >> >> >> > and
>> > > > >> >> >> > amperage? I'll look through my units and see if I can 
>> > > > >> >> >> > identify
>> > > > >> >> >> > them
>> > > > >> >> >> > for you.
>> > > > >> >> >> > > > > > > > >
>> > > > >> >> >> > > > > > > > > Phil
>> > > > >> >> >> > > > > > > > >
>> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> > > > >> >> >> > "techtalklive@" <doug@>
>> > > > >> >> >> > wrote:
>> > > > >> >> >> > > > > > > > > >
>> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a 
>> > > > >> >> >> > > > > > > > > > failed cap
>> > > > >> >> >> > > > > > > > > > in
>> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
>> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
>> > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
>> > > > >> >> >> > > > > > > > > > There appears to be two of the same 
>> > > > >> >> >> > > > > > > > > > caps, would
>> > > > >> >> >> > replace both
>> > > > >> >> >> > > > > > > > > > of course.
>> > > > >> >> >> > > > > > > > > >
>> > > > >> >> >> > > > > > > > > > DC
>> > > > >> >> >> > > > > > > > > >
>> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> > > > >> >> >> > "techtalklive@" <doug@>
>> > > > >> >> >> > wrote:
>> > > > >> >> >> > > > > > > > > > >
>> > > > >> >> >> > > > > > > > > > > I am considering tackling the repair 
>> > > > >> >> >> > > > > > > > > > > of a 1530
>> > > > >> >> >> > > > > > > > > > > that
>> > > > >> >> >> > > > > > > > > > > does not respond to the power switch. 
>> > > > >> >> >> > > > > > > > > > > The power
>> > > > >> >> >> > > > > > > > > > > supply
>> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its 
>> > > > >> >> >> > > > > > > > > > > fine
>> > > > >> >> >> > (unfortunately,
>> > > > >> >> >> > > > > > > > > > > that would have been an easy problem
>> > > > >> >> >> > > > > > > > > > > isolation!)
>> > > > >> >> >> > > > > > > > > > > So its something internal. I have the 
>> > > > >> >> >> > > > > > > > > > > service
>> > > > >> >> >> > > > > > > > > > > manuals
>> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get 
>> > > > >> >> >> > > > > > > > > > > some
>> > > > >> >> >> > > > > > > > > > > pointers
>> > > > >> >> >> > form
>> > > > >> >> >> > > > > > > > > > > folks who have already performed cold 
>> > > > >> >> >> > > > > > > > > > > stone
>> > > > >> >> >> > > > > > > > > > > dead
>> > > > >> >> >> > diagnosis.
>> > > > >> >> >> > > > > > > > > > >
>> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this 
>> > > > >> >> >> > > > > > > > > > > very clean
>> > > > >> >> >> > > > > > > > > > > 1530
>> > > > >> >> >> > > > > > > > > > > will
>> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
>> > > > >> >> >> > > > > > > > > > >
>> > > > >> >> >> > > > > > > > > > > Thanks in advance,
>> > > > >> >> >> > > > > > > > > > > DC
>> > > > >> >> >> > > > > > > > > > >
>> > > > >> >> >> > > > > > > > > >
>> > > > >> >> >> > > > > > > > >
>> > > > >> >> >> > > > > > > >
>> > > > >> >> >> > > > > > >
>> > > > >> >> >> > > > > >
>> > > > >> >> >> > > > >
>> > > > >> >> >> > > >
>> > > > >> >> >> > >
>> > > > >> >> >> >
>> > > > >> >> >>
>> > > > >> >> >> Since we are on the topic of TCP does anyone have a 
>> > > > >> >> >> formula stashed
>> > > > >> >> >> that
>> > > > >> >> >> can be easily had to run say serial (probably ppp) from 
>> > > > >> >> >> something
>> > > > >> >> >> like
>> > > > >> >> >> a
>> > > > >> >> >> small system like the raspberry pi serially to a system 
>> > > > >> >> >> with dos
>> > > > >> >> >> and a
>> > > > >> >> >> stack?  It's been so long since I messed with dos 
>> > > > >> >> >> environment
>> > > > >> >> >> networking
>> > > > >> >> >> I forget.
>> > > > >> >> >>
>> > > > >> >> >> I think windows of some sort had trumpet to handle part of 
>> > > > >> >> >> the
>> > > > >> >> >> equation,
>> > > > >> >> >> but I don' t have any references right now over a dos 
>> > > > >> >> >> stack.
>> > > > >> >> >>
>> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98 
>> > > > >> >> >> would be
>> > > > >> >> >> better,
>> > > > >> >> >> but I don't know if the hardware here would be up to those 
>> > > > >> >> >> os's.
>> > > > >> >> >>
>> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be 
>> > > > >> >> >> nice too.
>> > > > >> >> >> I'm
>> > > > >> >> >> asking for everything here.  Objective is to have 
>> > > > >> >> >> something that
>> > > > >> >> >> could
>> > > > >> >> >> suck off or load a disk image with a floppy boot.  I 
>> > > > >> >> >> suspect it was
>> > > > >> >> >> a
>> > > > >> >> >> difficult thing to get going in the day, though, and even 
>> > > > >> >> >> wors now.
>> > > > >> >> >>
>> > > > >> >> >> jim
>> > > > >> >> >> >
>> > > > >> >> >> > ,___
>> > > > >> >> >> >
>> > > > >> >> >>
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> > ------------------------------------
>> > > > >> >> >
>> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups 
>> > > > >> >> > Links
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >> >
>> > > > >> >>
>> > > > >> >
>> > > > >> >
>> > > > >> >
>> > > > >> >
>> > > > >> > ------------------------------------
>> > > > >> >
>> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups 
>> > Links
>> > > > >> >
>> > > > >> >
>> > > > >> >
>> > > > >>
>> > > > >
>> > > > >
>> > > > >
>> > > > >
>> > > > > ------------------------------------
>> > > > >
>> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> > > > >
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>>
>>
>>
>>
>> ------------------------------------
>>
>> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2585
Date: Sun, 21 Oct 2012 02:40:46 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

I'm going to take a shot at shoe-horning some low height 1MB SIMMs
in their.  Let ya'll know how it goes.
That Megatrends card sounds familiar; I suspect I worried about
drive support way back in the day.  Actually drive support
is also an issue with these 1530s.


--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>
> Wow.  And, I suppose if you could find SIPPs from, say, Crucial or Corsair,
> they'd charge you a mint.  I bought a 32MB FP SIMM for the first laser
> printer I owned, and Crucial wanted about a buck and a half a meg.  Yeah,
> that Paradox adapter would be swell.  That may have gone the way of the $50
> card that American Megatrends used to make that would plug into any ISA slot
> and patch the BIOS so that you could use any size hard drive by any
> manufacturer.  Lots of good ideas like that, but they just sort of faded
> away.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio.  Over."
>
>
> ----- Original Message -----
> From: "jeriddian" <Jeriddian@...>
> To: <RuGRiD-Laptop@yahoogroups.com>
> Sent: Thursday, October 18, 2012 9:41 PM
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
> > There was a company that at one time made an adaptation for the GRiD's
> > called paradox in which they made an adapter that fit into the pin slots
> > (I think. I've never actually seen it, but this is what I heard) and into
> > which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for this,
> > but never found it.  That would be cool to find and use.
> >
> > The problems with the memory adaptation is ther is very, very little room
> > for the memory to fit. The MoBo was actually designed to fit the smallest
> > RAM stick they made at the time. You have to use a low profile SIPP, one
> > with no extra PC Board material off to the sides. You could try laying the
> > wired SIMM's over, but I looked at trying to do that with high profile
> > SIPP's and there really isn't any room to do that either. I think if
> > someone coud come up with an adapter like the paradox I described that fit
> > 2 4 MB sticks to run in the eight rows of holes, that would likely be the
> > best answer.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >>
> >> If you made the leads long enough to lay the SIMMs over on their side,
> >> and insulated them so that they wouldn't short anything out, would you
> >> have any lead dress problems, such as EMI/RFI, stray capacitance or
> >> inductance, etc.?  And, if so, wonder if installing ferrite beads on the
> >> leads would help.
> >>
> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> "She said it was either her or the ham radio.  Over."
> >>
> >>
> >> ----- Original Message -----
> >> From: Shawnerz
> >> To: rugrid-laptop@yahoogroups.com
> >> Sent: Wednesday, October 17, 2012 12:52 PM
> >> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >>
> >>
> >>
> >>
> >> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.
> >> Once I soldered the pins on, the module height would not allow the cover
> >> to go on.
> >> Your results may vary,
> >> -Shawn
> >>
> >>
> >>
> >> -------- Original message --------
> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> From: "techtalklive@" <doug@>
> >> To: RuGRiD-Laptop@yahoogroups.com
> >> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >>
> >>
> >>
> >>
> >> Well that sounds promising.  The only thing that would
> >> top that would be a native SCSI attached to the bus connectors
> >> in the accessory port.  A ParPort one would do in the meantime.
> >> Thanks!
> >>
> >> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> >> Anyone know the mem speed?  Hate to take the thing apart right
> >> now to find out.
> >> Thanks!
> >>
> >> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >> >
> >> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked
> >> > down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the mobo
> >> > clocked down to 12.5 MHz.
> >> >
> >> > The problem with trying to access a higher capacity drive from the
> >> > parallel port is that DOS is not capable of handling a large number of
> >> > addresses. Of course, SCSI then is an option in doing that. I have a
> >> > portable SCSI device which hooks into the parallel port made by
> >> > Adaptec, called the Mini-SCSI which will allow the computer to connect
> >> > to a larger drive such as a CDROM, large HDD, ZIP drive, or similar
> >> > device by a SCSI-II connection. The SCSI connector has a parallel port
> >> > on it that allows you to throughput a connection to your printer. I
> >> > think that the maximum HDD capacity I can use with this thing is 2T.
> >> >
> >> > Phil
> >> >
> >> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >> > >
> >> > > I used to have all that stuff.  Today I think I can run a dos program
> >> > > on the GRiD that talks to my trusty TotalCommander on another PC.
> >> > > As I might have mentioned in another post, if I could get
> >> > > another PC to appear as a mounted drive to the GRiD I'd be in
> >> > > real fat city.  Then I'd have the machine wide open to the rest of
> >> > > the world.
> >> > > Any ideas there?
> >> > >
> >> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@>
> >> > > wrote:
> >> > > >
> >> > > > Good luck with the Backpack stuff.
> >> > > >
> >> > > > There's a book called "Hot Links", which was produced by the same
> >> > > > people
> >> > > > that produced LapLink.  In the back of the book is a disk with
> >> > > > programs that
> >> > > > will let you transfer files, either via null modem cable or LapLink
> >> > > > cable.
> >> > > > I doubt that the book is still in print, but it might be something
> >> > > > to look
> >> > > > for.  If you get the book without the disk, let me know, and I'll
> >> > > > get you
> >> > > > the software.  I can't remember if it lets you map the host drive
> >> > > > to the
> >> > > > client machine, but that would be cool, if it does that.
> >> > > >
> >> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> > > > "She said it was either her or the ham radio.  Over."
> >> > > >
> >> > > >
> >> > > > ----- Original Message -----
> >> > > > From: "techtalklive@" <doug@>
> >> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> >> > > > Sent: Monday, October 15, 2012 10:47 PM
> >> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> > > >
> >> > > >
> >> > > > > Its a 1530... clock is... I dont know 20Mhz?
> >> > > > > Yes checking out Backpacks now. Just collected drivers from
> >> > > > > around the web for them and am checking on ebay for
> >> > > > > equipment.  I suspect they will work.
> >> > > > >
> >> > > > > I thought I might take a look to see if there was parallel port
> >> > > > > software that would work like "laplink" to tether to another PC
> >> > > > > but would make a directory/drive on the the host PC appear as a
> >> > > > > drive to
> >> > > > > the 1530.
> >> > > > >
> >> > > > > That would be cool... and avoid purchasing old hardware.
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@>
> >> > > > > wrote:
> >> > > > >>
> >> > > > >> What's the bus clock of the 1520, for example?  If it's 10MHz,
> >> > > > >> it *might*
> >> > > > >> make it, but it would be breathing hard.  As for parallel
> >> > > > >> drives, see if
> >> > > > >> you
> >> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive that
> >> > > > >> works off
> >> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> >> > > > >>
> >> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> > > > >> "She said it was either her or the ham radio.  Over."
> >> > > > >>
> >> > > > >>
> >> > > > >> ----- Original Message -----
> >> > > > >> From: "techtalklive@" <doug@>
> >> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> >> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> > > > >>
> >> > > > >>
> >> > > > >> >
> >> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has
> >> > > > >> > limited
> >> > > > >> > driver
> >> > > > >> > support.
> >> > > > >> > Other similar devices don't seem to be on the used market
> >> > > > >> > right not.
> >> > > > >> > I'm also considering a parallel based disk drive at this
> >> > > > >> > point.
> >> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I
> >> > > > >> > think... I
> >> > > > >> > didn't
> >> > > > >> > actually run the numbers.
> >> > > > >> > DC
> >> > > > >> >
> >> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
> >> > > > >> > <n8euj@> wrote:
> >> > > > >> >>
> >> > > > >> >> I don't think I'd even bother with the serial port.  You
> >> > > > >> >> might get
> >> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, but
> >> > > > >> >> even a
> >> > > > >> >> 16550AFN
> >> > > > >> >> will only give you 115,200bps.  And, if it's an 8250A/16450
> >> > > > >> >> UART, you
> >> > > > >> >> have
> >> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the
> >> > > > >> >> standard
> >> > > > >> >> parallel
> >> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad
> >> > > > >> >> faster with
> >> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of a
> >> > > > >> >> GRiD, but
> >> > > > >> >> even
> >> > > > >> >> if you could directly tie in to the ISA bus, it would be
> >> > > > >> >> tough.
> >> > > > >> >>
> >> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> > > > >> >> "She said it was either her or the ham radio.  Over."
> >> > > > >> >>
> >> > > > >> >>
> >> > > > >> >> ----- Original Message -----
> >> > > > >> >> From: "Androgenoide" <androgenoide@>
> >> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> >> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
> >> > > > >> >> modes?
> >> > > > >> >>
> >> > > > >> >>
> >> > > > >> >> > The only real obstacle to DOS networking with the Grid is
> >> > > > >> >> > finding an
> >> > > > >> >> > Ethernet adapter that will work through either the serial
> >> > > > >> >> > or
> >> > > > >> >> > parallel
> >> > > > >> >> > ports.   I used the Xircom on the parallel port because I
> >> > > > >> >> > had one at
> >> > > > >> >> > the
> >> > > > >> >> > time.   I've got a serial device server now that would
> >> > > > >> >> > probably work
> >> > > > >> >> > too
> >> > > > >> >> > but I've got too much going on at the moment to dig out a
> >> > > > >> >> > Grid just
> >> > > > >> >> > to
> >> > > > >> >> > see
> >> > > > >> >> > what would be required.   Either of those solutions would
> >> > > > >> >> > be limited
> >> > > > >> >> > by
> >> > > > >> >> > the speed of the ports(and the Grid itself), of course.
> >> > > > >> >> > Gigabit
> >> > > > >> >> > speeds
> >> > > > >> >> > are out of the question!
> >> > > > >> >> > Another thought... The guy who put together the Techworm
> >> > > > >> >> > boot disk
> >> > > > >> >> > also
> >> > > > >> >> > had one called Networm, a single floppy that could do a
> >> > > > >> >> > dialup
> >> > > > >> >> > internet
> >> > > > >> >> > connection... (if you still have access to a dialup
> >> > > > >> >> > service... if
> >> > > > >> >> > not,
> >> > > > >> >> > Budget Dial Up has a prepaid service that allows you to buy
> >> > > > >> >> > just a
> >> > > > >> >> > few
> >> > > > >> >> > hours at a time).
> >> > > > >> >> >
> >> > > > >> >> > Generally speaking, if an old machine has either a serial
> >> > > > >> >> > or
> >> > > > >> >> > parallel
> >> > > > >> >> > port
> >> > > > >> >> > and you can get it to boot into DOS, there is always a way
> >> > > > >> >> > to
> >> > > > >> >> > transfer
> >> > > > >> >> > files to another machine.   Even if it has no floppy you
> >> > > > >> >> > can use
> >> > > > >> >> > another
> >> > > > >> >> > DOS machine running Laplink.  If it does have a floppy
> >> > > > >> >> > there are a
> >> > > > >> >> > lot
> >> > > > >> >> > of
> >> > > > >> >> > file transfer programs out there, from Kermit to the
> >> > > > >> >> > original
> >> > > > >> >> > version
> >> > > > >> >> > of
> >> > > > >> >> > Procomm that will fit on a single floppy.
> >> > > > >> >> >
> >> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of
> >> > > > >> >> > RAM... a
> >> > > > >> >> > full
> >> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 would
> >> > > > >> >> > be
> >> > > > >> >> > tricky
> >> > > > >> >> > and
> >> > > > >> >> > would require some hardware tweaks even to make a slow
> >> > > > >> >> > machine...
> >> > > > >> >> > kind
> >> > > > >> >> > of
> >> > > > >> >> > an extreme project.   I've heard of a Linux distro that
> >> > > > >> >> > will fit on
> >> > > > >> >> > a
> >> > > > >> >> > single floppy and run on systems with limited resources
> >> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but
> >> > > > >> >> > even that
> >> > > > >> >> > one
> >> > > > >> >> > seems to want 4MB of RAM.
> >> > > > >> >> >
> >> > > > >> >> > There are plenty of people on the web who have too much
> >> > > > >> >> > time on
> >> > > > >> >> > their
> >> > > > >> >> > hands and are still playing with machines even older than
> >> > > > >> >> > the
> >> > > > >> >> > Grid...
> >> > > > >> >> > You
> >> > > > >> >> > can still buy new after-market accessories for Commodores,
> >> > > > >> >> > for
> >> > > > >> >> > example,
> >> > > > >> >> > so
> >> > > > >> >> > don't assume that there are no new solutions to old
> >> > > > >> >> > problems.
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> wrote:
> >> > > > >> >> >>
> >> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> >> > > > >> >> >> >
> >> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the
> >> > > > >> >> >> > parallel
> >> > > > >> >> >> > port
> >> > > > >> >> >> > to
> >> > > > >> >> >> > a NIC... although I've been wondering lately if it might
> >> > > > >> >> >> > not have
> >> > > > >> >> >> > made
> >> > > > >> >> >> > equally good sense to use a device server on the serial
> >> > > > >> >> >> > port...?
> >> > > > >> >> >> > And,
> >> > > > >> >> >> > of course, the Arachne browser... not many choices for a
> >> > > > >> >> >> > DOS
> >> > > > >> >> >> > browser
> >> > > > >> >> >> > are there? I used it to check my Yahoo web mail and I'll
> >> > > > >> >> >> > have to
> >> > > > >> >> >> > say
> >> > > > >> >> >> > that it gave a whole new dimension of meaning to the
> >> > > > >> >> >> > word "slow."
> >> > > > >> >> >> > Go
> >> > > > >> >> >> > ahead, make a pot of tea while it's loading that page,
> >> > > > >> >> >> > it will be
> >> > > > >> >> >> > a
> >> > > > >> >> >> > while.
> >> > > > >> >> >> >
> >> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran into a
> >> > > > >> >> >> > web page
> >> > > > >> >> >> > last
> >> > > > >> >> >> > week of a guy who was competing with a friend to see who
> >> > > > >> >> >> > could
> >> > > > >> >> >> > force
> >> > > > >> >> >> > Windows XP to run with the least resources. It won't
> >> > > > >> >> >> > install
> >> > > > >> >> >> > unless
> >> > > > >> >> >> > it
> >> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor but,
> >> > > > >> >> >> > once
> >> > > > >> >> >> > installed
> >> > > > >> >> >> > you can remove RAM and underclock the machine... He said
> >> > > > >> >> >> > he got
> >> > > > >> >> >> > one
> >> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock and
> >> > > > >> >> >> > it took a
> >> > > > >> >> >> > half
> >> > > > >> >> >> > hour to boot.
> >> > > > >> >> >> >
> >> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I
> >> > > > >> >> >> > have nothing
> >> > > > >> >> >> > else
> >> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can get
> >> > > > >> >> >> > online
> >> > > > >> >> >> > with
> >> > > > >> >> >> > a
> >> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that
> >> > > > >> >> >> > Contiki
> >> > > > >> >> >> > OS/browser
> >> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> >> > > > >> >> >> >
> >> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> > > > >> >> >> > "techtalklive@"
> >> > > > >> >> >> > <doug@> wrote:
> >> > > > >> >> >> > >
> >> > > > >> >> >> > > Like the hack job? :O
> >> > > > >> >> >> > >
> >> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone
> >> > > > >> >> >> > > swapped
> >> > > > >> >> >> > > screes?
> >> > > > >> >> >> > > Should I take the kbd apart and clean it (will that
> >> > > > >> >> >> > > likely
> >> > > > >> >> >> > > fix it?) or look for a replacement?
> >> > > > >> >> >> > >
> >> > > > >> >> >> > > So what can I do with this thing if I put more mem in
> >> > > > >> >> >> > > it?
> >> > > > >> >> >> > > Its all accessed funky through expaned mem methods,
> >> > > > >> >> >> > > isn't it?
> >> > > > >> >> >> > > I have a coprocessor I could put in this but not sure
> >> > > > >> >> >> > > of
> >> > > > >> >> >> > > the point there.
> >> > > > >> >> >> > >
> >> > > > >> >> >> > > I think I might like to accomplish getting it on the
> >> > > > >> >> >> > > web.
> >> > > > >> >> >> > > I'd need the LAN hardware I guess.
> >> > > > >> >> >> > > Any other ideas?
> >> > > > >> >> >> > >
> >> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two
> >> > > > >> >> >> > > contact on
> >> > > > >> >> >> > > it that mate inside the cavity. But one of the two
> >> > > > >> >> >> > > spring
> >> > > > >> >> >> > > contacts
> >> > > > >> >> >> > > inside is "rubberized", so only the one contact hits
> >> > > > >> >> >> > > metal to
> >> > > > >> >> >> > > metal.
> >> > > > >> >> >> > > So the P.S. only works using the cord to go from the
> >> > > > >> >> >> > > P.S. into
> >> > > > >> >> >> > > the
> >> > > > >> >> >> > > radial DC jack. Strange?
> >> > > > >> >> >> > >
> >> > > > >> >> >> > > DC
> >> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> >> > > > >> >> >> > <Jeriddian@>
> >> > > > >> >> >> > wrote:
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > > > Great job, Doug!
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of
> >> > > > >> >> >> > > > these
> >> > > > >> >> >> > > > beautiful
> >> > > > >> >> >> > machines? And yep, that's the way it works.
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > > > Once you restore battery power to the 1287A, the
> >> > > > >> >> >> > > > CMOS
> >> > > > >> >> >> > > > registers
> >> > > > >> >> >> > are again active. It's just that they're filled with
> >> > > > >> >> >> > nonsense, so
> >> > > > >> >> >> > the
> >> > > > >> >> >> > computer tells you the clock had stopped (which it did),
> >> > > > >> >> >> > and
> >> > > > >> >> >> > simply
> >> > > > >> >> >> > prompts you to reset the time. Once you do that and
> >> > > > >> >> >> > reboot,
> >> > > > >> >> >> > everything's hunky-dory.
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > > > You can probably find some more 256K sticks
> >> > > > >> >> >> > > > somewhere and
> >> > > > >> >> >> > > > upgrade
> >> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to Ver.
> >> > > > >> >> >> > 6.22.
> >> > > > >> >> >> > Great
> >> > > > >> >> >> > to
> >> > > > >> >> >> > hear the HDD is good too.
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on
> >> > > > >> >> >> > > > sale on ebay
> >> > > > >> >> >> > > > that
> >> > > > >> >> >> > I looked at, however it was strange. It was definitely
> >> > > > >> >> >> > branded a
> >> > > > >> >> >> > 1520,
> >> > > > >> >> >> > and advertised that way, but the flip up screen said it
> >> > > > >> >> >> > was a 386
> >> > > > >> >> >> > machine. I decided to get it, and it was only about $90
> >> > > > >> >> >> > with
> >> > > > >> >> >> > shipping.
> >> > > > >> >> >> > When I got the machine, I was very excited when it began
> >> > > > >> >> >> > to post,
> >> > > > >> >> >> > because I got a full 8MB of RAM! It of course displayed
> >> > > > >> >> >> > the
> >> > > > >> >> >> > configuration error 02 indicating the CMOS battery was
> >> > > > >> >> >> > dead. So I
> >> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A
> >> > > > >> >> >> > model, but
> >> > > > >> >> >> > that
> >> > > > >> >> >> > was
> >> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I had a
> >> > > > >> >> >> > spare.
> >> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard off
> >> > > > >> >> >> > to
> >> > > > >> >> >> > discover
> >> > > > >> >> >> > that not only was this really a 386 machine (a 1530),
> >> > > > >> >> >> > but it also
> >> > > > >> >> >> > had
> >> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced the
> >> > > > >> >> >> > 1287A and
> >> > > > >> >> >> > this
> >> > > > >> >> >> > solved the configuration error just fine. But alas, I
> >> > > > >> >> >> > didn't get
> >> > > > >> >> >> > a
> >> > > > >> >> >> > triple crown winner here. The Conner drive was
> >> > > > >> >> >> > definitely dead.
> >> > > > >> >> >> > But
> >> > > > >> >> >> > heck, getting another HDD is easy compared to the other
> >> > > > >> >> >> > benefits!
> >> > > > >> >> >> > The
> >> > > > >> >> >> > original owner of this machine definitely took care of
> >> > > > >> >> >> > it.
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > > > Phil
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> > > > >> >> >> > wrote:
> >> > > > >> >> >> > > > >
> >> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> >> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and ran 
> >> > > > >> >> >> > > > > the wires
> >> > > > >> >> >> > > > > to
> >> > > > >> >> >> > > > > a
> >> > > > >> >> >> > convenient place for the battery. Upon power up it said
> >> > > > >> >> >> > > > > that the RTC was stopped, and it needed setting.
> >> > > > >> >> >> > > > > The "stopped" message threw me, I thought
> >> > > > >> >> >> > > > > something was
> >> > > > >> >> >> > > > > wrong
> >> > > > >> >> >> > > > > with
> >> > > > >> >> >> > > > > the chip. It took an F1 to continue and went right
> >> > > > >> >> >> > > > > through
> >> > > > >> >> >> > > > > POST
> >> > > > >> >> >> > and Autoexec.
> >> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory set
> >> > > > >> >> >> > > > > the RTC.
> >> > > > >> >> >> > > > > Now it boots cleanly.
> >> > > > >> >> >> > > > > Has Lotus123 on the HD.
> >> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"...
> >> > > > >> >> >> > > > > page 2!
> >> > > > >> >> >> > > > > The only remaining issue is that a few keys on the
> >> > > > >> >> >> > > > > keyboard
> >> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external
> >> > > > >> >> >> > > > > kbd
> >> > > > >> >> >> > > > > everything
> >> > > > >> >> >> > > > > works.
> >> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 386
> >> > > > >> >> >> > > > > with 1MB
> >> > > > >> >> >> > > > > RAM,
> >> > > > >> >> >> > > > > a
> >> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some smokin'
> >> > > > >> >> >> > system!
> >> > > > >> >> >> > > > >
> >> > > > >> >> >> > > > >
> >> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> > > > >> >> >> > wrote:
> >> > > > >> >> >> > > > > >
> >> > > > >> >> >> > > > > > Thanks so much that was great info. I had no
> >> > > > >> >> >> > > > > > idea on the
> >> > > > >> >> >> > > > > > X2
> >> > > > >> >> >> > > > > > being a rating. May have to try it without them
> >> > > > >> >> >> > > > > > just to
> >> > > > >> >> >> > > > > > make sure the rest of it is still good.
> >> > > > >> >> >> > > > > >
> >> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> > > > >> >> >> > "fullsizewagon"
> >> > > > >> >> >> > <andrebakken@> wrote:
> >> > > > >> >> >> > > > > > >
> >> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes a
> >> > > > >> >> >> > > > > > > big
> >> > > > >> >> >> > > > > > > difference.
> >> > > > >> >> >> > The X2 also signifies they're an enhanced type meant to
> >> > > > >> >> >> > go
> >> > > > >> >> >> > directly
> >> > > > >> >> >> > across the mains. Be sure to get X2 rated replacements.
> >> > > > >> >> >> > > > > > > The PSU will work without those cap's in
> >> > > > >> >> >> > > > > > > place, but
> >> > > > >> >> >> > > > > > > will
> >> > > > >> >> >> > radiate more interference/noise out onto the mains.
> >> > > > >> >> >> > > > > > >
> >> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> > > > >> >> >> > wrote:
> >> > > > >> >> >> > > > > > > >
> >> > > > >> >> >> > > > > > > > There are two in there that are the same.
> >> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> >> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square
> >> > > > >> >> >> > > > > > > > package.
> >> > > > >> >> >> > > > > > > > The bottom is clear so you can see the
> >> > > > >> >> >> > > > > > > > radial shape.
> >> > > > >> >> >> > > > > > > > I have them out already.
> >> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> >> > > > >> >> >> > > > > > > >
> >> > > > >> >> >> > > > > > > > DC
> >> > > > >> >> >> > > > > ; > >
> >> > > > >> >> >> > > > > > > >
> >> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> >> > > > >> >> >> > <Jeriddian@>
> >> > > > >> >> >> > wrote:
> >> > > > >> >> >> > > > > > > > >
> >> > > > >> >> >> > > > > > > > > Good Find, DC
> >> > > > >> >> >> > > > > > > > >
> >> > > > >> >> >> > > > > > > > > I guess they got burnt to the point where
> >> > > > >> >> >> > > > > > > > > you can't
> >> > > > >> >> >> > identify the capcity amount. Could you give me the
> >> > > > >> >> >> > output voltage
> >> > > > >> >> >> > and
> >> > > > >> >> >> > amperage? I'll look through my units and see if I can
> >> > > > >> >> >> > identify
> >> > > > >> >> >> > them
> >> > > > >> >> >> > for you.
> >> > > > >> >> >> > > > > > > > >
> >> > > > >> >> >> > > > > > > > > Phil
> >> > > > >> >> >> > > > > > > > >
> >> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> > > > >> >> >> > wrote:
> >> > > > >> >> >> > > > > > > > > >
> >> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like a
> >> > > > >> >> >> > > > > > > > > > failed cap
> >> > > > >> >> >> > > > > > > > > > in
> >> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> >> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> >> > > > >> >> >> > > > > > > > > > Any identification tips welcome, thanks.
> >> > > > >> >> >> > > > > > > > > > There appears to be two of the same 
> >> > > > >> >> >> > > > > > > > > > caps, would
> >> > > > >> >> >> > replace both
> >> > > > >> >> >> > > > > > > > > > of course.
> >> > > > >> >> >> > > > > > > > > >
> >> > > > >> >> >> > > > > > > > > > DC
> >> > > > >> >> >> > > > > > > > > >
> >> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> > > > >> >> >> > wrote:
> >> > > > >> >> >> > > > > > > > > > >
> >> > > > >> >> >> > > > > > > > > > > I am considering tackling the repair
> >> > > > >> >> >> > > > > > > > > > > of a 1530
> >> > > > >> >> >> > > > > > > > > > > that
> >> > > > >> >> >> > > > > > > > > > > does not respond to the power switch.
> >> > > > >> >> >> > > > > > > > > > > The power
> >> > > > >> >> >> > > > > > > > > > > supply
> >> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think its
> >> > > > >> >> >> > > > > > > > > > > fine
> >> > > > >> >> >> > (unfortunately,
> >> > > > >> >> >> > > > > > > > > > > that would have been an easy problem
> >> > > > >> >> >> > > > > > > > > > > isolation!)
> >> > > > >> >> >> > > > > > > > > > > So its something internal. I have the
> >> > > > >> >> >> > > > > > > > > > > service
> >> > > > >> >> >> > > > > > > > > > > manuals
> >> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd get
> >> > > > >> >> >> > > > > > > > > > > some
> >> > > > >> >> >> > > > > > > > > > > pointers
> >> > > > >> >> >> > form
> >> > > > >> >> >> > > > > > > > > > > folks who have already performed cold
> >> > > > >> >> >> > > > > > > > > > > stone
> >> > > > >> >> >> > > > > > > > > > > dead
> >> > > > >> >> >> > diagnosis.
> >> > > > >> >> >> > > > > > > > > > >
> >> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this
> >> > > > >> >> >> > > > > > > > > > > very clean
> >> > > > >> >> >> > > > > > > > > > > 1530
> >> > > > >> >> >> > > > > > > > > > > will
> >> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> >> > > > >> >> >> > > > > > > > > > >
> >> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> >> > > > >> >> >> > > > > > > > > > > DC
> >> > > > >> >> >> > > > > > > > > > >
> >> > > > >> >> >> > > > > > > > > >
> >> > > > >> >> >> > > > > > > > >
> >> > > > >> >> >> > > > > > > >
> >> > > > >> >> >> > > > > > >
> >> > > > >> >> >> > > > > >
> >> > > > >> >> >> > > > >
> >> > > > >> >> >> > > >
> >> > > > >> >> >> > >
> >> > > > >> >> >> >
> >> > > > >> >> >>
> >> > > > >> >> >> Since we are on the topic of TCP does anyone have a
> >> > > > >> >> >> formula stashed
> >> > > > >> >> >> that
> >> > > > >> >> >> can be easily had to run say serial (probably ppp) from
> >> > > > >> >> >> something
> >> > > > >> >> >> like
> >> > > > >> >> >> a
> >> > > > >> >> >> small system like the raspberry pi serially to a system
> >> > > > >> >> >> with dos
> >> > > > >> >> >> and a
> >> > > > >> >> >> stack?  It's been so long since I messed with dos
> >> > > > >> >> >> environment
> >> > > > >> >> >> networking
> >> > > > >> >> >> I forget.
> >> > > > >> >> >>
> >> > > > >> >> >> I think windows of some sort had trumpet to handle part of
> >> > > > >> >> >> the
> >> > > > >> >> >> equation,
> >> > > > >> >> >> but I don' t have any references right now over a dos
> >> > > > >> >> >> stack.
> >> > > > >> >> >>
> >> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98
> >> > > > >> >> >> would be
> >> > > > >> >> >> better,
> >> > > > >> >> >> but I don't know if the hardware here would be up to those
> >> > > > >> >> >> os's.
> >> > > > >> >> >>
> >> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be
> >> > > > >> >> >> nice too.
> >> > > > >> >> >> I'm
> >> > > > >> >> >> asking for everything here.  Objective is to have
> >> > > > >> >> >> something that
> >> > > > >> >> >> could
> >> > > > >> >> >> suck off or load a disk image with a floppy boot.  I
> >> > > > >> >> >> suspect it was
> >> > > > >> >> >> a
> >> > > > >> >> >> difficult thing to get going in the day, though, and even
> >> > > > >> >> >> wors now.
> >> > > > >> >> >>
> >> > > > >> >> >> jim
> >> > > > >> >> >> >
> >> > > > >> >> >> > ,___
> >> > > > >> >> >> >
> >> > > > >> >> >>
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> > ------------------------------------
> >> > > > >> >> >
> >> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> >> > > > >> >> > Links
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >> >
> >> > > > >> >>
> >> > > > >> >
> >> > > > >> >
> >> > > > >> >
> >> > > > >> >
> >> > > > >> > ------------------------------------
> >> > > > >> >
> >> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> >> > Links
> >> > > > >> >
> >> > > > >> >
> >> > > > >> >
> >> > > > >>
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > > ------------------------------------
> >> > > > >
> >> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> >>
> >>
> >>
> >> ------------------------------------
> >>
> >> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
>

Yahoo! Message number: 2586
Date: Sun, 21 Oct 2012 02:43:45 -0000
From: "techtalklive@..."
Subject: Re: Best GRID 1530 Processor

OK I'll talk to myself here...
Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
Talk about early overclocking!  GRiD cut corners?
Glad this one didn't go on the space shuttle.
So I put a 33Mhz part in.
I got confused on drop in parts and tried the 486DLC I had around.
no go of course, its "wasn't intended for drop in compatibility"
so I've now read.

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Revitalizing the 1530 GRiD got me looking into my stash of
> old parts. First I found a '387. Put it in, it works.
> Then, almost forgetting the 486 history, I found
> a TI486DLC. So that's a 486 in 386 pinout with improved
> internals and a 1k cache. So that got me thinking, what would
> be the best in class 386 replacement...
> So far I get that the answer is a TI486SXL-50.
>
> 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> Needs a dos sys file to enable the cache at boot.
>
> Concur?
>
> I don't suppose there is much hope in increasing the clocks
> around the MB...
> 
> Other optimizing ideas?
>

Yahoo! Message number: 2587
Date: Sun, 21 Oct 2012 04:44:05 -0000
From: "jeriddian"
Subject: Re: Best GRID 1530 Processor

The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> OK I'll talk to myself here...
> Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> Talk about early overclocking!  GRiD cut corners?
> Glad this one didn't go on the space shuttle.
> So I put a 33Mhz part in.
> I got confused on drop in parts and tried the 486DLC I had around.
> no go of course, its "wasn't intended for drop in compatibility"
> so I've now read.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > Revitalizing the 1530 GRiD got me looking into my stash of
> > old parts. First I found a '387. Put it in, it works.
> > Then, almost forgetting the 486 history, I found
> > a TI486DLC. So that's a 486 in 386 pinout with improved
> > internals and a 1k cache. So that got me thinking, what would
> > be the best in class 386 replacement...
> > So far I get that the answer is a TI486SXL-50.
> >
> > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > Needs a dos sys file to enable the cache at boot.
> >
> > Concur?
> >
> > I don't suppose there is much hope in increasing the clocks
> > around the MB...
> >
> > Other optimizing ideas?
> >
>

Yahoo! Message number: 2588
Date: Sun, 21 Oct 2012 07:19:58 -0000
From: "techtalklive@..."
Subject: Re: Best GRID 1530 Processor

The original part was a 386DX-16. Got pics to prove it.
Yes the 33Mhz part I put in is a DX and is working great.

About the TI486DLC... a loose reading about the chip suggested to me
it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
is bricked.

I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.

On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
If that's so it chaps my butt...
Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?

Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?

And how does a 16Mhz part cut it on a 25Mhz MB?
Does the 16bit data bus, if that is what it is, decouple the
DX's critical timing so that the lower rated parts work OK?
Or dos the part also not actually get a 25Mhz clock?

Inquiring minds want to know!

I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
parts.  Perhaps there are TI and IBM parts too. It gets confusing!

If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!

From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
Q. Which one of the Cyrix Upgrade products do I use?
    A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.

On the other hand, what am I fighting for?  Its still going to
be a slow 8MB 386/486 machine... I guess its just a fun challenge to
try to max it out.
--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > OK I'll talk to myself here...
> > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > Talk about early overclocking!  GRiD cut corners?
> > Glad this one didn't go on the space shuttle.
> > So I put a 33Mhz part in.
> > I got confused on drop in parts and tried the 486DLC I had around.
> > no go of course, its "wasn't intended for drop in compatibility"
> > so I've now read.
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > old parts. First I found a '387. Put it in, it works.
> > > Then, almost forgetting the 486 history, I found
> > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > internals and a 1k cache. So that got me thinking, what would
> > > be the best in class 386 replacement...
> > > So far I get that the answer is a TI486SXL-50.
> > >
> > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > Needs a dos sys file to enable the cache at boot.
> > >
> > > Concur?
> > >
> > > I don't suppose there is much hope in increasing the clocks
> > > around the MB...
> > >
> > > Other optimizing ideas?
> > >
> >
>

Yahoo! Message number: 2589
Date: Sun, 21 Oct 2012 09:34:04 -0700 (PDT)
From: Lawrence Walker
Subject: Re: [RuGRiD-Laptop] Re: Best GRID 1530 Processor
text/plain; charset=utf-8

 If you look in the files section there is a folder "Grid1520files" I uploaded in 2007, most of which were from the AST archives. There is a Cyrix subfolder in there which is related to Cyrix.  IIRC, the Grid 1755, a DEC, and a RS laptop, were all the same copies with one manufacturer, and they used that chip. Except for differing color all the parts were interchangeable. I've never had a 1530 so I couldn't test it. I did use 1000k lo-profile SIPPs I acquired from a guy in Belgium to upgrade one of my 1520 to 8megs (4megs has to be installed IIRC in a 1-3-5-7 order) and used the Grid set-up app to set it for extended memory. The Conner hard-drive failure syndrome knocked me out of my GRIP period and I didn't have a chip programmer to make the needed chips which allowed use of other HDDs

 

To: RuGRiD-Laptop@yahoogroups.com
>Sent: Sunday, October 21, 2012 2:19:58 AM
>Subject: [RuGRiD-Laptop] Re: Best GRID 1530 Processor
>
>
> 
>The original part was a 386DX-16. Got pics to prove it.
>Yes the 33Mhz part I put in is a DX and is working great.
>
>About the TI486DLC... a loose reading about the chip suggested to me
>it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
>but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
>is bricked.
>
>I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
>the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
>
>On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
>If that's so it chaps my butt...
>Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
>
>Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
>Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
>
>And how does a 16Mhz part cut it on a 25Mhz MB?
>Does the 16bit data bus, if that is what it is, decouple the
>DX's critical timing so that the lower rated parts work OK?
>Or dos the part also not actually get a 25Mhz clock?
>
>Inquiring minds want to know!
>
>I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
>parts.  Perhaps there are TI and IBM parts too. It gets confusing!
>
>If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
>
>From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
>Q. Which one of the Cyrix Upgrade products do I use?
>A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
>
>On the other hand, what am I fighting for?  Its still going to
>be a slow 8MB 386/486 machine... I guess its just a fun challenge to
>try to max it out.
>--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>>
>> The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
>>
>> Phil
>>
>> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
>> >
>> > OK I'll talk to myself here...
>> > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
>> > Talk about early overclocking!  GRiD cut corners?
>> > Glad this one didn't go on the space shuttle.
>> > So I put a 33Mhz part in.
>> > I got confused on drop in parts and tried the 486DLC I had around.
>> > no go of course, its "wasn't intended for drop in compatibility"
>> > so I've now read.
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
>> > >
>> > > Revitalizing the 1530 GRiD got me looking into my stash of
>> > > old parts. First I found a '387. Put it in, it works.
>> > > Then, almost forgetting the 486 history, I found
>> > > a TI486DLC. So that's a 486 in 386 pinout with improved
>> > > internals and a 1k cache. So that got me thinking, what would
>> > > be the best in class 386 replacement...
>> > > So far I get that the answer is a TI486SXL-50.
>> > >
>> > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
>> > > Needs a dos sys file to enable the cache at boot.
>> > >
>> > > Concur?
>> > >
>> > > I don't suppose there is much hope in increasing the clocks
>> > > around the MB...
>> > >
>> > > Other optimizing ideas?
>> > >
>> >
>>
>
>
>
>
>

Yahoo! Message number: 2590
Date: Sun, 21 Oct 2012 13:07:35 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

I wonder if it would be possible to rig up an 8-bit ISA slot somewhere 
inside the 1530 so you could use one of those AMI cards.  Finding one would 
be tough, though.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "techtalklive@..." <doug@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Saturday, October 20, 2012 10:40 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


> I'm going to take a shot at shoe-horning some low height 1MB SIMMs
> in their.  Let ya'll know how it goes.
> That Megatrends card sounds familiar; I suspect I worried about
> drive support way back in the day.  Actually drive support
> is also an issue with these 1530s.
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> Wow.  And, I suppose if you could find SIPPs from, say, Crucial or 
>> Corsair,
>> they'd charge you a mint.  I bought a 32MB FP SIMM for the first laser
>> printer I owned, and Crucial wanted about a buck and a half a meg.  Yeah,
>> that Paradox adapter would be swell.  That may have gone the way of the 
>> $50
>> card that American Megatrends used to make that would plug into any ISA 
>> slot
>> and patch the BIOS so that you could use any size hard drive by any
>> manufacturer.  Lots of good ideas like that, but they just sort of faded
>> away.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message ----- 
>> From: "jeriddian" <Jeriddian@...>
>> To: <RuGRiD-Laptop@yahoogroups.com>
>> Sent: Thursday, October 18, 2012 9:41 PM
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>> > There was a company that at one time made an adaptation for the GRiD's
>> > called paradox in which they made an adapter that fit into the pin 
>> > slots
>> > (I think. I've never actually seen it, but this is what I heard) and 
>> > into
>> > which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for 
>> > this,
>> > but never found it.  That would be cool to find and use.
>> >
>> > The problems with the memory adaptation is ther is very, very little 
>> > room
>> > for the memory to fit. The MoBo was actually designed to fit the 
>> > smallest
>> > RAM stick they made at the time. You have to use a low profile SIPP, 
>> > one
>> > with no extra PC Board material off to the sides. You could try laying 
>> > the
>> > wired SIMM's over, but I looked at trying to do that with high profile
>> > SIPP's and there really isn't any room to do that either. I think if
>> > someone coud come up with an adapter like the paradox I described that 
>> > fit
>> > 2 4 MB sticks to run in the eight rows of holes, that would likely be 
>> > the
>> > best answer.
>> >
>> > Phil
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
>> >>
>> >> If you made the leads long enough to lay the SIMMs over on their side,
>> >> and insulated them so that they wouldn't short anything out, would you
>> >> have any lead dress problems, such as EMI/RFI, stray capacitance or
>> >> inductance, etc.?  And, if so, wonder if installing ferrite beads on 
>> >> the
>> >> leads would help.
>> >>
>> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> "She said it was either her or the ham radio.  Over."
>> >>
>> >>
>> >> ----- Original Message ----- 
>> >> From: Shawnerz
>> >> To: rugrid-laptop@yahoogroups.com
>> >> Sent: Wednesday, October 17, 2012 12:52 PM
>> >> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >>
>> >>
>> >>
>> >>
>> >> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.
>> >> Once I soldered the pins on, the module height would not allow the 
>> >> cover
>> >> to go on.
>> >> Your results may vary,
>> >> -Shawn
>> >>
>> >>
>> >>
>> >> -------- Original message --------
>> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >> From: "techtalklive@" <doug@>
>> >> To: RuGRiD-Laptop@yahoogroups.com
>> >> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >>
>> >>
>> >>
>> >>
>> >> Well that sounds promising.  The only thing that would
>> >> top that would be a native SCSI attached to the bus connectors
>> >> in the accessory port.  A ParPort one would do in the meantime.
>> >> Thanks!
>> >>
>> >> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
>> >> Anyone know the mem speed?  Hate to take the thing apart right
>> >> now to find out.
>> >> Thanks!
>> >>
>> >> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
>> >> >
>> >> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked
>> >> > down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the 
>> >> > mobo
>> >> > clocked down to 12.5 MHz.
>> >> >
>> >> > The problem with trying to access a higher capacity drive from the
>> >> > parallel port is that DOS is not capable of handling a large number 
>> >> > of
>> >> > addresses. Of course, SCSI then is an option in doing that. I have a
>> >> > portable SCSI device which hooks into the parallel port made by
>> >> > Adaptec, called the Mini-SCSI which will allow the computer to 
>> >> > connect
>> >> > to a larger drive such as a CDROM, large HDD, ZIP drive, or similar
>> >> > device by a SCSI-II connection. The SCSI connector has a parallel 
>> >> > port
>> >> > on it that allows you to throughput a connection to your printer. I
>> >> > think that the maximum HDD capacity I can use with this thing is 2T.
>> >> >
>> >> > Phil
>> >> >
>> >> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
>> >> > >
>> >> > > I used to have all that stuff.  Today I think I can run a dos 
>> >> > > program
>> >> > > on the GRiD that talks to my trusty TotalCommander on another PC.
>> >> > > As I might have mentioned in another post, if I could get
>> >> > > another PC to appear as a mounted drive to the GRiD I'd be in
>> >> > > real fat city.  Then I'd have the machine wide open to the rest of
>> >> > > the world.
>> >> > > Any ideas there?
>> >> > >
>> >> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@>
>> >> > > wrote:
>> >> > > >
>> >> > > > Good luck with the Backpack stuff.
>> >> > > >
>> >> > > > There's a book called "Hot Links", which was produced by the 
>> >> > > > same
>> >> > > > people
>> >> > > > that produced LapLink.  In the back of the book is a disk with
>> >> > > > programs that
>> >> > > > will let you transfer files, either via null modem cable or 
>> >> > > > LapLink
>> >> > > > cable.
>> >> > > > I doubt that the book is still in print, but it might be 
>> >> > > > something
>> >> > > > to look
>> >> > > > for.  If you get the book without the disk, let me know, and 
>> >> > > > I'll
>> >> > > > get you
>> >> > > > the software.  I can't remember if it lets you map the host 
>> >> > > > drive
>> >> > > > to the
>> >> > > > client machine, but that would be cool, if it does that.
>> >> > > >
>> >> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> > > > "She said it was either her or the ham radio.  Over."
>> >> > > >
>> >> > > >
>> >> > > > ----- Original Message ----- 
>> >> > > > From: "techtalklive@" <doug@>
>> >> > > > To: <RuGRiD-Laptop@yahoogroups.com>
>> >> > > > Sent: Monday, October 15, 2012 10:47 PM
>> >> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >> > > >
>> >> > > >
>> >> > > > > Its a 1530... clock is... I dont know 20Mhz?
>> >> > > > > Yes checking out Backpacks now. Just collected drivers from
>> >> > > > > around the web for them and am checking on ebay for
>> >> > > > > equipment.  I suspect they will work.
>> >> > > > >
>> >> > > > > I thought I might take a look to see if there was parallel 
>> >> > > > > port
>> >> > > > > software that would work like "laplink" to tether to another 
>> >> > > > > PC
>> >> > > > > but would make a directory/drive on the the host PC appear as 
>> >> > > > > a
>> >> > > > > drive to
>> >> > > > > the 1530.
>> >> > > > >
>> >> > > > > That would be cool... and avoid purchasing old hardware.
>> >> > > > >
>> >> > > > >
>> >> > > > >
>> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" 
>> >> > > > > <n8euj@>
>> >> > > > > wrote:
>> >> > > > >>
>> >> > > > >> What's the bus clock of the 1520, for example?  If it's 
>> >> > > > >> 10MHz,
>> >> > > > >> it *might*
>> >> > > > >> make it, but it would be breathing hard.  As for parallel
>> >> > > > >> drives, see if
>> >> > > > >> you
>> >> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive 
>> >> > > > >> that
>> >> > > > >> works off
>> >> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
>> >> > > > >>
>> >> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> > > > >> "She said it was either her or the ham radio.  Over."
>> >> > > > >>
>> >> > > > >>
>> >> > > > >> ----- Original Message ----- 
>> >> > > > >> From: "techtalklive@" <doug@>
>> >> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
>> >> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure 
>> >> > > > >> modes?
>> >> > > > >>
>> >> > > > >>
>> >> > > > >> >
>> >> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has
>> >> > > > >> > limited
>> >> > > > >> > driver
>> >> > > > >> > support.
>> >> > > > >> > Other similar devices don't seem to be on the used market
>> >> > > > >> > right not.
>> >> > > > >> > I'm also considering a parallel based disk drive at this
>> >> > > > >> > point.
>> >> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I
>> >> > > > >> > think... I
>> >> > > > >> > didn't
>> >> > > > >> > actually run the numbers.
>> >> > > > >> > DC
>> >> > > > >> >
>> >> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
>> >> > > > >> > <n8euj@> wrote:
>> >> > > > >> >>
>> >> > > > >> >> I don't think I'd even bother with the serial port.  You
>> >> > > > >> >> might get
>> >> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs, 
>> >> > > > >> >> but
>> >> > > > >> >> even a
>> >> > > > >> >> 16550AFN
>> >> > > > >> >> will only give you 115,200bps.  And, if it's an 
>> >> > > > >> >> 8250A/16450
>> >> > > > >> >> UART, you
>> >> > > > >> >> have
>> >> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the
>> >> > > > >> >> standard
>> >> > > > >> >> parallel
>> >> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad
>> >> > > > >> >> faster with
>> >> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of 
>> >> > > > >> >> a
>> >> > > > >> >> GRiD, but
>> >> > > > >> >> even
>> >> > > > >> >> if you could directly tie in to the ISA bus, it would be
>> >> > > > >> >> tough.
>> >> > > > >> >>
>> >> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> > > > >> >> "She said it was either her or the ham radio.  Over."
>> >> > > > >> >>
>> >> > > > >> >>
>> >> > > > >> >> ----- Original Message ----- 
>> >> > > > >> >> From: "Androgenoide" <androgenoide@>
>> >> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
>> >> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
>> >> > > > >> >> modes?
>> >> > > > >> >>
>> >> > > > >> >>
>> >> > > > >> >> > The only real obstacle to DOS networking with the Grid 
>> >> > > > >> >> > is
>> >> > > > >> >> > finding an
>> >> > > > >> >> > Ethernet adapter that will work through either the 
>> >> > > > >> >> > serial
>> >> > > > >> >> > or
>> >> > > > >> >> > parallel
>> >> > > > >> >> > ports.   I used the Xircom on the parallel port because 
>> >> > > > >> >> > I
>> >> > > > >> >> > had one at
>> >> > > > >> >> > the
>> >> > > > >> >> > time.   I've got a serial device server now that would
>> >> > > > >> >> > probably work
>> >> > > > >> >> > too
>> >> > > > >> >> > but I've got too much going on at the moment to dig out 
>> >> > > > >> >> > a
>> >> > > > >> >> > Grid just
>> >> > > > >> >> > to
>> >> > > > >> >> > see
>> >> > > > >> >> > what would be required.   Either of those solutions 
>> >> > > > >> >> > would
>> >> > > > >> >> > be limited
>> >> > > > >> >> > by
>> >> > > > >> >> > the speed of the ports(and the Grid itself), of course.
>> >> > > > >> >> > Gigabit
>> >> > > > >> >> > speeds
>> >> > > > >> >> > are out of the question!
>> >> > > > >> >> > Another thought... The guy who put together the Techworm
>> >> > > > >> >> > boot disk
>> >> > > > >> >> > also
>> >> > > > >> >> > had one called Networm, a single floppy that could do a
>> >> > > > >> >> > dialup
>> >> > > > >> >> > internet
>> >> > > > >> >> > connection... (if you still have access to a dialup
>> >> > > > >> >> > service... if
>> >> > > > >> >> > not,
>> >> > > > >> >> > Budget Dial Up has a prepaid service that allows you to 
>> >> > > > >> >> > buy
>> >> > > > >> >> > just a
>> >> > > > >> >> > few
>> >> > > > >> >> > hours at a time).
>> >> > > > >> >> >
>> >> > > > >> >> > Generally speaking, if an old machine has either a 
>> >> > > > >> >> > serial
>> >> > > > >> >> > or
>> >> > > > >> >> > parallel
>> >> > > > >> >> > port
>> >> > > > >> >> > and you can get it to boot into DOS, there is always a 
>> >> > > > >> >> > way
>> >> > > > >> >> > to
>> >> > > > >> >> > transfer
>> >> > > > >> >> > files to another machine.   Even if it has no floppy you
>> >> > > > >> >> > can use
>> >> > > > >> >> > another
>> >> > > > >> >> > DOS machine running Laplink.  If it does have a floppy
>> >> > > > >> >> > there are a
>> >> > > > >> >> > lot
>> >> > > > >> >> > of
>> >> > > > >> >> > file transfer programs out there, from Kermit to the
>> >> > > > >> >> > original
>> >> > > > >> >> > version
>> >> > > > >> >> > of
>> >> > > > >> >> > Procomm that will fit on a single floppy.
>> >> > > > >> >> >
>> >> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of
>> >> > > > >> >> > RAM... a
>> >> > > > >> >> > full
>> >> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95 
>> >> > > > >> >> > would
>> >> > > > >> >> > be
>> >> > > > >> >> > tricky
>> >> > > > >> >> > and
>> >> > > > >> >> > would require some hardware tweaks even to make a slow
>> >> > > > >> >> > machine...
>> >> > > > >> >> > kind
>> >> > > > >> >> > of
>> >> > > > >> >> > an extreme project.   I've heard of a Linux distro that
>> >> > > > >> >> > will fit on
>> >> > > > >> >> > a
>> >> > > > >> >> > single floppy and run on systems with limited resources
>> >> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but
>> >> > > > >> >> > even that
>> >> > > > >> >> > one
>> >> > > > >> >> > seems to want 4MB of RAM.
>> >> > > > >> >> >
>> >> > > > >> >> > There are plenty of people on the web who have too much
>> >> > > > >> >> > time on
>> >> > > > >> >> > their
>> >> > > > >> >> > hands and are still playing with machines even older 
>> >> > > > >> >> > than
>> >> > > > >> >> > the
>> >> > > > >> >> > Grid...
>> >> > > > >> >> > You
>> >> > > > >> >> > can still buy new after-market accessories for 
>> >> > > > >> >> > Commodores,
>> >> > > > >> >> > for
>> >> > > > >> >> > example,
>> >> > > > >> >> > so
>> >> > > > >> >> > don't assume that there are no new solutions to old
>> >> > > > >> >> > problems.
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@> 
>> >> > > > >> >> > wrote:
>> >> > > > >> >> >>
>> >> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >> > > > >> >> >> >
>> >> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the
>> >> > > > >> >> >> > parallel
>> >> > > > >> >> >> > port
>> >> > > > >> >> >> > to
>> >> > > > >> >> >> > a NIC... although I've been wondering lately if it 
>> >> > > > >> >> >> > might
>> >> > > > >> >> >> > not have
>> >> > > > >> >> >> > made
>> >> > > > >> >> >> > equally good sense to use a device server on the 
>> >> > > > >> >> >> > serial
>> >> > > > >> >> >> > port...?
>> >> > > > >> >> >> > And,
>> >> > > > >> >> >> > of course, the Arachne browser... not many choices 
>> >> > > > >> >> >> > for a
>> >> > > > >> >> >> > DOS
>> >> > > > >> >> >> > browser
>> >> > > > >> >> >> > are there? I used it to check my Yahoo web mail and 
>> >> > > > >> >> >> > I'll
>> >> > > > >> >> >> > have to
>> >> > > > >> >> >> > say
>> >> > > > >> >> >> > that it gave a whole new dimension of meaning to the
>> >> > > > >> >> >> > word "slow."
>> >> > > > >> >> >> > Go
>> >> > > > >> >> >> > ahead, make a pot of tea while it's loading that 
>> >> > > > >> >> >> > page,
>> >> > > > >> >> >> > it will be
>> >> > > > >> >> >> > a
>> >> > > > >> >> >> > while.
>> >> > > > >> >> >> >
>> >> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran 
>> >> > > > >> >> >> > into a
>> >> > > > >> >> >> > web page
>> >> > > > >> >> >> > last
>> >> > > > >> >> >> > week of a guy who was competing with a friend to see 
>> >> > > > >> >> >> > who
>> >> > > > >> >> >> > could
>> >> > > > >> >> >> > force
>> >> > > > >> >> >> > Windows XP to run with the least resources. It won't
>> >> > > > >> >> >> > install
>> >> > > > >> >> >> > unless
>> >> > > > >> >> >> > it
>> >> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor 
>> >> > > > >> >> >> > but,
>> >> > > > >> >> >> > once
>> >> > > > >> >> >> > installed
>> >> > > > >> >> >> > you can remove RAM and underclock the machine... He 
>> >> > > > >> >> >> > said
>> >> > > > >> >> >> > he got
>> >> > > > >> >> >> > one
>> >> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock 
>> >> > > > >> >> >> > and
>> >> > > > >> >> >> > it took a
>> >> > > > >> >> >> > half
>> >> > > > >> >> >> > hour to boot.
>> >> > > > >> >> >> >
>> >> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I
>> >> > > > >> >> >> > have nothing
>> >> > > > >> >> >> > else
>> >> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can 
>> >> > > > >> >> >> > get
>> >> > > > >> >> >> > online
>> >> > > > >> >> >> > with
>> >> > > > >> >> >> > a
>> >> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that
>> >> > > > >> >> >> > Contiki
>> >> > > > >> >> >> > OS/browser
>> >> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
>> >> > > > >> >> >> >
>> >> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> > > > >> >> >> > "techtalklive@"
>> >> > > > >> >> >> > <doug@> wrote:
>> >> > > > >> >> >> > >
>> >> > > > >> >> >> > > Like the hack job? :O
>> >> > > > >> >> >> > >
>> >> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone
>> >> > > > >> >> >> > > swapped
>> >> > > > >> >> >> > > screes?
>> >> > > > >> >> >> > > Should I take the kbd apart and clean it (will that
>> >> > > > >> >> >> > > likely
>> >> > > > >> >> >> > > fix it?) or look for a replacement?
>> >> > > > >> >> >> > >
>> >> > > > >> >> >> > > So what can I do with this thing if I put more mem 
>> >> > > > >> >> >> > > in
>> >> > > > >> >> >> > > it?
>> >> > > > >> >> >> > > Its all accessed funky through expaned mem methods,
>> >> > > > >> >> >> > > isn't it?
>> >> > > > >> >> >> > > I have a coprocessor I could put in this but not 
>> >> > > > >> >> >> > > sure
>> >> > > > >> >> >> > > of
>> >> > > > >> >> >> > > the point there.
>> >> > > > >> >> >> > >
>> >> > > > >> >> >> > > I think I might like to accomplish getting it on 
>> >> > > > >> >> >> > > the
>> >> > > > >> >> >> > > web.
>> >> > > > >> >> >> > > I'd need the LAN hardware I guess.
>> >> > > > >> >> >> > > Any other ideas?
>> >> > > > >> >> >> > >
>> >> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two
>> >> > > > >> >> >> > > contact on
>> >> > > > >> >> >> > > it that mate inside the cavity. But one of the two
>> >> > > > >> >> >> > > spring
>> >> > > > >> >> >> > > contacts
>> >> > > > >> >> >> > > inside is "rubberized", so only the one contact 
>> >> > > > >> >> >> > > hits
>> >> > > > >> >> >> > > metal to
>> >> > > > >> >> >> > > metal.
>> >> > > > >> >> >> > > So the P.S. only works using the cord to go from 
>> >> > > > >> >> >> > > the
>> >> > > > >> >> >> > > P.S. into
>> >> > > > >> >> >> > > the
>> >> > > > >> >> >> > > radial DC jack. Strange?
>> >> > > > >> >> >> > >
>> >> > > > >> >> >> > > DC
>> >> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> >> > > > >> >> >> > <Jeriddian@>
>> >> > > > >> >> >> > wrote:
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > > > Great job, Doug!
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of
>> >> > > > >> >> >> > > > these
>> >> > > > >> >> >> > > > beautiful
>> >> > > > >> >> >> > machines? And yep, that's the way it works.
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > > > Once you restore battery power to the 1287A, the
>> >> > > > >> >> >> > > > CMOS
>> >> > > > >> >> >> > > > registers
>> >> > > > >> >> >> > are again active. It's just that they're filled with
>> >> > > > >> >> >> > nonsense, so
>> >> > > > >> >> >> > the
>> >> > > > >> >> >> > computer tells you the clock had stopped (which it 
>> >> > > > >> >> >> > did),
>> >> > > > >> >> >> > and
>> >> > > > >> >> >> > simply
>> >> > > > >> >> >> > prompts you to reset the time. Once you do that and
>> >> > > > >> >> >> > reboot,
>> >> > > > >> >> >> > everything's hunky-dory.
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > > > You can probably find some more 256K sticks
>> >> > > > >> >> >> > > > somewhere and
>> >> > > > >> >> >> > > > upgrade
>> >> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to 
>> >> > > > >> >> >> > Ver.
>> >> > > > >> >> >> > 6.22.
>> >> > > > >> >> >> > Great
>> >> > > > >> >> >> > to
>> >> > > > >> >> >> > hear the HDD is good too.
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on
>> >> > > > >> >> >> > > > sale on ebay
>> >> > > > >> >> >> > > > that
>> >> > > > >> >> >> > I looked at, however it was strange. It was 
>> >> > > > >> >> >> > definitely
>> >> > > > >> >> >> > branded a
>> >> > > > >> >> >> > 1520,
>> >> > > > >> >> >> > and advertised that way, but the flip up screen said 
>> >> > > > >> >> >> > it
>> >> > > > >> >> >> > was a 386
>> >> > > > >> >> >> > machine. I decided to get it, and it was only about 
>> >> > > > >> >> >> > $90
>> >> > > > >> >> >> > with
>> >> > > > >> >> >> > shipping.
>> >> > > > >> >> >> > When I got the machine, I was very excited when it 
>> >> > > > >> >> >> > began
>> >> > > > >> >> >> > to post,
>> >> > > > >> >> >> > because I got a full 8MB of RAM! It of course 
>> >> > > > >> >> >> > displayed
>> >> > > > >> >> >> > the
>> >> > > > >> >> >> > configuration error 02 indicating the CMOS battery 
>> >> > > > >> >> >> > was
>> >> > > > >> >> >> > dead. So I
>> >> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A
>> >> > > > >> >> >> > model, but
>> >> > > > >> >> >> > that
>> >> > > > >> >> >> > was
>> >> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I 
>> >> > > > >> >> >> > had a
>> >> > > > >> >> >> > spare.
>> >> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard 
>> >> > > > >> >> >> > off
>> >> > > > >> >> >> > to
>> >> > > > >> >> >> > discover
>> >> > > > >> >> >> > that not only was this really a 386 machine (a 1530),
>> >> > > > >> >> >> > but it also
>> >> > > > >> >> >> > had
>> >> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced 
>> >> > > > >> >> >> > the
>> >> > > > >> >> >> > 1287A and
>> >> > > > >> >> >> > this
>> >> > > > >> >> >> > solved the configuration error just fine. But alas, I
>> >> > > > >> >> >> > didn't get
>> >> > > > >> >> >> > a
>> >> > > > >> >> >> > triple crown winner here. The Conner drive was
>> >> > > > >> >> >> > definitely dead.
>> >> > > > >> >> >> > But
>> >> > > > >> >> >> > heck, getting another HDD is easy compared to the 
>> >> > > > >> >> >> > other
>> >> > > > >> >> >> > benefits!
>> >> > > > >> >> >> > The
>> >> > > > >> >> >> > original owner of this machine definitely took care 
>> >> > > > >> >> >> > of
>> >> > > > >> >> >> > it.
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > > > Phil
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> > > > >> >> >> > wrote:
>> >> > > > >> >> >> > > > >
>> >> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
>> >> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and 
>> >> > > > >> >> >> > > > > ran
>> >> > > > >> >> >> > > > > the wires
>> >> > > > >> >> >> > > > > to
>> >> > > > >> >> >> > > > > a
>> >> > > > >> >> >> > convenient place for the battery. Upon power up it 
>> >> > > > >> >> >> > said
>> >> > > > >> >> >> > > > > that the RTC was stopped, and it needed 
>> >> > > > >> >> >> > > > > setting.
>> >> > > > >> >> >> > > > > The "stopped" message threw me, I thought
>> >> > > > >> >> >> > > > > something was
>> >> > > > >> >> >> > > > > wrong
>> >> > > > >> >> >> > > > > with
>> >> > > > >> >> >> > > > > the chip. It took an F1 to continue and went 
>> >> > > > >> >> >> > > > > right
>> >> > > > >> >> >> > > > > through
>> >> > > > >> >> >> > > > > POST
>> >> > > > >> >> >> > and Autoexec.
>> >> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory 
>> >> > > > >> >> >> > > > > set
>> >> > > > >> >> >> > > > > the RTC.
>> >> > > > >> >> >> > > > > Now it boots cleanly.
>> >> > > > >> >> >> > > > > Has Lotus123 on the HD.
>> >> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"...
>> >> > > > >> >> >> > > > > page 2!
>> >> > > > >> >> >> > > > > The only remaining issue is that a few keys on 
>> >> > > > >> >> >> > > > > the
>> >> > > > >> >> >> > > > > keyboard
>> >> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external
>> >> > > > >> >> >> > > > > kbd
>> >> > > > >> >> >> > > > > everything
>> >> > > > >> >> >> > > > > works.
>> >> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01 
>> >> > > > >> >> >> > > > > 386
>> >> > > > >> >> >> > > > > with 1MB
>> >> > > > >> >> >> > > > > RAM,
>> >> > > > >> >> >> > > > > a
>> >> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some 
>> >> > > > >> >> >> > smokin'
>> >> > > > >> >> >> > system!
>> >> > > > >> >> >> > > > >
>> >> > > > >> >> >> > > > >
>> >> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> > > > >> >> >> > wrote:
>> >> > > > >> >> >> > > > > >
>> >> > > > >> >> >> > > > > > Thanks so much that was great info. I had no
>> >> > > > >> >> >> > > > > > idea on the
>> >> > > > >> >> >> > > > > > X2
>> >> > > > >> >> >> > > > > > being a rating. May have to try it without 
>> >> > > > >> >> >> > > > > > them
>> >> > > > >> >> >> > > > > > just to
>> >> > > > >> >> >> > > > > > make sure the rest of it is still good.
>> >> > > > >> >> >> > > > > >
>> >> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> > > > >> >> >> > "fullsizewagon"
>> >> > > > >> >> >> > <andrebakken@> wrote:
>> >> > > > >> >> >> > > > > > >
>> >> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes 
>> >> > > > >> >> >> > > > > > > a
>> >> > > > >> >> >> > > > > > > big
>> >> > > > >> >> >> > > > > > > difference.
>> >> > > > >> >> >> > The X2 also signifies they're an enhanced type meant 
>> >> > > > >> >> >> > to
>> >> > > > >> >> >> > go
>> >> > > > >> >> >> > directly
>> >> > > > >> >> >> > across the mains. Be sure to get X2 rated 
>> >> > > > >> >> >> > replacements.
>> >> > > > >> >> >> > > > > > > The PSU will work without those cap's in
>> >> > > > >> >> >> > > > > > > place, but
>> >> > > > >> >> >> > > > > > > will
>> >> > > > >> >> >> > radiate more interference/noise out onto the mains.
>> >> > > > >> >> >> > > > > > >
>> >> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> > > > >> >> >> > wrote:
>> >> > > > >> >> >> > > > > > > >
>> >> > > > >> >> >> > > > > > > > There are two in there that are the same.
>> >> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
>> >> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square
>> >> > > > >> >> >> > > > > > > > package.
>> >> > > > >> >> >> > > > > > > > The bottom is clear so you can see the
>> >> > > > >> >> >> > > > > > > > radial shape.
>> >> > > > >> >> >> > > > > > > > I have them out already.
>> >> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
>> >> > > > >> >> >> > > > > > > >
>> >> > > > >> >> >> > > > > > > > DC
>> >> > > > >> >> >> > > > > ; > >
>> >> > > > >> >> >> > > > > > > >
>> >> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
>> >> > > > >> >> >> > <Jeriddian@>
>> >> > > > >> >> >> > wrote:
>> >> > > > >> >> >> > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > Good Find, DC
>> >> > > > >> >> >> > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > I guess they got burnt to the point 
>> >> > > > >> >> >> > > > > > > > > where
>> >> > > > >> >> >> > > > > > > > > you can't
>> >> > > > >> >> >> > identify the capcity amount. Could you give me the
>> >> > > > >> >> >> > output voltage
>> >> > > > >> >> >> > and
>> >> > > > >> >> >> > amperage? I'll look through my units and see if I can
>> >> > > > >> >> >> > identify
>> >> > > > >> >> >> > them
>> >> > > > >> >> >> > for you.
>> >> > > > >> >> >> > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > Phil
>> >> > > > >> >> >> > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> > > > >> >> >> > wrote:
>> >> > > > >> >> >> > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like 
>> >> > > > >> >> >> > > > > > > > > > a
>> >> > > > >> >> >> > > > > > > > > > failed cap
>> >> > > > >> >> >> > > > > > > > > > in
>> >> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
>> >> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
>> >> > > > >> >> >> > > > > > > > > > Any identification tips welcome, 
>> >> > > > >> >> >> > > > > > > > > > thanks.
>> >> > > > >> >> >> > > > > > > > > > There appears to be two of the same
>> >> > > > >> >> >> > > > > > > > > > caps, would
>> >> > > > >> >> >> > replace both
>> >> > > > >> >> >> > > > > > > > > > of course.
>> >> > > > >> >> >> > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > > DC
>> >> > > > >> >> >> > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> > > > >> >> >> > wrote:
>> >> > > > >> >> >> > > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > > > I am considering tackling the 
>> >> > > > >> >> >> > > > > > > > > > > repair
>> >> > > > >> >> >> > > > > > > > > > > of a 1530
>> >> > > > >> >> >> > > > > > > > > > > that
>> >> > > > >> >> >> > > > > > > > > > > does not respond to the power 
>> >> > > > >> >> >> > > > > > > > > > > switch.
>> >> > > > >> >> >> > > > > > > > > > > The power
>> >> > > > >> >> >> > > > > > > > > > > supply
>> >> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think 
>> >> > > > >> >> >> > > > > > > > > > > its
>> >> > > > >> >> >> > > > > > > > > > > fine
>> >> > > > >> >> >> > (unfortunately,
>> >> > > > >> >> >> > > > > > > > > > > that would have been an easy 
>> >> > > > >> >> >> > > > > > > > > > > problem
>> >> > > > >> >> >> > > > > > > > > > > isolation!)
>> >> > > > >> >> >> > > > > > > > > > > So its something internal. I have 
>> >> > > > >> >> >> > > > > > > > > > > the
>> >> > > > >> >> >> > > > > > > > > > > service
>> >> > > > >> >> >> > > > > > > > > > > manuals
>> >> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd 
>> >> > > > >> >> >> > > > > > > > > > > get
>> >> > > > >> >> >> > > > > > > > > > > some
>> >> > > > >> >> >> > > > > > > > > > > pointers
>> >> > > > >> >> >> > form
>> >> > > > >> >> >> > > > > > > > > > > folks who have already performed 
>> >> > > > >> >> >> > > > > > > > > > > cold
>> >> > > > >> >> >> > > > > > > > > > > stone
>> >> > > > >> >> >> > > > > > > > > > > dead
>> >> > > > >> >> >> > diagnosis.
>> >> > > > >> >> >> > > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this
>> >> > > > >> >> >> > > > > > > > > > > very clean
>> >> > > > >> >> >> > > > > > > > > > > 1530
>> >> > > > >> >> >> > > > > > > > > > > will
>> >> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
>> >> > > > >> >> >> > > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > > > Thanks in advance,
>> >> > > > >> >> >> > > > > > > > > > > DC
>> >> > > > >> >> >> > > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > > >
>> >> > > > >> >> >> > > > > > > > >
>> >> > > > >> >> >> > > > > > > >
>> >> > > > >> >> >> > > > > > >
>> >> > > > >> >> >> > > > > >
>> >> > > > >> >> >> > > > >
>> >> > > > >> >> >> > > >
>> >> > > > >> >> >> > >
>> >> > > > >> >> >> >
>> >> > > > >> >> >>
>> >> > > > >> >> >> Since we are on the topic of TCP does anyone have a
>> >> > > > >> >> >> formula stashed
>> >> > > > >> >> >> that
>> >> > > > >> >> >> can be easily had to run say serial (probably ppp) from
>> >> > > > >> >> >> something
>> >> > > > >> >> >> like
>> >> > > > >> >> >> a
>> >> > > > >> >> >> small system like the raspberry pi serially to a system
>> >> > > > >> >> >> with dos
>> >> > > > >> >> >> and a
>> >> > > > >> >> >> stack?  It's been so long since I messed with dos
>> >> > > > >> >> >> environment
>> >> > > > >> >> >> networking
>> >> > > > >> >> >> I forget.
>> >> > > > >> >> >>
>> >> > > > >> >> >> I think windows of some sort had trumpet to handle part 
>> >> > > > >> >> >> of
>> >> > > > >> >> >> the
>> >> > > > >> >> >> equation,
>> >> > > > >> >> >> but I don' t have any references right now over a dos
>> >> > > > >> >> >> stack.
>> >> > > > >> >> >>
>> >> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98
>> >> > > > >> >> >> would be
>> >> > > > >> >> >> better,
>> >> > > > >> >> >> but I don't know if the hardware here would be up to 
>> >> > > > >> >> >> those
>> >> > > > >> >> >> os's.
>> >> > > > >> >> >>
>> >> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be
>> >> > > > >> >> >> nice too.
>> >> > > > >> >> >> I'm
>> >> > > > >> >> >> asking for everything here.  Objective is to have
>> >> > > > >> >> >> something that
>> >> > > > >> >> >> could
>> >> > > > >> >> >> suck off or load a disk image with a floppy boot.  I
>> >> > > > >> >> >> suspect it was
>> >> > > > >> >> >> a
>> >> > > > >> >> >> difficult thing to get going in the day, though, and 
>> >> > > > >> >> >> even
>> >> > > > >> >> >> wors now.
>> >> > > > >> >> >>
>> >> > > > >> >> >> jim
>> >> > > > >> >> >> >
>> >> > > > >> >> >> > ,___
>> >> > > > >> >> >> >
>> >> > > > >> >> >>
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> > ------------------------------------
>> >> > > > >> >> >
>> >> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! 
>> >> > > > >> >> > Groups
>> >> > > > >> >> > Links
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >> >
>> >> > > > >> >>
>> >> > > > >> >
>> >> > > > >> >
>> >> > > > >> >
>> >> > > > >> >
>> >> > > > >> > ------------------------------------
>> >> > > > >> >
>> >> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
>> >> > Links
>> >> > > > >> >
>> >> > > > >> >
>> >> > > > >> >
>> >> > > > >>
>> >> > > > >
>> >> > > > >
>> >> > > > >
>> >> > > > >
>> >> > > > > ------------------------------------
>> >> > > > >
>> >> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups 
>> >> > > > > Links
>> >> > > > >
>> >> > > > >
>> >> > > > >
>> >> > > >
>> >> > >
>> >> >
>> >>
>> >>
>> >>
>> >>
>> >> ------------------------------------
>> >>
>> >> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >>
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2591
Date: Sun, 21 Oct 2012 18:34:29 -0000
From: "jeriddian"
Subject: Re: Typical 1500 series failure modes?

Accessing the bus might not be that hard. Shawn was able to hook up a regular ISA cable that had both the Master and Slave connectors, which he was using to try and boot the computer from a flash drive and it could see the regular hard drive, I believe. So theoretically you could use the second connnector for that purpose, but then again hooking up the AMI card is another matter. I do have a couple of 1535's which have the extended bus connector going through the bottom of the computer and hook up to an axternal bay compartment which fits under the bottom of the computer and can hook up two separate external cards like that. I've never messed with it though. They're also in storage right now, so I can't access them.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>
> I wonder if it would be possible to rig up an 8-bit ISA slot somewhere
> inside the 1530 so you could use one of those AMI cards.  Finding one would
> be tough, though.
>
> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> "She said it was either her or the ham radio.  Over."
>
>
> ----- Original Message -----
> From: "techtalklive@..." <doug@...>
> To: <RuGRiD-Laptop@yahoogroups.com>
> Sent: Saturday, October 20, 2012 10:40 PM
> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>
>
> > I'm going to take a shot at shoe-horning some low height 1MB SIMMs
> > in their.  Let ya'll know how it goes.
> > That Megatrends card sounds familiar; I suspect I worried about
> > drive support way back in the day.  Actually drive support
> > is also an issue with these 1530s.
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >>
> >> Wow.  And, I suppose if you could find SIPPs from, say, Crucial or
> >> Corsair,
> >> they'd charge you a mint.  I bought a 32MB FP SIMM for the first laser
> >> printer I owned, and Crucial wanted about a buck and a half a meg.  Yeah,
> >> that Paradox adapter would be swell.  That may have gone the way of the
> >> $50
> >> card that American Megatrends used to make that would plug into any ISA
> >> slot
> >> and patch the BIOS so that you could use any size hard drive by any
> >> manufacturer.  Lots of good ideas like that, but they just sort of faded
> >> away.
> >>
> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> "She said it was either her or the ham radio.  Over."
> >>
> >>
> >> ----- Original Message -----
> >> From: "jeriddian" <Jeriddian@>
> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> Sent: Thursday, October 18, 2012 9:41 PM
> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >>
> >>
> >> > There was a company that at one time made an adaptation for the GRiD's
> >> > called paradox in which they made an adapter that fit into the pin
> >> > slots
> >> > (I think. I've never actually seen it, but this is what I heard) and
> >> > into
> >> > which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for
> >> > this,
> >> > but never found it.  That would be cool to find and use.
> >> >
> >> > The problems with the memory adaptation is ther is very, very little
> >> > room
> >> > for the memory to fit. The MoBo was actually designed to fit the
> >> > smallest
> >> > RAM stick they made at the time. You have to use a low profile SIPP,
> >> > one
> >> > with no extra PC Board material off to the sides. You could try laying
> >> > the
> >> > wired SIMM's over, but I looked at trying to do that with high profile
> >> > SIPP's and there really isn't any room to do that either. I think if
> >> > someone coud come up with an adapter like the paradox I described that
> >> > fit
> >> > 2 4 MB sticks to run in the eight rows of holes, that would likely be
> >> > the
> >> > best answer.
> >> >
> >> > Phil
> >> >
> >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >> >>
> >> >> If you made the leads long enough to lay the SIMMs over on their side,
> >> >> and insulated them so that they wouldn't short anything out, would you
> >> >> have any lead dress problems, such as EMI/RFI, stray capacitance or
> >> >> inductance, etc.?  And, if so, wonder if installing ferrite beads on
> >> >> the
> >> >> leads would help.
> >> >>
> >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> >> "She said it was either her or the ham radio.  Over."
> >> >>
> >> >>
> >> >> ----- Original Message -----
> >> >> From: Shawnerz
> >> >> To: rugrid-laptop@yahoogroups.com
> >> >> Sent: Wednesday, October 17, 2012 12:52 PM
> >> >> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> >>
> >> >>
> >> >>
> >> >>
> >> >> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.
> >> >> Once I soldered the pins on, the module height would not allow the
> >> >> cover
> >> >> to go on.
> >> >> Your results may vary,
> >> >> -Shawn
> >> >>
> >> >>
> >> >>
> >> >> -------- Original message --------
> >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> >> From: "techtalklive@" <doug@>
> >> >> To: RuGRiD-Laptop@yahoogroups.com
> >> >> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> >>
> >> >>
> >> >>
> >> >>
> >> >> Well that sounds promising.  The only thing that would
> >> >> top that would be a native SCSI attached to the bus connectors
> >> >> in the accessory port.  A ParPort one would do in the meantime.
> >> >> Thanks!
> >> >>
> >> >> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> >> >> Anyone know the mem speed?  Hate to take the thing apart right
> >> >> now to find out.
> >> >> Thanks!
> >> >>
> >> >> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >> >> >
> >> >> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked
> >> >> > down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the
> >> >> > mobo
> >> >> > clocked down to 12.5 MHz.
> >> >> >
> >> >> > The problem with trying to access a higher capacity drive from the
> >> >> > parallel port is that DOS is not capable of handling a large number
> >> >> > of
> >> >> > addresses. Of course, SCSI then is an option in doing that. I have a
> >> >> > portable SCSI device which hooks into the parallel port made by
> >> >> > Adaptec, called the Mini-SCSI which will allow the computer to
> >> >> > connect
> >> >> > to a larger drive such as a CDROM, large HDD, ZIP drive, or similar
> >> >> > device by a SCSI-II connection. The SCSI connector has a parallel
> >> >> > port
> >> >> > on it that allows you to throughput a connection to your printer. I
> >> >> > think that the maximum HDD capacity I can use with this thing is 2T.
> >> >> >
> >> >> > Phil
> >> >> >
> >> >> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >> >> > >
> >> >> > > I used to have all that stuff.  Today I think I can run a dos
> >> >> > > program
> >> >> > > on the GRiD that talks to my trusty TotalCommander on another PC.
> >> >> > > As I might have mentioned in another post, if I could get
> >> >> > > another PC to appear as a mounted drive to the GRiD I'd be in
> >> >> > > real fat city.  Then I'd have the machine wide open to the rest of
> >> >> > > the world.
> >> >> > > Any ideas there?
> >> >> > >
> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@>
> >> >> > > wrote:
> >> >> > > >
> >> >> > > > Good luck with the Backpack stuff.
> >> >> > > >
> >> >> > > > There's a book called "Hot Links", which was produced by the
> >> >> > > > same
> >> >> > > > people
> >> >> > > > that produced LapLink.  In the back of the book is a disk with
> >> >> > > > programs that
> >> >> > > > will let you transfer files, either via null modem cable or
> >> >> > > > LapLink
> >> >> > > > cable.
> >> >> > > > I doubt that the book is still in print, but it might be
> >> >> > > > something
> >> >> > > > to look
> >> >> > > > for.  If you get the book without the disk, let me know, and
> >> >> > > > I'll
> >> >> > > > get you
> >> >> > > > the software.  I can't remember if it lets you map the host
> >> >> > > > drive
> >> >> > > > to the
> >> >> > > > client machine, but that would be cool, if it does that.
> >> >> > > >
> >> >> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> >> > > > "She said it was either her or the ham radio.  Over."
> >> >> > > >
> >> >> > > >
> >> >> > > > ----- Original Message -----
> >> >> > > > From: "techtalklive@" <doug@>
> >> >> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> >> >> > > > Sent: Monday, October 15, 2012 10:47 PM
> >> >> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >> >> > > >
> >> >> > > >
> >> >> > > > > Its a 1530... clock is... I dont know 20Mhz?
> >> >> > > > > Yes checking out Backpacks now. Just collected drivers from
> >> >> > > > > around the web for them and am checking on ebay for
> >> >> > > > > equipment.  I suspect they will work.
> >> >> > > > >
> >> >> > > > > I thought I might take a look to see if there was parallel
> >> >> > > > > port
> >> >> > > > > software that would work like "laplink" to tether to another
> >> >> > > > > PC
> >> >> > > > > but would make a directory/drive on the the host PC appear as
> >> >> > > > > a
> >> >> > > > > drive to
> >> >> > > > > the 1530.
> >> >> > > > >
> >> >> > > > > That would be cool... and avoid purchasing old hardware.
> >> >> > > > >
> >> >> > > > >
> >> >> > > > >
> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
> >> >> > > > > <n8euj@>
> >> >> > > > > wrote:
> >> >> > > > >>
> >> >> > > > >> What's the bus clock of the 1520, for example?  If it's
> >> >> > > > >> 10MHz,
> >> >> > > > >> it *might*
> >> >> > > > >> make it, but it would be breathing hard.  As for parallel
> >> >> > > > >> drives, see if
> >> >> > > > >> you
> >> >> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive
> >> >> > > > >> that
> >> >> > > > >> works off
> >> >> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> >> >> > > > >>
> >> >> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> >> > > > >> "She said it was either her or the ham radio.  Over."
> >> >> > > > >>
> >> >> > > > >>
> >> >> > > > >> ----- Original Message -----
> >> >> > > > >> From: "techtalklive@" <doug@>
> >> >> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> >> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> >> >> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
> >> >> > > > >> modes?
> >> >> > > > >>
> >> >> > > > >>
> >> >> > > > >> >
> >> >> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has
> >> >> > > > >> > limited
> >> >> > > > >> > driver
> >> >> > > > >> > support.
> >> >> > > > >> > Other similar devices don't seem to be on the used market
> >> >> > > > >> > right not.
> >> >> > > > >> > I'm also considering a parallel based disk drive at this
> >> >> > > > >> > point.
> >> >> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I
> >> >> > > > >> > think... I
> >> >> > > > >> > didn't
> >> >> > > > >> > actually run the numbers.
> >> >> > > > >> > DC
> >> >> > > > >> >
> >> >> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
> >> >> > > > >> > <n8euj@> wrote:
> >> >> > > > >> >>
> >> >> > > > >> >> I don't think I'd even bother with the serial port.  You
> >> >> > > > >> >> might get
> >> >> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs,
> >> >> > > > >> >> but
> >> >> > > > >> >> even a
> >> >> > > > >> >> 16550AFN
> >> >> > > > >> >> will only give you 115,200bps.  And, if it's an
> >> >> > > > >> >> 8250A/16450
> >> >> > > > >> >> UART, you
> >> >> > > > >> >> have
> >> >> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the
> >> >> > > > >> >> standard
> >> >> > > > >> >> parallel
> >> >> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad
> >> >> > > > >> >> faster with
> >> >> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of
> >> >> > > > >> >> a
> >> >> > > > >> >> GRiD, but
> >> >> > > > >> >> even
> >> >> > > > >> >> if you could directly tie in to the ISA bus, it would be
> >> >> > > > >> >> tough.
> >> >> > > > >> >>
> >> >> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> >> >> > > > >> >> "She said it was either her or the ham radio.  Over."
> >> >> > > > >> >>
> >> >> > > > >> >>
> >> >> > > > >> >> ----- Original Message -----
> >> >> > > > >> >> From: "Androgenoide" <androgenoide@>
> >> >> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> >> >> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> >> >> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
> >> >> > > > >> >> modes?
> >> >> > > > >> >>
> >> >> > > > >> >>
> >> >> > > > >> >> > The only real obstacle to DOS networking with the Grid
> >> >> > > > >> >> > is
> >> >> > > > >> >> > finding an
> >> >> > > > >> >> > Ethernet adapter that will work through either the
> >> >> > > > >> >> > serial
> >> >> > > > >> >> > or
> >> >> > > > >> >> > parallel
> >> >> > > > >> >> > ports.   I used the Xircom on the parallel port because
> >> >> > > > >> >> > I
> >> >> > > > >> >> > had one at
> >> >> > > > >> >> > the
> >> >> > > > >> >> > time.   I've got a serial device server now that would
> >> >> > > > >> >> > probably work
> >> >> > > > >> >> > too
> >> >> > > > >> >> > but I've got too much going on at the moment to dig out
> >> >> > > > >> >> > a
> >> >> > > > >> >> > Grid just
> >> >> > > > >> >> > to
> >> >> > > > >> >> > see
> >> >> > > > >> >> > what would be required.   Either of those solutions
> >> >> > > > >> >> > would
> >> >> > > > >> >> > be limited
> >> >> > > > >> >> > by
> >> >> > > > >> >> > the speed of the ports(and the Grid itself), of course.
> >> >> > > > >> >> > Gigabit
> >> >> > > > >> >> > speeds
> >> >> > > > >> >> > are out of the question!
> >> >> > > > >> >> > Another thought... The guy who put together the Techworm
> >> >> > > > >> >> > boot disk
> >> >> > > > >> >> > also
> >> >> > > > >> >> > had one called Networm, a single floppy that could do a
> >> >> > > > >> >> > dialup
> >> >> > > > >> >> > internet
> >> >> > > > >> >> > connection... (if you still have access to a dialup
> >> >> > > > >> >> > service... if
> >> >> > > > >> >> > not,
> >> >> > > > >> >> > Budget Dial Up has a prepaid service that allows you to
> >> >> > > > >> >> > buy
> >> >> > > > >> >> > just a
> >> >> > > > >> >> > few
> >> >> > > > >> >> > hours at a time).
> >> >> > > > >> >> >
> >> >> > > > >> >> > Generally speaking, if an old machine has either a
> >> >> > > > >> >> > serial
> >> >> > > > >> >> > or
> >> >> > > > >> >> > parallel
> >> >> > > > >> >> > port
> >> >> > > > >> >> > and you can get it to boot into DOS, there is always a
> >> >> > > > >> >> > way
> >> >> > > > >> >> > to
> >> >> > > > >> >> > transfer
> >> >> > > > >> >> > files to another machine.   Even if it has no floppy you
> >> >> > > > >> >> > can use
> >> >> > > > >> >> > another
> >> >> > > > >> >> > DOS machine running Laplink.  If it does have a floppy
> >> >> > > > >> >> > there are a
> >> >> > > > >> >> > lot
> >> >> > > > >> >> > of
> >> >> > > > >> >> > file transfer programs out there, from Kermit to the
> >> >> > > > >> >> > original
> >> >> > > > >> >> > version
> >> >> > > > >> >> > of
> >> >> > > > >> >> > Procomm that will fit on a single floppy.
> >> >> > > > >> >> >
> >> >> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of
> >> >> > > > >> >> > RAM... a
> >> >> > > > >> >> > full
> >> >> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95
> >> >> > > > >> >> > would
> >> >> > > > >> >> > be
> >> >> > > > >> >> > tricky
> >> >> > > > >> >> > and
> >> >> > > > >> >> > would require some hardware tweaks even to make a slow
> >> >> > > > >> >> > machine...
> >> >> > > > >> >> > kind
> >> >> > > > >> >> > of
> >> >> > > > >> >> > an extreme project.   I've heard of a Linux distro that
> >> >> > > > >> >> > will fit on
> >> >> > > > >> >> > a
> >> >> > > > >> >> > single floppy and run on systems with limited resources
> >> >> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but
> >> >> > > > >> >> > even that
> >> >> > > > >> >> > one
> >> >> > > > >> >> > seems to want 4MB of RAM.
> >> >> > > > >> >> >
> >> >> > > > >> >> > There are plenty of people on the web who have too much
> >> >> > > > >> >> > time on
> >> >> > > > >> >> > their
> >> >> > > > >> >> > hands and are still playing with machines even older
> >> >> > > > >> >> > than
> >> >> > > > >> >> > the
> >> >> > > > >> >> > Grid...
> >> >> > > > >> >> > You
> >> >> > > > >> >> > can still buy new after-market accessories for 
> >> >> > > > >> >> > Commodores,
> >> >> > > > >> >> > for
> >> >> > > > >> >> > example,
> >> >> > > > >> >> > so
> >> >> > > > >> >> > don't assume that there are no new solutions to old
> >> >> > > > >> >> > problems.
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@>
> >> >> > > > >> >> > wrote:
> >> >> > > > >> >> >>
> >> >> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> >> >> > > > >> >> >> >
> >> >> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the
> >> >> > > > >> >> >> > parallel
> >> >> > > > >> >> >> > port
> >> >> > > > >> >> >> > to
> >> >> > > > >> >> >> > a NIC... although I've been wondering lately if it
> >> >> > > > >> >> >> > might
> >> >> > > > >> >> >> > not have
> >> >> > > > >> >> >> > made
> >> >> > > > >> >> >> > equally good sense to use a device server on the
> >> >> > > > >> >> >> > serial
> >> >> > > > >> >> >> > port...?
> >> >> > > > >> >> >> > And,
> >> >> > > > >> >> >> > of course, the Arachne browser... not many choices
> >> >> > > > >> >> >> > for a
> >> >> > > > >> >> >> > DOS
> >> >> > > > >> >> >> > browser
> >> >> > > > >> >> >> > are there? I used it to check my Yahoo web mail and
> >> >> > > > >> >> >> > I'll
> >> >> > > > >> >> >> > have to
> >> >> > > > >> >> >> > say
> >> >> > > > >> >> >> > that it gave a whole new dimension of meaning to the
> >> >> > > > >> >> >> > word "slow."
> >> >> > > > >> >> >> > Go
> >> >> > > > >> >> >> > ahead, make a pot of tea while it's loading that
> >> >> > > > >> >> >> > page,
> >> >> > > > >> >> >> > it will be
> >> >> > > > >> >> >> > a
> >> >> > > > >> >> >> > while.
> >> >> > > > >> >> >> >
> >> >> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran
> >> >> > > > >> >> >> > into a
> >> >> > > > >> >> >> > web page
> >> >> > > > >> >> >> > last
> >> >> > > > >> >> >> > week of a guy who was competing with a friend to see
> >> >> > > > >> >> >> > who
> >> >> > > > >> >> >> > could
> >> >> > > > >> >> >> > force
> >> >> > > > >> >> >> > Windows XP to run with the least resources. It won't
> >> >> > > > >> >> >> > install
> >> >> > > > >> >> >> > unless
> >> >> > > > >> >> >> > it
> >> >> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor
> >> >> > > > >> >> >> > but,
> >> >> > > > >> >> >> > once
> >> >> > > > >> >> >> > installed
> >> >> > > > >> >> >> > you can remove RAM and underclock the machine... He
> >> >> > > > >> >> >> > said
> >> >> > > > >> >> >> > he got
> >> >> > > > >> >> >> > one
> >> >> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock
> >> >> > > > >> >> >> > and
> >> >> > > > >> >> >> > it took a
> >> >> > > > >> >> >> > half
> >> >> > > > >> >> >> > hour to boot.
> >> >> > > > >> >> >> >
> >> >> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I
> >> >> > > > >> >> >> > have nothing
> >> >> > > > >> >> >> > else
> >> >> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can
> >> >> > > > >> >> >> > get
> >> >> > > > >> >> >> > online
> >> >> > > > >> >> >> > with
> >> >> > > > >> >> >> > a
> >> >> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that
> >> >> > > > >> >> >> > Contiki
> >> >> > > > >> >> >> > OS/browser
> >> >> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> >> >> > > > >> >> >> >
> >> >> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> >> > > > >> >> >> > "techtalklive@"
> >> >> > > > >> >> >> > <doug@> wrote:
> >> >> > > > >> >> >> > >
> >> >> > > > >> >> >> > > Like the hack job? :O
> >> >> > > > >> >> >> > >
> >> >> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone
> >> >> > > > >> >> >> > > swapped
> >> >> > > > >> >> >> > > screes?
> >> >> > > > >> >> >> > > Should I take the kbd apart and clean it (will that
> >> >> > > > >> >> >> > > likely
> >> >> > > > >> >> >> > > fix it?) or look for a replacement?
> >> >> > > > >> >> >> > >
> >> >> > > > >> >> >> > > So what can I do with this thing if I put more mem
> >> >> > > > >> >> >> > > in
> >> >> > > > >> >> >> > > it?
> >> >> > > > >> >> >> > > Its all accessed funky through expaned mem methods,
> >> >> > > > >> >> >> > > isn't it?
> >> >> > > > >> >> >> > > I have a coprocessor I could put in this but not
> >> >> > > > >> >> >> > > sure
> >> >> > > > >> >> >> > > of
> >> >> > > > >> >> >> > > the point there.
> >> >> > > > >> >> >> > >
> >> >> > > > >> >> >> > > I think I might like to accomplish getting it on
> >> >> > > > >> >> >> > > the
> >> >> > > > >> >> >> > > web.
> >> >> > > > >> >> >> > > I'd need the LAN hardware I guess.
> >> >> > > > >> >> >> > > Any other ideas?
> >> >> > > > >> >> >> > >
> >> >> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two
> >> >> > > > >> >> >> > > contact on
> >> >> > > > >> >> >> > > it that mate inside the cavity. But one of the two
> >> >> > > > >> >> >> > > spring
> >> >> > > > >> >> >> > > contacts
> >> >> > > > >> >> >> > > inside is "rubberized", so only the one contact
> >> >> > > > >> >> >> > > hits
> >> >> > > > >> >> >> > > metal to
> >> >> > > > >> >> >> > > metal.
> >> >> > > > >> >> >> > > So the P.S. only works using the cord to go from
> >> >> > > > >> >> >> > > the
> >> >> > > > >> >> >> > > P.S. into
> >> >> > > > >> >> >> > > the
> >> >> > > > >> >> >> > > radial DC jack. Strange?
> >> >> > > > >> >> >> > >
> >> >> > > > >> >> >> > > DC
> >> >> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> >> >> > > > >> >> >> > <Jeriddian@>
> >> >> > > > >> >> >> > wrote:
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > > > Great job, Doug!
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of
> >> >> > > > >> >> >> > > > these
> >> >> > > > >> >> >> > > > beautiful
> >> >> > > > >> >> >> > machines? And yep, that's the way it works.
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > > > Once you restore battery power to the 1287A, the
> >> >> > > > >> >> >> > > > CMOS
> >> >> > > > >> >> >> > > > registers
> >> >> > > > >> >> >> > are again active. It's just that they're filled with
> >> >> > > > >> >> >> > nonsense, so
> >> >> > > > >> >> >> > the
> >> >> > > > >> >> >> > computer tells you the clock had stopped (which it
> >> >> > > > >> >> >> > did),
> >> >> > > > >> >> >> > and
> >> >> > > > >> >> >> > simply
> >> >> > > > >> >> >> > prompts you to reset the time. Once you do that and
> >> >> > > > >> >> >> > reboot,
> >> >> > > > >> >> >> > everything's hunky-dory.
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > > > You can probably find some more 256K sticks
> >> >> > > > >> >> >> > > > somewhere and
> >> >> > > > >> >> >> > > > upgrade
> >> >> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to
> >> >> > > > >> >> >> > Ver.
> >> >> > > > >> >> >> > 6.22.
> >> >> > > > >> >> >> > Great
> >> >> > > > >> >> >> > to
> >> >> > > > >> >> >> > hear the HDD is good too.
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on
> >> >> > > > >> >> >> > > > sale on ebay
> >> >> > > > >> >> >> > > > that
> >> >> > > > >> >> >> > I looked at, however it was strange. It was
> >> >> > > > >> >> >> > definitely
> >> >> > > > >> >> >> > branded a
> >> >> > > > >> >> >> > 1520,
> >> >> > > > >> >> >> > and advertised that way, but the flip up screen said
> >> >> > > > >> >> >> > it
> >> >> > > > >> >> >> > was a 386
> >> >> > > > >> >> >> > machine. I decided to get it, and it was only about
> >> >> > > > >> >> >> > $90
> >> >> > > > >> >> >> > with
> >> >> > > > >> >> >> > shipping.
> >> >> > > > >> >> >> > When I got the machine, I was very excited when it
> >> >> > > > >> >> >> > began
> >> >> > > > >> >> >> > to post,
> >> >> > > > >> >> >> > because I got a full 8MB of RAM! It of course
> >> >> > > > >> >> >> > displayed
> >> >> > > > >> >> >> > the
> >> >> > > > >> >> >> > configuration error 02 indicating the CMOS battery
> >> >> > > > >> >> >> > was
> >> >> > > > >> >> >> > dead. So I
> >> >> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A
> >> >> > > > >> >> >> > model, but
> >> >> > > > >> >> >> > that
> >> >> > > > >> >> >> > was
> >> >> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I
> >> >> > > > >> >> >> > had a
> >> >> > > > >> >> >> > spare.
> >> >> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard
> >> >> > > > >> >> >> > off
> >> >> > > > >> >> >> > to
> >> >> > > > >> >> >> > discover
> >> >> > > > >> >> >> > that not only was this really a 386 machine (a 1530),
> >> >> > > > >> >> >> > but it also
> >> >> > > > >> >> >> > had
> >> >> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced
> >> >> > > > >> >> >> > the
> >> >> > > > >> >> >> > 1287A and
> >> >> > > > >> >> >> > this
> >> >> > > > >> >> >> > solved the configuration error just fine. But alas, I
> >> >> > > > >> >> >> > didn't get
> >> >> > > > >> >> >> > a
> >> >> > > > >> >> >> > triple crown winner here. The Conner drive was
> >> >> > > > >> >> >> > definitely dead.
> >> >> > > > >> >> >> > But
> >> >> > > > >> >> >> > heck, getting another HDD is easy compared to the
> >> >> > > > >> >> >> > other
> >> >> > > > >> >> >> > benefits!
> >> >> > > > >> >> >> > The
> >> >> > > > >> >> >> > original owner of this machine definitely took care
> >> >> > > > >> >> >> > of
> >> >> > > > >> >> >> > it.
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > > > Phil
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> >> > > > >> >> >> > wrote:
> >> >> > > > >> >> >> > > > >
> >> >> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> >> >> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and
> >> >> > > > >> >> >> > > > > ran
> >> >> > > > >> >> >> > > > > the wires
> >> >> > > > >> >> >> > > > > to
> >> >> > > > >> >> >> > > > > a
> >> >> > > > >> >> >> > convenient place for the battery. Upon power up it
> >> >> > > > >> >> >> > said
> >> >> > > > >> >> >> > > > > that the RTC was stopped, and it needed
> >> >> > > > >> >> >> > > > > setting.
> >> >> > > > >> >> >> > > > > The "stopped" message threw me, I thought
> >> >> > > > >> >> >> > > > > something was
> >> >> > > > >> >> >> > > > > wrong
> >> >> > > > >> >> >> > > > > with
> >> >> > > > >> >> >> > > > > the chip. It took an F1 to continue and went
> >> >> > > > >> >> >> > > > > right
> >> >> > > > >> >> >> > > > > through
> >> >> > > > >> >> >> > > > > POST
> >> >> > > > >> >> >> > and Autoexec.
> >> >> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory
> >> >> > > > >> >> >> > > > > set
> >> >> > > > >> >> >> > > > > the RTC.
> >> >> > > > >> >> >> > > > > Now it boots cleanly.
> >> >> > > > >> >> >> > > > > Has Lotus123 on the HD.
> >> >> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"...
> >> >> > > > >> >> >> > > > > page 2!
> >> >> > > > >> >> >> > > > > The only remaining issue is that a few keys on
> >> >> > > > >> >> >> > > > > the
> >> >> > > > >> >> >> > > > > keyboard
> >> >> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external
> >> >> > > > >> >> >> > > > > kbd
> >> >> > > > >> >> >> > > > > everything
> >> >> > > > >> >> >> > > > > works.
> >> >> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01
> >> >> > > > >> >> >> > > > > 386
> >> >> > > > >> >> >> > > > > with 1MB
> >> >> > > > >> >> >> > > > > RAM,
> >> >> > > > >> >> >> > > > > a
> >> >> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some
> >> >> > > > >> >> >> > smokin'
> >> >> > > > >> >> >> > system!
> >> >> > > > >> >> >> > > > >
> >> >> > > > >> >> >> > > > >
> >> >> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> >> > > > >> >> >> > wrote:
> >> >> > > > >> >> >> > > > > >
> >> >> > > > >> >> >> > > > > > Thanks so much that was great info. I had no
> >> >> > > > >> >> >> > > > > > idea on the
> >> >> > > > >> >> >> > > > > > X2
> >> >> > > > >> >> >> > > > > > being a rating. May have to try it without
> >> >> > > > >> >> >> > > > > > them
> >> >> > > > >> >> >> > > > > > just to
> >> >> > > > >> >> >> > > > > > make sure the rest of it is still good.
> >> >> > > > >> >> >> > > > > >
> >> >> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> >> > > > >> >> >> > "fullsizewagon"
> >> >> > > > >> >> >> > <andrebakken@> wrote:
> >> >> > > > >> >> >> > > > > > >
> >> >> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes
> >> >> > > > >> >> >> > > > > > > a
> >> >> > > > >> >> >> > > > > > > big
> >> >> > > > >> >> >> > > > > > > difference.
> >> >> > > > >> >> >> > The X2 also signifies they're an enhanced type meant
> >> >> > > > >> >> >> > to
> >> >> > > > >> >> >> > go
> >> >> > > > >> >> >> > directly
> >> >> > > > >> >> >> > across the mains. Be sure to get X2 rated
> >> >> > > > >> >> >> > replacements.
> >> >> > > > >> >> >> > > > > > > The PSU will work without those cap's in
> >> >> > > > >> >> >> > > > > > > place, but
> >> >> > > > >> >> >> > > > > > > will
> >> >> > > > >> >> >> > radiate more interference/noise out onto the mains.
> >> >> > > > >> >> >> > > > > > >
> >> >> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> >> > > > >> >> >> > wrote:
> >> >> > > > >> >> >> > > > > > > >
> >> >> > > > >> >> >> > > > > > > > There are two in there that are the same.
> >> >> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> >> >> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square
> >> >> > > > >> >> >> > > > > > > > package.
> >> >> > > > >> >> >> > > > > > > > The bottom is clear so you can see the
> >> >> > > > >> >> >> > > > > > > > radial shape.
> >> >> > > > >> >> >> > > > > > > > I have them out already.
> >> >> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> >> >> > > > >> >> >> > > > > > > >
> >> >> > > > >> >> >> > > > > > > > DC
> >> >> > > > >> >> >> > > > > ; > >
> >> >> > > > >> >> >> > > > > > > >
> >> >> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> >> >> > > > >> >> >> > <Jeriddian@>
> >> >> > > > >> >> >> > wrote:
> >> >> > > > >> >> >> > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > Good Find, DC
> >> >> > > > >> >> >> > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > I guess they got burnt to the point
> >> >> > > > >> >> >> > > > > > > > > where
> >> >> > > > >> >> >> > > > > > > > > you can't
> >> >> > > > >> >> >> > identify the capcity amount. Could you give me the
> >> >> > > > >> >> >> > output voltage
> >> >> > > > >> >> >> > and
> >> >> > > > >> >> >> > amperage? I'll look through my units and see if I can
> >> >> > > > >> >> >> > identify
> >> >> > > > >> >> >> > them
> >> >> > > > >> >> >> > for you.
> >> >> > > > >> >> >> > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > Phil
> >> >> > > > >> >> >> > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> >> > > > >> >> >> > wrote:
> >> >> > > > >> >> >> > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like
> >> >> > > > >> >> >> > > > > > > > > > a
> >> >> > > > >> >> >> > > > > > > > > > failed cap
> >> >> > > > >> >> >> > > > > > > > > > in
> >> >> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> >> >> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> >> >> > > > >> >> >> > > > > > > > > > Any identification tips welcome,
> >> >> > > > >> >> >> > > > > > > > > > thanks.
> >> >> > > > >> >> >> > > > > > > > > > There appears to be two of the same
> >> >> > > > >> >> >> > > > > > > > > > caps, would
> >> >> > > > >> >> >> > replace both
> >> >> > > > >> >> >> > > > > > > > > > of course.
> >> >> > > > >> >> >> > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > > DC
> >> >> > > > >> >> >> > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> >> >> > > > >> >> >> > "techtalklive@" <doug@>
> >> >> > > > >> >> >> > wrote:
> >> >> > > > >> >> >> > > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > > > I am considering tackling the
> >> >> > > > >> >> >> > > > > > > > > > > repair
> >> >> > > > >> >> >> > > > > > > > > > > of a 1530
> >> >> > > > >> >> >> > > > > > > > > > > that
> >> >> > > > >> >> >> > > > > > > > > > > does not respond to the power
> >> >> > > > >> >> >> > > > > > > > > > > switch.
> >> >> > > > >> >> >> > > > > > > > > > > The power
> >> >> > > > >> >> >> > > > > > > > > > > supply
> >> >> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think
> >> >> > > > >> >> >> > > > > > > > > > > its
> >> >> > > > >> >> >> > > > > > > > > > > fine
> >> >> > > > >> >> >> > (unfortunately,
> >> >> > > > >> >> >> > > > > > > > > > > that would have been an easy
> >> >> > > > >> >> >> > > > > > > > > > > problem
> >> >> > > > >> >> >> > > > > > > > > > > isolation!)
> >> >> > > > >> >> >> > > > > > > > > > > So its something internal. I have
> >> >> > > > >> >> >> > > > > > > > > > > the
> >> >> > > > >> >> >> > > > > > > > > > > service
> >> >> > > > >> >> >> > > > > > > > > > > manuals
> >> >> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd
> >> >> > > > >> >> >> > > > > > > > > > > get
> >> >> > > > >> >> >> > > > > > > > > > > some
> >> >> > > > >> >> >> > > > > > > > > > > pointers
> >> >> > > > >> >> >> > form
> >> >> > > > >> >> >> > > > > > > > > > > folks who have already performed
> >> >> > > > >> >> >> > > > > > > > > > > cold
> >> >> > > > >> >> >> > > > > > > > > > > stone
> >> >> > > > >> >> >> > > > > > > > > > > dead
> >> >> > > > >> >> >> > diagnosis.
> >> >> > > > >> >> >> > > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this
> >> >> > > > >> >> >> > > > > > > > > > > very clean
> >> >> > > > >> >> >> > > > > > > > > > > 1530
> >> >> > > > >> >> >> > > > > > > > > > > will
> >> >> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> >> >> > > > >> >> >> > > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> >> >> > > > >> >> >> > > > > > > > > > > DC
> >> >> > > > >> >> >> > > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > > >
> >> >> > > > >> >> >> > > > > > > > >
> >> >> > > > >> >> >> > > > > > > >
> >> >> > > > >> >> >> > > > > > >
> >> >> > > > >> >> >> > > > > >
> >> >> > > > >> >> >> > > > >
> >> >> > > > >> >> >> > > >
> >> >> > > > >> >> >> > >
> >> >> > > > >> >> >> >
> >> >> > > > >> >> >>
> >> >> > > > >> >> >> Since we are on the topic of TCP does anyone have a
> >> >> > > > >> >> >> formula stashed
> >> >> > > > >> >> >> that
> >> >> > > > >> >> >> can be easily had to run say serial (probably ppp) from
> >> >> > > > >> >> >> something
> >> >> > > > >> >> >> like
> >> >> > > > >> >> >> a
> >> >> > > > >> >> >> small system like the raspberry pi serially to a system
> >> >> > > > >> >> >> with dos
> >> >> > > > >> >> >> and a
> >> >> > > > >> >> >> stack?  It's been so long since I messed with dos
> >> >> > > > >> >> >> environment
> >> >> > > > >> >> >> networking
> >> >> > > > >> >> >> I forget.
> >> >> > > > >> >> >>
> >> >> > > > >> >> >> I think windows of some sort had trumpet to handle part
> >> >> > > > >> >> >> of
> >> >> > > > >> >> >> the
> >> >> > > > >> >> >> equation,
> >> >> > > > >> >> >> but I don' t have any references right now over a dos
> >> >> > > > >> >> >> stack.
> >> >> > > > >> >> >>
> >> >> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98
> >> >> > > > >> >> >> would be
> >> >> > > > >> >> >> better,
> >> >> > > > >> >> >> but I don't know if the hardware here would be up to
> >> >> > > > >> >> >> those
> >> >> > > > >> >> >> os's.
> >> >> > > > >> >> >>
> >> >> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be
> >> >> > > > >> >> >> nice too.
> >> >> > > > >> >> >> I'm
> >> >> > > > >> >> >> asking for everything here.  Objective is to have
> >> >> > > > >> >> >> something that
> >> >> > > > >> >> >> could
> >> >> > > > >> >> >> suck off or load a disk image with a floppy boot.  I
> >> >> > > > >> >> >> suspect it was
> >> >> > > > >> >> >> a
> >> >> > > > >> >> >> difficult thing to get going in the day, though, and
> >> >> > > > >> >> >> even
> >> >> > > > >> >> >> wors now.
> >> >> > > > >> >> >>
> >> >> > > > >> >> >> jim
> >> >> > > > >> >> >> >
> >> >> > > > >> >> >> > ,___
> >> >> > > > >> >> >> >
> >> >> > > > >> >> >>
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> > ------------------------------------
> >> >> > > > >> >> >
> >> >> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo!
> >> >> > > > >> >> > Groups
> >> >> > > > >> >> > Links
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >> >
> >> >> > > > >> >>
> >> >> > > > >> >
> >> >> > > > >> >
> >> >> > > > >> >
> >> >> > > > >> >
> >> >> > > > >> > ------------------------------------
> >> >> > > > >> >
> >> >> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> >> >> > Links
> >> >> > > > >> >
> >> >> > > > >> >
> >> >> > > > >> >
> >> >> > > > >>
> >> >> > > > >
> >> >> > > > >
> >> >> > > > >
> >> >> > > > >
> >> >> > > > > ------------------------------------
> >> >> > > > >
> >> >> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> >> >> > > > > Links
> >> >> > > > >
> >> >> > > > >
> >> >> > > > >
> >> >> > > >
> >> >> > >
> >> >> >
> >> >>
> >> >>
> >> >>
> >> >>
> >> >> ------------------------------------
> >> >>
> >> >> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> > ------------------------------------
> >> >
> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
>

Yahoo! Message number: 2592
Date: Sun, 21 Oct 2012 18:40:56 -0000
From: "jeriddian"
Subject: Re: Best GRID 1530 Processor

I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> The original part was a 386DX-16. Got pics to prove it.
> Yes the 33Mhz part I put in is a DX and is working great.
>
> About the TI486DLC... a loose reading about the chip suggested to me
> it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> is bricked.
>
> I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
>
> On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> If that's so it chaps my butt...
> Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
>
> Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
>
> And how does a 16Mhz part cut it on a 25Mhz MB?
> Does the 16bit data bus, if that is what it is, decouple the
> DX's critical timing so that the lower rated parts work OK?
> Or dos the part also not actually get a 25Mhz clock?
>
> Inquiring minds want to know!
>
> I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> parts.  Perhaps there are TI and IBM parts too. It gets confusing!
>
> If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
>
> From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> Q. Which one of the Cyrix Upgrade products do I use?
>     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
>
> On the other hand, what am I fighting for?  Its still going to
> be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> try to max it out.
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > OK I'll talk to myself here...
> > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > Talk about early overclocking!  GRiD cut corners?
> > > Glad this one didn't go on the space shuttle.
> > > So I put a 33Mhz part in.
> > > I got confused on drop in parts and tried the 486DLC I had around.
> > > no go of course, its "wasn't intended for drop in compatibility"
> > > so I've now read.
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > old parts. First I found a '387. Put it in, it works.
> > > > Then, almost forgetting the 486 history, I found
> > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > internals and a 1k cache. So that got me thinking, what would
> > > > be the best in class 386 replacement...
> > > > So far I get that the answer is a TI486SXL-50.
> > > >
> > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > Needs a dos sys file to enable the cache at boot.
> > > >
> > > > Concur?
> > > >
> > > > I don't suppose there is much hope in increasing the clocks
> > > > around the MB...
> > > >
> > > > Other optimizing ideas?
> > > >
> > >
> >
>

Yahoo! Message number: 2593
Date: Sun, 21 Oct 2012 19:12:27 -0000
From: "techtalklive@..."
Subject: Re: Typical 1500 series failure modes?

I would imagine the ISA is right there in the power supply/accessory
cavity on those connectors.  Not sure I want to get into
trying to wire that.
The external bay configuration as you have with the 1535 would be
very practical!
Thanks.  Just the same maybe I'll try to look up "Shawns" work.
Is it locatable here?

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Accessing the bus might not be that hard. Shawn was able to hook up a regular ISA cable that had both the Master and Slave connectors, which he was using to try and boot the computer from a flash drive and it could see the regular hard drive, I believe. So theoretically you could use the second connnector for that purpose, but then again hooking up the AMI card is another matter. I do have a couple of 1535's which have the extended bus connector going through the bottom of the computer and hook up to an axternal bay compartment which fits under the bottom of the computer and can hook up two separate external cards like that. I've never messed with it though. They're also in storage right now, so I can't access them.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >
> > I wonder if it would be possible to rig up an 8-bit ISA slot somewhere
> > inside the 1530 so you could use one of those AMI cards.  Finding one would
> > be tough, though.
> >
> > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > "She said it was either her or the ham radio.  Over."
> >
> >
> > ----- Original Message -----
> > From: "techtalklive@" <doug@>
> > To: <RuGRiD-Laptop@yahoogroups.com>
> > Sent: Saturday, October 20, 2012 10:40 PM
> > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >
> >
> > > I'm going to take a shot at shoe-horning some low height 1MB SIMMs
> > > in their.  Let ya'll know how it goes.
> > > That Megatrends card sounds familiar; I suspect I worried about
> > > drive support way back in the day.  Actually drive support
> > > is also an issue with these 1530s.
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >>
> > >> Wow.  And, I suppose if you could find SIPPs from, say, Crucial or
> > >> Corsair,
> > >> they'd charge you a mint.  I bought a 32MB FP SIMM for the first laser
> > >> printer I owned, and Crucial wanted about a buck and a half a meg.  Yeah,
> > >> that Paradox adapter would be swell.  That may have gone the way of the
> > >> $50
> > >> card that American Megatrends used to make that would plug into any ISA
> > >> slot
> > >> and patch the BIOS so that you could use any size hard drive by any
> > >> manufacturer.  Lots of good ideas like that, but they just sort of faded
> > >> away.
> > >>
> > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> "She said it was either her or the ham radio.  Over."
> > >>
> > >>
> > >> ----- Original Message -----
> > >> From: "jeriddian" <Jeriddian@>
> > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> Sent: Thursday, October 18, 2012 9:41 PM
> > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >>
> > >>
> > >> > There was a company that at one time made an adaptation for the GRiD's
> > >> > called paradox in which they made an adapter that fit into the pin
> > >> > slots
> > >> > (I think. I've never actually seen it, but this is what I heard) and
> > >> > into
> > >> > which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for
> > >> > this,
> > >> > but never found it.  That would be cool to find and use.
> > >> >
> > >> > The problems with the memory adaptation is ther is very, very little
> > >> > room
> > >> > for the memory to fit. The MoBo was actually designed to fit the
> > >> > smallest
> > >> > RAM stick they made at the time. You have to use a low profile SIPP,
> > >> > one
> > >> > with no extra PC Board material off to the sides. You could try laying
> > >> > the
> > >> > wired SIMM's over, but I looked at trying to do that with high profile
> > >> > SIPP's and there really isn't any room to do that either. I think if
> > >> > someone coud come up with an adapter like the paradox I described that
> > >> > fit
> > >> > 2 4 MB sticks to run in the eight rows of holes, that would likely be
> > >> > the
> > >> > best answer.
> > >> >
> > >> > Phil
> > >> >
> > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >> >>
> > >> >> If you made the leads long enough to lay the SIMMs over on their side,
> > >> >> and insulated them so that they wouldn't short anything out, would you
> > >> >> have any lead dress problems, such as EMI/RFI, stray capacitance or
> > >> >> inductance, etc.?  And, if so, wonder if installing ferrite beads on
> > >> >> the
> > >> >> leads would help.
> > >> >>
> > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> "She said it was either her or the ham radio.  Over."
> > >> >>
> > >> >>
> > >> >> ----- Original Message -----
> > >> >> From: Shawnerz
> > >> >> To: rugrid-laptop@...m
> > >> >> Sent: Wednesday, October 17, 2012 12:52 PM
> > >> >> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >>
> > >> >>
> > >> >>
> > >> >>
> > >> >> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.
> > >> >> Once I soldered the pins on, the module height would not allow the
> > >> >> cover
> > >> >> to go on.
> > >> >> Your results may vary,
> > >> >> -Shawn
> > >> >>
> > >> >>
> > >> >>
> > >> >> -------- Original message --------
> > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >> From: "techtalklive@" <doug@>
> > >> >> To: RuGRiD-Laptop@yahoogroups.com
> > >> >> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >>
> > >> >>
> > >> >>
> > >> >>
> > >> >> Well that sounds promising.  The only thing that would
> > >> >> top that would be a native SCSI attached to the bus connectors
> > >> >> in the accessory port.  A ParPort one would do in the meantime.
> > >> >> Thanks!
> > >> >>
> > >> >> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> > >> >> Anyone know the mem speed?  Hate to take the thing apart right
> > >> >> now to find out.
> > >> >> Thanks!
> > >> >>
> > >> >> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >> >> >
> > >> >> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked
> > >> >> > down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the
> > >> >> > mobo
> > >> >> > clocked down to 12.5 MHz.
> > >> >> >
> > >> >> > The problem with trying to access a higher capacity drive from the
> > >> >> > parallel port is that DOS is not capable of handling a large number
> > >> >> > of
> > >> >> > addresses. Of course, SCSI then is an option in doing that. I have a
> > >> >> > portable SCSI device which hooks into the parallel port made by
> > >> >> > Adaptec, called the Mini-SCSI which will allow the computer to
> > >> >> > connect
> > >> >> > to a larger drive such as a CDROM, large HDD, ZIP drive, or similar
> > >> >> > device by a SCSI-II connection. The SCSI connector has a parallel
> > >> >> > port
> > >> >> > on it that allows you to throughput a connection to your printer. I
> > >> >> > think that the maximum HDD capacity I can use with this thing is 2T.
> > >> >> >
> > >> >> > Phil
> > >> >> >
> > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >> >> > >
> > >> >> > > I used to have all that stuff.  Today I think I can run a dos
> > >> >> > > program
> > >> >> > > on the GRiD that talks to my trusty TotalCommander on another PC.
> > >> >> > > As I might have mentioned in another post, if I could get
> > >> >> > > another PC to appear as a mounted drive to the GRiD I'd be in
> > >> >> > > real fat city.  Then I'd have the machine wide open to the rest of
> > >> >> > > the world.
> > >> >> > > Any ideas there?
> > >> >> > >
> > >> >> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@>
> > >> >> > > wrote:
> > >> >> > > >
> > >> >> > > > Good luck with the Backpack stuff.
> > >> >> > > >
> > >> >> > > > There's a book called "Hot Links", which was produced by the
> > >> >> > > > same
> > >> >> > > > people
> > >> >> > > > that produced LapLink.  In the back of the book is a disk with
> > >> >> > > > programs that
> > >> >> > > > will let you transfer files, either via null modem cable or
> > >> >> > > > LapLink
> > >> >> > > > cable.
> > >> >> > > > I doubt that the book is still in print, but it might be
> > >> >> > > > something
> > >> >> > > > to look
> > >> >> > > > for.  If you get the book without the disk, let me know, and
> > >> >> > > > I'll
> > >> >> > > > get you
> > >> >> > > > the software.  I can't remember if it lets you map the host
> > >> >> > > > drive
> > >> >> > > > to the
> > >> >> > > > client machine, but that would be cool, if it does that.
> > >> >> > > >
> > >> >> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> > > > "She said it was either her or the ham radio.  Over."
> > >> >> > > >
> > >> >> > > >
> > >> >> > > > ----- Original Message -----
> > >> >> > > > From: "techtalklive@" <doug@>
> > >> >> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > >> >> > > > Sent: Monday, October 15, 2012 10:47 PM
> > >> >> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >> > > >
> > >> >> > > >
> > >> >> > > > > Its a 1530... clock is... I dont know 20Mhz?
> > >> >> > > > > Yes checking out Backpacks now. Just collected drivers from
> > >> >> > > > > around the web for them and am checking on ebay for
> > >> >> > > > > equipment.  I suspect they will work.
> > >> >> > > > >
> > >> >> > > > > I thought I might take a look to see if there was parallel
> > >> >> > > > > port
> > >> >> > > > > software that would work like "laplink" to tether to another
> > >> >> > > > > PC
> > >> >> > > > > but would make a directory/drive on the the host PC appear as
> > >> >> > > > > a
> > >> >> > > > > drive to
> > >> >> > > > > the 1530.
> > >> >> > > > >
> > >> >> > > > > That would be cool... and avoid purchasing old hardware.
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
> > >> >> > > > > <n8euj@>
> > >> >> > > > > wrote:
> > >> >> > > > >>
> > >> >> > > > >> What's the bus clock of the 1520, for example?  If it's
> > >> >> > > > >> 10MHz,
> > >> >> > > > >> it *might*
> > >> >> > > > >> make it, but it would be breathing hard.  As for parallel
> > >> >> > > > >> drives, see if
> > >> >> > > > >> you
> > >> >> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive
> > >> >> > > > >> that
> > >> >> > > > >> works off
> > >> >> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > >> >> > > > >>
> > >> >> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> > > > >> "She said it was either her or the ham radio.  Over."
> > >> >> > > > >>
> > >> >> > > > >>
> > >> >> > > > >> ----- Original Message -----
> > >> >> > > > >> From: "techtalklive@" <doug@>
> > >> >> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> >> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > >> >> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
> > >> >> > > > >> modes?
> > >> >> > > > >>
> > >> >> > > > >>
> > >> >> > > > >> >
> > >> >> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but has
> > >> >> > > > >> > limited
> > >> >> > > > >> > driver
> > >> >> > > > >> > support.
> > >> >> > > > >> > Other similar devices don't seem to be on the used market
> > >> >> > > > >> > right not.
> > >> >> > > > >> > I'm also considering a parallel based disk drive at this
> > >> >> > > > >> > point.
> > >> >> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I
> > >> >> > > > >> > think... I
> > >> >> > > > >> > didn't
> > >> >> > > > >> > actually run the numbers.
> > >> >> > > > >> > DC
> > >> >> > > > >> >
> > >> >> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
> > >> >> > > > >> > <n8euj@> wrote:
> > >> >> > > > >> >>
> > >> >> > > > >> >> I don't think I'd even bother with the serial port.  You
> > >> >> > > > >> >> might get
> > >> >> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs,
> > >> >> > > > >> >> but
> > >> >> > > > >> >> even a
> > >> >> > > > >> >> 16550AFN
> > >> >> > > > >> >> will only give you 115,200bps.  And, if it's an
> > >> >> > > > >> >> 8250A/16450
> > >> >> > > > >> >> UART, you
> > >> >> > > > >> >> have
> > >> >> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the
> > >> >> > > > >> >> standard
> > >> >> > > > >> >> parallel
> > >> >> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad
> > >> >> > > > >> >> faster with
> > >> >> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out of
> > >> >> > > > >> >> a
> > >> >> > > > >> >> GRiD, but
> > >> >> > > > >> >> even
> > >> >> > > > >> >> if you could directly tie in to the ISA bus, it would be
> > >> >> > > > >> >> tough.
> > >> >> > > > >> >>
> > >> >> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> > > > >> >> "She said it was either her or the ham radio.  Over."
> > >> >> > > > >> >>
> > >> >> > > > >> >>
> > >> >> > > > >> >> ----- Original Message -----
> > >> >> > > > >> >> From: "Androgenoide" <androgenoide@>
> > >> >> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> >> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > >> >> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
> > >> >> > > > >> >> modes?
> > >> >> > > > >> >>
> > >> >> > > > >> >>
> > >> >> > > > >> >> > The only real obstacle to DOS networking with the Grid
> > >> >> > > > >> >> > is
> > >> >> > > > >> >> > finding an
> > >> >> > > > >> >> > Ethernet adapter that will work through either the
> > >> >> > > > >> >> > serial
> > >> >> > > > >> >> > or
> > >> >> > > > >> >> > parallel
> > >> >> > > > >> >> > ports.   I used the Xircom on the parallel port because
> > >> >> > > > >> >> > I
> > >> >> > > > >> >> > had one at
> > >> >> > > > >> >> > the
> > >> >> > > > >> >> > time.   I've got a serial device server now that would
> > >> >> > > > >> >> > probably work
> > >> >> > > > >> >> > too
> > >> >> > > > >> >> > but I've got too much going on at the moment to dig out
> > >> >> > > > >> >> > a
> > >> >> > > > >> >> > Grid just
> > >> >> > > > >> >> > to
> > >> >> > > > >> >> > see
> > >> >> > > > >> >> > what would be required.   Either of those solutions
> > >> >> > > > >> >> > would
> > >> >> > > > >> >> > be limited
> > >> >> > > > >> >> > by
> > >> >> > > > >> >> > the speed of the ports(and the Grid itself), of course.
> > >> >> > > > >> >> > Gigabit
> > >> >> > > > >> >> > speeds
> > >> >> > > > >> >> > are out of the question!
> > >> >> > > > >> >> > Another thought... The guy who put together the Techworm
> > >> >> > > > >> >> > boot disk
> > >> >> > > > >> >> > also
> > >> >> > > > >> >> > had one called Networm, a single floppy that could do a
> > >> >> > > > >> >> > dialup
> > >> >> > > > >> >> > internet
> > >> >> > > > >> >> > connection... (if you still have access to a dialup
> > >> >> > > > >> >> > service... if
> > >> >> > > > >> >> > not,
> > >> >> > > > >> >> > Budget Dial Up has a prepaid service that allows you to
> > >> >> > > > >> >> > buy
> > >> >> > > > >> >> > just a
> > >> >> > > > >> >> > few
> > >> >> > > > >> >> > hours at a time).
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > Generally speaking, if an old machine has either a
> > >> >> > > > >> >> > serial
> > >> >> > > > >> >> > or
> > >> >> > > > >> >> > parallel
> > >> >> > > > >> >> > port
> > >> >> > > > >> >> > and you can get it to boot into DOS, there is always a
> > >> >> > > > >> >> > way
> > >> >> > > > >> >> > to
> > >> >> > > > >> >> > transfer
> > >> >> > > > >> >> > files to another machine.   Even if it has no floppy you
> > >> >> > > > >> >> > can use
> > >> >> > > > >> >> > another
> > >> >> > > > >> >> > DOS machine running Laplink.  If it does have a floppy
> > >> >> > > > >> >> > there are a
> > >> >> > > > >> >> > lot
> > >> >> > > > >> >> > of
> > >> >> > > > >> >> > file transfer programs out there, from Kermit to the
> > >> >> > > > >> >> > original
> > >> >> > > > >> >> > version
> > >> >> > > > >> >> > of
> > >> >> > > > >> >> > Procomm that will fit on a single floppy.
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of
> > >> >> > > > >> >> > RAM... a
> > >> >> > > > >> >> > full
> > >> >> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95
> > >> >> > > > >> >> > would
> > >> >> > > > >> >> > be
> > >> >> > > > >> >> > tricky
> > >> >> > > > >> >> > and
> > >> >> > > > >> >> > would require some hardware tweaks even to make a slow
> > >> >> > > > >> >> > machine...
> > >> >> > > > >> >> > kind
> > >> >> > > > >> >> > of
> > >> >> > > > >> >> > an extreme project.   I've heard of a Linux distro that
> > >> >> > > > >> >> > will fit on
> > >> >> > > > >> >> > a
> > >> >> > > > >> >> > single floppy and run on systems with limited resources
> > >> >> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but
> > >> >> > > > >> >> > even that
> > >> >> > > > >> >> > one
> > >> >> > > > >> >> > seems to want 4MB of RAM.
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > There are plenty of people on the web who have too much
> > >> >> > > > >> >> > time on
> > >> >> > > > >> >> > their
> > >> >> > > > >> >> > hands and are still playing with machines even older
> > >> >> > > > >> >> > than
> > >> >> > > > >> >> > the
> > >> >> > > > >> >> > Grid...
> > >> >> > > > >> >> > You
> > >> >> > > > >> >> > can still buy new after-market accessories for
> > >> >> > > > >> >> > Commodores,
> > >> >> > > > >> >> > for
> > >> >> > > > >> >> > example,
> > >> >> > > > >> >> > so
> > >> >> > > > >> >> > don't assume that there are no new solutions to old
> > >> >> > > > >> >> > problems.
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@>
> > >> >> > > > >> >> > wrote:
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the
> > >> >> > > > >> >> >> > parallel
> > >> >> > > > >> >> >> > port
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > a NIC... although I've been wondering lately if it
> > >> >> > > > >> >> >> > might
> > >> >> > > > >> >> >> > not have
> > >> >> > > > >> >> >> > made
> > >> >> > > > >> >> >> > equally good sense to use a device server on the
> > >> >> > > > >> >> >> > serial
> > >> >> > > > >> >> >> > port...?
> > >> >> > > > >> >> >> > And,
> > >> >> > > > >> >> >> > of course, the Arachne browser... not many choices
> > >> >> > > > >> >> >> > for a
> > >> >> > > > >> >> >> > DOS
> > >> >> > > > >> >> >> > browser
> > >> >> > > > >> >> >> > are there? I used it to check my Yahoo web mail and
> > >> >> > > > >> >> >> > I'll
> > >> >> > > > >> >> >> > have to
> > >> >> > > > >> >> >> > say
> > >> >> > > > >> >> >> > that it gave a whole new dimension of meaning to the
> > >> >> > > > >> >> >> > word "slow."
> > >> >> > > > >> >> >> > Go
> > >> >> > > > >> >> >> > ahead, make a pot of tea while it's loading that
> > >> >> > > > >> >> >> > page,
> > >> >> > > > >> >> >> > it will be
> > >> >> > > > >> >> >> > a
> > >> >> > > > >> >> >> > while.
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran
> > >> >> > > > >> >> >> > into a
> > >> >> > > > >> >> >> > web page
> > >> >> > > > >> >> >> > last
> > >> >> > > > >> >> >> > week of a guy who was competing with a friend to see
> > >> >> > > > >> >> >> > who
> > >> >> > > > >> >> >> > could
> > >> >> > > > >> >> >> > force
> > >> >> > > > >> >> >> > Windows XP to run with the least resources. It won't
> > >> >> > > > >> >> >> > install
> > >> >> > > > >> >> >> > unless
> > >> >> > > > >> >> >> > it
> > >> >> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor
> > >> >> > > > >> >> >> > but,
> > >> >> > > > >> >> >> > once
> > >> >> > > > >> >> >> > installed
> > >> >> > > > >> >> >> > you can remove RAM and underclock the machine... He
> > >> >> > > > >> >> >> > said
> > >> >> > > > >> >> >> > he got
> > >> >> > > > >> >> >> > one
> > >> >> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock
> > >> >> > > > >> >> >> > and
> > >> >> > > > >> >> >> > it took a
> > >> >> > > > >> >> >> > half
> > >> >> > > > >> >> >> > hour to boot.
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I
> > >> >> > > > >> >> >> > have nothing
> > >> >> > > > >> >> >> > else
> > >> >> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can
> > >> >> > > > >> >> >> > get
> > >> >> > > > >> >> >> > online
> > >> >> > > > >> >> >> > with
> > >> >> > > > >> >> >> > a
> > >> >> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that
> > >> >> > > > >> >> >> > Contiki
> > >> >> > > > >> >> >> > OS/browser
> > >> >> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@"
> > >> >> > > > >> >> >> > <doug@> wrote:
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > Like the hack job? :O
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone
> > >> >> > > > >> >> >> > > swapped
> > >> >> > > > >> >> >> > > screes?
> > >> >> > > > >> >> >> > > Should I take the kbd apart and clean it (will that
> > >> >> > > > >> >> >> > > likely
> > >> >> > > > >> >> >> > > fix it?) or look for a replacement?
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > So what can I do with this thing if I put more mem
> > >> >> > > > >> >> >> > > in
> > >> >> > > > >> >> >> > > it?
> > >> >> > > > >> >> >> > > Its all accessed funky through expaned mem methods,
> > >> >> > > > >> >> >> > > isn't it?
> > >> >> > > > >> >> >> > > I have a coprocessor I could put in this but not
> > >> >> > > > >> >> >> > > sure
> > >> >> > > > >> >> >> > > of
> > >> >> > > > >> >> >> > > the point there.
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > I think I might like to accomplish getting it on
> > >> >> > > > >> >> >> > > the
> > >> >> > > > >> >> >> > > web.
> > >> >> > > > >> >> >> > > I'd need the LAN hardware I guess.
> > >> >> > > > >> >> >> > > Any other ideas?
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two
> > >> >> > > > >> >> >> > > contact on
> > >> >> > > > >> >> >> > > it that mate inside the cavity. But one of the two
> > >> >> > > > >> >> >> > > spring
> > >> >> > > > >> >> >> > > contacts
> > >> >> > > > >> >> >> > > inside is "rubberized", so only the one contact
> > >> >> > > > >> >> >> > > hits
> > >> >> > > > >> >> >> > > metal to
> > >> >> > > > >> >> >> > > metal.
> > >> >> > > > >> >> >> > > So the P.S. only works using the cord to go from
> > >> >> > > > >> >> >> > > the
> > >> >> > > > >> >> >> > > P.S. into
> > >> >> > > > >> >> >> > > the
> > >> >> > > > >> >> >> > > radial DC jack. Strange?
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > DC
> > >> >> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > >> >> > > > >> >> >> > <Jeriddian@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Great job, Doug!
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of
> > >> >> > > > >> >> >> > > > these
> > >> >> > > > >> >> >> > > > beautiful
> > >> >> > > > >> >> >> > machines? And yep, that's the way it works.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Once you restore battery power to the 1287A, the
> > >> >> > > > >> >> >> > > > CMOS
> > >> >> > > > >> >> >> > > > registers
> > >> >> > > > >> >> >> > are again active. It's just that they're filled with
> > >> >> > > > >> >> >> > nonsense, so
> > >> >> > > > >> >> >> > the
> > >> >> > > > >> >> >> > computer tells you the clock had stopped (which it
> > >> >> > > > >> >> >> > did),
> > >> >> > > > >> >> >> > and
> > >> >> > > > >> >> >> > simply
> > >> >> > > > >> >> >> > prompts you to reset the time. Once you do that and
> > >> >> > > > >> >> >> > reboot,
> > >> >> > > > >> >> >> > everything's hunky-dory.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > You can probably find some more 256K sticks
> > >> >> > > > >> >> >> > > > somewhere and
> > >> >> > > > >> >> >> > > > upgrade
> > >> >> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to
> > >> >> > > > >> >> >> > Ver.
> > >> >> > > > >> >> >> > 6.22.
> > >> >> > > > >> >> >> > Great
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > hear the HDD is good too.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on
> > >> >> > > > >> >> >> > > > sale on ebay
> > >> >> > > > >> >> >> > > > that
> > >> >> > > > >> >> >> > I looked at, however it was strange. It was
> > >> >> > > > >> >> >> > definitely
> > >> >> > > > >> >> >> > branded a
> > >> >> > > > >> >> >> > 1520,
> > >> >> > > > >> >> >> > and advertised that way, but the flip up screen said
> > >> >> > > > >> >> >> > it
> > >> >> > > > >> >> >> > was a 386
> > >> >> > > > >> >> >> > machine. I decided to get it, and it was only about
> > >> >> > > > >> >> >> > $90
> > >> >> > > > >> >> >> > with
> > >> >> > > > >> >> >> > shipping.
> > >> >> > > > >> >> >> > When I got the machine, I was very excited when it
> > >> >> > > > >> >> >> > began
> > >> >> > > > >> >> >> > to post,
> > >> >> > > > >> >> >> > because I got a full 8MB of RAM! It of course
> > >> >> > > > >> >> >> > displayed
> > >> >> > > > >> >> >> > the
> > >> >> > > > >> >> >> > configuration error 02 indicating the CMOS battery
> > >> >> > > > >> >> >> > was
> > >> >> > > > >> >> >> > dead. So I
> > >> >> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A
> > >> >> > > > >> >> >> > model, but
> > >> >> > > > >> >> >> > that
> > >> >> > > > >> >> >> > was
> > >> >> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I
> > >> >> > > > >> >> >> > had a
> > >> >> > > > >> >> >> > spare.
> > >> >> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard
> > >> >> > > > >> >> >> > off
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > discover
> > >> >> > > > >> >> >> > that not only was this really a 386 machine (a 1530),
> > >> >> > > > >> >> >> > but it also
> > >> >> > > > >> >> >> > had
> > >> >> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced 
> > >> >> > > > >> >> >> > the
> > >> >> > > > >> >> >> > 1287A and
> > >> >> > > > >> >> >> > this
> > >> >> > > > >> >> >> > solved the configuration error just fine. But alas, I
> > >> >> > > > >> >> >> > didn't get
> > >> >> > > > >> >> >> > a
> > >> >> > > > >> >> >> > triple crown winner here. The Conner drive was
> > >> >> > > > >> >> >> > definitely dead.
> > >> >> > > > >> >> >> > But
> > >> >> > > > >> >> >> > heck, getting another HDD is easy compared to the
> > >> >> > > > >> >> >> > other
> > >> >> > > > >> >> >> > benefits!
> > >> >> > > > >> >> >> > The
> > >> >> > > > >> >> >> > original owner of this machine definitely took care
> > >> >> > > > >> >> >> > of
> > >> >> > > > >> >> >> > it.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Phil
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > >> >> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and
> > >> >> > > > >> >> >> > > > > ran
> > >> >> > > > >> >> >> > > > > the wires
> > >> >> > > > >> >> >> > > > > to
> > >> >> > > > >> >> >> > > > > a
> > >> >> > > > >> >> >> > convenient place for the battery. Upon power up it
> > >> >> > > > >> >> >> > said
> > >> >> > > > >> >> >> > > > > that the RTC was stopped, and it needed
> > >> >> > > > >> >> >> > > > > setting.
> > >> >> > > > >> >> >> > > > > The "stopped" message threw me, I thought
> > >> >> > > > >> >> >> > > > > something was
> > >> >> > > > >> >> >> > > > > wrong
> > >> >> > > > >> >> >> > > > > with
> > >> >> > > > >> >> >> > > > > the chip. It took an F1 to continue and went
> > >> >> > > > >> >> >> > > > > right
> > >> >> > > > >> >> >> > > > > through
> > >> >> > > > >> >> >> > > > > POST
> > >> >> > > > >> >> >> > and Autoexec.
> > >> >> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory
> > >> >> > > > >> >> >> > > > > set
> > >> >> > > > >> >> >> > > > > the RTC.
> > >> >> > > > >> >> >> > > > > Now it boots cleanly.
> > >> >> > > > >> >> >> > > > > Has Lotus123 on the HD.
> > >> >> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"...
> > >> >> > > > >> >> >> > > > > page 2!
> > >> >> > > > >> >> >> > > > > The only remaining issue is that a few keys on
> > >> >> > > > >> >> >> > > > > the
> > >> >> > > > >> >> >> > > > > keyboard
> > >> >> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external
> > >> >> > > > >> >> >> > > > > kbd
> > >> >> > > > >> >> >> > > > > everything
> > >> >> > > > >> >> >> > > > > works.
> > >> >> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01
> > >> >> > > > >> >> >> > > > > 386
> > >> >> > > > >> >> >> > > > > with 1MB
> > >> >> > > > >> >> >> > > > > RAM,
> > >> >> > > > >> >> >> > > > > a
> > >> >> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some
> > >> >> > > > >> >> >> > smokin'
> > >> >> > > > >> >> >> > system!
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > >
> > >> >> > > > >> >> >> > > > > > Thanks so much that was great info. I had no
> > >> >> > > > >> >> >> > > > > > idea on the
> > >> >> > > > >> >> >> > > > > > X2
> > >> >> > > > >> >> >> > > > > > being a rating. May have to try it without
> > >> >> > > > >> >> >> > > > > > them
> > >> >> > > > >> >> >> > > > > > just to
> > >> >> > > > >> >> >> > > > > > make sure the rest of it is still good.
> > >> >> > > > >> >> >> > > > > >
> > >> >> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "fullsizewagon"
> > >> >> > > > >> >> >> > <andrebakken@> wrote:
> > >> >> > > > >> >> >> > > > > > >
> > >> >> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes
> > >> >> > > > >> >> >> > > > > > > a
> > >> >> > > > >> >> >> > > > > > > big
> > >> >> > > > >> >> >> > > > > > > difference.
> > >> >> > > > >> >> >> > The X2 also signifies they're an enhanced type meant
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > go
> > >> >> > > > >> >> >> > directly
> > >> >> > > > >> >> >> > across the mains. Be sure to get X2 rated
> > >> >> > > > >> >> >> > replacements.
> > >> >> > > > >> >> >> > > > > > > The PSU will work without those cap's in
> > >> >> > > > >> >> >> > > > > > > place, but
> > >> >> > > > >> >> >> > > > > > > will
> > >> >> > > > >> >> >> > radiate more interference/noise out onto the mains.
> > >> >> > > > >> >> >> > > > > > >
> > >> >> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > There are two in there that are the same.
> > >> >> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > >> >> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square
> > >> >> > > > >> >> >> > > > > > > > package.
> > >> >> > > > >> >> >> > > > > > > > The bottom is clear so you can see the
> > >> >> > > > >> >> >> > > > > > > > radial shape.
> > >> >> > > > >> >> >> > > > > > > > I have them out already.
> > >> >> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > DC
> > >> >> > > > >> >> >> > > > > ; > >
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > >> >> > > > >> >> >> > <Jeriddian@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > Good Find, DC
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > I guess they got burnt to the point
> > >> >> > > > >> >> >> > > > > > > > > where
> > >> >> > > > >> >> >> > > > > > > > > you can't
> > >> >> > > > >> >> >> > identify the capcity amount. Could you give me the
> > >> >> > > > >> >> >> > output voltage
> > >> >> > > > >> >> >> > and
> > >> >> > > > >> >> >> > amperage? I'll look through my units and see if I can
> > >> >> > > > >> >> >> > identify
> > >> >> > > > >> >> >> > them
> > >> >> > > > >> >> >> > for you.
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > Phil
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like
> > >> >> > > > >> >> >> > > > > > > > > > a
> > >> >> > > > >> >> >> > > > > > > > > > failed cap
> > >> >> > > > >> >> >> > > > > > > > > > in
> > >> >> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > >> >> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > >> >> > > > >> >> >> > > > > > > > > > Any identification tips welcome,
> > >> >> > > > >> >> >> > > > > > > > > > thanks.
> > >> >> > > > >> >> >> > > > > > > > > > There appears to be two of the same
> > >> >> > > > >> >> >> > > > > > > > > > caps, would
> > >> >> > > > >> >> >> > replace both
> > >> >> > > > >> >> >> > > > > > > > > > of course.
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > DC
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > > I am considering tackling the
> > >> >> > > > >> >> >> > > > > > > > > > > repair
> > >> >> > > > >> >> >> > > > > > > > > > > of a 1530
> > >> >> > > > >> >> >> > > > > > > > > > > that
> > >> >> > > > >> >> >> > > > > > > > > > > does not respond to the power
> > >> >> > > > >> >> >> > > > > > > > > > > switch.
> > >> >> > > > >> >> >> > > > > > > > > > > The power
> > >> >> > > > >> >> >> > > > > > > > > > > supply
> > >> >> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think
> > >> >> > > > >> >> >> > > > > > > > > > > its
> > >> >> > > > >> >> >> > > > > > > > > > > fine
> > >> >> > > > >> >> >> > (unfortunately,
> > >> >> > > > >> >> >> > > > > > > > > > > that would have been an easy
> > >> >> > > > >> >> >> > > > > > > > > > > problem
> > >> >> > > > >> >> >> > > > > > > > > > > isolation!)
> > >> >> > > > >> >> >> > > > > > > > > > > So its something internal. I have
> > >> >> > > > >> >> >> > > > > > > > > > > the
> > >> >> > > > >> >> >> > > > > > > > > > > service
> > >> >> > > > >> >> >> > > > > > > > > > > manuals
> > >> >> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd
> > >> >> > > > >> >> >> > > > > > > > > > > get
> > >> >> > > > >> >> >> > > > > > > > > > > some
> > >> >> > > > >> >> >> > > > > > > > > > > pointers
> > >> >> > > > >> >> >> > form
> > >> >> > > > >> >> >> > > > > > > > > > > folks who have already performed 
> > >> >> > > > >> >> >> > > > > > > > > > > cold
> > >> >> > > > >> >> >> > > > > > > > > > > stone
> > >> >> > > > >> >> >> > > > > > > > > > > dead
> > >> >> > > > >> >> >> > diagnosis.
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this
> > >> >> > > > >> >> >> > > > > > > > > > > very clean
> > >> >> > > > >> >> >> > > > > > > > > > > 1530
> > >> >> > > > >> >> >> > > > > > > > > > > will
> > >> >> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > >> >> > > > >> >> >> > > > > > > > > > > DC
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > >
> > >> >> > > > >> >> >> > > > > >
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> Since we are on the topic of TCP does anyone have a
> > >> >> > > > >> >> >> formula stashed
> > >> >> > > > >> >> >> that
> > >> >> > > > >> >> >> can be easily had to run say serial (probably ppp) from
> > >> >> > > > >> >> >> something
> > >> >> > > > >> >> >> like
> > >> >> > > > >> >> >> a
> > >> >> > > > >> >> >> small system like the raspberry pi serially to a system
> > >> >> > > > >> >> >> with dos
> > >> >> > > > >> >> >> and a
> > >> >> > > > >> >> >> stack?  It's been so long since I messed with dos
> > >> >> > > > >> >> >> environment
> > >> >> > > > >> >> >> networking
> > >> >> > > > >> >> >> I forget.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> I think windows of some sort had trumpet to handle part
> > >> >> > > > >> >> >> of
> > >> >> > > > >> >> >> the
> > >> >> > > > >> >> >> equation,
> > >> >> > > > >> >> >> but I don' t have any references right now over a dos
> > >> >> > > > >> >> >> stack.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98
> > >> >> > > > >> >> >> would be
> > >> >> > > > >> >> >> better,
> > >> >> > > > >> >> >> but I don't know if the hardware here would be up to
> > >> >> > > > >> >> >> those
> > >> >> > > > >> >> >> os's.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be
> > >> >> > > > >> >> >> nice too.
> > >> >> > > > >> >> >> I'm
> > >> >> > > > >> >> >> asking for everything here.  Objective is to have
> > >> >> > > > >> >> >> something that
> > >> >> > > > >> >> >> could
> > >> >> > > > >> >> >> suck off or load a disk image with a floppy boot.  I
> > >> >> > > > >> >> >> suspect it was
> > >> >> > > > >> >> >> a
> > >> >> > > > >> >> >> difficult thing to get going in the day, though, and
> > >> >> > > > >> >> >> even
> > >> >> > > > >> >> >> wors now.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> jim
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > ,___
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > ------------------------------------
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo!
> > >> >> > > > >> >> > Groups
> > >> >> > > > >> >> > Links
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >>
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> > ------------------------------------
> > >> >> > > > >> >
> > >> >> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> > >> >> > Links
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >>
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > > ------------------------------------
> > >> >> > > > >
> > >> >> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> > >> >> > > > > Links
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > >
> > >> >> > >
> > >> >> >
> > >> >>
> > >> >>
> > >> >>
> > >> >>
> > >> >> ------------------------------------
> > >> >>
> > >> >> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >> >>
> > >> >
> > >> >
> > >> >
> > >> >
> > >> > ------------------------------------
> > >> >
> > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >> >
> > >> >
> > >> >
> > >>
> > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >
> > >
> > >
> >
>

Yahoo! Message number: 2594
Date: Sun, 21 Oct 2012 19:13:35 -0000
From: "techtalklive@..."
Subject: Re: Best GRID 1530 Processor

I suspect you are right. I hope you at least enjoyed my rant!
I'll probably try a Cyrix if I'm still at this when one comes by.

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > The original part was a 386DX-16. Got pics to prove it.
> > Yes the 33Mhz part I put in is a DX and is working great.
> >
> > About the TI486DLC... a loose reading about the chip suggested to me
> > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > is bricked.
> >
> > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> >
> > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > If that's so it chaps my butt...
> > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> >
> > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> >
> > And how does a 16Mhz part cut it on a 25Mhz MB?
> > Does the 16bit data bus, if that is what it is, decouple the
> > DX's critical timing so that the lower rated parts work OK?
> > Or dos the part also not actually get a 25Mhz clock?
> >
> > Inquiring minds want to know!
> >
> > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> >
> > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> >
> > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > Q. Which one of the Cyrix Upgrade products do I use?
> >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> >
> > On the other hand, what am I fighting for?  Its still going to
> > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > try to max it out.
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > OK I'll talk to myself here...
> > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > Talk about early overclocking!  GRiD cut corners?
> > > > Glad this one didn't go on the space shuttle.
> > > > So I put a 33Mhz part in.
> > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > so I've now read.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > old parts. First I found a '387. Put it in, it works.
> > > > > Then, almost forgetting the 486 history, I found
> > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > be the best in class 386 replacement...
> > > > > So far I get that the answer is a TI486SXL-50.
> > > > >
> > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > Needs a dos sys file to enable the cache at boot.
> > > > >
> > > > > Concur?
> > > > >
> > > > > I don't suppose there is much hope in increasing the clocks
> > > > > around the MB...
> > > > >
> > > > > Other optimizing ideas?
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2595
Date: Sun, 21 Oct 2012 19:29:05 -0000
From: "techtalklive@..."
Subject: 1530 VGA blue LCD

I posted a careful photo of my screen in Doug's 1530 stuff.
The screen is painful to use and I've tried all the contrast controls
of CONFIG and DISPLAY.
Is this typical for such a display or is the LCD/Backlight going.
I remember these monochrome LCDs being A LOT prettier... but
perhaps its the VGA grey scaling that makes it all muddy.

Yahoo! Message number: 2596
Date: Sun, 21 Oct 2012 12:37:08 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
text/plain; charset=iso-8859-1

It might be.� I can't remember if I took any pictures of it.� There is a big "gotcha" when trying to connect to the IDE connector.�
I'm doing this from memory, so I may not remember everything 100% correctly.
�
I used 40, long, DIP pins to turn the female connector to a male.� Then I used a standard IDE cable to connect the drive to the IDE "card."� The problem is the pins are are now "mirrored."� Or, the top row is now the bottom row, and vice-versa.
What's bugging me is I can't remember how I fixed that.� I think I might have used another 40 pins and another short IDE cable to get the pins in the correct position.
�
Like Phil said, my stuff is in storage too. :(
-Shawn
�


________________________________
 From: "techtalklive@..." <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Sunday, October 21, 2012 3:12 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

I would imagine the ISA is right there in the power supply/accessory
cavity on those connectors.� Not sure I want to get into
trying to wire that.�
The external bay configuration as you have with the 1535 would be
very practical!
Thanks.� Just the same maybe I'll try to look up "Shawns" work.
Is it locatable here?

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Accessing the bus might not be that hard. Shawn was able to hook up a regular ISA cable that had both the Master and Slave connectors, which he was using to try and boot the computer from a flash drive and it could see the regular hard drive, I believe. So theoretically you could use the second connnector for that purpose, but then again hooking up the AMI card is another matter. I do have a couple of 1535's which have the extended bus connector going through the bottom of the computer and hook up to an axternal bay compartment which fits under the bottom of the computer and can hook up two separate external cards like that. I've never messed with it though. They're also in storage right now, so I can't access them.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> >
> > I wonder if it would be possible to rig up an 8-bit ISA slot somewhere
> > inside the 1530 so you could use one of those AMI cards.� Finding one would
> > be tough, though.
> >
> > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > "She said it was either her or the ham radio.� Over."
> >
> >
> > ----- Original Message -----
> > From: "techtalklive@" <doug@>
> > To: <RuGRiD-Laptop@yahoogroups.com>
> > Sent: Saturday, October 20, 2012 10:40 PM
> > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> >
> >
> > > I'm going to take a shot at shoe-horning some low height 1MB SIMMs
> > > in their.� Let ya'll know how it goes.
> > > That Megatrends card sounds familiar; I suspect I worried about
> > > drive support way back in the day.� Actually drive support
> > > is also an issue with these 1530s.
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >>
> > >> Wow.� And, I suppose if you could find SIPPs from, say, Crucial or
> > >> Corsair,
> > >> they'd charge you a mint.� I bought a 32MB FP SIMM for the first laser
> > >> printer I owned, and Crucial wanted about a buck and a half a meg.� Yeah,
> > >> that Paradox adapter would be swell.� That may have gone the way of the
> > >> $50
> > >> card that American Megatrends used to make that would plug into any ISA
> > >> slot
> > >> and patch the BIOS so that you could use any size hard drive by any
> > >> manufacturer.� Lots of good ideas like that, but they just sort of faded
> > >> away.
> > >>
> > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> "She said it was either her or the ham radio.� Over."
> > >>
> > >>
> > >> ----- Original Message -----
> > >> From: "jeriddian" <Jeriddian@>
> > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> Sent: Thursday, October 18, 2012 9:41 PM
> > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >>
> > >>
> > >> > There was a company that at one time made an adaptation for the GRiD's
> > >> > called paradox in which they made an adapter that fit into the pin
> > >> > slots
> > >> > (I think. I've never actually seen it, but this is what I heard) and
> > >> > into
> > >> > which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for
> > >> > this,
> > >> > but never found it.� That would be cool to find and use.
> > >> >
> > >> > The problems with the memory adaptation is ther is very, very little
> > >> > room
> > >> > for the memory to fit. The MoBo was actually designed to fit the
> > >> > smallest
> > >> > RAM stick they made at the time. You have to use a low profile SIPP,
> > >> > one
> > >> > with no extra PC Board material off to the sides. You could try laying
> > >> > the
> > >> > wired SIMM's over, but I looked at trying to do that with high profile
> > >> > SIPP's and there really isn't any room to do that either. I think if
> > >> > someone coud come up with an adapter like the paradox I described that
> > >> > fit
> > >> > 2 4 MB sticks to run in the eight rows of holes, that would likely be
> > >> > the
> > >> > best answer.
> > >> >
> > >> > Phil
> > >> >
> > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
> > >> >>
> > >> >> If you made the leads long enough to lay the SIMMs over on their side,
> > >> >> and insulated them so that they wouldn't short anything out, would you
> > >> >> have any lead dress problems, such as EMI/RFI, stray capacitance or
> > >> >> inductance, etc.?� And, if so, wonder if installing ferrite beads on
> > >> >> the
> > >> >> leads would help.
> > >> >>
> > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> "She said it was either her or the ham radio.� Over."
> > >> >>
> > >> >>
> > >> >> ----- Original Message -----
> > >> >> From: Shawnerz
> > >> >> To: rugrid-laptop@yahoogroups.com
> > >> >> Sent: Wednesday, October 17, 2012 12:52 PM
> > >> >> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >>
> > >> >>
> > >> >>
> > >> >>
> > >> >> IIRC, it's 70 mS. The problem I ran in to is the height of the SIMM.
> > >> >> Once I soldered the pins on, the module height would not allow the
> > >> >> cover
> > >> >> to go on.
> > >> >> Your results may vary,
> > >> >> -Shawn
> > >> >>
> > >> >>
> > >> >>
> > >> >> -------- Original message --------
> > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >> From: "techtalklive@" <doug@>
> > >> >> To: RuGRiD-Laptop@yahoogroups.com
> > >> >> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >>
> > >> >>
> > >> >>
> > >> >>
> > >> >> Well that sounds promising.� The only thing that would
> > >> >> top that would be a native SCSI attached to the bus connectors
> > >> >> in the accessory port.� A ParPort one would do in the meantime.
> > >> >> Thanks!
> > >> >>
> > >> >> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
> > >> >> Anyone know the mem speed?� Hate to take the thing apart right
> > >> >> now to find out.
> > >> >> Thanks!
> > >> >>
> > >> >> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >> >> >
> > >> >> > The clock frequency of the 1520 CPU is 20 MHz, with the bus clocked
> > >> >> > down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, the
> > >> >> > mobo
> > >> >> > clocked down to 12.5 MHz.
> > >> >> >
> > >> >> > The problem with trying to access a higher capacity drive from the
> > >> >> > parallel port is that DOS is not capable of handling a large number
> > >> >> > of
> > >> >> > addresses. Of course, SCSI then is an option in doing that. I have a
> > >> >> > portable SCSI device which hooks into the parallel port made by
> > >> >> > Adaptec, called the Mini-SCSI which will allow the computer to
> > >> >> > connect
> > >> >> > to a larger drive such as a CDROM, large HDD, ZIP drive, or similar
> > >> >> > device by a SCSI-II connection. The SCSI connector has a parallel
> > >> >> > port
> > >> >> > on it that allows you to throughput a connection to your printer. I
> > >> >> > think that the maximum HDD capacity I can use with this thing is 2T.
> > >> >> >
> > >> >> > Phil
> > >> >> >
> > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >> >> > >
> > >> >> > > I used to have all that stuff.� Today I think I can run a dos
> > >> >> > > program
> > >> >> > > on the GRiD that talks to my trusty TotalCommander on another PC.
> > >> >> > > As I might have mentioned in another post, if I could get
> > >> >> > > another PC to appear as a mounted drive to the GRiD I'd be in
> > >> >> > > real fat city.� Then I'd have the machine wide open to the rest of
> > >> >> > > the world.
> > >> >> > > Any ideas there?
> > >> >> > >
> > >> >> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@>
> > >> >> > > wrote:
> > >> >> > > >
> > >> >> > > > Good luck with the Backpack stuff.
> > >> >> > > >
> > >> >> > > > There's a book called "Hot Links", which was produced by the
> > >> >> > > > same
> > >> >> > > > people
> > >> >> > > > that produced LapLink.� In the back of the book is a disk with
> > >> >> > > > programs that
> > >> >> > > > will let you transfer files, either via null modem cable or
> > >> >> > > > LapLink
> > >> >> > > > cable.
> > >> >> > > > I doubt that the book is still in print, but it might be
> > >> >> > > > something
> > >> >> > > > to look
> > >> >> > > > for.� If you get the book without the disk, let me know, and
> > >> >> > > > I'll
> > >> >> > > > get you
> > >> >> > > > the software.� I can't remember if it lets you map the host
> > >> >> > > > drive
> > >> >> > > > to the
> > >> >> > > > client machine, but that would be cool, if it does that.
> > >> >> > > >
> > >> >> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> > > > "She said it was either her or the ham radio.� Over."
> > >> >> > > >
> > >> >> > > >
> > >> >> > > > ----- Original Message -----
> > >> >> > > > From: "techtalklive@" <doug@>
> > >> >> > > > To: <RuGRiD-Laptop@yahoogroups.com>
> > >> >> > > > Sent: Monday, October 15, 2012 10:47 PM
> > >> >> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
> > >> >> > > >
> > >> >> > > >
> > >> >> > > > > Its a 1530... clock is... I dont know 20Mhz?
> > >> >> > > > > Yes checking out Backpacks now. Just collected drivers from
> > >> >> > > > > around the web for them and am checking on ebay for
> > >> >> > > > > equipment.� I suspect they will work.
> > >> >> > > > >
> > >> >> > > > > I thought I might take a look to see if there was parallel
> > >> >> > > > > port
> > >> >> > > > > software that would work like "laplink" to tether to another
> > >> >> > > > > PC
> > >> >> > > > > but would make a directory/drive on the the host PC appear as
> > >> >> > > > > a
> > >> >> > > > > drive to
> > >> >> > > > > the 1530.
> > >> >> > > > >
> > >> >> > > > > That would be cool... and avoid purchasing old hardware.
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
> > >> >> > > > > <n8euj@>
> > >> >> > > > > wrote:
> > >> >> > > > >>
> > >> >> > > > >> What's the bus clock of the 1520, for example?� If it's
> > >> >> > > > >> 10MHz,
> > >> >> > > > >> it *might*
> > >> >> > > > >> make it, but it would be breathing hard.� As for parallel
> > >> >> > > > >> drives, see if
> > >> >> > > > >> you
> > >> >> > > > >> can find any of the Backpack stuff.� I have a CD-ROM drive
> > >> >> > > > >> that
> > >> >> > > > >> works off
> > >> >> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
> > >> >> > > > >>
> > >> >> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> > > > >> "She said it was either her or the ham radio.� Over."
> > >> >> > > > >>
> > >> >> > > > >>
> > >> >> > > > >> ----- Original Message -----
> > >> >> > > > >> From: "techtalklive@" <doug@>
> > >> >> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> >> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
> > >> >> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
> > >> >> > > > >> modes?
> > >> >> > > > >>
> > >> >> > > > >>
> > >> >> > > > >> >
> > >> >> > > > >> > Agreed!� The Xircom Parallel port 10bT is available but has
> > >> >> > > > >> > limited
> > >> >> > > > >> > driver
> > >> >> > > > >> > support.
> > >> >> > > > >> > Other similar devices don't seem to be on the used market
> > >> >> > > > >> > right not.
> > >> >> > > > >> > I'm also considering a parallel based disk drive at this
> > >> >> > > > >> > point.
> > >> >> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I
> > >> >> > > > >> > think... I
> > >> >> > > > >> > didn't
> > >> >> > > > >> > actually run the numbers.
> > >> >> > > > >> > DC
> > >> >> > > > >> >
> > >> >> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
> > >> >> > > > >> > <n8euj@> wrote:
> > >> >> > > > >> >>
> > >> >> > > > >> >> I don't think I'd even bother with the serial port.� You
> > >> >> > > > >> >> might get
> > >> >> > > > >> >> 230,400bps out of it if it has one of the fancier UARTs,
> > >> >> > > > >> >> but
> > >> >> > > > >> >> even a
> > >> >> > > > >> >> 16550AFN
> > >> >> > > > >> >> will only give you 115,200bps.� And, if it's an
> > >> >> > > > >> >> 8250A/16450
> > >> >> > > > >> >> UART, you
> > >> >> > > > >> >> have
> > >> >> > > > >> >> to slow it down with CTS/RTS handshaking.� I think the
> > >> >> > > > >> >> standard
> > >> >> > > > >> >> parallel
> > >> >> > > > >> >> port will give you around 5Mbps, won't it?� Maybe a tad
> > >> >> > > > >> >> faster with
> > >> >> > > > >> >> IEEE-1284 or ECP+EPP.� I'd love to get 10/100 rates out of
> > >> >> > > > >> >> a
> > >> >> > > > >> >> GRiD, but
> > >> >> > > > >> >> even
> > >> >> > > > >> >> if you could directly tie in to the ISA bus, it would be
> > >> >> > > > >> >> tough.
> > >> >> > > > >> >>
> > >> >> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
> > >> >> > > > >> >> "She said it was either her or the ham radio.� Over."
> > >> >> > > > >> >>
> > >> >> > > > >> >>
> > >> >> > > > >> >> ----- Original Message -----
> > >> >> > > > >> >> From: "Androgenoide" <androgenoide@>
> > >> >> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
> > >> >> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
> > >> >> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
> > >> >> > > > >> >> modes?
> > >> >> > > > >> >>
> > >> >> > > > >> >>
> > >> >> > > > >> >> > The only real obstacle to DOS networking with the Grid
> > >> >> > > > >> >> > is
> > >> >> > > > >> >> > finding an
> > >> >> > > > >> >> > Ethernet adapter that will work through either the
> > >> >> > > > >> >> > serial
> > >> >> > > > >> >> > or
> > >> >> > > > >> >> > parallel
> > >> >> > > > >> >> > ports.�  I used the Xircom on the parallel port because
> > >> >> > > > >> >> > I
> > >> >> > > > >> >> > had one at
> > >> >> > > > >> >> > the
> > >> >> > > > >> >> > time.�  I've got a serial device server now that would
> > >> >> > > > >> >> > probably work
> > >> >> > > > >> >> > too
> > >> >> > > > >> >> > but I've got too much going on at the moment to dig out
> > >> >> > > > >> >> > a
> > >> >> > > > >> >> > Grid just
> > >> >> > > > >> >> > to
> > >> >> > > > >> >> > see
> > >> >> > > > >> >> > what would be required.�  Either of those solutions
> > >> >> > > > >> >> > would
> > >> >> > > > >> >> > be limited
> > >> >> > > > >> >> > by
> > >> >> > > > >> >> > the speed of the ports(and the Grid itself), of course.
> > >> >> > > > >> >> > Gigabit
> > >> >> > > > >> >> > speeds
> > >> >> > > > >> >> > are out of the question!
> > >> >> > > > >> >> > Another thought... The guy who put together the Techworm
> > >> >> > > > >> >> > boot disk
> > >> >> > > > >> >> > also
> > >> >> > > > >> >> > had one called Networm, a single floppy that could do a
> > >> >> > > > >> >> > dialup
> > >> >> > > > >> >> > internet
> > >> >> > > > >> >> > connection... (if you still have access to a dialup
> > >> >> > > > >> >> > service... if
> > >> >> > > > >> >> > not,
> > >> >> > > > >> >> > Budget Dial Up has a prepaid service that allows you to
> > >> >> > > > >> >> > buy
> > >> >> > > > >> >> > just a
> > >> >> > > > >> >> > few
> > >> >> > > > >> >> > hours at a time).
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > Generally speaking, if an old machine has either a
> > >> >> > > > >> >> > serial
> > >> >> > > > >> >> > or
> > >> >> > > > >> >> > parallel
> > >> >> > > > >> >> > port
> > >> >> > > > >> >> > and you can get it to boot into DOS, there is always a
> > >> >> > > > >> >> > way
> > >> >> > > > >> >> > to
> > >> >> > > > >> >> > transfer
> > >> >> > > > >> >> > files to another machine.�  Even if it has no floppy you
> > >> >> > > > >> >> > can use
> > >> >> > > > >> >> > another
> > >> >> > > > >> >> > DOS machine running Laplink.� If it does have a floppy
> > >> >> > > > >> >> > there are a
> > >> >> > > > >> >> > lot
> > >> >> > > > >> >> > of
> > >> >> > > > >> >> > file transfer programs out there, from Kermit to the
> > >> >> > > > >> >> > original
> > >> >> > > > >> >> > version
> > >> >> > > > >> >> > of
> > >> >> > > > >> >> > Procomm that will fit on a single floppy.
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB of
> > >> >> > > > >> >> > RAM... a
> > >> >> > > > >> >> > full
> > >> >> > > > >> >> > install takes (IIRC) about 7MB of hdd.� Running Win95
> > >> >> > > > >> >> > would
> > >> >> > > > >> >> > be
> > >> >> > > > >> >> > tricky
> > >> >> > > > >> >> > and
> > >> >> > > > >> >> > would require some hardware tweaks even to make a slow
> > >> >> > > > >> >> > machine...
> > >> >> > > > >> >> > kind
> > >> >> > > > >> >> > of
> > >> >> > > > >> >> > an extreme project.�  I've heard of a Linux distro that
> > >> >> > > > >> >> > will fit on
> > >> >> > > > >> >> > a
> > >> >> > > > >> >> > single floppy and run on systems with limited resources
> > >> >> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) but
> > >> >> > > > >> >> > even that
> > >> >> > > > >> >> > one
> > >> >> > > > >> >> > seems to want 4MB of RAM.
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > There are plenty of people on the web who have too much
> > >> >> > > > >> >> > time on
> > >> >> > > > >> >> > their
> > >> >> > > > >> >> > hands and are still playing with machines even older
> > >> >> > > > >> >> > than
> > >> >> > > > >> >> > the
> > >> >> > > > >> >> > Grid...
> > >> >> > > > >> >> > You
> > >> >> > > > >> >> > can still buy new after-market accessories for
> > >> >> > > > >> >> > Commodores,
> > >> >> > > > >> >> > for
> > >> >> > > > >> >> > example,
> > >> >> > > > >> >> > so
> > >> >> > > > >> >> > don't assume that there are no new solutions to old
> > >> >> > > > >> >> > problems.
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@>
> > >> >> > > > >> >> > wrote:
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts the
> > >> >> > > > >> >> >> > parallel
> > >> >> > > > >> >> >> > port
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > a NIC... although I've been wondering lately if it
> > >> >> > > > >> >> >> > might
> > >> >> > > > >> >> >> > not have
> > >> >> > > > >> >> >> > made
> > >> >> > > > >> >> >> > equally good sense to use a device server on the
> > >> >> > > > >> >> >> > serial
> > >> >> > > > >> >> >> > port...?
> > >> >> > > > >> >> >> > And,
> > >> >> > > > >> >> >> > of course, the Arachne browser... not many choices
> > >> >> > > > >> >> >> > for a
> > >> >> > > > >> >> >> > DOS
> > >> >> > > > >> >> >> > browser
> > >> >> > > > >> >> >> > are there? I used it to check my Yahoo web mail and
> > >> >> > > > >> >> >> > I'll
> > >> >> > > > >> >> >> > have to
> > >> >> > > > >> >> >> > say
> > >> >> > > > >> >> >> > that it gave a whole new dimension of meaning to the
> > >> >> > > > >> >> >> > word "slow."
> > >> >> > > > >> >> >> > Go
> > >> >> > > > >> >> >> > ahead, make a pot of tea while it's loading that
> > >> >> > > > >> >> >> > page,
> > >> >> > > > >> >> >> > it will be
> > >> >> > > > >> >> >> > a
> > >> >> > > > >> >> >> > while.
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran
> > >> >> > > > >> >> >> > into a
> > >> >> > > > >> >> >> > web page
> > >> >> > > > >> >> >> > last
> > >> >> > > > >> >> >> > week of a guy who was competing with a friend to see
> > >> >> > > > >> >> >> > who
> > >> >> > > > >> >> >> > could
> > >> >> > > > >> >> >> > force
> > >> >> > > > >> >> >> > Windows XP to run with the least resources. It won't
> > >> >> > > > >> >> >> > install
> > >> >> > > > >> >> >> > unless
> > >> >> > > > >> >> >> > it
> > >> >> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor
> > >> >> > > > >> >> >> > but,
> > >> >> > > > >> >> >> > once
> > >> >> > > > >> >> >> > installed
> > >> >> > > > >> >> >> > you can remove RAM and underclock the machine... He
> > >> >> > > > >> >> >> > said
> > >> >> > > > >> >> >> > he got
> > >> >> > > > >> >> >> > one
> > >> >> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock
> > >> >> > > > >> >> >> > and
> > >> >> > > > >> >> >> > it took a
> > >> >> > > > >> >> >> > half
> > >> >> > > > >> >> >> > hour to boot.
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > I scored an HP 95LX a while back and someday, when I
> > >> >> > > > >> >> >> > have nothing
> > >> >> > > > >> >> >> > else
> > >> >> > > > >> >> >> > to do (Hah!) it might be interesting to see if I can
> > >> >> > > > >> >> >> > get
> > >> >> > > > >> >> >> > online
> > >> >> > > > >> >> >> > with
> > >> >> > > > >> >> >> > a
> > >> >> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe that
> > >> >> > > > >> >> >> > Contiki
> > >> >> > > > >> >> >> > OS/browser
> > >> >> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@"
> > >> >> > > > >> >> >> > <doug@> wrote:
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > Like the hack job? :O
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... someone
> > >> >> > > > >> >> >> > > swapped
> > >> >> > > > >> >> >> > > screes?
> > >> >> > > > >> >> >> > > Should I take the kbd apart and clean it (will that
> > >> >> > > > >> >> >> > > likely
> > >> >> > > > >> >> >> > > fix it?) or look for a replacement?
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > So what can I do with this thing if I put more mem
> > >> >> > > > >> >> >> > > in
> > >> >> > > > >> >> >> > > it?
> > >> >> > > > >> >> >> > > Its all accessed funky through expaned mem methods,
> > >> >> > > > >> >> >> > > isn't it?
> > >> >> > > > >> >> >> > > I have a coprocessor I could put in this but not
> > >> >> > > > >> >> >> > > sure
> > >> >> > > > >> >> >> > > of
> > >> >> > > > >> >> >> > > the point there.
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > I think I might like to accomplish getting it on
> > >> >> > > > >> >> >> > > the
> > >> >> > > > >> >> >> > > web.
> > >> >> > > > >> >> >> > > I'd need the LAN hardware I guess.
> > >> >> > > > >> >> >> > > Any other ideas?
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two
> > >> >> > > > >> >> >> > > contact on
> > >> >> > > > >> >> >> > > it that mate inside the cavity. But one of the two
> > >> >> > > > >> >> >> > > spring
> > >> >> > > > >> >> >> > > contacts
> > >> >> > > > >> >> >> > > inside is "rubberized", so only the one contact
> > >> >> > > > >> >> >> > > hits
> > >> >> > > > >> >> >> > > metal to
> > >> >> > > > >> >> >> > > metal.
> > >> >> > > > >> >> >> > > So the P.S. only works using the cord to go from
> > >> >> > > > >> >> >> > > the
> > >> >> > > > >> >> >> > > P.S. into
> > >> >> > > > >> >> >> > > the
> > >> >> > > > >> >> >> > > radial DC jack. Strange?
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> > > DC
> > >> >> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > >> >> > > > >> >> >> > <Jeriddian@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Great job, Doug!
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Isn't it nice when you manage to salvage one of
> > >> >> > > > >> >> >> > > > these
> > >> >> > > > >> >> >> > > > beautiful
> > >> >> > > > >> >> >> > machines? And yep, that's the way it works.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Once you restore battery power to the 1287A, the
> > >> >> > > > >> >> >> > > > CMOS
> > >> >> > > > >> >> >> > > > registers
> > >> >> > > > >> >> >> > are again active. It's just that they're filled with
> > >> >> > > > >> >> >> > nonsense, so
> > >> >> > > > >> >> >> > the
> > >> >> > > > >> >> >> > computer tells you the clock had stopped (which it
> > >> >> > > > >> >> >> > did),
> > >> >> > > > >> >> >> > and
> > >> >> > > > >> >> >> > simply
> > >> >> > > > >> >> >> > prompts you to reset the time. Once you do that and
> > >> >> > > > >> >> >> > reboot,
> > >> >> > > > >> >> >> > everything's hunky-dory.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > You can probably find some more 256K sticks
> > >> >> > > > >> >> >> > > > somewhere and
> > >> >> > > > >> >> >> > > > upgrade
> > >> >> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to
> > >> >> > > > >> >> >> > Ver.
> > >> >> > > > >> >> >> > 6.22.
> > >> >> > > > >> >> >> > Great
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > hear the HDD is good too.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > I recently got a great deal. There was a 1520 on
> > >> >> > > > >> >> >> > > > sale on ebay
> > >> >> > > > >> >> >> > > > that
> > >> >> > > > >> >> >> > I looked at, however it was strange. It was
> > >> >> > > > >> >> >> > definitely
> > >> >> > > > >> >> >> > branded a
> > >> >> > > > >> >> >> > 1520,
> > >> >> > > > >> >> >> > and advertised that way, but the flip up screen said
> > >> >> > > > >> >> >> > it
> > >> >> > > > >> >> >> > was a 386
> > >> >> > > > >> >> >> > machine. I decided to get it, and it was only about
> > >> >> > > > >> >> >> > $90
> > >> >> > > > >> >> >> > with
> > >> >> > > > >> >> >> > shipping.
> > >> >> > > > >> >> >> > When I got the machine, I was very excited when it
> > >> >> > > > >> >> >> > began
> > >> >> > > > >> >> >> > to post,
> > >> >> > > > >> >> >> > because I got a full 8MB of RAM! It of course
> > >> >> > > > >> >> >> > displayed
> > >> >> > > > >> >> >> > the
> > >> >> > > > >> >> >> > configuration error 02 indicating the CMOS battery
> > >> >> > > > >> >> >> > was
> > >> >> > > > >> >> >> > dead. So I
> > >> >> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A
> > >> >> > > > >> >> >> > model, but
> > >> >> > > > >> >> >> > that
> > >> >> > > > >> >> >> > was
> > >> >> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I
> > >> >> > > > >> >> >> > had a
> > >> >> > > > >> >> >> > spare.
> > >> >> > > > >> >> >> > Imagine my surprise and joy when I took the keyboard
> > >> >> > > > >> >> >> > off
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > discover
> > >> >> > > > >> >> >> > that not only was this really a 386 machine (a 1530),
> > >> >> > > > >> >> >> > but it also
> > >> >> > > > >> >> >> > had
> > >> >> > > > >> >> >> > the math coprocessor 30387 chip as well! I replaced
> > >> >> > > > >> >> >> > the
> > >> >> > > > >> >> >> > 1287A and
> > >> >> > > > >> >> >> > this
> > >> >> > > > >> >> >> > solved the configuration error just fine. But alas, I
> > >> >> > > > >> >> >> > didn't get
> > >> >> > > > >> >> >> > a
> > >> >> > > > >> >> >> > triple crown winner here. The Conner drive was
> > >> >> > > > >> >> >> > definitely dead.
> > >> >> > > > >> >> >> > But
> > >> >> > > > >> >> >> > heck, getting another HDD is easy compared to the
> > >> >> > > > >> >> >> > other
> > >> >> > > > >> >> >> > benefits!
> > >> >> > > > >> >> >> > The
> > >> >> > > > >> >> >> > original owner of this machine definitely took care
> > >> >> > > > >> >> >> > of
> > >> >> > > > >> >> >> > it.
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > Phil
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
> > >> >> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and
> > >> >> > > > >> >> >> > > > > ran
> > >> >> > > > >> >> >> > > > > the wires
> > >> >> > > > >> >> >> > > > > to
> > >> >> > > > >> >> >> > > > > a
> > >> >> > > > >> >> >> > convenient place for the battery. Upon power up it
> > >> >> > > > >> >> >> > said
> > >> >> > > > >> >> >> > > > > that the RTC was stopped, and it needed
> > >> >> > > > >> >> >> > > > > setting.
> > >> >> > > > >> >> >> > > > > The "stopped" message threw me, I thought
> > >> >> > > > >> >> >> > > > > something was
> > >> >> > > > >> >> >> > > > > wrong
> > >> >> > > > >> >> >> > > > > with
> > >> >> > > > >> >> >> > > > > the chip. It took an F1 to continue and went
> > >> >> > > > >> >> >> > > > > right
> > >> >> > > > >> >> >> > > > > through
> > >> >> > > > >> >> >> > > > > POST
> > >> >> > > > >> >> >> > and Autoexec.
> > >> >> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL directory
> > >> >> > > > >> >> >> > > > > set
> > >> >> > > > >> >> >> > > > > the RTC.
> > >> >> > > > >> >> >> > > > > Now it boots cleanly.
> > >> >> > > > >> >> >> > > > > Has Lotus123 on the HD.
> > >> >> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 stuff"...
> > >> >> > > > >> >> >> > > > > page 2!
> > >> >> > > > >> >> >> > > > > The only remaining issue is that a few keys on
> > >> >> > > > >> >> >> > > > > the
> > >> >> > > > >> >> >> > > > > keyboard
> > >> >> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an external
> > >> >> > > > >> >> >> > > > > kbd
> > >> >> > > > >> >> >> > > > > everything
> > >> >> > > > >> >> >> > > > > works.
> > >> >> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01
> > >> >> > > > >> >> >> > > > > 386
> > >> >> > > > >> >> >> > > > > with 1MB
> > >> >> > > > >> >> >> > > > > RAM,
> > >> >> > > > >> >> >> > > > > a
> > >> >> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some
> > >> >> > > > >> >> >> > smokin'
> > >> >> > > > >> >> >> > system!
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > >
> > >> >> > > > >> >> >> > > > > > Thanks so much that was great info. I had no
> > >> >> > > > >> >> >> > > > > > idea on the
> > >> >> > > > >> >> >> > > > > > X2
> > >> >> > > > >> >> >> > > > > > being a rating. May have to try it without
> > >> >> > > > >> >> >> > > > > > them
> > >> >> > > > >> >> >> > > > > > just to
> > >> >> > > > >> >> >> > > > > > make sure the rest of it is still good.
> > >> >> > > > >> >> >> > > > > >
> > >> >> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "fullsizewagon"
> > >> >> > > > >> >> >> > <andrebakken@> wrote:
> > >> >> > > > >> >> >> > > > > > >
> > >> >> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which makes
> > >> >> > > > >> >> >> > > > > > > a
> > >> >> > > > >> >> >> > > > > > > big
> > >> >> > > > >> >> >> > > > > > > difference.
> > >> >> > > > >> >> >> > The X2 also signifies they're an enhanced type meant
> > >> >> > > > >> >> >> > to
> > >> >> > > > >> >> >> > go
> > >> >> > > > >> >> >> > directly
> > >> >> > > > >> >> >> > across the mains. Be sure to get X2 rated
> > >> >> > > > >> >> >> > replacements.
> > >> >> > > > >> >> >> > > > > > > The PSU will work without those cap's in
> > >> >> > > > >> >> >> > > > > > > place, but
> > >> >> > > > >> >> >> > > > > > > will
> > >> >> > > > >> >> >> > radiate more interference/noise out onto the mains.
> > >> >> > > > >> >> >> > > > > > >
> > >> >> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > There are two in there that are the same.
> > >> >> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
> > >> >> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a square
> > >> >> > > > >> >> >> > > > > > > > package.
> > >> >> > > > >> >> >> > > > > > > > The bottom is clear so you can see the
> > >> >> > > > >> >> >> > > > > > > > radial shape.
> > >> >> > > > >> >> >> > > > > > > > I have them out already.
> > >> >> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > DC
> > >> >> > > > >> >> >> > > > > ; > >
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian"
> > >> >> > > > >> >> >> > <Jeriddian@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > Good Find, DC
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > I guess they got burnt to the point
> > >> >> > > > >> >> >> > > > > > > > > where
> > >> >> > > > >> >> >> > > > > > > > > you can't
> > >> >> > > > >> >> >> > identify the capcity amount. Could you give me the
> > >> >> > > > >> >> >> > output voltage
> > >> >> > > > >> >> >> > and
> > >> >> > > > >> >> >> > amperage? I'll look through my units and see if I can
> > >> >> > > > >> >> >> > identify
> > >> >> > > > >> >> >> > them
> > >> >> > > > >> >> >> > for you.
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > Phil
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > I posted pictures of what looks like
> > >> >> > > > >> >> >> > > > > > > > > > a
> > >> >> > > > >> >> >> > > > > > > > > > failed cap
> > >> >> > > > >> >> >> > > > > > > > > > in
> > >> >> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
> > >> >> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
> > >> >> > > > >> >> >> > > > > > > > > > Any identification tips welcome,
> > >> >> > > > >> >> >> > > > > > > > > > thanks.
> > >> >> > > > >> >> >> > > > > > > > > > There appears to be two of the same
> > >> >> > > > >> >> >> > > > > > > > > > caps, would
> > >> >> > > > >> >> >> > replace both
> > >> >> > > > >> >> >> > > > > > > > > > of course.
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > DC
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
> > >> >> > > > >> >> >> > "techtalklive@" <doug@>
> > >> >> > > > >> >> >> > wrote:
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > > I am considering tackling the
> > >> >> > > > >> >> >> > > > > > > > > > > repair
> > >> >> > > > >> >> >> > > > > > > > > > > of a 1530
> > >> >> > > > >> >> >> > > > > > > > > > > that
> > >> >> > > > >> >> >> > > > > > > > > > > does not respond to the power
> > >> >> > > > >> >> >> > > > > > > > > > > switch.
> > >> >> > > > >> >> >> > > > > > > > > > > The power
> > >> >> > > > >> >> >> > > > > > > > > > > supply
> > >> >> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I think
> > >> >> > > > >> >> >> > > > > > > > > > > its
> > >> >> > > > >> >> >> > > > > > > > > > > fine
> > >> >> > > > >> >> >> > (unfortunately,
> > >> >> > > > >> >> >> > > > > > > > > > > that would have been an easy
> > >> >> > > > >> >> >> > > > > > > > > > > problem
> > >> >> > > > >> >> >> > > > > > > > > > > isolation!)
> > >> >> > > > >> >> >> > > > > > > > > > > So its something internal. I have
> > >> >> > > > >> >> >> > > > > > > > > > > the
> > >> >> > > > >> >> >> > > > > > > > > > > service
> > >> >> > > > >> >> >> > > > > > > > > > > manuals
> > >> >> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe I'd
> > >> >> > > > >> >> >> > > > > > > > > > > get
> > >> >> > > > >> >> >> > > > > > > > > > > some
> > >> >> > > > >> >> >> > > > > > > > > > > pointers
> > >> >> > > > >> >> >> > form
> > >> >> > > > >> >> >> > > > > > > > > > > folks who have already performed
> > >> >> > > > >> >> >> > > > > > > > > > > cold
> > >> >> > > > >> >> >> > > > > > > > > > > stone
> > >> >> > > > >> >> >> > > > > > > > > > > dead
> > >> >> > > > >> >> >> > diagnosis.
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI this
> > >> >> > > > >> >> >> > > > > > > > > > > very clean
> > >> >> > > > >> >> >> > > > > > > > > > > 1530
> > >> >> > > > >> >> >> > > > > > > > > > > will
> > >> >> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > > > Thanks in advance,
> > >> >> > > > >> >> >> > > > > > > > > > > DC
> > >> >> > > > >> >> >> > > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > > >
> > >> >> > > > >> >> >> > > > > > > >
> > >> >> > > > >> >> >> > > > > > >
> > >> >> > > > >> >> >> > > > > >
> > >> >> > > > >> >> >> > > > >
> > >> >> > > > >> >> >> > > >
> > >> >> > > > >> >> >> > >
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> Since we are on the topic of TCP does anyone have a
> > >> >> > > > >> >> >> formula stashed
> > >> >> > > > >> >> >> that
> > >> >> > > > >> >> >> can be easily had to run say serial (probably ppp) from
> > >> >> > > > >> >> >> something
> > >> >> > > > >> >> >> like
> > >> >> > > > >> >> >> a
> > >> >> > > > >> >> >> small system like the raspberry pi serially to a system
> > >> >> > > > >> >> >> with dos
> > >> >> > > > >> >> >> and a
> > >> >> > > > >> >> >> stack?� It's been so long since I messed with dos
> > >> >> > > > >> >> >> environment
> > >> >> > > > >> >> >> networking
> > >> >> > > > >> >> >> I forget.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> I think windows of some sort had trumpet to handle part
> > >> >> > > > >> >> >> of
> > >> >> > > > >> >> >> the
> > >> >> > > > >> >> >> equation,
> > >> >> > > > >> >> >> but I don' t have any references right now over a dos
> > >> >> > > > >> >> >> stack.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> Probably something to do windows 3.1 or win95 / win98
> > >> >> > > > >> >> >> would be
> > >> >> > > > >> >> >> better,
> > >> >> > > > >> >> >> but I don't know if the hardware here would be up to
> > >> >> > > > >> >> >> those
> > >> >> > > > >> >> >> os's.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would be
> > >> >> > > > >> >> >> nice too.
> > >> >> > > > >> >> >> I'm
> > >> >> > > > >> >> >> asking for everything here.� Objective is to have
> > >> >> > > > >> >> >> something that
> > >> >> > > > >> >> >> could
> > >> >> > > > >> >> >> suck off or load a disk image with a floppy boot.� I
> > >> >> > > > >> >> >> suspect it was
> > >> >> > > > >> >> >> a
> > >> >> > > > >> >> >> difficult thing to get going in the day, though, and
> > >> >> > > > >> >> >> even
> > >> >> > > > >> >> >> wors now.
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >> jim
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >> > ,___
> > >> >> > > > >> >> >> >
> > >> >> > > > >> >> >>
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > ------------------------------------
> > >> >> > > > >> >> >
> > >> >> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo!
> > >> >> > > > >> >> > Groups
> > >> >> > > > >> >> > Links
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >> >
> > >> >> > > > >> >>
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> > ------------------------------------
> > >> >> > > > >> >
> > >> >> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> > >> >> > Links
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >> >
> > >> >> > > > >>
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > > ------------------------------------
> > >> >> > > > >
> > >> >> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
> > >> >> > > > > Links
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > > >
> > >> >> > > >
> > >> >> > >
> > >> >> >
> > >> >>
> > >> >>
> > >> >>
> > >> >>
> > >> >> ------------------------------------
> > >> >>
> > >> >> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >> >>
> > >> >
> > >> >
> > >> >
> > >> >
> > >> > ------------------------------------
> > >> >
> > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >> >
> > >> >
> > >> >
> > >>
> > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >
> > >
> > >
> >
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2597
Date: Sun, 21 Oct 2012 19:42:30 -0000
From: "techtalklive@..."
Subject: Re: 1530 VGA blue LCD

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I posted a careful photo of my screen in Doug's 1530 stuff.
> The screen is painful to use and I've tried all the contrast controls
> of CONFIG and DISPLAY.
> Is this typical for such a display or is the LCD/Backlight going.
> I remember these monochrome LCDs being A LOT prettier... but
> perhaps its the VGA grey scaling that makes it all muddy.
>

Well the screen is actually a little bluer than the pic shows and
it looks better in the pic than to the eye... but
I remember those gleeming white on blue monochrome displays of
yesteryear that I wish this looked like.

Am I missing something?

Yahoo! Message number: 2598
Date: Sun, 21 Oct 2012 13:01:48 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: 1530 VGA blue LCD
text/plain; charset=iso-8859-1

No, I don't think so.� The display looks good.
Maybe there is some fancy polarizor on your phone or camera that sharpened up the display.� But from what I can tell, it looks great.
-Shawn


________________________________
 From: "techtalklive@..." <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Sunday, October 21, 2012 3:42 PM
Subject: [RuGRiD-Laptop] Re: 1530 VGA blue LCD



--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I posted a careful photo of my screen in Doug's 1530 stuff.
> The screen is painful to use and I've tried all the contrast controls
> of CONFIG and DISPLAY.
> Is this typical for such a display or is the LCD/Backlight going.
> I remember these monochrome LCDs being A LOT prettier... but
> perhaps its the VGA grey scaling that makes it all muddy.
>

Well the screen is actually a little bluer than the pic shows and
it looks better in the pic than to the eye... but
I remember those gleeming white on blue monochrome displays of
yesteryear that I wish this looked like.

Am I missing something?




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2599
Date: Sun, 21 Oct 2012 20:38:24 -0000
From: "Andrea"
Subject: Re: Best GRID 1530 Processor

hallo,
i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
Andrea


--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I suspect you are right. I hope you at least enjoyed my rant!
> I'll probably try a Cyrix if I'm still at this when one comes by.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > The original part was a 386DX-16. Got pics to prove it.
> > > Yes the 33Mhz part I put in is a DX and is working great.
> > >
> > > About the TI486DLC... a loose reading about the chip suggested to me
> > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > is bricked.
> > >
> > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > >
> > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > If that's so it chaps my butt...
> > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > >
> > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > >
> > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > Does the 16bit data bus, if that is what it is, decouple the
> > > DX's critical timing so that the lower rated parts work OK?
> > > Or dos the part also not actually get a 25Mhz clock?
> > >
> > > Inquiring minds want to know!
> > >
> > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > >
> > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > >
> > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > Q. Which one of the Cyrix Upgrade products do I use?
> > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > >
> > > On the other hand, what am I fighting for?  Its still going to
> > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > try to max it out.
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > >
> > > > Phil
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > OK I'll talk to myself here...
> > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > Glad this one didn't go on the space shuttle.
> > > > > So I put a 33Mhz part in.
> > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > so I've now read.
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > Then, almost forgetting the 486 history, I found
> > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > be the best in class 386 replacement...
> > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > >
> > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > >
> > > > > > Concur?
> > > > > >
> > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > around the MB...
> > > > > >
> > > > > > Other optimizing ideas?
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2600
Date: Sun, 21 Oct 2012 20:46:11 -0000
From: "techtalklive@..."
Subject: Re: 1530 VGA blue LCD

By comparison, this 1520 is how I hoped it would look.
Just a totally different LCD I guess?
http://www.youtube.com/watch?v=UeN-kNO_8e0

--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> No, I don't think so.� The display looks good.
> Maybe there is some fancy polarizor on your phone or camera that sharpened up the display.� But from what I can tell, it looks great.
> -Shawn
>
>
> ________________________________
>  From: "techtalklive@..." <doug@...>
> To: RuGRiD-Laptop@yahoogroups.com 
> Sent: Sunday, October 21, 2012 3:42 PM
> Subject: [RuGRiD-Laptop] Re: 1530 VGA blue LCD
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I posted a careful photo of my screen in Doug's 1530 stuff.
> > The screen is painful to use and I've tried all the contrast controls
> > of CONFIG and DISPLAY.
> > Is this typical for such a display or is the LCD/Backlight going.
> > I remember these monochrome LCDs being A LOT prettier... but
> > perhaps its the VGA grey scaling that makes it all muddy.
> >
>
> Well the screen is actually a little bluer than the pic shows and
> it looks better in the pic than to the eye... but
> I remember those gleeming white on blue monochrome displays of
> yesteryear that I wish this looked like.
>
> Am I missing something?
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>
> � � http://docs.yahoo.com/info/terms/
>

Yahoo! Message number: 2601
Date: Sun, 21 Oct 2012 20:52:18 -0000
From: "techtalklive@..."
Subject: Re: Best GRID 1530 Processor

What the heck... my MB is completely different.
See the Doug's 1530 photos.
My CPU is along the front edge right next to the '87 socket.
Did you system have an SX in it to start with?

--- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@...> wrote:
>
> hallo,
> i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> Andrea
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I suspect you are right. I hope you at least enjoyed my rant!
> > I'll probably try a Cyrix if I'm still at this when one comes by.
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > The original part was a 386DX-16. Got pics to prove it.
> > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > >
> > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > is bricked.
> > > >
> > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > >
> > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > If that's so it chaps my butt...
> > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > >
> > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > >
> > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > DX's critical timing so that the lower rated parts work OK?
> > > > Or dos the part also not actually get a 25Mhz clock?
> > > >
> > > > Inquiring minds want to know!
> > > >
> > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > >
> > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > >
> > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > >
> > > > On the other hand, what am I fighting for?  Its still going to
> > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > try to max it out.
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > >
> > > > > Phil
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > OK I'll talk to myself here...
> > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > Glad this one didn't go on the space shuttle.
> > > > > > So I put a 33Mhz part in.
> > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > so I've now read.
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > be the best in class 386 replacement...
> > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > >
> > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > >
> > > > > > > Concur?
> > > > > > >
> > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > around the MB...
> > > > > > >
> > > > > > > Other optimizing ideas?
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2602
Date: Sun, 21 Oct 2012 22:19:46 -0000
From: "Andrea"
Subject: Re: Best GRID 1530 Processor

No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
sorry for my italianenglish.
Andrea


--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
>
> What the heck... my MB is completely different.
> See the Doug's 1530 photos.
> My CPU is along the front edge right next to the '87 socket.
> Did you system have an SX in it to start with?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> >
> > hallo,
> > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > Andrea
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I suspect you are right. I hope you at least enjoyed my rant!
> > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > >
> > > > Phil
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > >
> > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > is bricked.
> > > > >
> > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > >
> > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > If that's so it chaps my butt...
> > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > >
> > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > >
> > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > >
> > > > > Inquiring minds want to know!
> > > > >
> > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > >
> > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > >
> > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > >
> > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > try to max it out.
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > >
> > > > > > Phil
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > OK I'll talk to myself here...
> > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > So I put a 33Mhz part in.
> > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > so I've now read.
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > be the best in class 386 replacement...
> > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > >
> > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > >
> > > > > > > > Concur?
> > > > > > > >
> > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > around the MB...
> > > > > > > >
> > > > > > > > Other optimizing ideas?
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2603
Date: Sun, 21 Oct 2012 22:37:05 -0000
From: "techtalklive@..."
Subject: Re: Best GRID 1530 Processor

Any idea for why the MB is different in yours then?
Thanks for the link... don't think I can use that package
though.  Adapter?  Don't think there is verical room for an adapter.


--- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@...> wrote:
>
> No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> sorry for my italianenglish.
> Andrea
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> >
> > What the heck... my MB is completely different.
> > See the Doug's 1530 photos.
> > My CPU is along the front edge right next to the '87 socket.
> > Did you system have an SX in it to start with?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > >
> > > hallo,
> > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > Andrea
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > >
> > > > > Phil
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > >
> > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > is bricked.
> > > > > >
> > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > >
> > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > > If that's so it chaps my butt...
> > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > >
> > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > >
> > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > >
> > > > > > Inquiring minds want to know!
> > > > > >
> > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > >
> > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > > >
> > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > > >
> > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > try to max it out.
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > >
> > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > OK I'll talk to myself here...
> > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > So I put a 33Mhz part in.
> > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > so I've now read.
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > >
> > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > >
> > > > > > > > > Concur?
> > > > > > > > >
> > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > around the MB...
> > > > > > > > >
> > > > > > > > > Other optimizing ideas?
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2604
Date: Sun, 21 Oct 2012 22:42:30 -0000
From: "Andrea"
Subject: Re: Best GRID 1530 Processor

i'm sorry
the ti486sxlc2 is for upgrade the 1550sx it comes in Plastic QFP-100pin, without the adapter you have to desolder the original one...

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Any idea for why the MB is different in yours then?
> Thanks for the link... don't think I can use that package
> though.  Adapter?  Don't think there is verical room for an adapter.
>
>
> --- In RuGRiD-Laptop@...m, "Andrea" <zentaro.cane@> wrote:
> >
> > No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> > sorry for my italianenglish.
> > Andrea
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > >
> > > What the heck... my MB is completely different.
> > > See the Doug's 1530 photos.
> > > My CPU is along the front edge right next to the '87 socket.
> > > Did you system have an SX in it to start with?
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > >
> > > > hallo,
> > > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > > Andrea
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > > >
> > > > > > Phil
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > > >
> > > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > > is bricked.
> > > > > > >
> > > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > > >
> > > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > > > If that's so it chaps my butt...
> > > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > > >
> > > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > > >
> > > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > > >
> > > > > > > Inquiring minds want to know!
> > > > > > >
> > > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > > >
> > > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > > > >
> > > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > > > >
> > > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > > try to max it out.
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > >
> > > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > > >
> > > > > > > > Phil
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > OK I'll talk to myself here...
> > > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > > So I put a 33Mhz part in.
> > > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > > so I've now read.
> > > > > > > > >
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > >
> > > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > > >
> > > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > > >
> > > > > > > > > > Concur?
> > > > > > > > > >
> > > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > > around the MB...
> > > > > > > > > >
> > > > > > > > > > Other optimizing ideas?
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2605
Date: Mon, 22 Oct 2012 00:34:40 -0000
From: "jeriddian"
Subject: Re: Best GRID 1530 Processor

I think you're right, tech.

There is no room under the keyboard for anything. That's also one fo teh reasons why the 1287A RTC chip has to be flush with the PC board if it is replaced. The bottom of the keyboard acftually makes contact with both of thse chips. Although they don't use any kind of thermal connector, I wonder if the keyboard helps disperse some of the heat from the CPU, even though it doesn't require a heat sink. I don't think that CPU ever did.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> Any idea for why the MB is different in yours then?
> Thanks for the link... don't think I can use that package
> though.  Adapter?  Don't think there is verical room for an adapter.
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> >
> > No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> > sorry for my italianenglish.
> > Andrea
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > >
> > > What the heck... my MB is completely different.
> > > See the Doug's 1530 photos.
> > > My CPU is along the front edge right next to the '87 socket.
> > > Did you system have an SX in it to start with?
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > >
> > > > hallo,
> > > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > > Andrea
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > > >
> > > > > > Phil
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > > >
> > > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > > is bricked.
> > > > > > >
> > > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > > >
> > > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > > > If that's so it chaps my butt...
> > > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > > >
> > > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > > >
> > > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > > >
> > > > > > > Inquiring minds want to know!
> > > > > > >
> > > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > > >
> > > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > > > >
> > > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > > > >
> > > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > > try to max it out.
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > >
> > > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > > >
> > > > > > > > Phil
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > OK I'll talk to myself here...
> > > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > > So I put a 33Mhz part in.
> > > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > > so I've now read.
> > > > > > > > >
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > >
> > > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > > >
> > > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > > >
> > > > > > > > > > Concur?
> > > > > > > > > >
> > > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > > around the MB...
> > > > > > > > > >
> > > > > > > > > > Other optimizing ideas?
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2606
Date: Mon, 22 Oct 2012 00:37:11 -0000
From: "jeriddian"
Subject: Re: Best GRID 1530 Processor

I guess I'm confused then. I never heard of any of the 1530's ever being full 32 bit machines. I didn't think that happened until the 1550's came out.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@...> wrote:
>
> No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> sorry for my italianenglish.
> Andrea
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> >
> > What the heck... my MB is completely different.
> > See the Doug's 1530 photos.
> > My CPU is along the front edge right next to the '87 socket.
> > Did you system have an SX in it to start with?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > >
> > > hallo,
> > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > Andrea
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > >
> > > > > Phil
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > >
> > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > is bricked.
> > > > > >
> > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > >
> > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > > If that's so it chaps my butt...
> > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > >
> > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > >
> > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > >
> > > > > > Inquiring minds want to know!
> > > > > >
> > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > >
> > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > > >
> > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > > >
> > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > try to max it out.
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > >
> > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > OK I'll talk to myself here...
> > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > So I put a 33Mhz part in.
> > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > so I've now read.
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > >
> > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > >
> > > > > > > > > Concur?
> > > > > > > > >
> > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > around the MB...
> > > > > > > > >
> > > > > > > > > Other optimizing ideas?
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2607
Date: Mon, 22 Oct 2012 00:40:03 -0000
From: "jeriddian"
Subject: Re: 1530 VGA blue LCD

Some of the LCD displays did seem to be rather 'blah' and not have a lot of contrast to them. I don't know if age had something to do with it, or the brightness and contrast controls were just not that fine in their control. I have several of them. Nice video. Obviously, the CMOS battery needs replacing.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> By comparison, this 1520 is how I hoped it would look.
> Just a totally different LCD I guess?
> http://www.youtube.com/watch?v=UeN-kNO_8e0
>
> --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> >
> > No, I don't think so.� The display looks good.
> > Maybe there is some fancy polarizor on your phone or camera that sharpened up the display.� But from what I can tell, it looks great.
> > -Shawn
> >
> >
> > ________________________________
> >  From: "techtalklive@" <doug@>
> > To: RuGRiD-Laptop@yahoogroups.com
> > Sent: Sunday, October 21, 2012 3:42 PM
> > Subject: [RuGRiD-Laptop] Re: 1530 VGA blue LCD
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > I posted a careful photo of my screen in Doug's 1530 stuff.
> > > The screen is painful to use and I've tried all the contrast controls
> > > of CONFIG and DISPLAY.
> > > Is this typical for such a display or is the LCD/Backlight going.
> > > I remember these monochrome LCDs being A LOT prettier... but
> > > perhaps its the VGA grey scaling that makes it all muddy.
> > >
> >
> > Well the screen is actually a little bluer than the pic shows and
> > it looks better in the pic than to the eye... but
> > I remember those gleeming white on blue monochrome displays of
> > yesteryear that I wish this looked like.
> >
> > Am I missing something?
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
> > � � http://docs.yahoo.com/info/terms/
> >
>

Yahoo! Message number: 2608
Date: Mon, 22 Oct 2012 00:41:44 -0000
From: "jeriddian"
Subject: Re: 1530 VGA blue LCD

Yeah, some of the LCD's are quite faded. I have a good number of them. MAybe they're too old, I think.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> I posted a careful photo of my screen in Doug's 1530 stuff.
> The screen is painful to use and I've tried all the contrast controls
> of CONFIG and DISPLAY.
> Is this typical for such a display or is the LCD/Backlight going.
> I remember these monochrome LCDs being A LOT prettier... but
> perhaps its the VGA grey scaling that makes it all muddy.
>

Yahoo! Message number: 2609
Date: Mon, 22 Oct 2012 00:47:46 -0000
From: "jeriddian"
Subject: Re: Best GRID 1530 Processor

The possible memory combinations are as follwos:

4 256 KB sticks for 1 MB RAM (slots 1,3,5,7)
8 256 KB sticks for 2 MB RAM
4 1MB sticks for 4 MB RAM (slots 1,3,5,7)
8 1 MB sticks for 8 MB RAM

Technically we were officially told the 1520 would not accept more than 4 MB RAM, however, there have been several poeple who have put 8MB in their 1520's and made it work. I have also seen different combinations when just four sticks are being used such as slots 1,2,5,6.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@...> wrote:
>
> i'm sorry
> the ti486sxlc2 is for upgrade the 1550sx it comes in Plastic QFP-100pin, without the adapter you have to desolder the original one...
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > Any idea for why the MB is different in yours then?
> > Thanks for the link... don't think I can use that package
> > though.  Adapter?  Don't think there is verical room for an adapter.
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > >
> > > No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> > > sorry for my italianenglish.
> > > Andrea
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > >
> > > > What the heck... my MB is completely different.
> > > > See the Doug's 1530 photos.
> > > > My CPU is along the front edge right next to the '87 socket.
> > > > Did you system have an SX in it to start with?
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > > >
> > > > > hallo,
> > > > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > > > Andrea
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > >
> > > > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > >
> > > > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > > > >
> > > > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > > > is bricked.
> > > > > > > >
> > > > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > > > >
> > > > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > > > > If that's so it chaps my butt...
> > > > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > > > >
> > > > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > > > >
> > > > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > > > >
> > > > > > > > Inquiring minds want to know!
> > > > > > > >
> > > > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > > > >
> > > > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > > > > >
> > > > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > > > > >
> > > > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > > > try to max it out.
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > > >
> > > > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > > > >
> > > > > > > > > Phil
> > > > > > > > >
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > >
> > > > > > > > > > OK I'll talk to myself here...
> > > > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > > > So I put a 33Mhz part in.
> > > > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > > > so I've now read.
> > > > > > > > > >
> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > > >
> > > > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > > > >
> > > > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > > > >
> > > > > > > > > > > Concur?
> > > > > > > > > > >
> > > > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > > > around the MB...
> > > > > > > > > > >
> > > > > > > > > > > Other optimizing ideas?
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2610
Date: Mon, 22 Oct 2012 03:27:24 -0000
From: "techtalklive@..."
Subject: Re: Best GRID 1530 Processor

Thanks so much!
I might guess their was drive/load issues with the 1520 for 8 SIPPs
at the time.  So could be hit or miss depending on the memory parts.
Guessing again, SIPPS were gone by the time higher density memory
became available.  I'm going to be using 3 chip SIMMs cause
the chips are turned on their side so the height is lower than
the old 9 chip parts.  I'm going to wire in 4 SIMMs to test.
If it goes well I'll put 4 more in.
Then I can run something like muLinux.

I got lucky too, my model has 100MB drive.
*whew*

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> The possible memory combinations are as follwos:
>
> 4 256 KB sticks for 1 MB RAM (slots 1,3,5,7)
> 8 256 KB sticks for 2 MB RAM
> 4 1MB sticks for 4 MB RAM (slots 1,3,5,7)
> 8 1 MB sticks for 8 MB RAM
>
> Technically we were officially told the 1520 would not accept more than 4 MB RAM, however, there have been several poeple who have put 8MB in their 1520's and made it work. I have also seen different combinations when just four sticks are being used such as slots 1,2,5,6.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> >
> > i'm sorry
> > the ti486sxlc2 is for upgrade the 1550sx it comes in Plastic QFP-100pin, without the adapter you have to desolder the original one...
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > Any idea for why the MB is different in yours then?
> > > Thanks for the link... don't think I can use that package
> > > though.  Adapter?  Don't think there is verical room for an adapter.
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > >
> > > > No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> > > > sorry for my italianenglish.
> > > > Andrea
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@...m, "techtalklive@" <doug@> wrote:
> > > > >
> > > > >
> > > > > What the heck... my MB is completely different.
> > > > > See the Doug's 1530 photos.
> > > > > My CPU is along the front edge right next to the '87 socket.
> > > > > Did you system have an SX in it to start with?
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > > > >
> > > > > > hallo,
> > > > > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > > > > Andrea
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > >
> > > > > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > > > > >
> > > > > > > > Phil
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > > > > >
> > > > > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > > > > is bricked.
> > > > > > > > >
> > > > > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > > > > >
> > > > > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > > > > > If that's so it chaps my butt...
> > > > > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > > > > >
> > > > > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > > > > >
> > > > > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > > > > >
> > > > > > > > > Inquiring minds want to know!
> > > > > > > > >
> > > > > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > > > > >
> > > > > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > > > > > >
> > > > > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > > > > > >
> > > > > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > > > > try to max it out.
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > > > >
> > > > > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > > > > >
> > > > > > > > > > Phil
> > > > > > > > > >
> > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > > >
> > > > > > > > > > > OK I'll talk to myself here...
> > > > > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > > > > So I put a 33Mhz part in.
> > > > > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > > > > so I've now read.
> > > > > > > > > > >
> > > > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > > > >
> > > > > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > > > > >
> > > > > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > > > > >
> > > > > > > > > > > > Concur?
> > > > > > > > > > > >
> > > > > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > > > > around the MB...
> > > > > > > > > > > >
> > > > > > > > > > > > Other optimizing ideas?
> > > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2611
Date: Mon, 22 Oct 2012 03:28:38 -0000
From: "techtalklive@..."
Subject: Re: 1530 VGA blue LCD

Good to know you have seen the same thing... and its
not a VGA/greyscale  vs Monochrome thing, right?

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Yeah, some of the LCD's are quite faded. I have a good number of them. MAybe they're too old, I think.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > I posted a careful photo of my screen in Doug's 1530 stuff.
> > The screen is painful to use and I've tried all the contrast controls
> > of CONFIG and DISPLAY.
> > Is this typical for such a display or is the LCD/Backlight going.
> > I remember these monochrome LCDs being A LOT prettier... but
> > perhaps its the VGA grey scaling that makes it all muddy.
> >
>

Yahoo! Message number: 2612
Date: Mon, 22 Oct 2012 03:39:43 -0000
From: "techtalklive@..."
Subject: Re: Best GRID 1530 Processor

Fascinating.  So there could be different 1530 MB variants...
Any chance there is a cataloging of this somewhere?
Isn't it interesting how different Andrea's MB and my MB
are?

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> I guess I'm confused then. I never heard of any of the 1530's ever being full 32 bit machines. I didn't think that happened until the 1550's came out.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> >
> > No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> > sorry for my italianenglish.
> > Andrea
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > >
> > > What the heck... my MB is completely different.
> > > See the Doug's 1530 photos.
> > > My CPU is along the front edge right next to the '87 socket.
> > > Did you system have an SX in it to start with?
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > >
> > > > hallo,
> > > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > > Andrea
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > > > 
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > > >
> > > > > > Phil
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > > >
> > > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > > is bricked.
> > > > > > >
> > > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > > >
> > > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface.  ARGH.
> > > > > > > If that's so it chaps my butt...
> > > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > > >
> > > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > > >
> > > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > > >
> > > > > > > Inquiring minds want to know!
> > > > > > >
> > > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > > >
> > > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient!
> > > > > > >
> > > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2.
> > > > > > >
> > > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > > try to max it out.
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > >
> > > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > > >
> > > > > > > > Phil
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > OK I'll talk to myself here...
> > > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > > So I put a 33Mhz part in.
> > > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > > so I've now read.
> > > > > > > > >
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > >
> > > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > > > 
> > > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > > >
> > > > > > > > > > Concur?
> > > > > > > > > >
> > > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > > around the MB...
> > > > > > > > > >
> > > > > > > > > > Other optimizing ideas?
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2613
Date: Mon, 22 Oct 2012 01:49:34 -0400
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Re: Best GRID 1530 Processor
text/plain; charset=utf-8

I don't know if it means anything, but Andrea sent me a copy of his 1520 BIOS.  It was different than the other two BIOS versions I've seen in 1520's. It was unique. I remember wondering if it been hacked in from another vendor.
Looking at the file tonight, the copyright strings indicate its from Grid.  But there are BIOS error messages in German and French. I have not seen that in other Grid BIOS files.
-Shawn



-------- Original message --------
Subject: [RuGRiD-Laptop] Re: Best GRID 1530 Processor
From: "techtalklive@ymail.com" <doug@crawfordltd.com>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] Re: Best GRID 1530 Processor

Fascinating.  So there could be different 1530 MB variants...
Any chance there is a cataloging of this somewhere?
Isn't it interesting how different Andrea's MB and my MB
are?

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> I guess I'm confused then. I never heard of any of the 1530's ever being full 32 bit machines. I didn't think that happened until the 1550's came out.
> 
> Phil
> 
> --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> >
> > No, it's a full 32 bit computer, the original cpu was an intel386dx16, the Grid 1550sx have a 386sx cpu, possible upgrade:   http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180643654374
> > sorry for my italianenglish.
> > Andrea
> > 
> > 
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > 
> > > What the heck... my MB is completely different.
> > > See the Doug's 1530 photos.
> > > My CPU is along the front edge right next to the '87 socket.
> > > Did you system have an SX in it to start with?
> > > 
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > >
> > > > hallo,
> > > > i've uploaded some photos about my GRiD 1530 running a 486 upgrade. Best is ti486sxl2 running at 60mhz with cache enabled (landmark software)
> > > > Andrea
> > > > 
> > > > 
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > I suspect you are right. I hope you at least enjoyed my rant!
> > > > > I'll probably try a Cyrix if I'm still at this when one comes by.
> > > > > 
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > > I do remember reading the specs on the 1530 machine to be as I said. I hope that you can still work with it. I do know the Cyrix 486 should be able to work. I think there have been others on the forum who have reported that, but it's been awhile.
> > > > > > 
> > > > > > Phil
> > > > > > 
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > >
> > > > > > > The original part was a 386DX-16. Got pics to prove it.
> > > > > > > Yes the 33Mhz part I put in is a DX and is working great.
> > > > > > > 
> > > > > > > About the TI486DLC... a loose reading about the chip suggested to me
> > > > > > > it should drop in: Cyrix WIKI: "Its early CPU products included the 486SLC and 486DLC, released in 1992, which, despite their names, were pin-compatible with the 386SX and DX"
> > > > > > > but I read other places that it wasn't DESIGNED to be a drop in for 386 upgrades and that they would not be reliable, compatibility would be a problem.  It appears so in the GRiD 1530 case.  Or my chip
> > > > > > > is bricked.
> > > > > > > 
> > > > > > > I've not come across any info that 386DX chips work 16bit data width MBs... what you refer to as 16 bit mode. I see reference that
> > > > > > > the 386 starts in 16 bit mode then goes to 32 mode but I think that is referring to its software model.
> > > > > > > 
> > > > > > > On the other hand, I have read that the 1530 requires pairs of 30 pin SIPPs, and that suggests a 16 bit wide memory interface. ARGH.
> > > > > > > If that's so it chaps my butt...
> > > > > > > Finding a DX in there got me all excited that the 1530 was really a 32 bit MB. I have a mind to pull a pair of the SIMMs and verify the board really requires quad SIPPs.  Is it possible that there are 32bit version of the 1530?
> > > > > > > 
> > > > > > > Which begs the question, assuming that a DX can go on a MB designed for SX, why put a 386DX in there in production anyway?
> > > > > > > Was the 16Mhz DX cheap and plentiful at the time? Did GRiD/Tandy get a great deal on them and threw them in in LEU of an SX?
> > > > > > > 
> > > > > > > And how does a 16Mhz part cut it on a 25Mhz MB?
> > > > > > > Does the 16bit data bus, if that is what it is, decouple the
> > > > > > > DX's critical timing so that the lower rated parts work OK?
> > > > > > > Or dos the part also not actually get a 25Mhz clock?
> > > > > > > 
> > > > > > > Inquiring minds want to know!
> > > > > > > 
> > > > > > > I found references to 486 Cyrix parts that were DESIGNED as drop in replacements: the 5v clock doubled 486DRX2 and 486SRX2
> > > > > > > parts.  Perhaps there are TI and IBM parts too. It gets confusing!
> > > > > > > 
> > > > > > > If you are right about the board really being 16bit, that opens me up to looking for the SRX2 parts.  I can be patient! 
> > > > > > > 
> > > > > > > From: http://datasheets.chipdb.org/Cyrix/New%20Folder/faq386up.htm
> > > > > > > Q. Which one of the Cyrix Upgrade products do I use?
> > > > > > >     A. If you have a 386SX PC, use the CX-486SRX2-25/60. If you have a 386DX PC, use the CX-486DRX2. 
> > > > > > > 
> > > > > > > On the other hand, what am I fighting for?  Its still going to
> > > > > > > be a slow 8MB 386/486 machine... I guess its just a fun challenge to
> > > > > > > try to max it out.
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > >
> > > > > > > > The 1530 did use a full DX chip (32 bit), but the motherboard still ran in SX mode (16 bit), thus I believe that designation. So the 33 MHz chip was also a 386DX? And it didn't work? That would make sense to me, though. As to the 486 chips, I think the only ones that worked were the CYRIX 486 chips I heard about that were able to be fitted, and were the only ones that would work, but I'm not completely sure.
> > > > > > > > 
> > > > > > > > Phil
> > > > > > > > 
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > >
> > > > > > > > > OK I'll talk to myself here...
> > > > > > > > > Interestingly my "25Mhz" 1530 had a 386DX16 in the socket.
> > > > > > > > > Talk about early overclocking!  GRiD cut corners?
> > > > > > > > > Glad this one didn't go on the space shuttle.
> > > > > > > > > So I put a 33Mhz part in.
> > > > > > > > > I got confused on drop in parts and tried the 486DLC I had around.
> > > > > > > > > no go of course, its "wasn't intended for drop in compatibility"
> > > > > > > > > so I've now read.
> > > > > > > > > 
> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > > > > > > >
> > > > > > > > > > Revitalizing the 1530 GRiD got me looking into my stash of
> > > > > > > > > > old parts. First I found a '387. Put it in, it works.
> > > > > > > > > > Then, almost forgetting the 486 history, I found
> > > > > > > > > > a TI486DLC. So that's a 486 in 386 pinout with improved
> > > > > > > > > > internals and a 1k cache. So that got me thinking, what would
> > > > > > > > > > be the best in class 386 replacement...
> > > > > > > > > > So far I get that the answer is a TI486SXL-50.
> > > > > > > > > > 
> > > > > > > > > > 5V, 8K cache, x2 internal clock, built in 387 and of course 486 goodies.
> > > > > > > > > > Needs a dos sys file to enable the cache at boot.
> > > > > > > > > > 
> > > > > > > > > > Concur?
> > > > > > > > > > 
> > > > > > > > > > I don't suppose there is much hope in increasing the clocks
> > > > > > > > > > around the MB...
> > > > > > > > > > 
> > > > > > > > > > Other optimizing ideas?
> > > > > > gt; > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2614
Date: Mon, 22 Oct 2012 11:51:47 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?

Yeah, I'd heard about the external bay.  Very interesting.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "jeriddian" <Jeriddian@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Sunday, October 21, 2012 2:34 PM
Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?


> Accessing the bus might not be that hard. Shawn was able to hook up a 
> regular ISA cable that had both the Master and Slave connectors, which he 
> was using to try and boot the computer from a flash drive and it could see 
> the regular hard drive, I believe. So theoretically you could use the 
> second connnector for that purpose, but then again hooking up the AMI card 
> is another matter. I do have a couple of 1535's which have the extended 
> bus connector going through the bottom of the computer and hook up to an 
> axternal bay compartment which fits under the bottom of the computer and 
> can hook up two separate external cards like that. I've never messed with 
> it though. They're also in storage right now, so I can't access them.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@...> wrote:
>>
>> I wonder if it would be possible to rig up an 8-bit ISA slot somewhere
>> inside the 1530 so you could use one of those AMI cards.  Finding one 
>> would
>> be tough, though.
>>
>> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> "She said it was either her or the ham radio.  Over."
>>
>>
>> ----- Original Message ----- 
>> From: "techtalklive@..." <doug@...>
>> To: <RuGRiD-Laptop@yahoogroups.com>
>> Sent: Saturday, October 20, 2012 10:40 PM
>> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>>
>>
>> > I'm going to take a shot at shoe-horning some low height 1MB SIMMs
>> > in their.  Let ya'll know how it goes.
>> > That Megatrends card sounds familiar; I suspect I worried about
>> > drive support way back in the day.  Actually drive support
>> > is also an issue with these 1530s.
>> >
>> >
>> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> wrote:
>> >>
>> >> Wow.  And, I suppose if you could find SIPPs from, say, Crucial or
>> >> Corsair,
>> >> they'd charge you a mint.  I bought a 32MB FP SIMM for the first laser
>> >> printer I owned, and Crucial wanted about a buck and a half a meg. 
>> >> Yeah,
>> >> that Paradox adapter would be swell.  That may have gone the way of 
>> >> the
>> >> $50
>> >> card that American Megatrends used to make that would plug into any 
>> >> ISA
>> >> slot
>> >> and patch the BIOS so that you could use any size hard drive by any
>> >> manufacturer.  Lots of good ideas like that, but they just sort of 
>> >> faded
>> >> away.
>> >>
>> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> "She said it was either her or the ham radio.  Over."
>> >>
>> >>
>> >> ----- Original Message ----- 
>> >> From: "jeriddian" <Jeriddian@>
>> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> Sent: Thursday, October 18, 2012 9:41 PM
>> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >>
>> >>
>> >> > There was a company that at one time made an adaptation for the 
>> >> > GRiD's
>> >> > called paradox in which they made an adapter that fit into the pin
>> >> > slots
>> >> > (I think. I've never actually seen it, but this is what I heard) and
>> >> > into
>> >> > which you culd fit 2 4 MB SIMM's to give you 8 MB. I've looked for
>> >> > this,
>> >> > but never found it.  That would be cool to find and use.
>> >> >
>> >> > The problems with the memory adaptation is ther is very, very little
>> >> > room
>> >> > for the memory to fit. The MoBo was actually designed to fit the
>> >> > smallest
>> >> > RAM stick they made at the time. You have to use a low profile SIPP,
>> >> > one
>> >> > with no extra PC Board material off to the sides. You could try 
>> >> > laying
>> >> > the
>> >> > wired SIMM's over, but I looked at trying to do that with high 
>> >> > profile
>> >> > SIPP's and there really isn't any room to do that either. I think if
>> >> > someone coud come up with an adapter like the paradox I described 
>> >> > that
>> >> > fit
>> >> > 2 4 MB sticks to run in the eight rows of holes, that would likely 
>> >> > be
>> >> > the
>> >> > best answer.
>> >> >
>> >> > Phil
>> >> >
>> >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@> 
>> >> > wrote:
>> >> >>
>> >> >> If you made the leads long enough to lay the SIMMs over on their 
>> >> >> side,
>> >> >> and insulated them so that they wouldn't short anything out, would 
>> >> >> you
>> >> >> have any lead dress problems, such as EMI/RFI, stray capacitance or
>> >> >> inductance, etc.?  And, if so, wonder if installing ferrite beads 
>> >> >> on
>> >> >> the
>> >> >> leads would help.
>> >> >>
>> >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> >> "She said it was either her or the ham radio.  Over."
>> >> >>
>> >> >>
>> >> >> ----- Original Message ----- 
>> >> >> From: Shawnerz
>> >> >> To: rugrid-laptop@yahoogroups.com
>> >> >> Sent: Wednesday, October 17, 2012 12:52 PM
>> >> >> Subject: RE: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >> IIRC, it's 70 mS. The problem I ran in to is the height of the 
>> >> >> SIMM.
>> >> >> Once I soldered the pins on, the module height would not allow the
>> >> >> cover
>> >> >> to go on.
>> >> >> Your results may vary,
>> >> >> -Shawn
>> >> >>
>> >> >>
>> >> >>
>> >> >> -------- Original message --------
>> >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >> >> From: "techtalklive@" <doug@>
>> >> >> To: RuGRiD-Laptop@yahoogroups.com
>> >> >> CC: [RuGRiD-Laptop] Re: Typical 1500 series failure modes?
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >> Well that sounds promising.  The only thing that would
>> >> >> top that would be a native SCSI attached to the bus connectors
>> >> >> in the accessory port.  A ParPort one would do in the meantime.
>> >> >> Thanks!
>> >> >>
>> >> >> I'm thinking of moding some SIMM chips to go in the SIPP sockets.
>> >> >> Anyone know the mem speed?  Hate to take the thing apart right
>> >> >> now to find out.
>> >> >> Thanks!
>> >> >>
>> >> >> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> 
>> >> >> wrote:
>> >> >> >
>> >> >> > The clock frequency of the 1520 CPU is 20 MHz, with the bus 
>> >> >> > clocked
>> >> >> > down to 10 MHz. The clock frequency of the 1530 CPU is 25 MHz, 
>> >> >> > the
>> >> >> > mobo
>> >> >> > clocked down to 12.5 MHz.
>> >> >> >
>> >> >> > The problem with trying to access a higher capacity drive from 
>> >> >> > the
>> >> >> > parallel port is that DOS is not capable of handling a large 
>> >> >> > number
>> >> >> > of
>> >> >> > addresses. Of course, SCSI then is an option in doing that. I 
>> >> >> > have a
>> >> >> > portable SCSI device which hooks into the parallel port made by
>> >> >> > Adaptec, called the Mini-SCSI which will allow the computer to
>> >> >> > connect
>> >> >> > to a larger drive such as a CDROM, large HDD, ZIP drive, or 
>> >> >> > similar
>> >> >> > device by a SCSI-II connection. The SCSI connector has a parallel
>> >> >> > port
>> >> >> > on it that allows you to throughput a connection to your printer. 
>> >> >> > I
>> >> >> > think that the maximum HDD capacity I can use with this thing is 
>> >> >> > 2T.
>> >> >> >
>> >> >> > Phil
>> >> >> >
>> >> >> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> 
>> >> >> > wrote:
>> >> >> > >
>> >> >> > > I used to have all that stuff.  Today I think I can run a dos
>> >> >> > > program
>> >> >> > > on the GRiD that talks to my trusty TotalCommander on another 
>> >> >> > > PC.
>> >> >> > > As I might have mentioned in another post, if I could get
>> >> >> > > another PC to appear as a mounted drive to the GRiD I'd be in
>> >> >> > > real fat city.  Then I'd have the machine wide open to the rest 
>> >> >> > > of
>> >> >> > > the world.
>> >> >> > > Any ideas there?
>> >> >> > >
>> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford" <n8euj@>
>> >> >> > > wrote:
>> >> >> > > >
>> >> >> > > > Good luck with the Backpack stuff.
>> >> >> > > >
>> >> >> > > > There's a book called "Hot Links", which was produced by the
>> >> >> > > > same
>> >> >> > > > people
>> >> >> > > > that produced LapLink.  In the back of the book is a disk 
>> >> >> > > > with
>> >> >> > > > programs that
>> >> >> > > > will let you transfer files, either via null modem cable or
>> >> >> > > > LapLink
>> >> >> > > > cable.
>> >> >> > > > I doubt that the book is still in print, but it might be
>> >> >> > > > something
>> >> >> > > > to look
>> >> >> > > > for.  If you get the book without the disk, let me know, and
>> >> >> > > > I'll
>> >> >> > > > get you
>> >> >> > > > the software.  I can't remember if it lets you map the host
>> >> >> > > > drive
>> >> >> > > > to the
>> >> >> > > > client machine, but that would be cool, if it does that.
>> >> >> > > >
>> >> >> > > > -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> >> > > > "She said it was either her or the ham radio.  Over."
>> >> >> > > >
>> >> >> > > >
>> >> >> > > > ----- Original Message ----- 
>> >> >> > > > From: "techtalklive@" <doug@>
>> >> >> > > > To: <RuGRiD-Laptop@yahoogroups.com>
>> >> >> > > > Sent: Monday, October 15, 2012 10:47 PM
>> >> >> > > > Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure 
>> >> >> > > > modes?
>> >> >> > > >
>> >> >> > > >
>> >> >> > > > > Its a 1530... clock is... I dont know 20Mhz?
>> >> >> > > > > Yes checking out Backpacks now. Just collected drivers from
>> >> >> > > > > around the web for them and am checking on ebay for
>> >> >> > > > > equipment.  I suspect they will work.
>> >> >> > > > >
>> >> >> > > > > I thought I might take a look to see if there was parallel
>> >> >> > > > > port
>> >> >> > > > > software that would work like "laplink" to tether to 
>> >> >> > > > > another
>> >> >> > > > > PC
>> >> >> > > > > but would make a directory/drive on the the host PC appear 
>> >> >> > > > > as
>> >> >> > > > > a
>> >> >> > > > > drive to
>> >> >> > > > > the 1530.
>> >> >> > > > >
>> >> >> > > > > That would be cool... and avoid purchasing old hardware.
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
>> >> >> > > > > <n8euj@>
>> >> >> > > > > wrote:
>> >> >> > > > >>
>> >> >> > > > >> What's the bus clock of the 1520, for example?  If it's
>> >> >> > > > >> 10MHz,
>> >> >> > > > >> it *might*
>> >> >> > > > >> make it, but it would be breathing hard.  As for parallel
>> >> >> > > > >> drives, see if
>> >> >> > > > >> you
>> >> >> > > > >> can find any of the Backpack stuff.  I have a CD-ROM drive
>> >> >> > > > >> that
>> >> >> > > > >> works off
>> >> >> > > > >> the parallel port, but I haven't tried it on the GRiD yet.
>> >> >> > > > >>
>> >> >> > > > >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> >> > > > >> "She said it was either her or the ham radio.  Over."
>> >> >> > > > >>
>> >> >> > > > >>
>> >> >> > > > >> ----- Original Message ----- 
>> >> >> > > > >> From: "techtalklive@" <doug@>
>> >> >> > > > >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> >> > > > >> Sent: Sunday, October 14, 2012 7:48 PM
>> >> >> > > > >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series failure
>> >> >> > > > >> modes?
>> >> >> > > > >>
>> >> >> > > > >>
>> >> >> > > > >> >
>> >> >> > > > >> > Agreed!  The Xircom Parallel port 10bT is available but 
>> >> >> > > > >> > has
>> >> >> > > > >> > limited
>> >> >> > > > >> > driver
>> >> >> > > > >> > support.
>> >> >> > > > >> > Other similar devices don't seem to be on the used 
>> >> >> > > > >> > market
>> >> >> > > > >> > right not.
>> >> >> > > > >> > I'm also considering a parallel based disk drive at this
>> >> >> > > > >> > point.
>> >> >> > > > >> > Yes, ISA itself would have a hard time saturating 10bT I
>> >> >> > > > >> > think... I
>> >> >> > > > >> > didn't
>> >> >> > > > >> > actually run the numbers.
>> >> >> > > > >> > DC
>> >> >> > > > >> >
>> >> >> > > > >> > --- In RuGRiD-Laptop@yahoogroups.com, "Tom Rutherford"
>> >> >> > > > >> > <n8euj@> wrote:
>> >> >> > > > >> >>
>> >> >> > > > >> >> I don't think I'd even bother with the serial port. 
>> >> >> > > > >> >> You
>> >> >> > > > >> >> might get
>> >> >> > > > >> >> 230,400bps out of it if it has one of the fancier 
>> >> >> > > > >> >> UARTs,
>> >> >> > > > >> >> but
>> >> >> > > > >> >> even a
>> >> >> > > > >> >> 16550AFN
>> >> >> > > > >> >> will only give you 115,200bps.  And, if it's an
>> >> >> > > > >> >> 8250A/16450
>> >> >> > > > >> >> UART, you
>> >> >> > > > >> >> have
>> >> >> > > > >> >> to slow it down with CTS/RTS handshaking.  I think the
>> >> >> > > > >> >> standard
>> >> >> > > > >> >> parallel
>> >> >> > > > >> >> port will give you around 5Mbps, won't it?  Maybe a tad
>> >> >> > > > >> >> faster with
>> >> >> > > > >> >> IEEE-1284 or ECP+EPP.  I'd love to get 10/100 rates out 
>> >> >> > > > >> >> of
>> >> >> > > > >> >> a
>> >> >> > > > >> >> GRiD, but
>> >> >> > > > >> >> even
>> >> >> > > > >> >> if you could directly tie in to the ISA bus, it would 
>> >> >> > > > >> >> be
>> >> >> > > > >> >> tough.
>> >> >> > > > >> >>
>> >> >> > > > >> >> -- 73 DE Tom Rutherford, N8EUJ, Burton, MI
>> >> >> > > > >> >> "She said it was either her or the ham radio.  Over."
>> >> >> > > > >> >>
>> >> >> > > > >> >>
>> >> >> > > > >> >> ----- Original Message ----- 
>> >> >> > > > >> >> From: "Androgenoide" <androgenoide@>
>> >> >> > > > >> >> To: <RuGRiD-Laptop@yahoogroups.com>
>> >> >> > > > >> >> Sent: Friday, October 12, 2012 3:37 PM
>> >> >> > > > >> >> Subject: [RuGRiD-Laptop] Re: Typical 1500 series 
>> >> >> > > > >> >> failure
>> >> >> > > > >> >> modes?
>> >> >> > > > >> >>
>> >> >> > > > >> >>
>> >> >> > > > >> >> > The only real obstacle to DOS networking with the 
>> >> >> > > > >> >> > Grid
>> >> >> > > > >> >> > is
>> >> >> > > > >> >> > finding an
>> >> >> > > > >> >> > Ethernet adapter that will work through either the
>> >> >> > > > >> >> > serial
>> >> >> > > > >> >> > or
>> >> >> > > > >> >> > parallel
>> >> >> > > > >> >> > ports.   I used the Xircom on the parallel port 
>> >> >> > > > >> >> > because
>> >> >> > > > >> >> > I
>> >> >> > > > >> >> > had one at
>> >> >> > > > >> >> > the
>> >> >> > > > >> >> > time.   I've got a serial device server now that 
>> >> >> > > > >> >> > would
>> >> >> > > > >> >> > probably work
>> >> >> > > > >> >> > too
>> >> >> > > > >> >> > but I've got too much going on at the moment to dig 
>> >> >> > > > >> >> > out
>> >> >> > > > >> >> > a
>> >> >> > > > >> >> > Grid just
>> >> >> > > > >> >> > to
>> >> >> > > > >> >> > see
>> >> >> > > > >> >> > what would be required.   Either of those solutions
>> >> >> > > > >> >> > would
>> >> >> > > > >> >> > be limited
>> >> >> > > > >> >> > by
>> >> >> > > > >> >> > the speed of the ports(and the Grid itself), of 
>> >> >> > > > >> >> > course.
>> >> >> > > > >> >> > Gigabit
>> >> >> > > > >> >> > speeds
>> >> >> > > > >> >> > are out of the question!
>> >> >> > > > >> >> > Another thought... The guy who put together the 
>> >> >> > > > >> >> > Techworm
>> >> >> > > > >> >> > boot disk
>> >> >> > > > >> >> > also
>> >> >> > > > >> >> > had one called Networm, a single floppy that could do 
>> >> >> > > > >> >> > a
>> >> >> > > > >> >> > dialup
>> >> >> > > > >> >> > internet
>> >> >> > > > >> >> > connection... (if you still have access to a dialup
>> >> >> > > > >> >> > service... if
>> >> >> > > > >> >> > not,
>> >> >> > > > >> >> > Budget Dial Up has a prepaid service that allows you 
>> >> >> > > > >> >> > to
>> >> >> > > > >> >> > buy
>> >> >> > > > >> >> > just a
>> >> >> > > > >> >> > few
>> >> >> > > > >> >> > hours at a time).
>> >> >> > > > >> >> >
>> >> >> > > > >> >> > Generally speaking, if an old machine has either a
>> >> >> > > > >> >> > serial
>> >> >> > > > >> >> > or
>> >> >> > > > >> >> > parallel
>> >> >> > > > >> >> > port
>> >> >> > > > >> >> > and you can get it to boot into DOS, there is always 
>> >> >> > > > >> >> > a
>> >> >> > > > >> >> > way
>> >> >> > > > >> >> > to
>> >> >> > > > >> >> > transfer
>> >> >> > > > >> >> > files to another machine.   Even if it has no floppy 
>> >> >> > > > >> >> > you
>> >> >> > > > >> >> > can use
>> >> >> > > > >> >> > another
>> >> >> > > > >> >> > DOS machine running Laplink.  If it does have a 
>> >> >> > > > >> >> > floppy
>> >> >> > > > >> >> > there are a
>> >> >> > > > >> >> > lot
>> >> >> > > > >> >> > of
>> >> >> > > > >> >> > file transfer programs out there, from Kermit to the
>> >> >> > > > >> >> > original
>> >> >> > > > >> >> > version
>> >> >> > > > >> >> > of
>> >> >> > > > >> >> > Procomm that will fit on a single floppy.
>> >> >> > > > >> >> >
>> >> >> > > > >> >> > The 1530 will run Windows 3.1 just fine with only 1MB 
>> >> >> > > > >> >> > of
>> >> >> > > > >> >> > RAM... a
>> >> >> > > > >> >> > full
>> >> >> > > > >> >> > install takes (IIRC) about 7MB of hdd.  Running Win95
>> >> >> > > > >> >> > would
>> >> >> > > > >> >> > be
>> >> >> > > > >> >> > tricky
>> >> >> > > > >> >> > and
>> >> >> > > > >> >> > would require some hardware tweaks even to make a 
>> >> >> > > > >> >> > slow
>> >> >> > > > >> >> > machine...
>> >> >> > > > >> >> > kind
>> >> >> > > > >> >> > of
>> >> >> > > > >> >> > an extreme project.   I've heard of a Linux distro 
>> >> >> > > > >> >> > that
>> >> >> > > > >> >> > will fit on
>> >> >> > > > >> >> > a
>> >> >> > > > >> >> > single floppy and run on systems with limited 
>> >> >> > > > >> >> > resources
>> >> >> > > > >> >> > (http://www.micheleandreoli.it/mulinux/mulinux.html) 
>> >> >> > > > >> >> > but
>> >> >> > > > >> >> > even that
>> >> >> > > > >> >> > one
>> >> >> > > > >> >> > seems to want 4MB of RAM.
>> >> >> > > > >> >> >
>> >> >> > > > >> >> > There are plenty of people on the web who have too 
>> >> >> > > > >> >> > much
>> >> >> > > > >> >> > time on
>> >> >> > > > >> >> > their
>> >> >> > > > >> >> > hands and are still playing with machines even older
>> >> >> > > > >> >> > than
>> >> >> > > > >> >> > the
>> >> >> > > > >> >> > Grid...
>> >> >> > > > >> >> > You
>> >> >> > > > >> >> > can still buy new after-market accessories for
>> >> >> > > > >> >> > Commodores,
>> >> >> > > > >> >> > for
>> >> >> > > > >> >> > example,
>> >> >> > > > >> >> > so
>> >> >> > > > >> >> > don't assume that there are no new solutions to old
>> >> >> > > > >> >> > problems.
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> > --- In RuGRiD-Laptop@yahoogroups.com, jim s <jws@>
>> >> >> > > > >> >> > wrote:
>> >> >> > > > >> >> >>
>> >> >> > > > >> >> >> On 10/8/2012 7:04 PM, Androgenoide wrote:
>> >> >> > > > >> >> >> >
>> >> >> > > > >> >> >> > I used a Xircom PE3 Ethernet adapter. It converts 
>> >> >> > > > >> >> >> > the
>> >> >> > > > >> >> >> > parallel
>> >> >> > > > >> >> >> > port
>> >> >> > > > >> >> >> > to
>> >> >> > > > >> >> >> > a NIC... although I've been wondering lately if it
>> >> >> > > > >> >> >> > might
>> >> >> > > > >> >> >> > not have
>> >> >> > > > >> >> >> > made
>> >> >> > > > >> >> >> > equally good sense to use a device server on the
>> >> >> > > > >> >> >> > serial
>> >> >> > > > >> >> >> > port...?
>> >> >> > > > >> >> >> > And,
>> >> >> > > > >> >> >> > of course, the Arachne browser... not many choices
>> >> >> > > > >> >> >> > for a
>> >> >> > > > >> >> >> > DOS
>> >> >> > > > >> >> >> > browser
>> >> >> > > > >> >> >> > are there? I used it to check my Yahoo web mail 
>> >> >> > > > >> >> >> > and
>> >> >> > > > >> >> >> > I'll
>> >> >> > > > >> >> >> > have to
>> >> >> > > > >> >> >> > say
>> >> >> > > > >> >> >> > that it gave a whole new dimension of meaning to 
>> >> >> > > > >> >> >> > the
>> >> >> > > > >> >> >> > word "slow."
>> >> >> > > > >> >> >> > Go
>> >> >> > > > >> >> >> > ahead, make a pot of tea while it's loading that
>> >> >> > > > >> >> >> > page,
>> >> >> > > > >> >> >> > it will be
>> >> >> > > > >> >> >> > a
>> >> >> > > > >> >> >> > while.
>> >> >> > > > >> >> >> >
>> >> >> > > > >> >> >> > Sometimes it's fun to do things the hard way. Ran
>> >> >> > > > >> >> >> > into a
>> >> >> > > > >> >> >> > web page
>> >> >> > > > >> >> >> > last
>> >> >> > > > >> >> >> > week of a guy who was competing with a friend to 
>> >> >> > > > >> >> >> > see
>> >> >> > > > >> >> >> > who
>> >> >> > > > >> >> >> > could
>> >> >> > > > >> >> >> > force
>> >> >> > > > >> >> >> > Windows XP to run with the least resources. It 
>> >> >> > > > >> >> >> > won't
>> >> >> > > > >> >> >> > install
>> >> >> > > > >> >> >> > unless
>> >> >> > > > >> >> >> > it
>> >> >> > > > >> >> >> > sees at least 64MB of RAM and a Pentium processor
>> >> >> > > > >> >> >> > but,
>> >> >> > > > >> >> >> > once
>> >> >> > > > >> >> >> > installed
>> >> >> > > > >> >> >> > you can remove RAM and underclock the machine... 
>> >> >> > > > >> >> >> > He
>> >> >> > > > >> >> >> > said
>> >> >> > > > >> >> >> > he got
>> >> >> > > > >> >> >> > one
>> >> >> > > > >> >> >> > machine to run with 20MB of RAM with a 20MHz clock
>> >> >> > > > >> >> >> > and
>> >> >> > > > >> >> >> > it took a
>> >> >> > > > >> >> >> > half
>> >> >> > > > >> >> >> > hour to boot.
>> >> >> > > > >> >> >> >
>> >> >> > > > >> >> >> > I scored an HP 95LX a while back and someday, when 
>> >> >> > > > >> >> >> > I
>> >> >> > > > >> >> >> > have nothing
>> >> >> > > > >> >> >> > else
>> >> >> > > > >> >> >> > to do (Hah!) it might be interesting to see if I 
>> >> >> > > > >> >> >> > can
>> >> >> > > > >> >> >> > get
>> >> >> > > > >> >> >> > online
>> >> >> > > > >> >> >> > with
>> >> >> > > > >> >> >> > a
>> >> >> > > > >> >> >> > half meg of RAM and a 1MHz processor... (maybe 
>> >> >> > > > >> >> >> > that
>> >> >> > > > >> >> >> > Contiki
>> >> >> > > > >> >> >> > OS/browser
>> >> >> > > > >> >> >> > could be ported to a 95LX?)... or maybe not...
>> >> >> > > > >> >> >> >
>> >> >> > > > >> >> >> > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> >> > > > >> >> >> > "techtalklive@"
>> >> >> > > > >> >> >> > <doug@> wrote:
>> >> >> > > > >> >> >> > >
>> >> >> > > > >> >> >> > > Like the hack job? :O
>> >> >> > > > >> >> >> > >
>> >> >> > > > >> >> >> > > Nice grab! So 1520 <> 386-marked screen... 
>> >> >> > > > >> >> >> > > someone
>> >> >> > > > >> >> >> > > swapped
>> >> >> > > > >> >> >> > > screes?
>> >> >> > > > >> >> >> > > Should I take the kbd apart and clean it (will 
>> >> >> > > > >> >> >> > > that
>> >> >> > > > >> >> >> > > likely
>> >> >> > > > >> >> >> > > fix it?) or look for a replacement?
>> >> >> > > > >> >> >> > >
>> >> >> > > > >> >> >> > > So what can I do with this thing if I put more 
>> >> >> > > > >> >> >> > > mem
>> >> >> > > > >> >> >> > > in
>> >> >> > > > >> >> >> > > it?
>> >> >> > > > >> >> >> > > Its all accessed funky through expaned mem 
>> >> >> > > > >> >> >> > > methods,
>> >> >> > > > >> >> >> > > isn't it?
>> >> >> > > > >> >> >> > > I have a coprocessor I could put in this but not
>> >> >> > > > >> >> >> > > sure
>> >> >> > > > >> >> >> > > of
>> >> >> > > > >> >> >> > > the point there.
>> >> >> > > > >> >> >> > >
>> >> >> > > > >> >> >> > > I think I might like to accomplish getting it on
>> >> >> > > > >> >> >> > > the
>> >> >> > > > >> >> >> > > web.
>> >> >> > > > >> >> >> > > I'd need the LAN hardware I guess.
>> >> >> > > > >> >> >> > > Any other ideas?
>> >> >> > > > >> >> >> > >
>> >> >> > > > >> >> >> > > Oh yeah, one other funny thing. The P.S. has two
>> >> >> > > > >> >> >> > > contact on
>> >> >> > > > >> >> >> > > it that mate inside the cavity. But one of the 
>> >> >> > > > >> >> >> > > two
>> >> >> > > > >> >> >> > > spring
>> >> >> > > > >> >> >> > > contacts
>> >> >> > > > >> >> >> > > inside is "rubberized", so only the one contact
>> >> >> > > > >> >> >> > > hits
>> >> >> > > > >> >> >> > > metal to
>> >> >> > > > >> >> >> > > metal.
>> >> >> > > > >> >> >> > > So the P.S. only works using the cord to go from
>> >> >> > > > >> >> >> > > the
>> >> >> > > > >> >> >> > > P.S. into
>> >> >> > > > >> >> >> > > the
>> >> >> > > > >> >> >> > > radial DC jack. Strange?
>> >> >> > > > >> >> >> > >
>> >> >> > > > >> >> >> > > DC
>> >> >> > > > >> >> >> > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> >> >> > > > >> >> >> > "jeriddian"
>> >> >> > > > >> >> >> > <Jeriddian@>
>> >> >> > > > >> >> >> > wrote:
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > > > Great job, Doug!
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > > > Isn't it nice when you manage to salvage one 
>> >> >> > > > >> >> >> > > > of
>> >> >> > > > >> >> >> > > > these
>> >> >> > > > >> >> >> > > > beautiful
>> >> >> > > > >> >> >> > machines? And yep, that's the way it works.
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > > > Once you restore battery power to the 1287A, 
>> >> >> > > > >> >> >> > > > the
>> >> >> > > > >> >> >> > > > CMOS
>> >> >> > > > >> >> >> > > > registers
>> >> >> > > > >> >> >> > are again active. It's just that they're filled 
>> >> >> > > > >> >> >> > with
>> >> >> > > > >> >> >> > nonsense, so
>> >> >> > > > >> >> >> > the
>> >> >> > > > >> >> >> > computer tells you the clock had stopped (which it
>> >> >> > > > >> >> >> > did),
>> >> >> > > > >> >> >> > and
>> >> >> > > > >> >> >> > simply
>> >> >> > > > >> >> >> > prompts you to reset the time. Once you do that 
>> >> >> > > > >> >> >> > and
>> >> >> > > > >> >> >> > reboot,
>> >> >> > > > >> >> >> > everything's hunky-dory.
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > > > You can probably find some more 256K sticks
>> >> >> > > > >> >> >> > > > somewhere and
>> >> >> > > > >> >> >> > > > upgrade
>> >> >> > > > >> >> >> > the RAM to 2MB. Also consider upgrading the OS to
>> >> >> > > > >> >> >> > Ver.
>> >> >> > > > >> >> >> > 6.22.
>> >> >> > > > >> >> >> > Great
>> >> >> > > > >> >> >> > to
>> >> >> > > > >> >> >> > hear the HDD is good too.
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > > > I recently got a great deal. There was a 1520 
>> >> >> > > > >> >> >> > > > on
>> >> >> > > > >> >> >> > > > sale on ebay
>> >> >> > > > >> >> >> > > > that
>> >> >> > > > >> >> >> > I looked at, however it was strange. It was
>> >> >> > > > >> >> >> > definitely
>> >> >> > > > >> >> >> > branded a
>> >> >> > > > >> >> >> > 1520,
>> >> >> > > > >> >> >> > and advertised that way, but the flip up screen 
>> >> >> > > > >> >> >> > said
>> >> >> > > > >> >> >> > it
>> >> >> > > > >> >> >> > was a 386
>> >> >> > > > >> >> >> > machine. I decided to get it, and it was only 
>> >> >> > > > >> >> >> > about
>> >> >> > > > >> >> >> > $90
>> >> >> > > > >> >> >> > with
>> >> >> > > > >> >> >> > shipping.
>> >> >> > > > >> >> >> > When I got the machine, I was very excited when it
>> >> >> > > > >> >> >> > began
>> >> >> > > > >> >> >> > to post,
>> >> >> > > > >> >> >> > because I got a full 8MB of RAM! It of course
>> >> >> > > > >> >> >> > displayed
>> >> >> > > > >> >> >> > the
>> >> >> > > > >> >> >> > configuration error 02 indicating the CMOS battery
>> >> >> > > > >> >> >> > was
>> >> >> > > > >> >> >> > dead. So I
>> >> >> > > > >> >> >> > opened it up. Unfortunately, it was also a DS1287A
>> >> >> > > > >> >> >> > model, but
>> >> >> > > > >> >> >> > that
>> >> >> > > > >> >> >> > was
>> >> >> > > > >> >> >> > no big deal. I decided to replace the DS1287A as I
>> >> >> > > > >> >> >> > had a
>> >> >> > > > >> >> >> > spare.
>> >> >> > > > >> >> >> > Imagine my surprise and joy when I took the 
>> >> >> > > > >> >> >> > keyboard
>> >> >> > > > >> >> >> > off
>> >> >> > > > >> >> >> > to
>> >> >> > > > >> >> >> > discover
>> >> >> > > > >> >> >> > that not only was this really a 386 machine (a 
>> >> >> > > > >> >> >> > 1530),
>> >> >> > > > >> >> >> > but it also
>> >> >> > > > >> >> >> > had
>> >> >> > > > >> >> >> > the math coprocessor 30387 chip as well! I 
>> >> >> > > > >> >> >> > replaced
>> >> >> > > > >> >> >> > the
>> >> >> > > > >> >> >> > 1287A and
>> >> >> > > > >> >> >> > this
>> >> >> > > > >> >> >> > solved the configuration error just fine. But 
>> >> >> > > > >> >> >> > alas, I
>> >> >> > > > >> >> >> > didn't get
>> >> >> > > > >> >> >> > a
>> >> >> > > > >> >> >> > triple crown winner here. The Conner drive was
>> >> >> > > > >> >> >> > definitely dead.
>> >> >> > > > >> >> >> > But
>> >> >> > > > >> >> >> > heck, getting another HDD is easy compared to the
>> >> >> > > > >> >> >> > other
>> >> >> > > > >> >> >> > benefits!
>> >> >> > > > >> >> >> > The
>> >> >> > > > >> >> >> > original owner of this machine definitely took 
>> >> >> > > > >> >> >> > care
>> >> >> > > > >> >> >> > of
>> >> >> > > > >> >> >> > it.
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > > > Phil
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> >> > > > >> >> >> > wrote:
>> >> >> > > > >> >> >> > > > >
>> >> >> > > > >> >> >> > > > > It runs! Hard Disk is GOOD.
>> >> >> > > > >> >> >> > > > > I did a DS1287 hack to the machine today and
>> >> >> > > > >> >> >> > > > > ran
>> >> >> > > > >> >> >> > > > > the wires
>> >> >> > > > >> >> >> > > > > to
>> >> >> > > > >> >> >> > > > > a
>> >> >> > > > >> >> >> > convenient place for the battery. Upon power up it
>> >> >> > > > >> >> >> > said
>> >> >> > > > >> >> >> > > > > that the RTC was stopped, and it needed
>> >> >> > > > >> >> >> > > > > setting.
>> >> >> > > > >> >> >> > > > > The "stopped" message threw me, I thought
>> >> >> > > > >> >> >> > > > > something was
>> >> >> > > > >> >> >> > > > > wrong
>> >> >> > > > >> >> >> > > > > with
>> >> >> > > > >> >> >> > > > > the chip. It took an F1 to continue and went
>> >> >> > > > >> >> >> > > > > right
>> >> >> > > > >> >> >> > > > > through
>> >> >> > > > >> >> >> > > > > POST
>> >> >> > > > >> >> >> > and Autoexec.
>> >> >> > > > >> >> >> > > > > Using TIME and DATE in the GRIDUTIL 
>> >> >> > > > >> >> >> > > > > directory
>> >> >> > > > >> >> >> > > > > set
>> >> >> > > > >> >> >> > > > > the RTC.
>> >> >> > > > >> >> >> > > > > Now it boots cleanly.
>> >> >> > > > >> >> >> > > > > Has Lotus123 on the HD.
>> >> >> > > > >> >> >> > > > > I posted updated pics in "Dougs 1530 
>> >> >> > > > >> >> >> > > > > stuff"...
>> >> >> > > > >> >> >> > > > > page 2!
>> >> >> > > > >> >> >> > > > > The only remaining issue is that a few keys 
>> >> >> > > > >> >> >> > > > > on
>> >> >> > > > >> >> >> > > > > the
>> >> >> > > > >> >> >> > > > > keyboard
>> >> >> > > > >> >> >> > > > > don't work. 123Q and spacebar. From an 
>> >> >> > > > >> >> >> > > > > external
>> >> >> > > > >> >> >> > > > > kbd
>> >> >> > > > >> >> >> > > > > everything
>> >> >> > > > >> >> >> > > > > works.
>> >> >> > > > >> >> >> > > > > Wow. I have am the proud owner of a DOS 4.01
>> >> >> > > > >> >> >> > > > > 386
>> >> >> > > > >> >> >> > > > > with 1MB
>> >> >> > > > >> >> >> > > > > RAM,
>> >> >> > > > >> >> >> > > > > a
>> >> >> > > > >> >> >> > half full 10MB hard disk and 3.5" floppy. Some
>> >> >> > > > >> >> >> > smokin'
>> >> >> > > > >> >> >> > system!
>> >> >> > > > >> >> >> > > > >
>> >> >> > > > >> >> >> > > > >
>> >> >> > > > >> >> >> > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> >> > > > >> >> >> > wrote:
>> >> >> > > > >> >> >> > > > > >
>> >> >> > > > >> >> >> > > > > > Thanks so much that was great info. I had 
>> >> >> > > > >> >> >> > > > > > no
>> >> >> > > > >> >> >> > > > > > idea on the
>> >> >> > > > >> >> >> > > > > > X2
>> >> >> > > > >> >> >> > > > > > being a rating. May have to try it without
>> >> >> > > > >> >> >> > > > > > them
>> >> >> > > > >> >> >> > > > > > just to
>> >> >> > > > >> >> >> > > > > > make sure the rest of it is still good.
>> >> >> > > > >> >> >> > > > > >
>> >> >> > > > >> >> >> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> >> > > > >> >> >> > "fullsizewagon"
>> >> >> > > > >> >> >> > <andrebakken@> wrote:
>> >> >> > > > >> >> >> > > > > > >
>> >> >> > > > >> >> >> > > > > > > Notice that's 250V AC, not DC, which 
>> >> >> > > > >> >> >> > > > > > > makes
>> >> >> > > > >> >> >> > > > > > > a
>> >> >> > > > >> >> >> > > > > > > big
>> >> >> > > > >> >> >> > > > > > > difference.
>> >> >> > > > >> >> >> > The X2 also signifies they're an enhanced type 
>> >> >> > > > >> >> >> > meant
>> >> >> > > > >> >> >> > to
>> >> >> > > > >> >> >> > go
>> >> >> > > > >> >> >> > directly
>> >> >> > > > >> >> >> > across the mains. Be sure to get X2 rated
>> >> >> > > > >> >> >> > replacements.
>> >> >> > > > >> >> >> > > > > > > The PSU will work without those cap's in
>> >> >> > > > >> >> >> > > > > > > place, but
>> >> >> > > > >> >> >> > > > > > > will
>> >> >> > > > >> >> >> > radiate more interference/noise out onto the 
>> >> >> > > > >> >> >> > mains.
>> >> >> > > > >> >> >> > > > > > >
>> >> >> > > > >> >> >> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> >> > > > >> >> >> > wrote:
>> >> >> > > > >> >> >> > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > There are two in there that are the 
>> >> >> > > > >> >> >> > > > > > > > same.
>> >> >> > > > >> >> >> > > > > > > > .15uF 250V I think I can replace them.
>> >> >> > > > >> >> >> > > > > > > > Polyprop I think. Radial type in a 
>> >> >> > > > >> >> >> > > > > > > > square
>> >> >> > > > >> >> >> > > > > > > > package.
>> >> >> > > > >> >> >> > > > > > > > The bottom is clear so you can see the
>> >> >> > > > >> >> >> > > > > > > > radial shape.
>> >> >> > > > >> >> >> > > > > > > > I have them out already.
>> >> >> > > > >> >> >> > > > > > > > Thanks for the tip on the 1287A
>> >> >> > > > >> >> >> > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > DC
>> >> >> > > > >> >> >> > > > > ; > >
>> >> >> > > > >> >> >> > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, 
>> >> >> > > > >> >> >> > "jeriddian"
>> >> >> > > > >> >> >> > <Jeriddian@>
>> >> >> > > > >> >> >> > wrote:
>> >> >> > > > >> >> >> > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > Good Find, DC
>> >> >> > > > >> >> >> > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > I guess they got burnt to the point
>> >> >> > > > >> >> >> > > > > > > > > where
>> >> >> > > > >> >> >> > > > > > > > > you can't
>> >> >> > > > >> >> >> > identify the capcity amount. Could you give me the
>> >> >> > > > >> >> >> > output voltage
>> >> >> > > > >> >> >> > and
>> >> >> > > > >> >> >> > amperage? I'll look through my units and see if I 
>> >> >> > > > >> >> >> > can
>> >> >> > > > >> >> >> > identify
>> >> >> > > > >> >> >> > them
>> >> >> > > > >> >> >> > for you.
>> >> >> > > > >> >> >> > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > Phil
>> >> >> > > > >> >> >> > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> >> > > > >> >> >> > wrote:
>> >> >> > > > >> >> >> > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > > I posted pictures of what looks 
>> >> >> > > > >> >> >> > > > > > > > > > like
>> >> >> > > > >> >> >> > > > > > > > > > a
>> >> >> > > > >> >> >> > > > > > > > > > failed cap
>> >> >> > > > >> >> >> > > > > > > > > > in
>> >> >> > > > >> >> >> > the ext p.s. unit. A stinky melt down!
>> >> >> > > > >> >> >> > > > > > > > > > I'm supposing I can replace these.
>> >> >> > > > >> >> >> > > > > > > > > > Any identification tips welcome,
>> >> >> > > > >> >> >> > > > > > > > > > thanks.
>> >> >> > > > >> >> >> > > > > > > > > > There appears to be two of the 
>> >> >> > > > >> >> >> > > > > > > > > > same
>> >> >> > > > >> >> >> > > > > > > > > > caps, would
>> >> >> > > > >> >> >> > replace both
>> >> >> > > > >> >> >> > > > > > > > > > of course.
>> >> >> > > > >> >> >> > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > > DC
>> >> >> > > > >> >> >> > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > > --- In 
>> >> >> > > > >> >> >> > > > > > > > > > RuGRiD-Laptop@yahoogroups.com
>> >> >> > > > >> >> >> > <mailto:RuGRiD-Laptop%40yahoogroups.com>,
>> >> >> > > > >> >> >> > "techtalklive@" <doug@>
>> >> >> > > > >> >> >> > wrote:
>> >> >> > > > >> >> >> > > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > > > I am considering tackling the
>> >> >> > > > >> >> >> > > > > > > > > > > repair
>> >> >> > > > >> >> >> > > > > > > > > > > of a 1530
>> >> >> > > > >> >> >> > > > > > > > > > > that
>> >> >> > > > >> >> >> > > > > > > > > > > does not respond to the power
>> >> >> > > > >> >> >> > > > > > > > > > > switch.
>> >> >> > > > >> >> >> > > > > > > > > > > The power
>> >> >> > > > >> >> >> > > > > > > > > > > supply
>> >> >> > > > >> >> >> > > > > > > > > > > module measures 16.35v so I 
>> >> >> > > > >> >> >> > > > > > > > > > > think
>> >> >> > > > >> >> >> > > > > > > > > > > its
>> >> >> > > > >> >> >> > > > > > > > > > > fine
>> >> >> > > > >> >> >> > (unfortunately,
>> >> >> > > > >> >> >> > > > > > > > > > > that would have been an easy
>> >> >> > > > >> >> >> > > > > > > > > > > problem
>> >> >> > > > >> >> >> > > > > > > > > > > isolation!)
>> >> >> > > > >> >> >> > > > > > > > > > > So its something internal. I 
>> >> >> > > > >> >> >> > > > > > > > > > > have
>> >> >> > > > >> >> >> > > > > > > > > > > the
>> >> >> > > > >> >> >> > > > > > > > > > > service
>> >> >> > > > >> >> >> > > > > > > > > > > manuals
>> >> >> > > > >> >> >> > > > > > > > > > > downloaded but I thought maybe 
>> >> >> > > > >> >> >> > > > > > > > > > > I'd
>> >> >> > > > >> >> >> > > > > > > > > > > get
>> >> >> > > > >> >> >> > > > > > > > > > > some
>> >> >> > > > >> >> >> > > > > > > > > > > pointers
>> >> >> > > > >> >> >> > form
>> >> >> > > > >> >> >> > > > > > > > > > > folks who have already performed
>> >> >> > > > >> >> >> > > > > > > > > > > cold
>> >> >> > > > >> >> >> > > > > > > > > > > stone
>> >> >> > > > >> >> >> > > > > > > > > > > dead
>> >> >> > > > >> >> >> > diagnosis.
>> >> >> > > > >> >> >> > > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > > > If I don't dive into this FYI 
>> >> >> > > > >> >> >> > > > > > > > > > > this
>> >> >> > > > >> >> >> > > > > > > > > > > very clean
>> >> >> > > > >> >> >> > > > > > > > > > > 1530
>> >> >> > > > >> >> >> > > > > > > > > > > will
>> >> >> > > > >> >> >> > > > > > > > > > > be available for parts/repair!
>> >> >> > > > >> >> >> > > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > > > Thanks in advance,
>> >> >> > > > >> >> >> > > > > > > > > > > DC
>> >> >> > > > >> >> >> > > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > > >
>> >> >> > > > >> >> >> > > > > > > >
>> >> >> > > > >> >> >> > > > > > >
>> >> >> > > > >> >> >> > > > > >
>> >> >> > > > >> >> >> > > > >
>> >> >> > > > >> >> >> > > >
>> >> >> > > > >> >> >> > >
>> >> >> > > > >> >> >> >
>> >> >> > > > >> >> >>
>> >> >> > > > >> >> >> Since we are on the topic of TCP does anyone have a
>> >> >> > > > >> >> >> formula stashed
>> >> >> > > > >> >> >> that
>> >> >> > > > >> >> >> can be easily had to run say serial (probably ppp) 
>> >> >> > > > >> >> >> from
>> >> >> > > > >> >> >> something
>> >> >> > > > >> >> >> like
>> >> >> > > > >> >> >> a
>> >> >> > > > >> >> >> small system like the raspberry pi serially to a 
>> >> >> > > > >> >> >> system
>> >> >> > > > >> >> >> with dos
>> >> >> > > > >> >> >> and a
>> >> >> > > > >> >> >> stack?  It's been so long since I messed with dos
>> >> >> > > > >> >> >> environment
>> >> >> > > > >> >> >> networking
>> >> >> > > > >> >> >> I forget.
>> >> >> > > > >> >> >>
>> >> >> > > > >> >> >> I think windows of some sort had trumpet to handle 
>> >> >> > > > >> >> >> part
>> >> >> > > > >> >> >> of
>> >> >> > > > >> >> >> the
>> >> >> > > > >> >> >> equation,
>> >> >> > > > >> >> >> but I don' t have any references right now over a 
>> >> >> > > > >> >> >> dos
>> >> >> > > > >> >> >> stack.
>> >> >> > > > >> >> >>
>> >> >> > > > >> >> >> Probably something to do windows 3.1 or win95 / 
>> >> >> > > > >> >> >> win98
>> >> >> > > > >> >> >> would be
>> >> >> > > > >> >> >> better,
>> >> >> > > > >> >> >> but I don't know if the hardware here would be up to
>> >> >> > > > >> >> >> those
>> >> >> > > > >> >> >> os's.
>> >> >> > > > >> >> >>
>> >> >> > > > >> >> >> Of course a 1.2mb or 1.44 mb live floppy boot would 
>> >> >> > > > >> >> >> be
>> >> >> > > > >> >> >> nice too.
>> >> >> > > > >> >> >> I'm
>> >> >> > > > >> >> >> asking for everything here.  Objective is to have
>> >> >> > > > >> >> >> something that
>> >> >> > > > >> >> >> could
>> >> >> > > > >> >> >> suck off or load a disk image with a floppy boot.  I
>> >> >> > > > >> >> >> suspect it was
>> >> >> > > > >> >> >> a
>> >> >> > > > >> >> >> difficult thing to get going in the day, though, and
>> >> >> > > > >> >> >> even
>> >> >> > > > >> >> >> wors now.
>> >> >> > > > >> >> >>
>> >> >> > > > >> >> >> jim
>> >> >> > > > >> >> >> >
>> >> >> > > > >> >> >> > ,___
>> >> >> > > > >> >> >> >
>> >> >> > > > >> >> >>
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> > ------------------------------------
>> >> >> > > > >> >> >
>> >> >> > > > >> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo!
>> >> >> > > > >> >> > Groups
>> >> >> > > > >> >> > Links
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >> >
>> >> >> > > > >> >>
>> >> >> > > > >> >
>> >> >> > > > >> >
>> >> >> > > > >> >
>> >> >> > > > >> >
>> >> >> > > > >> > ------------------------------------
>> >> >> > > > >> >
>> >> >> > gt; > >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! 
>> >> >> > Groups
>> >> >> > Links
>> >> >> > > > >> >
>> >> >> > > > >> >
>> >> >> > > > >> >
>> >> >> > > > >>
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > > ------------------------------------
>> >> >> > > > >
>> >> >> > > > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups
>> >> >> > > > > Links
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > >
>> >> >> > >
>> >> >> >
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >> ------------------------------------
>> >> >>
>> >> >> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > ------------------------------------
>> >> >
>> >> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2615
Date: Tue, 23 Oct 2012 04:01:38 -0000
From: "techtalklive@..."
Subject: 1530 AC/DC Power

In interest of preserving my GRiD power pack I did a substition,
for now.  Here's how it went:

The GRiD pack is marked on the AC Side
100-200V ~50/60/400Hz 80W
and on the DC Side:
60 Watt Power Suppy
Input: 100-200VAC 50/60Hz 1.5A
Output 16.25VDC 3.7A
Used in GRiDCase 12xx,13xx,15xx GRiDLite 10xx and 3402 Drive
GRiD PN 105572-00
MicroEnergy PN 10-0100

The measured the draw of my 1530 running by itself is, in practice
.47A, 27W, @110V using a KillAWatt meter.

I had an old 16V TARGA univeral laptop pack, the old thin job,
sitting around in a junk box.  The DC jack fit the GRiD :)
It is marked 16V 1A@110V, which seems to be a good 2x margin
over the running drawl of the GRiD as it sits.
Maybe this will get closer if I get the 1MB RAM upgrade to 8MB :O
The targa runs moderately warm, less hot than the GRiD pack,
so I think all is OK.

Pictures are posted in Dougs 1530 stuff.

Yahoo! Message number: 2616
Date: Tue, 23 Oct 2012 07:02:45 -0000
From: "Paolo Binotti"
Subject: Military GridCase 1590

I'm uploading same images af my GridCase 1590.... military Laptop with a strange keyboard...

Any idea about its use ?

Thanks for Your cooperation
Paolo

Yahoo! Message number: 2617
Date: Sat, 27 Oct 2012 00:45:02 -0000
From: "techtalklive@..."
Subject: Scored something...

http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

Looks like Honeywell released a specially configured GRiD for
their purposes.

Should I keep it together or use it for parts?

There is very little I can find on the web about it.

Yahoo! Message number: 2618
Date: Sat, 27 Oct 2012 03:10:34 -0000
From: "jeriddian"
Subject: Re: Scored something...

I have one of these. I bought it a few years ago off Ebay.

These are standard GRiD 1520 machines, 1MB RAM, with two floppy drives. They have no Hard Disk at all. The only thing different about them is that they have Honeywell software put on them for a very specific purpose, which as best as I can remember is data tranfer to and from other systems. If I remember correctly also, the one I have had a Tadiran battery for the CMOS instead of a Dallas RTC chip. Much easier to replace.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
>
> Looks like Honeywell released a specially configured GRiD for
> their purposes.
>
> Should I keep it together or use it for parts?
>
> There is very little I can find on the web about it.
>

Yahoo! Message number: 2619
Date: Sat, 27 Oct 2012 21:56:53 -0000
From: "Shawnerz"
Subject: Re: Scored something...

Phil,
Yup, looks like a 1520.
You said they had Honeywell software.  Was that on floppy, a special ROM, or was there a special BIOS build for Honeywell?
Thanks,
-Shawn

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> I have one of these. I bought it a few years ago off Ebay.
>
> These are standard GRiD 1520 machines, 1MB RAM, with two floppy drives. They have no Hard Disk at all. The only thing different about them is that they have Honeywell software put on them for a very specific purpose, which as best as I can remember is data tranfer to and from other systems. If I remember correctly also, the one I have had a Tadiran battery for the CMOS instead of a Dallas RTC chip. Much easier to replace.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
> >
> > Looks like Honeywell released a specially configured GRiD for
> > their purposes.
> >
> > Should I keep it together or use it for parts?
> >
> > There is very little I can find on the web about it.
> >
>

Yahoo! Message number: 2620
Date: Sun, 28 Oct 2012 01:26:35 -0000
From: "jeriddian"
Subject: Re: Scored something...

Shawn,

As I recall, there was a EPROM on board for that purpose. The computer would automatically launch into the Honeywell program and give an option either to start operating it, or exit out to DOS.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Shawnerz" <shawnerz@...> wrote:
>
> Phil,
> Yup, looks like a 1520.
> You said they had Honeywell software.  Was that on floppy, a special ROM, or was there a special BIOS build for Honeywell?
> Thanks,
> -Shawn
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > I have one of these. I bought it a few years ago off Ebay.
> >
> > These are standard GRiD 1520 machines, 1MB RAM, with two floppy drives. They have no Hard Disk at all. The only thing different about them is that they have Honeywell software put on them for a very specific purpose, which as best as I can remember is data tranfer to and from other systems. If I remember correctly also, the one I have had a Tadiran battery for the CMOS instead of a Dallas RTC chip. Much easier to replace.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
> > >
> > > Looks like Honeywell released a specially configured GRiD for
> > > their purposes.
> > >
> > > Should I keep it together or use it for parts?
> > >
> > > There is very little I can find on the web about it.
> > >
> >
>

Yahoo! Message number: 2621
Date: Sun, 28 Oct 2012 07:10:09 -0000
From: "Douglas"
Subject: Re: Scored something...

Does that suggest the eprom can be changed to a std grid?
Or something else using the grid eprom utilities?

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Shawn,
>
> As I recall, there was a EPROM on board for that purpose. The computer would automatically launch into the Honeywell program and give an option either to start operating it, or exit out to DOS.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Shawnerz" <shawnerz@> wrote:
> >
> > Phil,
> > Yup, looks like a 1520.
> > You said they had Honeywell software.  Was that on floppy, a special ROM, or was there a special BIOS build for Honeywell?
> > Thanks,
> > -Shawn
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > I have one of these. I bought it a few years ago off Ebay.
> > >
> > > These are standard GRiD 1520 machines, 1MB RAM, with two floppy drives. They have no Hard Disk at all. The only thing different about them is that they have Honeywell software put on them for a very specific purpose, which as best as I can remember is data tranfer to and from other systems. If I remember correctly also, the one I have had a Tadiran battery for the CMOS instead of a Dallas RTC chip. Much easier to replace.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > >
> > > > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
> > > >
> > > > Looks like Honeywell released a specially configured GRiD for
> > > > their purposes.
> > > > 
> > > > Should I keep it together or use it for parts?
> > > >
> > > > There is very little I can find on the web about it.
> > > >
> > >
> >
>

Yahoo! Message number: 2622
Date: Mon, 29 Oct 2012 03:21:46 -0000
From: "jeriddian"
Subject: Re: Scored something...

Yes, You can put in a regular EPROM programmed with DOS or whatever you want.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Douglas" <memphis@...> wrote:
>
> Does that suggest the eprom can be changed to a std grid?
> Or something else using the grid eprom utilities?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Shawn,
> >
> > As I recall, there was a EPROM on board for that purpose. The computer would automatically launch into the Honeywell program and give an option either to start operating it, or exit out to DOS.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Shawnerz" <shawnerz@> wrote:
> > >
> > > Phil,
> > > Yup, looks like a 1520.
> > > You said they had Honeywell software.  Was that on floppy, a special ROM, or was there a special BIOS build for Honeywell?
> > > Thanks,
> > > -Shawn
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > I have one of these. I bought it a few years ago off Ebay.
> > > >
> > > > These are standard GRiD 1520 machines, 1MB RAM, with two floppy drives. They have no Hard Disk at all. The only thing different about them is that they have Honeywell software put on them for a very specific purpose, which as best as I can remember is data tranfer to and from other systems. If I remember correctly also, the one I have had a Tadiran battery for the CMOS instead of a Dallas RTC chip. Much easier to replace.
> > > >
> > > > Phil
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
> > > > >
> > > > > Looks like Honeywell released a specially configured GRiD for
> > > > > their purposes.
> > > > >
> > > > > Should I keep it together or use it for parts?
> > > > >
> > > > > There is very little I can find on the web about it.
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2623
Date: Mon, 29 Oct 2012 03:55:01 -0000
From: "Douglas"
Subject: Re: Scored something...

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Yes, You can put in a regular EPROM programmed with DOS or whatever you want.
>
> Phil

Well that seems like a worthy project!
I'm going to have to think about that.

Chime in if you have put anything interesting into your GRiD
ROMs!

Hmmmmm!

Yahoo! Message number: 2624
Date: Mon, 29 Oct 2012 15:22:47 -0000
From: "jeriddian"
Subject: Re: Scored something...

Sure, most ROM chips I've seen put in there usually contain an operating system, usually DOS of some version, But there have been some chips that will have other programs like Lotus 1-2-3, Wordperfect 5.1 or 6.1, Microsoft word, early version, Excel, etc. You can actually program your own EPROMS with whatever software you want to put on it. I'm not quite sure how to do that myself, to be honest, but it can be be done. Your only limit is the 128k limit of the space on the ROM chip.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Douglas" <memphis@...> wrote:
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Yes, You can put in a regular EPROM programmed with DOS or whatever you want.
> >
> > Phil
>
> Well that seems like a worthy project!
> I'm going to have to think about that.
>
> Chime in if you have put anything interesting into your GRiD
> ROMs!
>
> Hmmmmm!
>

Yahoo! Message number: 2625
Date: Mon, 29 Oct 2012 15:52:50 -0000
From: "Douglas"
Subject: Re: Scored something...
text/plain; charset="iso-8859-1"

A Honeywell Loader PC Manual!
<https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&cad=rja&#92;
&ved=0CDYQFjAE&url=https%3A%2F%2Fwww.honeywellprocess.com%2Flibrary%2Fma&#92;
rketing%2Ftech-specs%2FLO-03-01.pdf&ei=QKWOUM66Cab00gGei4GYDQ&>

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...>
wrote:
>
>
http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
984.m1497.l2649
>
> Looks like Honeywell released a specially configured GRiD for
> their purposes.
>
> Should I keep it together or use it for parts?
>
> There is very little I can find on the web about it.
>

Yahoo! Message number: 2626
Date: Mon, 29 Oct 2012 10:29:24 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=iso-8859-1

Doug,
Did I miss something?� It appears to link to the analog displays for a tempature controller.
-SHawn


________________________________
 From: Douglas <memphis@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Monday, October 29, 2012 11:52 AM
Subject: [RuGRiD-Laptop] Re: Scored something...





A Honeywell Loader PC Manual!�

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
>
> Looks like Honeywell released a specially configured GRiD for
> their purposes.
>
> Should I keep it together or use it for parts?
>
> There is very little I can find on the web about it.
>

Yahoo! Message number: 2627
Date: Mon, 29 Oct 2012 18:19:36 -0000
From: "techtalklive@..."
Subject: Re: Scored something...
text/plain; charset="iso-8859-1"

ARGH.  Too much going on.
One more time...

Honeywell Loader Terminal Manual
<http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>

Also posted in the files under a folder of similar name.


--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> Doug,
> Did I miss something?  It appears to link to the analog displays for a
tempature controller.
> -SHawn
>
>
> ________________________________
>  From: Douglas memphis@...
> To: RuGRiD-Laptop@yahoogroups.com
> Sent: Monday, October 29, 2012 11:52 AM
> Subject: [RuGRiD-Laptop] Re: Scored something...
>
>
>
>
>
> A Honeywell Loader PC Manual!
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
> >
> >
http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
984.m1497.l2649
> >
> > Looks like Honeywell released a specially configured GRiD for
> > their purposes.
> >
> > Should I keep it together or use it for parts?
> >
> > There is very little I can find on the web about it.
> >
>

Yahoo! Message number: 2628
Date: Mon, 29 Oct 2012 14:45:35 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=iso-8859-1

Wow.� That's a big file.� But I downloaded it and will look it over later.
Looks interesting.� Thanks for the link.
-Shawn
��

________________________________
 From: "techtalklive@..." <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Monday, October 29, 2012 2:19 PM
Subject: [RuGRiD-Laptop] Re: Scored something...





ARGH.� Too much going on.
One more time...

Honeywell Loader Terminal Manual

Also posted in the files under a folder of similar name.


--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> Doug,
> Did I miss something?� It appears to link to the analog displays for a tempature controller.
> -SHawn
>
>
> ________________________________
>  From: Douglas memphis@...
> To: RuGRiD-Laptop@yahoogroups.com
> Sent: Monday, October 29, 2012 11:52 AM
> Subject: [RuGRiD-Laptop] Re: Scored something...
>
>
>
>
>
> A Honeywell Loader PC Manual!�
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
> >
> > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
> >
> > Looks like Honeywell released a specially configured GRiD for
> > their purposes.
> >
> > Should I keep it together or use it for parts?
> >
> > There is very little I can find on the web about it.
> >
>

Yahoo! Message number: 2629
Date: Mon, 29 Oct 2012 23:45:43 -0000
From: "jadersch"
Subject: Spare Gridcase 3+ system boards?

Hi all --

I'm new to the list and I have a small collection of GRiD systems (A Compass II, a Convertible 486 (2270) and a GridCase 3+).

The last of these I acquired recently and it's suffered some major damage to the system board due to an exploding RTC battery.  It's questionable whether it's possible to repair the damage, and before I start along that path I thought I'd ask whether anyone here has any boards going spare.

Thanks!
Josh

Yahoo! Message number: 2630
Date: Mon, 29 Oct 2012 17:02:38 -0700 (PDT)
From: Lawrence Walker
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=utf-8

>________________________________
>  I'd bet that it used the IEEE488 Grid serial adaptor which fit in the adaptor slot to interface with the many temperature, etc. analogue devices more available in that format than those to the standard serial port connection. (which was used by Tramiel in the Pet for the same reason)
>
>Lawrence
>
>From: "techtalklive@ymail.com" <doug@...>
>To: RuGRiD-Laptop@yahoogroups.com
>Sent: Monday, October 29, 2012 1:19:36 PM
>Subject: [RuGRiD-Laptop] Re: Scored something...
>
>
> 
>ARGH.  Too much going on.
>One more time...
>
>Honeywell Loader Terminal Manual
>
>Also posted in the files under a folder of similar name.
>
>
>--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>>
>> Doug,
>> Did I miss something?  It appears to link to the analog displays for a tempature controller.
>> -SHawn
>>
>>
>> ________________________________
>>  From: Douglas memphis@...
>> To: RuGRiD-Laptop@yahoogroups.com
>> Sent: Monday, October 29, 2012 11:52 AM
>> Subject: [RuGRiD-Laptop] Re: Scored something...
>>
>>
>>
>>
>>
>> A Honeywell Loader PC Manual! 
>>
>> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
>> >
>> > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
>> >
>> > Looks like Honeywell released a specially configured GRiD for
>> > their purposes.
>> >
>> > Should I keep it together or use it for parts?
>> >
>> > There is very little I can find on the web about it.
>> >
>>
>
>
>
>

Yahoo! Message number: 2631
Date: Tue, 30 Oct 2012 03:52:29 -0000
From: "jeriddian"
Subject: Re: Scored something...

Whoa!

That is some file! But I started looking through it and I am really confused now. On page 15 it says the computer must be compatible with WIndows 2000 or XP. I think they're talking about another computer, not a GRiD. There's no way a Grid 1520 could handle those OS's. There was a drawing of the back of a GRiD like looking computer later on, but it featured TWO serial ports. No GRiD I know did that. I do remember the one that I got, and it was just a simple 1520 with extra programming on it. It doesn't seem this manual is for that computer.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> ARGH.  Too much going on.
> One more time...
>
> Honeywell Loader Terminal Manual
> <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
>
> Also posted in the files under a folder of similar name.
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> >
> > Doug,
> > Did I miss something?  It appears to link to the analog displays for a
> tempature controller.
> > -SHawn
> >
> >
> > ________________________________
> >  From: Douglas memphis@
> > To: RuGRiD-Laptop@yahoogroups.com
> > Sent: Monday, October 29, 2012 11:52 AM
> > Subject: [RuGRiD-Laptop] Re: Scored something...
> >
> >
> >
> >
> >
> > A Honeywell Loader PC Manual!
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
> > >
> > >
> http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> 984.m1497.l2649
> > >
> > > Looks like Honeywell released a specially configured GRiD for
> > > their purposes.
> > >
> > > Should I keep it together or use it for parts?
> > >
> > > There is very little I can find on the web about it.
> > >
> >
>

Yahoo! Message number: 2632
Date: Tue, 30 Oct 2012 03:57:09 -0000
From: "jeriddian"
Subject: Re: Spare Gridcase 3+ system boards?

Hi Josh,

Welcome to the group. :-) I'm Phil, also know as Jeriddian. There aren't hardly of us here that dealt with the earlier Grid 3's or Grid 2's. I think maybe one or two of us may have one. I don't. This group has concentrated mostly on the 1500 series computers. Unfortunately, your best bet is going to be ebay, if you're lucky. I hate to say it, but you probably would have to get another working unit and use your present unit as a parts surplus if you can not repair it. I wish you the best of luck.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "jadersch" <derschjo@...> wrote:
>
> Hi all --
>
> I'm new to the list and I have a small collection of GRiD systems (A Compass II, a Convertible 486 (2270) and a GridCase 3+).
>
> The last of these I acquired recently and it's suffered some major damage to the system board due to an exploding RTC battery.  It's questionable whether it's possible to repair the damage, and before I start along that path I thought I'd ask whether anyone here has any boards going spare.
>
> Thanks!
> Josh
>

Yahoo! Message number: 2633
Date: Tue, 30 Oct 2012 07:37:59 -0700
From: jim s
Subject: Re: [RuGRiD-Laptop] Re: Scored something...

On 10/29/2012 8:52 PM, jeriddian wrote:
>   There was a drawing of the back of a GRiD like looking computer later on, but it featured TWO serial ports. No GRiD I know did that. I do remember the one that I got, and it was just a simple 1520 with extra programming on it. It doesn't seem this manual is for that computer.
The manual appears to be for a program to load Honeywell PLC's which can 
be added to any windows pc.  The main hardware appears to be a dongle 
which attaches to one of the RS232 ports of any Win computer and another 
port for power to convert the RS232 to RS485.  It is worded so that the 
dongle and the software is generic for any windows computer.

On page 56 of 714 there is a drawing which appears to be the back of the 
grid that Phil refers to (at least it has the 2 serial ports he has not 
seen).  The thing that makes me still think grid is that the artist 
seems to have gone out of their way to show the odd power pod 
arrangement Grid used with the diagonal cutout on the upper left of the 
power supply.

This would be representative of the PLC

http://www.ebay.com/itm/280821483506

this appears to be a pointer to the user manual for such PLC-620

http://downloads.applied-automation.com/sam/honeywell/620/manuals/6208984.pdf

There is a picture of the entire family, probably including a 
programming computer on page 7 of that manual.

Interesting stuff.

Jim

Yahoo! Message number: 2634
Date: Tue, 30 Oct 2012 11:43:02 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset="UTF-8"

Isn't IEEE-488 parallel?  That's what the hard drives, floppy drives, and other things used on the PET and CBM models that Commodore came out with in the early '80s.  Also used on the VIC-20 and C-64 with a Buscard-II plugged into the User Port.  Had to have a heavier power supply than the stock supply that came with the 'puter, because the Buscard-II interface board pulled a lot of power.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message -----
From: Lawrence Walker
To: RuGRiD-Laptop@yahoogroups.com
Sent: Monday, October 29, 2012 8:02 PM
Subject: Re: [RuGRiD-Laptop] Re: Scored something...










------------------------------------------------------------------------------
    I'd bet that it used the IEEE488 Grid serial adaptor which fit in the adaptor slot to interface with the many temperature, etc. analogue devices more available in that format than those to the standard serial port connection. (which was used by Tramiel in the Pet for the same reason)

  Lawrence

  From: "techtalklive@..." <doug@...>
  To: RuGRiD-Laptop@yahoogroups.com
  Sent: Monday, October 29, 2012 1:19:36 PM
  Subject: [RuGRiD-Laptop] Re: Scored something...




  ARGH.  Too much going on.
  One more time...

  Honeywell Loader Terminal Manual

  Also posted in the files under a folder of similar name.


  --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
  >
  > Doug,
  > Did I miss something?  It appears to link to the analog displays for a tempature controller.
  > -SHawn
  >
  >
  > ________________________________
  > From: Douglas memphis@...
  > To: RuGRiD-Laptop@yahoogroups.com
  > Sent: Monday, October 29, 2012 11:52 AM
  > Subject: [RuGRiD-Laptop] Re: Scored something...
  >
  >
  >
  >
  >
  > A Honeywell Loader PC Manual!
  >
  > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
  > >
  > > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
  > >
  > > Looks like Honeywell released a specially configured GRiD for
  > > their purposes.
  > >
  > > Should I keep it together or use it for parts?
  > >
  > > There is very little I can find on the web about it.
  > >
  >

Yahoo! Message number: 2635
Date: Tue, 30 Oct 2012 11:50:59 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Spare Gridcase 3+ system boards?

Welcome, Josh.  I'm Tom, a.k.a. N8EUJ out of Burton, Michigan.  The only 
GRiD I have is a 1520 lapful that was given to me several years ago.  It 
needs a new Dallas RTC chip, unless I can shoehorn a battery in there 
somehow.  But, last time I powered it up, the hard drive spun up, and once I 
let the system figure out what kind of hard drive it had, DOS booted, and 
everything seemed to work.  Display looks like mud, compared to the LCDs we 
have nowadays, but it does work.  No GRiD parts, though, sorry to say.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message ----- 
From: "jadersch" <derschjo@...>
To: <RuGRiD-Laptop@yahoogroups.com>
Sent: Monday, October 29, 2012 7:45 PM
Subject: [RuGRiD-Laptop] Spare Gridcase 3+ system boards?


> Hi all --
>
> I'm new to the list and I have a small collection of GRiD systems (A 
> Compass II, a Convertible 486 (2270) and a GridCase 3+).
>
> The last of these I acquired recently and it's suffered some major damage 
> to the system board due to an exploding RTC battery.  It's questionable 
> whether it's possible to repair the damage, and before I start along that 
> path I thought I'd ask whether anyone here has any boards going spare.
>
> Thanks!
> Josh
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>

Yahoo! Message number: 2636
Date: Tue, 30 Oct 2012 13:22:34 -0400
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=utf-8

No.  -488 is also also known as  GPIB. It's totally different than computer parallel port standard.
-Shawn 

-------- Original message --------
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
From: Tom Rutherford <n8euj@sbcglobal.net>
To: RuGRiD-Laptop@yahoogroups.com
CC: Re: [RuGRiD-Laptop] Re: Scored something...

  

Isn't IEEE-488 parallel?  That's what the hard drives, floppy drives, and other things used on the PET and CBM models that Commodore came out with in the early '80s.  Also used on the VIC-20 and C-64 with a Buscard-II plugged into the User Port.  Had to have a heavier power supply than the stock supply that came with the 'puter, because the Buscard-II interface board pulled a lot of power.
 
-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."
 
 
----- Original Message -----
From: Lawrence Walker
To: RuGRiD-Laptop@yahoogroups.com
Sent: Monday, October 29, 2012 8:02 PM
Subject: Re: [RuGRiD-Laptop] Re: Scored something...



  I'd bet that it used the IEEE488 Grid serial adaptor which fit in the adaptor slot to interface with the many temperature, etc. analogue devices more available in that format than those to the standard serial port connection. (which was used by Tramiel in the Pet for the same reason)

Lawrence

From: "techtalklive@ymail.com" <doug@crawfordltd.com>
To: RuGRiD-Laptop@yahoogroups.com 
Sent: Monday, October 29, 2012 1:19:36 PM
Subject: [RuGRiD-Laptop] Re: Scored something...

ARGH.  Too much going on. 
One more time...

Honeywell Loader Terminal Manual 

Also posted in the files under a folder of similar name.


--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> Doug,
> Did I miss something?  It appears to link to the analog displays for a tempature controller.
> -SHawn
> 
> 
> ________________________________
> From: Douglas memphis@...
> To: RuGRiD-Laptop@yahoogroups.com 
> Sent: Monday, October 29, 2012 11:52 AM
> Subject: [RuGRiD-Laptop] Re: Scored something...
> 
> 
> 
> 
> 
> A Honeywell Loader PC Manual! 
> 
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
> >
> > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
> > 
> > Looks like Honeywell released a specially configured GRiD for
> > their purposes.
> > 
> > Should I keep it together or use it for parts?
> > 
> > There is very little I can find on the web about it.
> >
>

Yahoo! Message number: 2637
Date: Wed, 31 Oct 2012 00:31:09 -0000
From: "Androgenoide"
Subject: Re: Scored something...

1550's have two com ports.










--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Whoa!
>
> That is some file! But I started looking through it and I am really confused now. On page 15 it says the computer must be compatible with WIndows 2000 or XP. I think they're talking about another computer, not a GRiD. There's no way a Grid 1520 could handle those OS's. There was a drawing of the back of a GRiD like looking computer later on, but it featured TWO serial ports. No GRiD I know did that. I do remember the one that I got, and it was just a simple 1520 with extra programming on it. It doesn't seem this manual is for that computer.
> 
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> >
> > ARGH.  Too much going on.
> > One more time...
> >
> > Honeywell Loader Terminal Manual
> > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> > ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> > honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> > QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
> >
> > Also posted in the files under a folder of similar name.
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> > >
> > > Doug,
> > > Did I miss something?  It appears to link to the analog displays for a
> > tempature controller.
> > > -SHawn
> > >
> > >
> > > ________________________________
> > >  From: Douglas memphis@
> > > To: RuGRiD-Laptop@yahoogroups.com
> > > Sent: Monday, October 29, 2012 11:52 AM
> > > Subject: [RuGRiD-Laptop] Re: Scored something...
> > >
> > >
> > >
> > >
> > >
> > > A Honeywell Loader PC Manual!
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
> > > >
> > > >
> > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> > 984.m1497.l2649
> > > >
> > > > Looks like Honeywell released a specially configured GRiD for
> > > > their purposes.
> > > >
> > > > Should I keep it together or use it for parts?
> > > >
> > > > There is very little I can find on the web about it.
> > > >
> > >
> >
>

Yahoo! Message number: 2638
Date: Wed, 31 Oct 2012 07:09:23 -0000
From: "jeriddian"
Subject: Re: Scored something...

Okay,

Now I have to go back and look at the 1550's that I have. I'm almost sure that isn't the case, but I'll look to see. However, I'm out of town in California for a week, so I have to wait until I get back to look. Of course, I'm looking kind of sheepish......

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Androgenoide" <androgenoide@...> wrote:
>
>
> 1550's have two com ports.
>
>
>
>
>
>
>
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Whoa!
> >
> > That is some file! But I started looking through it and I am really confused now. On page 15 it says the computer must be compatible with WIndows 2000 or XP. I think they're talking about another computer, not a GRiD. There's no way a Grid 1520 could handle those OS's. There was a drawing of the back of a GRiD like looking computer later on, but it featured TWO serial ports. No GRiD I know did that. I do remember the one that I got, and it was just a simple 1520 with extra programming on it. It doesn't seem this manual is for that computer.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" <doug@> wrote:
> > >
> > > ARGH.  Too much going on.
> > > One more time...
> > >
> > > Honeywell Loader Terminal Manual
> > > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> > > ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> > > honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> > > QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
> > >
> > > Also posted in the files under a folder of similar name.
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> > > >
> > > > Doug,
> > > > Did I miss something?  It appears to link to the analog displays for a
> > > tempature controller.
> > > > -SHawn
> > > >
> > > >
> > > > ________________________________
> > > >  From: Douglas memphis@
> > > > To: RuGRiD-Laptop@yahoogroups.com
> > > > Sent: Monday, October 29, 2012 11:52 AM
> > > > Subject: [RuGRiD-Laptop] Re: Scored something...
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > A Honeywell Loader PC Manual!
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
> > > > >
> > > > >
> > > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> > > 984.m1497.l2649
> > > > >
> > > > > Looks like Honeywell released a specially configured GRiD for
> > > > > their purposes.
> > > > >
> > > > > Should I keep it together or use it for parts?
> > > > >
> > > > > There is very little I can find on the web about it.
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2639
Date: Wed, 31 Oct 2012 07:35:54 -0400
From: "Len.C"
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=ISO-8859-1; format=flowed

Handle on my 1550SX says

Serial A                    Serial B             Monitor
GRiD Peripheral      Parallel



On 10/31/2012 3:09 AM, jeriddian wrote:
>
> Okay,
>
> Now I have to go back and look at the 1550's that I have. I'm almost 
> sure that isn't the case, but I'll look to see. However, I'm out of 
> town in California for a week, so I have to wait until I get back to 
> look. Of course, I'm looking kind of sheepish......
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "Androgenoide" 
> <androgenoide@...> wrote:
> >
> >
> > 1550's have two com ports.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Whoa!
> > >
> > > That is some file! But I started looking through it and I am 
> really confused now. On page 15 it says the computer must be 
> compatible with WIndows 2000 or XP. I think they're talking about 
> another computer, not a GRiD. There's no way a Grid 1520 could handle 
> those OS's. There was a drawing of the back of a GRiD like looking 
> computer later on, but it featured TWO serial ports. No GRiD I know 
> did that. I do remember the one that I got, and it was just a simple 
> 1520 with extra programming on it. It doesn't seem this manual is for 
> that computer.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > >
> > > > ARGH. Too much going on.
> > > > One more time...
> > > >
> > > > Honeywell Loader Terminal Manual
> > > > 
> <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&>> 
> > > 
> ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> > > > 
> honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> > > > QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
> > > >
> > > > Also posted in the files under a folder of similar name.
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, Shawnerz <shawnerz@> wrote:
> > > > >
> > > > > Doug,
> > > > > Did I miss something? It appears to link to the analog 
> displays for a
> > > > tempature controller.
> > > > > -SHawn
> > > > >
> > > > >
> > > > > ________________________________
> > > > > From: Douglas memphis@
> > > > > To: RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>
> > > > > Sent: Monday, October 29, 2012 11:52 AM
> > > > > Subject: [RuGRiD-Laptop] Re: Scored something...
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > A Honeywell Loader PC Manual!
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" doug@ wrote:
> > > > > >
> > > > > >
> > > > 
> http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> <http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3>> 
> > > 984.m1497.l2649
> > > > > >
> > > > > > Looks like Honeywell released a specially configured GRiD for
> > > > > > their purposes.
> > > > > >
> > > > > > Should I keep it together or use it for parts?
> > > > > >
> > > > > > There is very little I can find on the web about it.
> > > > > >
> > > > >
> > > >
> > >
> >
>
> 

Yahoo! Message number: 2640
Date: Wed, 31 Oct 2012 07:39:44 -0400
From: "Len.C"
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=ISO-8859-1; format=flowed

PDF page 56 is exactly what the back of my 1550SX looks like

On 10/31/2012 3:09 AM, jeriddian wrote:
>
> Okay,
>
> Now I have to go back and look at the 1550's that I have. I'm almost 
> sure that isn't the case, but I'll look to see. However, I'm out of 
> town in California for a week, so I have to wait until I get back to 
> look. Of course, I'm looking kind of sheepish......
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "Androgenoide" 
> <androgenoide@...> wrote:
> >
> >
> > 1550's have two com ports.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Whoa!
> > >
> > > That is some file! But I started looking through it and I am 
> really confused now. On page 15 it says the computer must be 
> compatible with WIndows 2000 or XP. I think they're talking about 
> another computer, not a GRiD. There's no way a Grid 1520 could handle 
> those OS's. There was a drawing of the back of a GRiD like looking 
> computer later on, but it featured TWO serial ports. No GRiD I know 
> did that. I do remember the one that I got, and it was just a simple 
> 1520 with extra programming on it. It doesn't seem this manual is for 
> that computer.
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > >
> > > > ARGH. Too much going on.
> > > > One more time...
> > > >
> > > > Honeywell Loader Terminal Manual
> > > > 
> <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&>> 
> > > 
> ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> > > > 
> honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> > > > QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
> > > >
> > > > Also posted in the files under a folder of similar name.
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, Shawnerz <shawnerz@> wrote:
> > > > >
> > > > > Doug,
> > > > > Did I miss something? It appears to link to the analog 
> displays for a
> > > > tempature controller.
> > > > > -SHawn
> > > > >
> > > > >
> > > > > ________________________________
> > > > > From: Douglas memphis@
> > > > > To: RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>
> > > > > Sent: Monday, October 29, 2012 11:52 AM
> > > > > Subject: [RuGRiD-Laptop] Re: Scored something...
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > A Honeywell Loader PC Manual!
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" doug@ wrote:
> > > > > >
> > > > > >
> > > > 
> http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> <http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3>> 
> > > 984.m1497.l2649
> > > > > >
> > > > > > Looks like Honeywell released a specially configured GRiD for
> > > > > > their purposes.
> > > > > >
> > > > > > Should I keep it together or use it for parts?
> > > > > >
> > > > > > There is very little I can find on the web about it.
> > > > > >
> > > > >
> > > >
> > >
> >
>
> 

Yahoo! Message number: 2641
Date: Wed, 31 Oct 2012 14:16:55 -0000
From: "jeriddian"
Subject: Re: Scored something...

Baaaaaaaaaa...................

I stand corrected.

--- In RuGRiD-Laptop@yahoogroups.com, "Len.C" <lennard.gc@...> wrote:
>
> Handle on my 1550SX says
>
> Serial A                    Serial B             Monitor
> GRiD Peripheral      Parallel
>
>
>
> On 10/31/2012 3:09 AM, jeriddian wrote:
> >
> > Okay,
> >
> > Now I have to go back and look at the 1550's that I have. I'm almost
> > sure that isn't the case, but I'll look to see. However, I'm out of
> > town in California for a week, so I have to wait until I get back to
> > look. Of course, I'm looking kind of sheepish......
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "Androgenoide"
> > <androgenoide@> wrote:
> > >
> > >
> > > 1550's have two com ports.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > Whoa!
> > > >
> > > > That is some file! But I started looking through it and I am
> > really confused now. On page 15 it says the computer must be
> > compatible with WIndows 2000 or XP. I think they're talking about
> > another computer, not a GRiD. There's no way a Grid 1520 could handle
> > those OS's. There was a drawing of the back of a GRiD like looking
> > computer later on, but it featured TWO serial ports. No GRiD I know
> > did that. I do remember the one that I got, and it was just a simple
> > 1520 with extra programming on it. It doesn't seem this manual is for
> > that computer.
> > > >
> > > > Phil
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > ARGH. Too much going on.
> > > > > One more time...
> > > > >
> > > > > Honeywell Loader Terminal Manual
> > > > >
> > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&>>
> > > >
> > ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> > > > >
> > honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> > > > > QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
> > > > >
> > > > > Also posted in the files under a folder of similar name.
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, Shawnerz <shawnerz@> wrote:
> > > > > >
> > > > > > Doug,
> > > > > > Did I miss something? It appears to link to the analog
> > displays for a
> > > > > tempature controller.
> > > > > > -SHawn
> > > > > >
> > > > > >
> > > > > > ________________________________
> > > > > > From: Douglas memphis@
> > > > > > To: RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>
> > > > > > Sent: Monday, October 29, 2012 11:52 AM
> > > > > > Subject: [RuGRiD-Laptop] Re: Scored something...
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > A Honeywell Loader PC Manual!
> > > > > >
> > > > > > --- In RuGRiD-Laptop@...m
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" doug@ wrote:
> > > > > > >
> > > > > > >
> > > > >
> > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> > <http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3>>
> > > > 984.m1497.l2649
> > > > > > >
> > > > > > > Looks like Honeywell released a specially configured GRiD for
> > > > > > > their purposes.
> > > > > > >
> > > > > > > Should I keep it together or use it for parts?
> > > > > > >
> > > > > > > There is very little I can find on the web about it.
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> >
>

Yahoo! Message number: 2642
Date: Wed, 31 Oct 2012 14:17:54 -0000
From: "jeriddian"
Subject: Re: Scored something...

I guess then that the drawing in that manual refers to a 1550.

--- In RuGRiD-Laptop@yahoogroups.com, "Len.C" <lennard.gc@...> wrote:
>
> PDF page 56 is exactly what the back of my 1550SX looks like
>
> On 10/31/2012 3:09 AM, jeriddian wrote:
> >
> > Okay,
> >
> > Now I have to go back and look at the 1550's that I have. I'm almost
> > sure that isn't the case, but I'll look to see. However, I'm out of
> > town in California for a week, so I have to wait until I get back to
> > look. Of course, I'm looking kind of sheepish......
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "Androgenoide"
> > <androgenoide@> wrote:
> > >
> > >
> > > 1550's have two com ports.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > Whoa!
> > > >
> > > > That is some file! But I started looking through it and I am
> > really confused now. On page 15 it says the computer must be
> > compatible with WIndows 2000 or XP. I think they're talking about
> > another computer, not a GRiD. There's no way a Grid 1520 could handle
> > those OS's. There was a drawing of the back of a GRiD like looking
> > computer later on, but it featured TWO serial ports. No GRiD I know
> > did that. I do remember the one that I got, and it was just a simple
> > 1520 with extra programming on it. It doesn't seem this manual is for
> > that computer.
> > > >
> > > > Phil
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > >
> > > > > ARGH. Too much going on.
> > > > > One more time...
> > > > >
> > > > > Honeywell Loader Terminal Manual
> > > > >
> > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&>>
> > > >
> > ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> > > > >
> > honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> > > > > QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
> > > > >
> > > > > Also posted in the files under a folder of similar name.
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, Shawnerz <shawnerz@> wrote:
> > > > > >
> > > > > > Doug,
> > > > > > Did I miss something? It appears to link to the analog
> > displays for a
> > > > > tempature controller.
> > > > > > -SHawn
> > > > > >
> > > > > >
> > > > > > ________________________________
> > > > > > From: Douglas memphis@
> > > > > > To: RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>
> > > > > > Sent: Monday, October 29, 2012 11:52 AM
> > > > > > Subject: [RuGRiD-Laptop] Re: Scored something...
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > A Honeywell Loader PC Manual!
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" doug@ wrote:
> > > > > > >
> > > > > > >
> > > > >
> > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> > <http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3>>
> > > > 984.m1497.l2649
> > > > > > >
> > > > > > > Looks like Honeywell released a specially configured GRiD for
> > > > > > > their purposes.
> > > > > > >
> > > > > > > Should I keep it together or use it for parts?
> > > > > > >
> > > > > > > There is very little I can find on the web about it.
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> >
>

Yahoo! Message number: 2643
Date: Wed, 31 Oct 2012 11:10:21 -0400
From: "Tom Rutherford"
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset="UTF-8"

Well, I know it's different from IEEE-1284 and Centronics, but there's a heck of a lot of wires there to just be serial.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message -----
From: Shawnerz
To: rugrid-laptop@yahoogroups.com
Sent: Tuesday, October 30, 2012 1:22 PM
Subject: Re: [RuGRiD-Laptop] Re: Scored something...




No.  -488 is also also known as  GPIB. It's totally different than computer parallel port standard.
-Shawn



-------- Original message --------
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
From: Tom Rutherford <n8euj@...>
To: RuGRiD-Laptop@yahoogroups.com
CC: Re: [RuGRiD-Laptop] Re: Scored something...


 
Isn't IEEE-488 parallel?  That's what the hard drives, floppy drives, and other things used on the PET and CBM models that Commodore came out with in the early '80s.  Also used on the VIC-20 and C-64 with a Buscard-II plugged into the User Port.  Had to have a heavier power supply than the stock supply that came with the 'puter, because the Buscard-II interface board pulled a lot of power.

-- 73 DE Tom Rutherford, N8EUJ, Burton, MI
"She said it was either her or the ham radio.  Over."


----- Original Message -----
From: Lawrence Walker
To: RuGRiD-Laptop@yahoogroups.com
Sent: Monday, October 29, 2012 8:02 PM
Subject: Re: [RuGRiD-Laptop] Re: Scored something...







------------------------------------------------------------------------------
    I'd bet that it used the IEEE488 Grid serial adaptor which fit in the adaptor slot to interface with the many temperature, etc. analogue devices more available in that format than those to the standard serial port connection. (which was used by Tramiel in the Pet for the same reason)

  Lawrence

  From: "techtalklive@..." <doug@...>
  To: RuGRiD-Laptop@yahoogroups.com
  Sent: Monday, October 29, 2012 1:19:36 PM
  Subject: [RuGRiD-Laptop] Re: Scored something...




  ARGH.  Too much going on.
  One more time...

  Honeywell Loader Terminal Manual

  Also posted in the files under a folder of similar name.


  --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
  >
  > Doug,
  > Did I miss something?  It appears to link to the analog displays for a tempature controller.
  > -SHawn
  >
  >
  > ________________________________
  > From: Douglas memphis@...
  > To: RuGRiD-Laptop@yahoogroups.com
  > Sent: Monday, October 29, 2012 11:52 AM
  > Subject: [RuGRiD-Laptop] Re: Scored something...
  >
  >
  >
  >
  >
  > A Honeywell Loader PC Manual!
  >
  > --- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@" doug@ wrote:
  > >
  > > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
  > >
  > > Looks like Honeywell released a specially configured GRiD for
  > > their purposes.
  > >
  > > Should I keep it together or use it for parts?
  > >
  > > There is very little I can find on the web about it.
  > >
  >

Yahoo! Message number: 2644
Date: Wed, 31 Oct 2012 20:49:41 -0000
From: "Douglas"
Subject: Re: Scored something...

IEEE488/GPIB is a parallel data bus, but not a parallel printer port.
Its a robust handy old bus, albeit slow by yesterdays standards.
So there was a GPIB interface for GRiD that went in the power module
receptacle/port?
I guess I need a list of all of those modules... though it seems
they are impossible to come by.

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
>
> Looks like Honeywell released a specially configured GRiD for
> their purposes.
>
> Should I keep it together or use it for parts?
>
> There is very little I can find on the web about it.
>

Yahoo! Message number: 2645
Date: Wed, 31 Oct 2012 20:50:29 -0000
From: "Douglas"
Subject: Re: Scored something...

Wow that manual sure stirred stuff up!
So should I keep this unit together or part it?
Hmmmmm......

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> I guess then that the drawing in that manual refers to a 1550.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Len.C" <lennard.gc@> wrote:
> >
> > PDF page 56 is exactly what the back of my 1550SX looks like
> >
> > On 10/31/2012 3:09 AM, jeriddian wrote:
> > >
> > > Okay,
> > >
> > > Now I have to go back and look at the 1550's that I have. I'm almost
> > > sure that isn't the case, but I'll look to see. However, I'm out of
> > > town in California for a week, so I have to wait until I get back to
> > > look. Of course, I'm looking kind of sheepish......
> > >
> > > Phil
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "Androgenoide"
> > > <androgenoide@> wrote:
> > > >
> > > >
> > > > 1550's have two com ports.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > > Whoa!
> > > > >
> > > > > That is some file! But I started looking through it and I am
> > > really confused now. On page 15 it says the computer must be
> > > compatible with WIndows 2000 or XP. I think they're talking about
> > > another computer, not a GRiD. There's no way a Grid 1520 could handle
> > > those OS's. There was a drawing of the back of a GRiD like looking
> > > computer later on, but it featured TWO serial ports. No GRiD I know
> > > did that. I do remember the one that I got, and it was just a simple
> > > 1520 with extra programming on it. It doesn't seem this manual is for
> > > that computer.
> > > > >
> > > > > Phil
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" <doug@> wrote:
> > > > > >
> > > > > > ARGH. Too much going on.
> > > > > > One more time...
> > > > > >
> > > > > > Honeywell Loader Terminal Manual
> > > > > >
> > > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&&#92;
> > > <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&>>
> > > > >
> > > ved=0CCsQFjAC&url=http%3A%2F%2Fdownloads.applied-automation.com%2Fsam%2F&#92;
> > > > > >
> > > honeywell%2F620%2Fmanuals%2F6208982.pdf&ei=fseOUOX4Bqu60AGroICYCQ&usg=AF&#92;
> > > > > > QjCNFVwk5DjtMx6tUMHcQzBNwbiiXtRg>
> > > > > >
> > > > > > Also posted in the files under a folder of similar name.
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com 
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, Shawnerz <shawnerz@> wrote:
> > > > > > >
> > > > > > > Doug,
> > > > > > > Did I miss something? It appears to link to the analog
> > > displays for a
> > > > > > tempature controller.
> > > > > > > -SHawn
> > > > > > >
> > > > > > >
> > > > > > > ________________________________
> > > > > > > From: Douglas memphis@
> > > > > > > To: RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>
> > > > > > > Sent: Monday, October 29, 2012 11:52 AM
> > > > > > > Subject: [RuGRiD-Laptop] Re: Scored something...
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > A Honeywell Loader PC Manual!
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com
> > > <mailto:RuGRiD-Laptop%40yahoogroups.com>, "techtalklive@" doug@ wrote:
> > > > > > > >
> > > > > > > >
> > > > > >
> > > http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3&#92;
> > > <http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3>>
> > > > > 984.m1497.l2649
> > > > > > > >
> > > > > > > > Looks like Honeywell released a specially configured GRiD for
> > > > > > > > their purposes.
> > > > > > > >
> > > > > > > > Should I keep it together or use it for parts?
> > > > > > > >
> > > > > > > > There is very little I can find on the web about it.
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> > >
> >
>

Yahoo! Message number: 2646
Date: Wed, 31 Oct 2012 21:40:28 -0000
From: "Douglas"
Subject: Re: Military GridCase 1590

A wild guess, but some of the keyboard labeling
suggests a weapons system to me.
Isn't the remnant of GRiD computers now a european military
contractor?

--- In RuGRiD-Laptop@yahoogroups.com, "Paolo Binotti" <paolobinotti@...> wrote:
>
> I'm uploading same images af my GridCase 1590.... military Laptop with a strange keyboard...
>
> Any idea about its use ?
>
> Thanks for Your cooperation
> Paolo
>

Yahoo! Message number: 2647
Date: Wed, 31 Oct 2012 18:21:23 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=iso-8859-1

>So there was a GPIB interface for GRiD that went in the power module
receptacle/port?
Yes.� I have 2.
-Shawn



________________________________
 From: Douglas <memphis@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Wednesday, October 31, 2012 4:49 PM
Subject: [RuGRiD-Laptop] Re: Scored something...


IEEE488/GPIB is a parallel data bus, but not a parallel printer port.
Its a robust handy old bus, albeit slow by yesterdays standards.
So there was a GPIB interface for GRiD that went in the power module
receptacle/port?
I guess I need a list of all of those modules... though it seems
they are impossible to come by.

--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
> http://www.ebay.com/itm/251170311075?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
>
> Looks like Honeywell released a specially configured GRiD for
> their purposes.
>
> Should I keep it together or use it for parts?
>
> There is very little I can find on the web about it.
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2648
Date: Thu, 01 Nov 2012 04:35:40 -0000
From: "jeriddian"
Subject: Re: Military GridCase 1590

The present incarnation of GRID is GRiD Defence Systems in Great Britain. They continue to make military grade computers for specialized purposes for the British Defence forces, and others I think.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "Douglas" <memphis@...> wrote:
>
>
> A wild guess, but some of the keyboard labeling
> suggests a weapons system to me.
> Isn't the remnant of GRiD computers now a european military
> contractor?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Paolo Binotti" <paolobinotti@> wrote:
> >
> > I'm uploading same images af my GridCase 1590.... military Laptop with a strange keyboard...
> >
> > Any idea about its use ?
> >
> > Thanks for Your cooperation
> > Paolo
> >
>

Yahoo! Message number: 2649
Date: Sat, 3 Nov 2012 15:22:54 -0400
From: robert
Subject: GRiD 1450 power supply
text/plain; charset=ISO-8859-1

if anybody needs one, i just found one in my stash'o'stuff. $15 shipped.
USA sales only. 50 watt, g43-4180 with round 2 pin male on end, 17v 2.2a

-- 


73 de ke4mcl
"contesting on ham radio is like racing ford pintos, win or lose, other
people are still gonna laugh at you!"

Yahoo! Message number: 2650
Date: Wed, 14 Nov 2012 13:08:25 +0100
From: Manuel
Subject: Whats this? (ebay)

Hi all there,

i just looked for other old gems and found a "Notebook Honeywell 623-6000".

For me it looks like a grid of course ;)
But it looks like it has another description on the top of the screen.

Have you all ever seen this before or do you have an idea what kind of grid it is?

http://www.ebay.de/itm/Notebook-Honeywell-623-6000-Loader-Terminal-286er-fur-Sammler-/230879908224?pt=Klassische_Computer&hash=item35c183d180

regards,
Manuel

Yahoo! Message number: 2651
Date: Wed, 14 Nov 2012 07:41:30 -0500
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Whats this? (ebay)
text/plain; charset=utf-8

It looks like a Grid 1520.
-Shawn

-------- Original message --------
Subject: [RuGRiD-Laptop] Whats this? (ebay)
From: Manuel <Phantombrain@gmx.de>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] Whats this? (ebay)

Hi all there,

i just looked for other old gems and found a "Notebook Honeywell 623-6000".

For me it looks like a grid of course ;)
But it looks like it has another description on the top of the screen.

Have you all ever seen this before or do you have an idea what kind of grid it is?

http://www.ebay.de/itm/Notebook-Honeywell-623-6000-Loader-Terminal-286er-fur-Sammler-/230879908224?pt=Klassische_Computer&hash=item35c183d180

regards,
Manuel



------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2652
Date: Wed, 14 Nov 2012 15:40:04 -0000
From: "Douglas"
Subject: Re: Whats this? (ebay)

--- In RuGRiD-Laptop@yahoogroups.com, Manuel <Phantombrain@...> wrote:
>
> Hi all there,
>
> i just looked for other old gems and found a "Notebook Honeywell 623-6000".
>
> For me it looks like a grid of course ;)
> But it looks like it has another description on the top of the screen.
>
> Have you all ever seen this before or do you have an idea what kind of grid it is?
>
> http://www.ebay.de/itm/Notebook-Honeywell-623-6000-Loader-Terminal-286er-fur-Sammler-/230879908224?pt=Klassische_Computer&hash=item35c183d180
>
> regards,
> Manuel
>

Look at my post "scored something"  probably same or similar item I am referring to and got some answers for.  Likely a 1520, 286 floppy only machine.  I ponder if they are good as they are or excellent for parts.  No one chimed in on that regard.  In the files look for the Honeywell Loader folder, I put a manual that I found in there. Feel free to add to the knowledge base!

Yahoo! Message number: 2653
Date: Wed, 14 Nov 2012 18:53:15 -0800
From: jim s
Subject: Re: [RuGRiD-Laptop] Whats this? (ebay)

On 11/14/2012 4:08 AM, Manuel wrote:
> For me it looks like a grid of course;)
> But it looks like it has another description on the top of the screen.
>
> Have you all ever seen this before or do you have an idea what kind of grid it is?
>
> http://www.ebay.de/itm/Notebook-Honeywell-623-6000-Loader-Terminal-286er-fur-Sammler-/230879908224?pt=Klassische_Computer&hash=item35c183d180
I posted some links in my reply on 10/30/12 for the other one referred 
to.  It is for loading honeywell PLC's with firmware.

the PLC loader is a program on a 286 system, a n RS232 port on the 
system, an external RS485 to RS232 level onverter which also plugs into 
the parallel port for power.  As a programmer it may still have had 
value to someone with old controls to maintain.

I fight with Cincinnati Millacron people for ancient core memory parts 
which are even older.  Still in use in Mills in that case.
Jim

Yahoo! Message number: 2654
Date: Thu, 15 Nov 2012 19:27:05 +0000 (GMT)
From: Alessandro Aria
Subject: GRIDCASE 1590
text/plain; charset=utf-8

Hi everybody.


http://www.youtube.com/watch?v=_Kv7AFXvvho&feature=plcp

Yahoo! Message number: 2655
Date: Thu, 22 Nov 2012 05:28:17 -0000
From: "techtalklive@..."
Subject: Re: Scored something...

FYI, got it, and it says GRiDCase1520 on the bottom.
The other badges are Honeywell.
It powers up, 1M memory, Floppy hits. I don't have a
720K bootable floppy at this time.
Will play with it later.
One thing I might add about these loader units-
the probably have low hours.
I think the keyboard is really good, screen is
better than my 1530.
I may be swapping things around unless I'm cautioned
not to...

Yahoo! Message number: 2656
Date: Thu, 22 Nov 2012 06:02:53 -0000
From: "jeriddian"
Subject: Re: Scored something...

Remember that if you swap screens, you must also swap the power supply  in the back if they are different types of screens. Each of the screen types (plasma, LCD, EGA) required different power supplies which supplied different screen voltages. The Floppies however should take 1.44 Mb disks though.

Phil
--- In RuGRiD-Laptop@yahoogroups.com, "techtalklive@..." <doug@...> wrote:
>
>
>
> FYI, got it, and it says GRiDCase1520 on the bottom.
> The other badges are Honeywell.
> It powers up, 1M memory, Floppy hits. I don't have a
> 720K bootable floppy at this time.
> Will play with it later.
> One thing I might add about these loader units-
> the probably have low hours.
> I think the keyboard is really good, screen is
> better than my 1530.
> I may be swapping things around unless I'm cautioned
> not to...
>

Yahoo! Message number: 2657
Date: Thu, 22 Nov 2012 06:30:17 -0000
From: "techtalklive@..."
Subject: Re: Scored something...

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Remember that if you swap screens, you must also swap the power supply  in the back if they are different types of screens. Each of the screen types (plasma, LCD, EGA) required different power supplies which supplied different screen voltages. The Floppies however should take 1.44 Mb disks though.
>

Thanks!
*I THINK* they are the same screen type.
Now I'll make sure.
I'll try another boot disk then.
all I have are 1.44's.
I thought I saw some reference to 1520s as 720k vintage.
Maybe there's a mix?  I wouldn't be surprised.

Yahoo! Message number: 2658
Date: Wed, 21 Nov 2012 22:44:14 -0800 (PST)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Scored something...
text/plain; charset=iso-8859-1

All of my 1520's are able to read 1.44M floppies.


From: "techtalklive@ymail.com" <doug@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Thursday, November 22, 2012 1:30 AM
Subject: [RuGRiD-Laptop] Re: Scored something...



--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Remember that if you swap screens, you must also swap the power supply� in the back if they are different types of screens. Each of the screen types (plasma, LCD, EGA) required different power supplies which supplied different screen voltages. The Floppies however should take 1.44 Mb disks though.
>

Thanks!
*I THINK* they are the same screen type.
Now I'll make sure.
I'll try another boot disk then.
all I have are 1.44's.
I thought I saw some reference to 1520s as 720k vintage.
Maybe there's a mix?� I wouldn't be surprised.

Yahoo! Message number: 2659
Date: Mon, 26 Nov 2012 11:20:14 +0000 (GMT)
From: Alessandro Aria
Subject: GRIDCASE 1590
text/plain; charset=utf-8

________________________________
 Da: Alessandro Aria <alessandro.aria@yahoo.it>
A: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Inviato: Giovedì 15 Novembre 2012 20:27
Oggetto: [RuGRiD-Laptop] GRIDCASE 1590


 
Hi everybody.


GRIDCASE 1590  FOR SALE  

      http://www.ebay.it/sch/i.html?_trksid=p5197.m570.l1313&_nkw=grid+1590&_sacat=0&_from=R40
 

    BYE

Yahoo! Message number: 2660
Date: Tue, 18 Dec 2012 22:07:02 -0000
From: "jadersch"
Subject: GRiDCASE 1537E information?

Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).

It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present.  Anyone have one of these going spare?

Thanks!
Josh

Yahoo! Message number: 2661
Date: Tue, 18 Dec 2012 20:59:20 -0500
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] GRiDCASE 1537E information?
text/plain; charset=utf-8

Hello there, Josh.
I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector?
Sorry I can't be much help. The 1537 is rare find.
Feel free to post pictures. :-)
-Shawn



-------- Original message --------
Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
From: jadersch <derschjo@gmail.com>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] GRiDCASE 1537E information?

Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  

It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?

Thanks!
Josh



------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2662
Date: Wed, 19 Dec 2012 03:19:32 -0000
From: "jadersch"
Subject: Re: GRiDCASE 1537E information?

I've put some pictures up at:

http://yahozna.dyndns.org/scratch/gridcase/1537/

The hard drive looks to be IDE.  Thanks for any assistance!

- Josh


--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz  wrote:

 Hello there, Josh.
 I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn



 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch
 To: RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?

 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?). 

 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?

 Thanks!
 Josh



 ------------------------------------

 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2663
Date: Wed, 2 Jan 2013 12:09:13 +0000 (GMT)
From: Alessandro Aria
Subject: I: GRIDCASE 1590
text/plain; charset=utf-8

----- Messaggio inoltrato -----
Da: Alessandro Aria <alessandro.aria@yahoo.it>
A: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Cc: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Inviato: Sabato 12 Maggio 2012 5:19
Oggetto: I: GRIDCASE 1590




 
Hi ,a GRIDCASE 1590 for sale on eBay!

Ciao...Alex

Yahoo! Message number: 2664
Date: Thu, 03 Jan 2013 02:56:49 -0000
From: "Androgenoide"
Subject: Re: I: GRIDCASE 1590

250 Euros seems a little expensive... but then on the US ebay there's a Grid with an asking price of $855... pure fantasy!









--- In RuGRiD-Laptop@yahoogroups.com, Alessandro Aria <alessandro.aria@...> wrote:
>
>
>
> 
> ----- Messaggio inoltrato -----
> Da: Alessandro Aria <alessandro.aria@...>
> A: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
> Cc: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
> Inviato: Sabato 12 Maggio 2012 5:19
> Oggetto: I: GRIDCASE 1590
>
>
>
>
>  
> Hi ,a GRIDCASE 1590 for sale on eBay!
>
> Ciao...Alex
>

Yahoo! Message number: 2665
Date: Thu, 3 Jan 2013 08:49:10 +0000 (GMT)
From: Alessandro Aria
Subject: Re: [RuGRiD-Laptop] Re: I: GRIDCASE 1590
text/plain; charset=utf-8

Dear Androgenoide.











You're right, you have to keep in mind that the device has never been used, although it is of military origin.
Only one Glenair connector is that price.
However the price is to be reviewed
Bye Bye


________________________________
 Da: Androgenoide <androgenoide@yahoo.com>
A: RuGRiD-Laptop@yahoogroups.com
Inviato: Giovedì 3 Gennaio 2013 3:56
Oggetto: [RuGRiD-Laptop] Re: I: GRIDCASE 1590


 
250 Euros seems a little expensive... but then on the US ebay there's a Grid with an asking price of $855... pure fantasy!

--- In RuGRiD-Laptop@yahoogroups.com, Alessandro Aria <alessandro.aria@...> wrote:
>
>
>
>
> ----- Messaggio inoltrato -----
> Da: Alessandro Aria <alessandro.aria@...>
> A: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
> Cc: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
> Inviato: Sabato 12 Maggio 2012 5:19
> Oggetto: I: GRIDCASE 1590
>
>
>
>
>  
> Hi ,a GRIDCASE 1590 for sale on eBay!
>
> Ciao...Alex
>

Yahoo! Message number: 2666
Date: Tue, 22 Jan 2013 11:50:50 -0800 (PST)
From: severn eyrse
Subject:
text/plain; charset=us-ascii

http://rsr-productions.bugtusslerecords.com/yahoo.php?syllable819.php


Best regards
severn eyrse
1/22/2013 8:50:48 PM

Yahoo! Message number: 2667
Date: Mon, 28 Jan 2013 19:55:41 +0000 (GMT)
From: Alessandro Aria
Subject: GRIDCASE 1590
text/plain; charset=iso-8859-1

Hi guys,here I am again.


A GRIDCASE 1590 is for sale .

Hall the hardware is "TEMPEST CERTIFIED"
The connectors are produced by "GLENAIR" series 660-024NF
The�locking devices�and hinges are producer by "SOUTHCO"

Internally there is�a little board containing a pair of: IC operazional and one for BF audio,

connected to mother board;It would seem�to be�a small amply audio maybe for external
speakers.
Surprisingly,�on the top of�the�motherboard, as well��PROCESSOR�PENTIUM III, there are other IC's that�requiring�the surface�cooling .I�do not know�the function.

For now�is all...see you later.




http://www.ebay.it/itm/GRIDCASE-1590-/271145192818?pt=Retrocomputer&hash=item3f21834d72


Some foto


http://www.flickr.com/photos/prestazionidansia/sets/72157629181006050/

Alessandro. Stromboli Island

www.prestazionidansia.com

you tube "alex 2134"

Tnx

Yahoo! Message number: 2668
Date: Mon, 28 Jan 2013 12:14:20 -0800
From: Jim Stephens
Subject: Re: [RuGRiD-Laptop] Re: I: GRIDCASE 1590
text/plain; charset=UTF-8; format=flowed

Any speculation on export from Italy of such a device, and import 
perhaps back to US?

Though there is probably nothing useful there, the import / export 
people won't know that.

On 1/3/2013 12:49 AM, Alessandro Aria wrote:
>
>
> Dear Androgenoide.
>
>
> You're right, you have to keep in mind that the device has never been 
> used, although it is of military origin.
> Only one Glenair connector is that price.
> However the price is to be reviewed
> Bye Bye
> ------------------------------------------------------------------------
> *Da:* Androgenoide <androgenoide@...>
> *A:* RuGRiD-Laptop@yahoogroups.com
> *Inviato:* Gioved� 3 Gennaio 2013 3:56
> *Oggetto:* [RuGRiD-Laptop] Re: I: GRIDCASE 1590
>
> 250 Euros seems a little expensive... but then on the US ebay there's 
> a Grid with an asking price of $855... pure fantasy!
>
> --- In RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>, Alessandro Aria 
> <alessandro.aria@...> wrote:
> >
> >
> >
> >
> > ----- Messaggio inoltrato -----
> > Da: Alessandro Aria <alessandro.aria@...>
> > A: "RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>" 
> <RuGRiD-Laptop@yahoogroups.com <mailto:RuGRiD-Laptop%40yahoogroups.com>>
> > Cc: "RuGRiD-Laptop@yahoogroups.com 
> <mailto:RuGRiD-Laptop%40yahoogroups.com>" 
> <RuGRiD-Laptop@yahoogroups.com <mailto:RuGRiD-Laptop%40yahoogroups.com>>
> > Inviato: Sabato 12 Maggio 2012 5:19
> > Oggetto: I: GRIDCASE 1590
> >
> >
> >
> >
> > �
> > Hi ,a GRIDCASE 1590 for sale on eBay!
> >
> > Ciao...Alex
> >
>
>
>
>
>
> 

Yahoo! Message number: 2669
Date: Fri, 22 Feb 2013 00:24:16 -0800 (PST)
From: will p
Subject: will p
text/plain; charset=us-ascii

http://www.classicweddingcars.de/xqx/78qp5kx72hwuydhkyitaou?fp75ht7nj2w5drqx3uel0v

will p

Yahoo! Message number: 2670
Date: Sat, 09 Mar 2013 04:23:38 -0000
From: "DougCrawford"
Subject: Help! Won't boot.

Hello:
My Grid 1530 has a good working hard drive.
Dos 4.01 was on it, as I recall.
Somehow I corrupted the boot block.
I booted off a 4.01 floppy and could see the c: drive.
My intention was to SYS the c: drive.
But the floppy didn't have a sys command on it.
So I ran c:\dos\sys c:
It did its work.
I reboot, and it just hangs at the point where it should start accessing
the hard disk.
Any thoughts?
I guess I'll have to reload a DOS from scratch.
I have a backup of all the data files... so that's ok
if I have to.

DC

Yahoo! Message number: 2671
Date: Sat, 09 Mar 2013 13:08:02 -0500
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Help! Won't boot.
text/plain; charset=utf-8

This a shot in the dark. What if you left it powered up for about 10 minutes after the first failed boot. Then, do a reboot.
I'm wondering if your problem really is a CMOS battery issue.
-Shawn

-------- Original message --------
Subject: [RuGRiD-Laptop] Help! Won't boot.
From: DougCrawford <touchetek@gmail.com>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] Help! Won't boot.

Hello:
My Grid 1530 has a good working hard drive.
Dos 4.01 was on it, as I recall.
Somehow I corrupted the boot block.
I booted off a 4.01 floppy and could see the c: drive.
My intention was to SYS the c: drive.
But the floppy didn't have a sys command on it.
So I ran c:\dos\sys c:
It did its work.
I reboot, and it just hangs at the point where it should start accessing
the hard disk.
Any thoughts?
I guess I'll have to reload a DOS from scratch.
I have a backup of all the data files... so that's ok
if I have to.

DC



------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2672
Date: Sat, 09 Mar 2013 18:27:40 -0000
From: "DougCrawford"
Subject: Re: Help! Won't boot.

Ah good thinking.
Should have mentioned the history... I did the Dallas hack
on this and it has a new battery.
I think its something with the DOS; Perhaps not all 4.01 DOS
are equal.
I assume there's nothing GRID specific about DOS with
respect to the SYS command is there?

--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> This a shot in the dark. What if you left it powered up for about 10 minutes after the first failed boot. Then, do a reboot.
> I'm wondering if your problem really is a CMOS battery issue.
> -Shawn
>
> -------- Original message --------
> Subject: [RuGRiD-Laptop] Help! Won't boot.
> From: DougCrawford <touchetek@...>
> To: RuGRiD-Laptop@yahoogroups.com
> CC: [RuGRiD-Laptop] Help! Won't boot.
>
> Hello:
> My Grid 1530 has a good working hard drive.
> Dos 4.01 was on it, as I recall.
> Somehow I corrupted the boot block.
> I booted off a 4.01 floppy and could see the c: drive.
> My intention was to SYS the c: drive.
> But the floppy didn't have a sys command on it.
> So I ran c:&#92;dos&#92;sys c:
> It did its work.
> I reboot, and it just hangs at the point where it should start accessing
> the hard disk.
> Any thoughts?
> I guess I'll have to reload a DOS from scratch.
> I have a backup of all the data files... so that's ok
> if I have to.
>
> DC
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>

Yahoo! Message number: 2673
Date: Sat, 09 Mar 2013 14:32:49 -0500
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Re: Help! Won't boot.
text/plain; charset=utf-8

No, there is nothing specific with DOS.  I'm not sure what's going on.
-Shawn



-------- Original message --------
Subject: [RuGRiD-Laptop] Re: Help! Won't boot.
From: DougCrawford <touchetek@gmail.com>
To: RuGRiD-Laptop@yahoogroups.com
CC: [RuGRiD-Laptop] Re: Help! Won't boot.


Ah good thinking. 
Should have mentioned the history... I did the Dallas hack
on this and it has a new battery.
I think its something with the DOS; Perhaps not all 4.01 DOS
are equal. 
I assume there's nothing GRID specific about DOS with
respect to the SYS command is there?

--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> This a shot in the dark. What if you left it powered up for about 10 minutes after the first failed boot. Then, do a reboot.
> I'm wondering if your problem really is a CMOS battery issue.
> -Shawn
> 
> -------- Original message --------
> Subject: [RuGRiD-Laptop] Help! Won't boot.
> From: DougCrawford <touchetek@...>
> To: RuGRiD-Laptop@yahoogroups.com
> CC: [RuGRiD-Laptop] Help! Won't boot.
> 
> Hello:
> My Grid 1530 has a good working hard drive.
> Dos 4.01 was on it, as I recall.
> Somehow I corrupted the boot block.
> I booted off a 4.01 floppy and could see the c: drive.
> My intention was to SYS the c: drive.
> But the floppy didn't have a sys command on it.
> So I ran c:\dos\sys c:
> It did its work.
> I reboot, and it just hangs at the point where it should start accessing
> the hard disk.
> Any thoughts?
> I guess I'll have to reload a DOS from scratch.
> I have a backup of all the data files... so that's ok
> if I have to.
> 
> DC
> 
> 
> 
> ------------------------------------
> 
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2674
Date: Sun, 10 Mar 2013 04:43:28 -0000
From: "DougCrawford"
Subject: Re: Help! Won't boot.

Must have been something between the HD DOS and the Floppy DOS not matching up.
I got a copy of 6.22 and did a clean install.
Boots like a champ.
Thanks for the help!

--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> No, there is nothing specific with DOS.  I'm not sure what's going on.
> -Shawn
>
>
>
> -------- Original message --------
> Subject: [RuGRiD-Laptop] Re: Help! Won't boot.
> From: DougCrawford <touchetek@...>
> To: RuGRiD-Laptop@yahoogroups.com
> CC: [RuGRiD-Laptop] Re: Help! Won't boot.
>
>
> Ah good thinking.
> Should have mentioned the history... I did the Dallas hack
> on this and it has a new battery.
> I think its something with the DOS; Perhaps not all 4.01 DOS
> are equal.
> I assume there's nothing GRID specific about DOS with
> respect to the SYS command is there?
>
> --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> >
> > This a shot in the dark. What if you left it powered up for about 10 minutes after the first failed boot. Then, do a reboot.
> > I'm wondering if your problem really is a CMOS battery issue.
> > -Shawn
> >
> > -------- Original message --------
> > Subject: [RuGRiD-Laptop] Help! Won't boot.
> > From: DougCrawford <touchetek@>
> > To: RuGRiD-Laptop@yahoogroups.com
> > CC: [RuGRiD-Laptop] Help! Won't boot.
> >
> > Hello:
> > My Grid 1530 has a good working hard drive.
> > Dos 4.01 was on it, as I recall.
> > Somehow I corrupted the boot block.
> > I booted off a 4.01 floppy and could see the c: drive.
> > My intention was to SYS the c: drive.
> > But the floppy didn't have a sys command on it.
> > So I ran c:&#92;dos&#92;sys c:
> > It did its work.
> > I reboot, and it just hangs at the point where it should start accessing
> > the hard disk.
> > Any thoughts?
> > I guess I'll have to reload a DOS from scratch.
> > I have a backup of all the data files... so that's ok
> > if I have to.
> >
> > DC
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>

Yahoo! Message number: 2675
Date: Sun, 10 Mar 2013 05:02:27 -0000
From: "jeriddian"
Subject: Re: Help! Won't boot.

Actually, it was likely the version of DOS. DOS 3.3 was fairly stable. But DOS 4 was a poor rewrite and didn't last very long as it had a lot of bugs. It soon was rewritten and came back out as DOS 5 which was more stable. When you upgraded to DOS 6.22, you then solved all those problems.

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Must have been something between the HD DOS and the Floppy DOS not matching up.
> I got a copy of 6.22 and did a clean install.
> Boots like a champ.
> Thanks for the help!
>
> --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> >
> > No, there is nothing specific with DOS.  I'm not sure what's going on.
> > -Shawn
> >
> >
> >
> > -------- Original message --------
> > Subject: [RuGRiD-Laptop] Re: Help! Won't boot.
> > From: DougCrawford <touchetek@>
> > To: RuGRiD-Laptop@yahoogroups.com
> > CC: [RuGRiD-Laptop] Re: Help! Won't boot.
> >
> >
> > Ah good thinking.
> > Should have mentioned the history... I did the Dallas hack
> > on this and it has a new battery.
> > I think its something with the DOS; Perhaps not all 4.01 DOS
> > are equal.
> > I assume there's nothing GRID specific about DOS with
> > respect to the SYS command is there?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> > >
> > > This a shot in the dark. What if you left it powered up for about 10 minutes after the first failed boot. Then, do a reboot.
> > > I'm wondering if your problem really is a CMOS battery issue.
> > > -Shawn
> > >
> > > -------- Original message --------
> > > Subject: [RuGRiD-Laptop] Help! Won't boot.
> > > From: DougCrawford <touchetek@>
> > > To: RuGRiD-Laptop@yahoogroups.com
> > > CC: [RuGRiD-Laptop] Help! Won't boot.
> > >
> > > Hello:
> > > My Grid 1530 has a good working hard drive.
> > > Dos 4.01 was on it, as I recall.
> > > Somehow I corrupted the boot block.
> > > I booted off a 4.01 floppy and could see the c: drive.
> > > My intention was to SYS the c: drive.
> > > But the floppy didn't have a sys command on it.
> > > So I ran c:&#92;dos&#92;sys c:
> > > It did its work.
> > > I reboot, and it just hangs at the point where it should start accessing
> > > the hard disk.
> > > Any thoughts?
> > > I guess I'll have to reload a DOS from scratch.
> > > I have a backup of all the data files... so that's ok
> > > if I have to.
> > >
> > > DC
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> > >
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
>

Yahoo! Message number: 2676
Date: Mon, 08 Apr 2013 07:52:46 -0000
From: "jadersch"
Subject: Grid Compass II ROMs?

Anyone have any leads on ROMs for the Grid Compass I or II (1101 / 1129)?  I managed to accidentally format my 1129's internal bubble memory, and of course it doesn't want to boot from an external floppy...

I'm looking for ROM images for either CCOS or GRiD's custom MS-DOS for the Compass.  Documentation would also be nice -- if it's possible to get this to boot from the external drive that might also let me restore this machine to working condition.

Any ideas?

Thanks!
Josh

Yahoo! Message number: 2677
Date: Fri, 12 Apr 2013 20:44:20 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Grid Compass II ROMs?
text/plain; charset=iso-8859-1

Josh,
I read this earlier in the week when you sent it.� I just wanted to let you know that I don't have any of the original PROM's (bubble memory).
(I didn't want you to think no one read your email.)� If I come across any, I'll let you know.�
-Shawn


________________________________
 From: jadersch <derschjo@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Monday, April 8, 2013 3:52 AM
Subject: [RuGRiD-Laptop] Grid Compass II ROMs?


Anyone have any leads on ROMs for the Grid Compass I or II (1101 / 1129)?� I managed to accidentally format my 1129's internal bubble memory, and of course it doesn't want to boot from an external floppy...

I'm looking for ROM images for either CCOS or GRiD's custom MS-DOS for the Compass.� Documentation would also be nice -- if it's possible to get this to boot from the external drive that might also let me restore this machine to working condition.

Any ideas?

Thanks!
Josh



------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo!Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2678
Date: Tue, 16 Apr 2013 04:02:58 -0000
From: "DougCrawford"
Subject: Re: Grid Compass II ROMs?

Wish I could help.
Posted to let you know another did see your post.

--- In RuGRiD-Laptop@yahoogroups.com, "jadersch" <derschjo@...> wrote:
>
> Anyone have any leads on ROMs for the Grid Compass I or II (1101 / 1129)?  I managed to accidentally format my 1129's internal bubble memory, and of course it doesn't want to boot from an external floppy...
>
> I'm looking for ROM images for either CCOS or GRiD's custom MS-DOS for the Compass.  Documentation would also be nice -- if it's possible to get this to boot from the external drive that might also let me restore this machine to working condition.
>
> Any ideas?
>
> Thanks!
> Josh
>

Yahoo! Message number: 2679
Date: Tue, 16 Apr 2013 05:46:03 -0000
From: "jadersch"
Subject: Re: Grid Compass II ROMs?

Thanks, all.  Do let me know if you find anything.

The good news is I got the unit to boot from the floppy drive -- for future reference, holding down "F" is the magic that makes this happen :).  So it's up and running again.  But I'd still like to find GRiD's DOS for this thing, as well as any other software that's hiding out there...

- Josh

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Wish I could help.
> Posted to let you know another did see your post.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jadersch" <derschjo@> wrote:
> >
> > Anyone have any leads on ROMs for the Grid Compass I or II (1101 / 1129)?  I managed to accidentally format my 1129's internal bubble memory, and of course it doesn't want to boot from an external floppy...
> >
> > I'm looking for ROM images for either CCOS or GRiD's custom MS-DOS for the Compass.  Documentation would also be nice -- if it's possible to get this to boot from the external drive that might also let me restore this machine to working condition.
> >
> > Any ideas?
> >
> > Thanks!
> > Josh
> >
>

Yahoo! Message number: 2680
Date: Tue, 16 Apr 2013 05:49:59 -0000
From: "jadersch"
Subject: GRiDCASE 1530-series external VGA behavior

Hi all --

I've been making slow progress with my GridCase 1537E (TEMPEST-rated 1530).  After rebuilding the internal power supply (had some bad caps) it appears to be attempting to boot (beeps, attempts to boot from the floppy) but I'm getting nothing at all on the display (it doesn't even appear to be powering up).

I also get nothing on an external display connected to the VGA port, but I'm not sure if that's normal or not.  Anyone out there with a 1530-series machine that can confirm what the default behavior is if you power it up with an external monitor attached?  Is there a secret key-sequence to switch to the external display?

If I can get an external display to show something, that at least indicates that the video controller's working.

Thanks,
Josh

Yahoo! Message number: 2681
Date: Sun, 21 Apr 2013 02:10:17 -0000
From: "jadersch"
Subject: Electroluminescent Display debugging?

Anyone here have any tips for debugging the E-L display found in some GRiD models?  Thanks to a group member who helped me offlist, I've confirmed that my 1537 is running (Ctrl+Alt+Tab toggles between internal and external video, btw).  I get nothing at all on the internal E-L display, it does not appear to even be lighting up.

It looks like it's not getting proper power.  I've checked the video cable for continuity and it seems fine.  If I knew what voltages to check for (and where) I might be able to find the issue.  Of course, a service manual would be ideal but I'm guessing that those are pretty hard to come by.

Thanks,
Josh

Yahoo! Message number: 2682
Date: Sun, 21 Apr 2013 20:51:39 -0000
From: "jeriddian"
Subject: Re: Electroluminescent Display debugging?

Hi Josh,

I have PDF versions of the manuals, inclduing the full technical manual of the 1500 series altogether on my private server site. If you look at my file "Jeriddian's Downloadable Files.txt", you can directly download that, or you can download the files in their separate parts directly from the files section also. That may help you get a better idea on what to do.

Phil


--- In RuGRiD-Laptop@yahoogroups.com, "jadersch" <derschjo@...> wrote:
>
> Anyone here have any tips for debugging the E-L display found in some GRiD models?  Thanks to a group member who helped me offlist, I've confirmed that my 1537 is running (Ctrl+Alt+Tab toggles between internal and external video, btw).  I get nothing at all on the internal E-L display, it does not appear to even be lighting up.
>
> It looks like it's not getting proper power.  I've checked the video cable for continuity and it seems fine.  If I knew what voltages to check for (and where) I might be able to find the issue.  Of course, a service manual would be ideal but I'm guessing that those are pretty hard to come by.
>
> Thanks,
> Josh
>

Yahoo! Message number: 2683
Date: Mon, 22 Apr 2013 02:17:55 -0000
From: "DougCrawford"
Subject: 486 Drx2 on a 1530

Hello GRiDers.

This is for the folks who haven't tried other processors in their GRiDs.

I recently did some CPU swapping on my GRiD 1530.
The history of this is that the 1530 originally had a
16Mhz 386DX.  This was odd, as the 1530 is has a 25Mhz bus.
Overclocked from the factory, I wondered?

A ways back I popped that out and tried a TI486DLC-40 thinking that was a 386 compatible CPU. I think I was wrong.  It didn't work.
Rather than put the 16Mhz 386 back in, I had a 33Mhz part in hand
and put that in, along with a math coprocessor. 1530 was happy.

Recently I bought 2 Cyrix 486Drx2 20/40's off ebay recently and
got around to playing with them. The attraction, if you read about the chips of this sort from that era is that they double the clock
internally and add some cache.  This model only has 1K, better than
nothing.  Some other models from TI and IBM had more.
But are harder to find.  It took better part of a year for
a Drx2 model to show up on ebay as it was.

Admittedly the 20/40 speed is not quite right, (25/50 would be proper) but heck the original 386 was off by a clock factor of 2, so I thought these would probably work. (It all depends on the quality of the manufacturing process.)

I removed the 386 and 387 and tried each of these in turn
and they did work.  So I left one in for now.
I located the CACHE enabler software at this kind soul's site:
http://ps-2.kev009.com/ohlandl/8570_Tim_OConnor/cyrx.htm

The other Cyrix 486 drx2 (Japan manufacture) is up for auction up on ebay.
Give these are out of spec as described for the 1530, your
results may vary if you go for it.

Yahoo! Message number: 2684
Date: Sun, 21 Apr 2013 19:30:59 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] 486 Drx2 on a 1530
text/plain; charset=iso-8859-1

Wow.� Good work, Doug!


________________________________
 From: DougCrawford <touchetek@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Sunday, April 21, 2013 10:17 PM
Subject: [RuGRiD-Laptop] 486 Drx2 on  a 1530


Hello GRiDers.

This is for the folks who haven't tried other processors in their GRiDs.

I recently did some CPU swapping on my GRiD 1530.
The history of this is that the 1530 originally had a
16Mhz 386DX.� This was odd, as the 1530 is has a 25Mhz bus.
Overclocked from the factory, I wondered?

A ways back I popped that out and tried a TI486DLC-40 thinking that was a 386 compatible CPU. I think I was wrong.� It didn't work.
Rather than put the 16Mhz 386 back in, I had a 33Mhz part in hand
and put that in, along with a math coprocessor. 1530 was happy.

Recently I bought 2 Cyrix 486Drx2 20/40's off ebay recently and
got around to playing with them. The attraction, if you read about the chips of this sort from that era is that they double the clock
internally and add some cache.� This model only has 1K, better than
nothing.� Some other models from TI and IBM had more.
But are harder to find.� It took better part of a year for
a Drx2 model to show up on ebay as it was.

Admittedly the 20/40 speed is not quite right, (25/50 would be proper) but heck the original 386 was off by a clock factor of 2, so I thought these would probably work. (It all depends on the quality of the manufacturing process.)

I removed the 386 and 387 and tried each of these in turn
and they did work.� So I left one in for now.
I located the CACHE enabler software at this kind soul's site:
http://ps-2.kev009.com/ohlandl/8570_Tim_OConnor/cyrx.htm

The other Cyrix 486 drx2 (Japan manufacture) is up for auction up on ebay.
Give these are out of spec as described for the 1530, your
results may vary if you go for it.




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo!Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2685
Date: Mon, 22 Apr 2013 03:06:30 -0000
From: "DougCrawford"
Subject: Re: 486 Drx2 on a 1530

Hey thanks!
BTW: The Drx2 20/40 is running at about 100degF, so no
temp issue there.

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Hello GRiDers.
>
> This is for the folks who haven't tried other processors in their GRiDs.
>
> I recently did some CPU swapping on my GRiD 1530.
> The history of this is that the 1530 originally had a
> 16Mhz 386DX.  This was odd, as the 1530 is has a 25Mhz bus.
> Overclocked from the factory, I wondered?
>
> A ways back I popped that out and tried a TI486DLC-40 thinking that was a 386 compatible CPU. I think I was wrong.  It didn't work.
> Rather than put the 16Mhz 386 back in, I had a 33Mhz part in hand
> and put that in, along with a math coprocessor. 1530 was happy.
> 
> Recently I bought 2 Cyrix 486Drx2 20/40's off ebay recently and
> got around to playing with them. The attraction, if you read about the chips of this sort from that era is that they double the clock
> internally and add some cache.  This model only has 1K, better than
> nothing.  Some other models from TI and IBM had more.
> But are harder to find.  It took better part of a year for
> a Drx2 model to show up on ebay as it was.
>
> Admittedly the 20/40 speed is not quite right, (25/50 would be proper) but heck the original 386 was off by a clock factor of 2, so I thought these would probably work. (It all depends on the quality of the manufacturing process.)
>
> I removed the 386 and 387 and tried each of these in turn
> and they did work.  So I left one in for now.
> I located the CACHE enabler software at this kind soul's site:
> http://ps-2.kev009.com/ohlandl/8570_Tim_OConnor/cyrx.htm
>
> The other Cyrix 486 drx2 (Japan manufacture) is up for auction up on ebay.
> Give these are out of spec as described for the 1530, your
> results may vary if you go for it.
>

Yahoo! Message number: 2686
Date: Mon, 22 Apr 2013 04:53:23 -0000
From: "jeriddian"
Subject: Re: 486 Drx2 on a 1530

Nice job Doug,

Although Grid didn't officially endorse it(I think.....), it was known early on that the Cyrix DX 486 could be substituted for the 386 DX in the 1530. I remember that modificationw as available in teh late 1980's when I bought my first GRiD 1530. As to the bus, the 386 DX chip (and it was a DX. That was one of GRiD's advertising points, that the 1530 was the world's first laptop that used the 386 DX), it is true the 386 DX ran at 25 MHz, but the bus and the rest of the board ran at 12.5 MHz as an SX machine. That may be why your 16 MHz chip did not work. But anyway, what you have there is a nice machine.

Phl

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Hello GRiDers.
>
> This is for the folks who haven't tried other processors in their GRiDs.
>
> I recently did some CPU swapping on my GRiD 1530.
> The history of this is that the 1530 originally had a
> 16Mhz 386DX.  This was odd, as the 1530 is has a 25Mhz bus.
> Overclocked from the factory, I wondered?
>
> A ways back I popped that out and tried a TI486DLC-40 thinking that was a 386 compatible CPU. I think I was wrong.  It didn't work.
> Rather than put the 16Mhz 386 back in, I had a 33Mhz part in hand
> and put that in, along with a math coprocessor. 1530 was happy.
>
> Recently I bought 2 Cyrix 486Drx2 20/40's off ebay recently and
> got around to playing with them. The attraction, if you read about the chips of this sort from that era is that they double the clock
> internally and add some cache.  This model only has 1K, better than
> nothing.  Some other models from TI and IBM had more.
> But are harder to find.  It took better part of a year for
> a Drx2 model to show up on ebay as it was.
>
> Admittedly the 20/40 speed is not quite right, (25/50 would be proper) but heck the original 386 was off by a clock factor of 2, so I thought these would probably work. (It all depends on the quality of the manufacturing process.)
>
> I removed the 386 and 387 and tried each of these in turn
> and they did work.  So I left one in for now.
> I located the CACHE enabler software at this kind soul's site:
> http://ps-2.kev009.com/ohlandl/8570_Tim_OConnor/cyrx.htm
>
> The other Cyrix 486 drx2 (Japan manufacture) is up for auction up on ebay.
> Give these are out of spec as described for the 1530, your
> results may vary if you go for it.
>

Yahoo! Message number: 2687
Date: Mon, 22 Apr 2013 05:32:16 -0000
From: "DougCrawford"
Subject: Re: 486 Drx2 on a 1530

Thanks also, Phil.
So the MB supplies 25Mhz to the CPU but 12.5Mhz to the rest of the system?  How cheap...  Ugg.
So my 50Mhz internally running 486Drx2 is hampered by 12.5 Mhz bus.
I guess that makes cache that much more important.
So revisiting the TI486DLC-40... I think it SHOULD have worked.
And it has 8K cache, which may be more important than the clock
multiplier of the Drx2, yes? I might have to try that chip again.
I hope the same cache enable program works...


--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Nice job Doug,
>
> Although Grid didn't officially endorse it(I think.....), it was known early on that the Cyrix DX 486 could be substituted for the 386 DX in the 1530. I remember that modificationw as available in teh late 1980's when I bought my first GRiD 1530. As to the bus, the 386 DX chip (and it was a DX. That was one of GRiD's advertising points, that the 1530 was the world's first laptop that used the 386 DX), it is true the 386 DX ran at 25 MHz, but the bus and the rest of the board ran at 12.5 MHz as an SX machine. That may be why your 16 MHz chip did not work. But anyway, what you have there is a nice machine.
>
> Phl
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> > Hello GRiDers.
> >
> > This is for the folks who haven't tried other processors in their GRiDs.
> >
> > I recently did some CPU swapping on my GRiD 1530.
> > The history of this is that the 1530 originally had a
> > 16Mhz 386DX.  This was odd, as the 1530 is has a 25Mhz bus.
> > Overclocked from the factory, I wondered?
> >
> > A ways back I popped that out and tried a TI486DLC-40 thinking that was a 386 compatible CPU. I think I was wrong.  It didn't work.
> > Rather than put the 16Mhz 386 back in, I had a 33Mhz part in hand
> > and put that in, along with a math coprocessor. 1530 was happy.
> >
> > Recently I bought 2 Cyrix 486Drx2 20/40's off ebay recently and
> > got around to playing with them. The attraction, if you read about the chips of this sort from that era is that they double the clock
> > internally and add some cache.  This model only has 1K, better than
> > nothing.  Some other models from TI and IBM had more.
> > But are harder to find.  It took better part of a year for
> > a Drx2 model to show up on ebay as it was.
> >
> > Admittedly the 20/40 speed is not quite right, (25/50 would be proper) but heck the original 386 was off by a clock factor of 2, so I thought these would probably work. (It all depends on the quality of the manufacturing process.)
> >
> > I removed the 386 and 387 and tried each of these in turn
> > and they did work.  So I left one in for now.
> > I located the CACHE enabler software at this kind soul's site:
> > http://ps-2.kev009.com/ohlandl/8570_Tim_OConnor/cyrx.htm
> >
> > The other Cyrix 486 drx2 (Japan manufacture) is up for auction up on ebay.
> > Give these are out of spec as described for the 1530, your
> > results may vary if you go for it.
> >
>

Yahoo! Message number: 2688
Date: Wed, 24 Apr 2013 22:13:53 -0000
From: "DougCrawford"
Subject: GRiD power cord repair

The DC cord end that plugs into the power supply (the GRiD specific pin side) on my cord has become intermittent.  Does this shell come apart? I thought I'd query first before I destroy it "experimenting".
Thanks!

Yahoo! Message number: 2689
Date: Wed, 24 Apr 2013 22:14:21 -0000
From: "DougCrawford"
Subject: Re: Electroluminescent Display debugging?

Are you getting anywhere?

--- In RuGRiD-Laptop@yahoogroups.com, "jadersch" <derschjo@...> wrote:
>
> Anyone here have any tips for debugging the E-L display found in some GRiD models?  Thanks to a group member who helped me offlist, I've confirmed that my 1537 is running (Ctrl+Alt+Tab toggles between internal and external video, btw).  I get nothing at all on the internal E-L display, it does not appear to even be lighting up.
>
> It looks like it's not getting proper power.  I've checked the video cable for continuity and it seems fine.  If I knew what voltages to check for (and where) I might be able to find the issue.  Of course, a service manual would be ideal but I'm guessing that those are pretty hard to come by.
>
> Thanks,
> Josh
>

Yahoo! Message number: 2690
Date: Wed, 24 Apr 2013 23:46:55 -0000
From: "DougCrawford"
Subject: Re: 486 Drx2 on a 1530

Added some pics.
http://groups.yahoo.com/group/RuGRiD-Laptop/photos/album/0/list
That's the folder "GRiD 1530 w/ Cyrix Drx2"

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Hello GRiDers.
>
> This is for the folks who haven't tried other processors in their GRiDs.
>
> I recently did some CPU swapping on my GRiD 1530.
> The history of this is that the 1530 originally had a
> 16Mhz 386DX.  This was odd, as the 1530 is has a 25Mhz bus.
> Overclocked from the factory, I wondered?
>
> A ways back I popped that out and tried a TI486DLC-40 thinking that was a 386 compatible CPU. I think I was wrong.  It didn't work.
> Rather than put the 16Mhz 386 back in, I had a 33Mhz part in hand
> and put that in, along with a math coprocessor. 1530 was happy.
>
> Recently I bought 2 Cyrix 486Drx2 20/40's off ebay recently and
> got around to playing with them. The attraction, if you read about the chips of this sort from that era is that they double the clock
> internally and add some cache.  This model only has 1K, better than
> nothing.  Some other models from TI and IBM had more.
> But are harder to find.  It took better part of a year for
> a Drx2 model to show up on ebay as it was.
>
> Admittedly the 20/40 speed is not quite right, (25/50 would be proper) but heck the original 386 was off by a clock factor of 2, so I thought these would probably work. (It all depends on the quality of the manufacturing process.)
>
> I removed the 386 and 387 and tried each of these in turn
> and they did work.  So I left one in for now.
> I located the CACHE enabler software at this kind soul's site:
> http://ps-2.kev009.com/ohlandl/8570_Tim_OConnor/cyrx.htm
>
> The other Cyrix 486 drx2 (Japan manufacture) is up for auction up on ebay.
> Give these are out of spec as described for the 1530, your
> results may vary if you go for it.
>

Yahoo! Message number: 2691
Date: Wed, 24 Apr 2013 23:58:56 -0000
From: "DougCrawford"
Subject: GRiD Expansion Bus, IDE Controller

Being an active member of several other vintage computer groups,
there is copious work on those platforms for various interfaces and
emulations of hard drive systems. C64, PETs, Amigas, TRS-80s, etc,
all have vehicles to get IDE Flash or SD cards attached to the machines.

It seems to me the technical reference guide provides enough information
to attache an IDE controller, custom form factor, inside the GRID on the XT or AT bus, and probably get a Flash IDE "drive" attached.

Anyone see any particular pitfalls?  Interest?

Yahoo! Message number: 2692
Date: Thu, 25 Apr 2013 00:04:04 -0000
From: "DougCrawford"
Subject: Re: 486 Drx2 on a 1530

I am noticing occastional hiccups on boot-
sometimes the HD isn't found, sometimes himem.sys doesn't load.
Most the time it boots OK.
I guess there are some race conditions with the faster processing.
(and hope its not the start of a HD going bad)

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Hello GRiDers.
>
> This is for the folks who haven't tried other processors in their GRiDs.
>
> I recently did some CPU swapping on my GRiD 1530.
> The history of this is that the 1530 originally had a
> 16Mhz 386DX.  This was odd, as the 1530 is has a 25Mhz bus.
> Overclocked from the factory, I wondered?
>
> A ways back I popped that out and tried a TI486DLC-40 thinking that was a 386 compatible CPU. I think I was wrong.  It didn't work.
> Rather than put the 16Mhz 386 back in, I had a 33Mhz part in hand
> and put that in, along with a math coprocessor. 1530 was happy.
>
> Recently I bought 2 Cyrix 486Drx2 20/40's off ebay recently and
> got around to playing with them. The attraction, if you read about the chips of this sort from that era is that they double the clock
> internally and add some cache.  This model only has 1K, better than
> nothing.  Some other models from TI and IBM had more.
> But are harder to find.  It took better part of a year for
> a Drx2 model to show up on ebay as it was.
> 
> Admittedly the 20/40 speed is not quite right, (25/50 would be proper) but heck the original 386 was off by a clock factor of 2, so I thought these would probably work. (It all depends on the quality of the manufacturing process.)
>
> I removed the 386 and 387 and tried each of these in turn
> and they did work.  So I left one in for now.
> I located the CACHE enabler software at this kind soul's site:
> http://ps-2.kev009.com/ohlandl/8570_Tim_OConnor/cyrx.htm
>
> The other Cyrix 486 drx2 (Japan manufacture) is up for auction up on ebay.
> Give these are out of spec as described for the 1530, your
> results may vary if you go for it.
>

Yahoo! Message number: 2693
Date: Thu, 25 Apr 2013 00:34:34 -0000
From: "jeriddian"
Subject: Re: GRiD Expansion Bus, IDE Controller

Hi Doug

Actually, the one who has done the mot work in that direction here on this forum is Shawn. He's been working off and on to get his 1520 to boot off a flash drive.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Being an active member of several other vintage computer groups,
> there is copious work on those platforms for various interfaces and
> emulations of hard drive systems. C64, PETs, Amigas, TRS-80s, etc,
> all have vehicles to get IDE Flash or SD cards attached to the machines.
>
> It seems to me the technical reference guide provides enough information
> to attache an IDE controller, custom form factor, inside the GRID on the XT or AT bus, and probably get a Flash IDE "drive" attached.
>
> Anyone see any particular pitfalls?  Interest?
>

Yahoo! Message number: 2694
Date: Wed, 24 Apr 2013 19:08:18 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller
text/plain; charset=iso-8859-1

Hello there.
I saw the original email on my phone and wanted to wait until I got home to respond.� I need a real keyboard. :)
So Doug, yeah there will be an issue.� It's not impossible, I just haven't have much luck in solving it.
�
The issue is the Grid BIOS had hard drive models hard coded.� On boot, the BIOS code is executed from ROM.� In the code, the processor queries the hard drive to see what the geometry is.� It compares that response against the values hard coded in the BIOS code.� If the geometry (cyclinders, heads, sectors, LZ, precomp,) match, then it will boot.� If not, the computer will not boot from the hard drive.
The BIOS code could be changed and replaced with non-Grid BIOS.� I've never done that.� I've always tried modifying the Grid values and using Grid BIOS.
All of the drives the Grid BIOS looks for are Conner drives.� I've tried other IDE drives and I've tried Compact Flash cards.� I was never able to get those to boot.� Phil and I have been successful in getting another Conner drive to boot with modified BIOS code.
�
The BIOS code should still be in the Files area.� I have disassembled it but got nowhere.� If you're interested and want to continue in getting a Grid to boot from another type of IDE drive,�email me off list. I can tell you the other things I've learned from the BIOS file.
Good luck,
-Shawn


________________________________
 From: jeriddian <Jeriddian@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Wednesday, April 24, 2013 8:34 PM
Subject: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller


Hi Doug

Actually, the one who has done the mot work in that direction here on this forum is Shawn. He's been working off and on to get his 1520 to boot off a flash drive.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Being an active member of several other vintage computer groups,
> there is copious work on those platforms for various interfaces and
> emulations of hard drive systems. C64, PETs, Amigas, TRS-80s, etc,
> all have vehicles to get IDE Flash or SD cards attached to the machines.
>
> It seems to me the technical reference guide provides enough information
> to attache an IDE controller, custom form factor, inside the GRID on the XT or AT bus, and probably get a Flash IDE "drive" attached.
>
> Anyone see any particular pitfalls?� Interest?
>




------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2695
Date: Wed, 24 Apr 2013 19:37:47 -0700
From: Jim Stephens
Subject: Re: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller
text/plain; charset=ISO-8859-1; format=flowed

On 4/24/2013 7:08 PM, Shawnerz wrote:
>
> Hello there.
> I saw the original email on my phone and wanted to wait until I got 
> home to respond.  I need a real keyboard. :)
> So Doug, yeah there will be an issue.  It's not impossible, I just 
> haven't have much luck in solving it.
> The issue is the Grid BIOS had hard drive models hard coded.  On boot, 
> the BIOS code is executed from ROM.  In the code, the processor 
> queries the hard drive to see what the geometry is.  It compares that 
> response against the values hard coded in the BIOS code.  If the 
> geometry (cyclinders, heads, sectors, LZ, precomp,) match, then it 
> will boot.  If not, the computer will not boot from the hard drive.
> The BIOS code could be changed and replaced with non-Grid BIOS.  I've 
> never done that.  I've always tried modifying the Grid values and 
> using Grid BIOS.
> All of the drives the Grid BIOS looks for are Conner drives.  I've 
> tried other IDE drives and I've tried Compact Flash cards.  I was 
> never able to get those to boot.  Phil and I have been successful in 
> getting another Conner drive to boot with modified BIOS code.
> The BIOS code should still be in the Files area.  I have disassembled 
> it but got nowhere.  If you're interested and want to continue in 
> getting a Grid to boot from another type of IDE drive, email me off 
> list. I can tell you the other things I've learned from the BIOS file.
> Good luck,
> -Shawn
>
The thing to keep in mind with the booting process is that the bios 
config has the drive configuration.  Originally that was output to a 
xebec controller which had to be programmed to have CYL:H:S settings to 
function.

Then with IDE that was still mostly there, but the bios had the CHS 
settings and shoved them at the drive.  Later drives with mappings where 
the CHS of the bios didn't necessarily match the CHS of the drive, but 
the product of all three numbers did, had to be able to take in the CHS 
settings that was thrown at it and calculate where on a the drive it had 
to go.

They just basically threw a lot of that capability out.  Some drives 
will take what you give them and work just fine  later IDE drives and CF 
that is acting with the same interface typically don't. After several 
evolutions of configuration which eventually arrived at auto sensing, 
and all the modern bios and os capabilities, the CF and newest IDE would 
never see any of the prior crapola.

So finding out the settings as Shawn says is about the only way to 
handle the problem.  I have a Compaq Portable III which I've updated 
several times with higher capacity IDE up to the 500mb range.  The trick 
is there since it is a 286 is that the even and odd bytes are in 
different roms, and you have to also get the checksum to work over the 
entire bios image.  Not to hard to do if you know how, but a pain to 
figure out the first time.

Do you guys know if it is a 286, and how many parts the bios occupies?  
that may be all you need to be able to poke and change the image.

I was able to always do it with debug directly to the bin files.  I also 
composed a dinky assembler program to add all the bytes to the AL 
register and ran it with the registers manually pointing at the bios 
image in memory to get the checksums.  you may all have programs or 
better ways to do it, but that is the quick and dirty way.

If you need that formula let me know.
thanks
Jim

Yahoo! Message number: 2696
Date: Wed, 24 Apr 2013 19:41:21 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller
text/plain; charset=iso-8859-1

Jim,
I would be *very* interested.� I'll contact you off list.
-Shawn


________________________________
 From: Jim Stephens <jws@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Wednesday, April 24, 2013 10:37 PM
Subject: Re: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller








On 4/24/2013 7:08 PM, Shawnerz wrote:


>
>Hello there.
>I saw the original email on my phone and wanted to wait until I got home to respond.� I need a real keyboard. :)
>So Doug, yeah there will be an issue.� It's not impossible, I just haven't have much luck in solving it.
>�
>The issue is the Grid BIOS had hard drive models hard coded.� On boot, the BIOS code is executed from ROM.� In the code, the processor queries the hard drive to see what the geometry is.� It compares that response against the values hard coded in the BIOS code.� If the geometry (cyclinders, heads, sectors, LZ, precomp,) match, then it will boot.� If not, the computer will not boot from the hard drive.
>The BIOS code could be changed and replaced with non-Grid BIOS.� I've never done that.� I've always tried modifying the Grid values and using Grid BIOS.
>All of the drives the Grid BIOS looks for are Conner drives.� I've tried other IDE drives and I've tried Compact Flash cards.� I was never able to get those to boot.� Phil and I have been successful in getting another Conner drive to boot with modified BIOS code.
>�
>The BIOS code should still be in the Files area.� I have disassembled it but got nowhere.� If you're interested and want to continue in getting a Grid to boot from another type of IDE drive,�email me off list. I can tell you the other things I've learned from the BIOS file. 
>Good luck,
>-Shawn
>
>
The thing to keep in mind with the booting process is that the bios config has the drive configuration.� Originally that was output to a xebec controller which had to be programmed to have CYL:H:S settings to function.

Then with IDE that was still mostly there, but the bios had the CHS
    settings and shoved them at the drive.� Later drives with mappings
    where the CHS of the bios didn't necessarily match the CHS of the
    drive, but the product of all three numbers did, had to be able to
    take in the CHS settings that was thrown at it and calculate where
    on a the drive it had to go.�

They just basically threw a lot of that capability out.� Some drives
    will take what you give them and work just fine� later IDE drives
    and CF that is acting with the same interface typically don't.�
    After several evolutions of configuration which eventually arrived
    at auto sensing, and all the modern bios and os capabilities, the CF
    and newest IDE would never see any of the prior crapola.

So finding out the settings as Shawn says is about the only way to
    handle the problem.� I have a Compaq Portable III which I've updated
    several times with higher capacity IDE up to the 500mb range.� The
    trick is there since it is a 286 is that the even and odd bytes are
    in different roms, and you have to also get the checksum to work
    over the entire bios image.� Not to hard to do if you know how, but
    a pain to figure out the first time.

Do you guys know if it is a 286, and how many parts the bios
    occupies?� that may be all you need to be able to poke and change
    the image.

I was able to always do it with debug directly to the bin files.� I
    also composed a dinky assembler program to add all the bytes to the
    AL register and ran it with the registers manually pointing at the
    bios image in memory to get the checksums.� you may all have
    programs or better ways to do it, but that is the quick and dirty
    way.

If you need that formula let me know.
thanks
Jim

Yahoo! Message number: 2697
Date: Wed, 24 Apr 2013 19:49:34 -0700 (PDT)
From: Shawnerz
Subject: rid stuff
text/plain; charset=iso-8859-1

I was going to reply privately.� But, I thought other people could benefit from my questions.
�
Jim.
Wow!� What a revelation.� I *never* would have thought that the BIOS pushed the configuration to the drive.� Wow!� It makes sense now!
�
Do you have any idea why the Dallas 1287 (I'm doing this from memory, so I may have the model number incorrect) Real Time Clock (RTC) has to be functional in order for the Grid to boot?
And yes, the models I have are 286's with Odd/Even EPROMS.� Do you now how the checksum is computed and compared?� I was never able to find the checksum value in the BIOS code.� I ended up making my changes, then�manipulating the beginning text characters in order to get the checksum back to the original checksum.
Was there some weird 2 complement ROL's or ROR's going on in order to compute the checksum?� I could never find the value.
Thanks so much for your help.
-Shawn

Yahoo! Message number: 2698
Date: Thu, 25 Apr 2013 21:32:23 -0000
From: "DougCrawford"
Subject: Re: GRiD Expansion Bus, IDE Controller

I theorized with a different controller attached the bus things would be better.  I couldn't remember if the GRiD (1530) really was
IDE or MFM.  I guess not with the BIOS that intimately
involved its a tough predicament.

And I guess it would be a lot to ask for some other bios to work on the GRiD MB... Its the bios that isolates everything else from specifics of the MB so the BIOS IS specific.  Probably more hack
to get another BIOS to work than to get the GRiD BIOS to change
its HD access method.

But what about the ISA cards that had a different BIOS for the disk on ROM on them?  I wonder if the GRiD would play nice with them?
If so we might imagine that sort of thing built into an add on
controller.  Any food for thought there?


--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@...> wrote:
>
> Hello there.
> I saw the original email on my phone and wanted to wait until I got home to respond.� I need a real keyboard. :)
> So Doug, yeah there will be an issue.� It's not impossible, I just haven't have much luck in solving it.
> �
> The issue is the Grid BIOS had hard drive models hard coded.� On boot, the BIOS code is executed from ROM.� In the code, the processor queries the hard drive to see what the geometry is.� It compares that response against the values hard coded in the BIOS code.� If the geometry (cyclinders, heads, sectors, LZ, precomp,) match, then it will boot.� If not, the computer will not boot from the hard drive.
> The BIOS code could be changed and replaced with non-Grid BIOS.� I've never done that.� I've always tried modifying the Grid values and using Grid BIOS.
> All of the drives the Grid BIOS looks for are Conner drives.� I've tried other IDE drives and I've tried Compact Flash cards.� I was never able to get those to boot.� Phil and I have been successful in getting another Conner drive to boot with modified BIOS code.
> �
> The BIOS code should still be in the Files area.� I have disassembled it but got nowhere.� If you're interested and want to continue in getting a Grid to boot from another type of IDE drive,�email me off list. I can tell you the other things I've learned from the BIOS file.
> Good luck,
> -Shawn
>
>
> ________________________________
>  From: jeriddian <Jeriddian@...>
> To: RuGRiD-Laptop@yahoogroups.com
> Sent: Wednesday, April 24, 2013 8:34 PM
> Subject: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller
>
>
> Hi Doug
>
> Actually, the one who has done the mot work in that direction here on this forum is Shawn. He's been working off and on to get his 1520 to boot off a flash drive.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> > Being an active member of several other vintage computer groups,
> > there is copious work on those platforms for various interfaces and
> > emulations of hard drive systems. C64, PETs, Amigas, TRS-80s, etc,
> > all have vehicles to get IDE Flash or SD cards attached to the machines.
> >
> > It seems to me the technical reference guide provides enough information
> > to attache an IDE controller, custom form factor, inside the GRID on the XT or AT bus, and probably get a Flash IDE "drive" attached.
> >
> > Anyone see any particular pitfalls?� Interest?
> >
>
>
>
>
> ------------------------------------
>
> http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
>
>
>
> � � http://docs.yahoo.com/info/terms/
>

Yahoo! Message number: 2699
Date: Thu, 25 Apr 2013 21:59:35 -0000
From: "jeriddian"
Subject: Re: GRiD Expansion Bus, IDE Controller

If it's any help, all the GRiD 1500 series are MFM protocol.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> I theorized with a different controller attached the bus things would be better.  I couldn't remember if the GRiD (1530) really was
> IDE or MFM.  I guess not with the BIOS that intimately
> involved its a tough predicament.
>
> And I guess it would be a lot to ask for some other bios to work on the GRiD MB... Its the bios that isolates everything else from specifics of the MB so the BIOS IS specific.  Probably more hack
> to get another BIOS to work than to get the GRiD BIOS to change
> its HD access method.
>
> But what about the ISA cards that had a different BIOS for the disk on ROM on them?  I wonder if the GRiD would play nice with them?
> If so we might imagine that sort of thing built into an add on
> controller.  Any food for thought there?
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, Shawnerz <shawnerz@> wrote:
> >
> > Hello there.
> > I saw the original email on my phone and wanted to wait until I got home to respond.� I need a real keyboard. :)
> > So Doug, yeah there will be an issue.� It's not impossible, I just haven't have much luck in solving it.
> > �
> > The issue is the Grid BIOS had hard drive models hard coded.� On boot, the BIOS code is executed from ROM.� In the code, the processor queries the hard drive to see what the geometry is.� It compares that response against the values hard coded in the BIOS code.� If the geometry (cyclinders, heads, sectors, LZ, precomp,) match, then it will boot.� If not, the computer will not boot from the hard drive.
> > The BIOS code could be changed and replaced with non-Grid BIOS.� I've never done that.� I've always tried modifying the Grid values and using Grid BIOS.
> > All of the drives the Grid BIOS looks for are Conner drives.� I've tried other IDE drives and I've tried Compact Flash cards.� I was never able to get those to boot.� Phil and I have been successful in getting another Conner drive to boot with modified BIOS code.
> > �
> > The BIOS code should still be in the Files area.� I have disassembled it but got nowhere.� If you're interested and want to continue in getting a Grid to boot from another type of IDE drive,�email me off list. I can tell you the other things I've learned from the BIOS file.
> > Good luck,
> > -Shawn
> >
> >
> > ________________________________
> >  From: jeriddian <Jeriddian@>
> > To: RuGRiD-Laptop@yahoogroups.com
> > Sent: Wednesday, April 24, 2013 8:34 PM
> > Subject: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller
> >
> >
> > Hi Doug
> >
> > Actually, the one who has done the mot work in that direction here on this forum is Shawn. He's been working off and on to get his 1520 to boot off a flash drive.
> > 
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > > Being an active member of several other vintage computer groups,
> > > there is copious work on those platforms for various interfaces and
> > > emulations of hard drive systems. C64, PETs, Amigas, TRS-80s, etc,
> > > all have vehicles to get IDE Flash or SD cards attached to the machines.
> > >
> > > It seems to me the technical reference guide provides enough information
> > > to attache an IDE controller, custom form factor, inside the GRID on the XT or AT bus, and probably get a Flash IDE "drive" attached.
> > >
> > > Anyone see any particular pitfalls?� Interest?
> > >
> >
> >
> >
> >
> > ------------------------------------
> >
> > http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links
> >
> >
> >
> > � � http://docs.yahoo.com/info/terms/
> >
>

Yahoo! Message number: 2700
Date: Thu, 25 Apr 2013 19:23:35 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller
text/plain; charset=iso-8859-1

Jim,
Did you see my last email?� I'm eagerly awaiting a response. :)
-Shawn
P.S.� You read it yet?� You read it yet? You read it yet? ;-)


________________________________
 From: Jim Stephens <jws@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Wednesday, April 24, 2013 10:37 PM
Subject: Re: [RuGRiD-Laptop] Re: GRiD Expansion Bus, IDE Controller








On 4/24/2013 7:08 PM, Shawnerz wrote:


>
>Hello there.
>I saw the original email on my phone and wanted to wait until I got home to respond.� I need a real keyboard. :)
>So Doug, yeah there will be an issue.� It's not impossible, I just haven't have much luck in solving it.
>�
>The issue is the Grid BIOS had hard drive models hard coded.� On boot, the BIOS code is executed from ROM.� In the code, the processor queries the hard drive to see what the geometry is.� It compares that response against the values hard coded in the BIOS code.� If the geometry (cyclinders, heads, sectors, LZ, precomp,) match, then it will boot.� If not, the computer will not boot from the hard drive.
>The BIOS code could be changed and replaced with non-Grid BIOS.� I've never done that.� I've always tried modifying the Grid values and using Grid BIOS.
>All of the drives the Grid BIOS looks for are Conner drives.� I've tried other IDE drives and I've tried Compact Flash cards.� I was never able to get those to boot.� Phil and I have been successful in getting another Conner drive to boot with modified BIOS code.
>�
>The BIOS code should still be in the Files area.� I have disassembled it but got nowhere.� If you're interested and want to continue in getting a Grid to boot from another type of IDE drive,�email me off list. I can tell you the other things I've learned from the BIOS file.
>Good luck,
>-Shawn
>
>
>�����
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Yahoo! Message number: 2701
Date: Wed, 08 May 2013 18:46:01 -0000
From: "johntmilw"
Subject: Looking for DOS software

I recently acquired a nice working 1520 from ebay because I've always admired Grid's design, looks and exotic reputation. Mine has Lotus 1-2-3 and WordPerfect installed and they seem to work fine. The problem is, I know nothing about DOS... it's heyday was about a decade before my involvement with computers even began.

Can anyone recommend a good primer on DOS - preferably online - for a total DOS newbie so I can least do more than just turn it on and off? Even just some short instructions on how to navigate around the computer would be helpful... I know, it's sad but true and I admit it... I don't know how to use a computer without a mouse!

Also, I'd like to install more programs on it eventually, like the famous "SPOC" program in the files area of this group, but again, I don't have a clue about how to do it. Right now the only path to getting files onto this machine is through the floppy drive... I have managed to format some old floppies on my Win 7 Thinkpad that the Grid seems to recognize.

Finally, and in particular, I would like to get a world time zone/daylight clock program to run on the Grid... did such a program ever exist, and how would I go about getting it after all these years? Are there any repositories of old & orphaned DOS programs on the web? I've looked at some torrent sites but came up empty.

Any help with these issues would be greatly appreciated.

Yahoo! Message number: 2702
Date: Wed, 08 May 2013 20:35:50 -0000
From: "jeriddian"
Subject: Re: Looking for DOS software

Hi, John,

Fortunately, DOS is actually fairly simple in terms of its use. It depends on which version you are using (anywhere from ver. 3.2 to that last version which is 6.22. The manuals to each version can eb found for sale online (try ebay). There is a version 7, but it is limited and that was integrated into Windows 95). You can try this book I found-

http://www.alibris.com/booksearch.detail?invid=11575804273&browse=1&isbn=9781556156335&qsort=&page=1

As to old software, you can google for all sorts of old DOS software out there. You may be able to find one that does what you are looking for.

Best of luck to you.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "johntmilw" <xraydelta1.jt@...> wrote:
>
> I recently acquired a nice working 1520 from ebay because I've always admired Grid's design, looks and exotic reputation. Mine has Lotus 1-2-3 and WordPerfect installed and they seem to work fine. The problem is, I know nothing about DOS... it's heyday was about a decade before my involvement with computers even began.
>
> Can anyone recommend a good primer on DOS - preferably online - for a total DOS newbie so I can least do more than just turn it on and off? Even just some short instructions on how to navigate around the computer would be helpful... I know, it's sad but true and I admit it... I don't know how to use a computer without a mouse!
>
> Also, I'd like to install more programs on it eventually, like the famous "SPOC" program in the files area of this group, but again, I don't have a clue about how to do it. Right now the only path to getting files onto this machine is through the floppy drive... I have managed to format some old floppies on my Win 7 Thinkpad that the Grid seems to recognize.
>
> Finally, and in particular, I would like to get a world time zone/daylight clock program to run on the Grid... did such a program ever exist, and how would I go about getting it after all these years? Are there any repositories of old & orphaned DOS programs on the web? I've looked at some torrent sites but came up empty.
>
> Any help with these issues would be greatly appreciated.
>

Yahoo! Message number: 2703
Date: Tue, 16 Jul 2013 16:37:04 -0000
From: "DougCrawford"
Subject: GRID Memory, swap?

Hi GRID enthusiasts

I am looking for 8MB of memory for the GRID 1530 that I
have written about several times on this board.

For potential swap I have a GRID 1520 w/out memory that worked when it had memory. It has an LCD screen.  It is a Honeywell Bootloader variety that I have also written about on this board.

Thanks!

Yahoo! Message number: 2704
Date: Tue, 16 Jul 2013 10:03:12 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] GRID Memory, swap?
text/plain; charset=iso-8859-1

Doug,
You need, 30 pin, SIPP memory, right?
If so, all of mine is in my Grids.� Sorry,
-Shawn


________________________________
From: DougCrawford <touchetek@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Tuesday, July 16, 2013 12:37 PM
Subject: [RuGRiD-Laptop] GRID Memory, swap?


Hi GRID enthusiasts

I am looking for 8MB of memory for the GRID 1530 that I
have written about several times on this board.

For potential swap I have a GRID 1520 w/out memory that worked when it had memory. It has an LCD screen.� It is a Honeywell Bootloader variety that I have also written about on this board.

Thanks!



------------------------------------

http://groups.yahoo.com/group/rugrid-laptop/Yahoo!Groups Links



� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2705
Date: Tue, 16 Jul 2013 17:23:40 -0400
From: Doug Crawford
Subject: Re: [RuGRiD-Laptop] GRID Memory, swap?

Hi Shawn:
Yep those pesky SIPPs.
Thanks anyway!
DC

On 7/16/2013 1:03 PM, Shawnerz wrote:

 

Doug,

You need, 30 pin, SIPP memory, right?

If so, all of mine is in my Grids.  Sorry,

-Shawn

From: DougCrawford
To: RuGRiD-Laptop@yahoogroups.com
Sent: Tuesday, July 16, 2013 12:37 PM
Subject: [RuGRiD-Laptop] GRID Memory, swap?

Hi GRID enthusiasts

I am looking for 8MB of memory for the GRID 1530 that I
have written about several times on this board.

For potential swap I have a GRID 1520 w/out memory that worked when it had memory. It has an LCD screen.  It is a Honeywell Bootloader variety that I have also written about on this board.

Thanks!



------------------------------------

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Yahoo! Message number: 2706
Date: Wed, 24 Jul 2013 09:27:53 -0700 (PDT)
From: Jimmy Gillis
Subject: Jimmy Gillis
text/plain; charset=us-ascii

Fw: news
Hello! hot copy : 
http://imprinet.net/lpiwonth/xgcrqvkh/nnktc/Jimmy_Gillis.htm
Goodbye!Jimmy Gillis

Yahoo! Message number: 2707
Date: Tue, 06 Aug 2013 18:48:03 -0000
From: "DougCrawford"
Subject: GRiD 1530 SIPP specifics...

Can anyone quantify the attributes of the GRiD SIPPs so that one
can determine if a given SIPP on ebay will work in a GRiD?
Thanks!

Yahoo! Message number: 2708
Date: Tue, 6 Aug 2013 16:56:16 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] GRiD 1530 SIPP specifics...
text/plain; charset=iso-8859-1

I cannot.�
You might have to buy it to be sure if it will work.� "Spin the wheel, take a chance!"


________________________________
 From: DougCrawford <touchetek@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Tuesday, August 6, 2013 2:48 PM
Subject: [RuGRiD-Laptop] GRiD 1530 SIPP specifics...


Can anyone quantify the attributes of the GRiD SIPPs so that one
can determine if a given SIPP on ebay will work in a GRiD?
Thanks!




------------------------------------

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� � http://docs.yahoo.com/info/terms/

Yahoo! Message number: 2709
Date: Tue, 06 Aug 2013 21:02:33 -0400
From: Doug Crawford
Subject: Re: [RuGRiD-Laptop] GRiD 1530 SIPP specifics...

I could for the 256K ones, but the 1M ones are too pricey for monte carlo!

On 8/6/2013 7:56 PM, Shawnerz wrote:

 

I cannot. 

You might have to buy it to be sure if it will work.  "Spin the wheel, take a chance!"

From: DougCrawford
To: RuGRiD-Laptop@yahoogroups.com
Sent: Tuesday, August 6, 2013 2:48 PM
Subject: [RuGRiD-Laptop] GRiD 1530 SIPP specifics...

Can anyone quantify the attributes of the GRiD SIPPs so that one
can determine if a given SIPP on ebay will work in a GRiD?
Thanks!




------------------------------------

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Yahoo! Message number: 2710
Date: Wed, 07 Aug 2013 02:51:46 -0000
From: "jeriddian"
Subject: Re: GRiD 1530 SIPP specifics...

Hi,

The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common. 

Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.

These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.

If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.

The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.

Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.

There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.

Anyway, I hope that helps you with your SIPP search.

BTW, where did you find those 1 Mb SIPP's that were expensive?

Phil

Yahoo! Message number: 2711
Date: Wed, 07 Aug 2013 08:04:56 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

Thanks very much!
Does 8 or 9 bit (error corrected?) matter?
I see a lot of 9 chip parts, some are tall, some are shorter.
Then I see 3 chip horizontal mounted chips.
The original parts I have (256K) have 2 chips horizontal.
I assume the 3 chips are 9 bit and the originals are 8 bit?
So there is nothing else "custom" about the grid memories
other than the form factor? I sure hoped the pin out wasn't
custom.

Ebay has some 1MB parts.
Also saw some at ABC Resellers.

I tried to make some 1MB simms into sipps and failed miserably
and I'm a fairly decent technician.  Argh.

I just saw a design for the apple GS that mounted 4 dimms
on a 1M DIP board... so they were able to get the schematic
for those SIMMs to lash them up to the DIP pinouts.
Your envisioned retrofit shouldn't be any harder.
Good idea.  Much better than adapting 8 single 1MB DIMMs.
Might it be that one of those old 72 pin carriers of
2 or 4 30pin DIMMs might wire in even easier? And that the
carrier would nestle in the SIPP spot (if the DIMMs are leaning
over)?  That would perhaps be an even cleaner installation.

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
>
> Hi,
>
> The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
>
> Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
>
> These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
>
> If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
>
> The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
>
> Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
>
> There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
>
> Anyway, I hope that helps you with your SIPP search.
>
> BTW, where did you find those 1 Mb SIPP's that were expensive?
>
> Phil
>

Yahoo! Message number: 2712
Date: Wed, 07 Aug 2013 14:09:21 -0000
From: "jeriddian"
Subject: Re: GRiD 1530 SIPP specifics...

Hi, Doug,

It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.

Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.

I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.

One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.

Phil



--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
>
> Thanks very much!
> Does 8 or 9 bit (error corrected?) matter?
> I see a lot of 9 chip parts, some are tall, some are shorter.
> Then I see 3 chip horizontal mounted chips.
> The original parts I have (256K) have 2 chips horizontal.
> I assume the 3 chips are 9 bit and the originals are 8 bit?
> So there is nothing else "custom" about the grid memories
> other than the form factor? I sure hoped the pin out wasn't
> custom.
>
> Ebay has some 1MB parts.
> Also saw some at ABC Resellers.
>
> I tried to make some 1MB simms into sipps and failed miserably
> and I'm a fairly decent technician.  Argh.
>
> I just saw a design for the apple GS that mounted 4 dimms
> on a 1M DIP board... so they were able to get the schematic
> for those SIMMs to lash them up to the DIP pinouts.
> Your envisioned retrofit shouldn't be any harder.
> Good idea.  Much better than adapting 8 single 1MB DIMMs.
> Might it be that one of those old 72 pin carriers of
> 2 or 4 30pin DIMMs might wire in even easier? And that the
> carrier would nestle in the SIPP spot (if the DIMMs are leaning
> over)?  That would perhaps be an even cleaner installation.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> >
> > Hi,
> >
> > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> >
> > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> >
> > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> >
> > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> >
> > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> >
> > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> >
> > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> >
> > Anyway, I hope that helps you with your SIPP search.
> >
> > BTW, where did you find those 1 Mb SIPP's that were expensive?
> >
> > Phil
> >
>

Yahoo! Message number: 2713
Date: Wed, 07 Aug 2013 17:01:51 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

Well the sets of 4MB total SIPPS on ebay are too tall.
They also look to me as if they were hand made from SOMMs??

http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-8-80-speed-4MB-9chip-1024K-/130919854574?pt=LH_DefaultDomain_0&hash=item1e7b6e71ee
http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-8-80-speed-9chip-1024K-/200929540743?pt=LH_DefaultDomain_0&hash=item2ec8557a87
http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-7-70-speed-9chip-1024K-/200929432147?pt=LH_DefaultDomain_0&hash=item2ec853d253
There are scads of 256ks.


--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Hi, Doug,
>
> It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
>
> Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
>
> I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
>
> One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
>
> Phil
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> >
> > Thanks very much!
> > Does 8 or 9 bit (error corrected?) matter?
> > I see a lot of 9 chip parts, some are tall, some are shorter.
> > Then I see 3 chip horizontal mounted chips.
> > The original parts I have (256K) have 2 chips horizontal.
> > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > So there is nothing else "custom" about the grid memories
> > other than the form factor? I sure hoped the pin out wasn't
> > custom.
> >
> > Ebay has some 1MB parts.
> > Also saw some at ABC Resellers.
> >
> > I tried to make some 1MB simms into sipps and failed miserably
> > and I'm a fairly decent technician.  Argh.
> >
> > I just saw a design for the apple GS that mounted 4 dimms
> > on a 1M DIP board... so they were able to get the schematic
> > for those SIMMs to lash them up to the DIP pinouts.
> > Your envisioned retrofit shouldn't be any harder.
> > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > Might it be that one of those old 72 pin carriers of
> > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > over)?  That would perhaps be an even cleaner installation.
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > >
> > > Hi,
> > >
> > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > >
> > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > >
> > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > >
> > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > >
> > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > >
> > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > >
> > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > >
> > > Anyway, I hope that helps you with your SIPP search.
> > >
> > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > >
> > > Phil
> > >
> >
>

Yahoo! Message number: 2714
Date: Wed, 07 Aug 2013 18:06:10 -0000
From: "jeriddian"
Subject: Re: GRiD 1530 SIPP specifics...

Yeah, you're right. They are too tall for the 1530. But they do look like originals. Your search is similar to mine. Scads of 256K's. No 1Mb's.

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> 
> Well the sets of 4MB total SIPPS on ebay are too tall.
> They also look to me as if they were hand made from SOMMs??
>
> http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-8-80-speed-4MB-9chip-1024K-/130919854574?pt=LH_DefaultDomain_0&hash=item1e7b6e71ee
> http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-8-80-speed-9chip-1024K-/200929540743?pt=LH_DefaultDomain_0&hash=item2ec8557a87
> http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-7-70-speed-9chip-1024K-/200929432147?pt=LH_DefaultDomain_0&hash=item2ec853d253
> There are scads of 256ks.
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Hi, Doug,
> >
> > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> >
> > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> >
> > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> >
> > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> >
> > Phil
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > >
> > > Thanks very much!
> > > Does 8 or 9 bit (error corrected?) matter?
> > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > Then I see 3 chip horizontal mounted chips.
> > > The original parts I have (256K) have 2 chips horizontal.
> > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > So there is nothing else "custom" about the grid memories
> > > other than the form factor? I sure hoped the pin out wasn't
> > > custom.
> > >
> > > Ebay has some 1MB parts.
> > > Also saw some at ABC Resellers.
> > >
> > > I tried to make some 1MB simms into sipps and failed miserably
> > > and I'm a fairly decent technician.  Argh.
> > >
> > > I just saw a design for the apple GS that mounted 4 dimms
> > > on a 1M DIP board... so they were able to get the schematic
> > > for those SIMMs to lash them up to the DIP pinouts.
> > > Your envisioned retrofit shouldn't be any harder.
> > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > Might it be that one of those old 72 pin carriers of
> > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > over)?  That would perhaps be an even cleaner installation.
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > >
> > > > Hi,
> > > >
> > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > >
> > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > >
> > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > >
> > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > >
> > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > >
> > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > >
> > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > >
> > > > Anyway, I hope that helps you with your SIPP search.
> > > >
> > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > >
> > > > Phil
> > > >
> > >
> >
>

Yahoo! Message number: 2715
Date: Wed, 7 Aug 2013 12:23:28 -0700
From: Josh Dersch
Subject: Re: [RuGRiD-Laptop] Re: GRiD 1530 SIPP specifics...
text/plain; charset=windows-1252

I have a 1537 (TEMPEST-rated 1530) that's only good for parts at the moment
(and I've since found a working 1537 so I no longer need it).  I don't have
the time to crack it open and pull the SIPPs out (it's quite a pain to
open), but if anyone wants to cover shipping + a few bucks for the machine,
let me know.  I believe it has 4MB installed.

- Josh

On Wed, Aug 7, 2013 at 11:06 AM, jeriddian <Jeriddian@...> wrote:

> **
>
>
> Yeah, you're right. They are too tall for the 1530. But they do look like
> originals. Your search is similar to mine. Scads of 256K's. No 1Mb's.
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...>
> wrote:
> >
> >
> > Well the sets of 4MB total SIPPS on ebay are too tall.
> > They also look to me as if they were hand made from SOMMs??
> >
> >
> http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-8-80-speed-4MB-9chip-1024K-/130919854574?pt=LH_DefaultDomain_0&hash=item1e7b6e71ee
> >
> http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-8-80-speed-9chip-1024K-/200929540743?pt=LH_DefaultDomain_0&hash=item2ec8557a87
> >
> http://www.ebay.com/itm/Rare-SIPP-Memory-Stick-30-pin-1MB-Vintage-RAM-7-70-speed-9chip-1024K-/200929432147?pt=LH_DefaultDomain_0&hash=item2ec853d253
> > There are scads of 256ks.
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Hi, Doug,
> > >
> > > It doesn't seem to matter whether they are error corrected or not.
> Either the 2-chip or 8 chip (non-error corrected), or the error corrected
> (3-chip or 9-chip) versions have worked for me in the computer, though not
> mixed of course. Use one type or the other, not both at the same time, but
> I'm sure you realize that. There are no other "custom" aspects to the
> sticks that I know. The pin out is standard and is the same as for the
> SIMM's.
> > >
> > > Thanks for the tip on the locations for those 1Mb SIPP's. I may have
> to look at those. I also looked into trying to solder pins onto SIMM's and
> had the same miserable luck. You would likely have to have some very
> special apparatus to successfully do that, unfortunately.
> > >
> > > I would like to get a look at that schematic you mentioned. I don't
> know about using the 72 pin carrier, though. of the converters I saw, the
> 72 pin side was on the computer end. I'm not aware of the conversion being
> down the other way around, but I may be wrong about that. But if that does
> exit, then definitely there might be away to do it. I don;t know if you
> could fit a 72 pin stick inside the computer.
> > >
> > > One of things I always wanted to investigate was if the computer would
> recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder
> if the hardware was made available, if the software would pick it up. It
> can pick it up if you had a 1535 with the expansion tray which allowed you
> to a memory expansion card to the computer. I just wonder if there was a
> way we could do it through the original connections.
> > >
> > > Phil
> > >
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@>
> wrote:
> > > >
> > > >
> > > > Thanks very much!
> > > > Does 8 or 9 bit (error corrected?) matter?
> > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > Then I see 3 chip horizontal mounted chips.
> > > > The original parts I have (256K) have 2 chips horizontal.
> > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > So there is nothing else "custom" about the grid memories
> > > > other than the form factor? I sure hoped the pin out wasn't
> > > > custom.
> > > >
> > > > Ebay has some 1MB parts.
> > > > Also saw some at ABC Resellers.
> > > >
> > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > and I'm a fairly decent technician. Argh.
> > > >
> > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > on a 1M DIP board... so they were able to get the schematic
> > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > Your envisioned retrofit shouldn't be any harder.
> > > > Good idea. Much better than adapting 8 single 1MB DIMMs.
> > > > Might it be that one of those old 72 pin carriers of
> > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > over)? That would perhaps be an even cleaner installation.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@>
> wrote:
> > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > The SIPP characteristics are that they can only be either 256K or
> 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the
> ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most
> common.
> > > > >
> > > > > Another factor you must consider is the sticks must be low profile
> and have very little of the PC board material extending beyond the row of
> pins on either side (no wings). The high profile sticks usually have eight
> or nine chips on them, arranged so the long axis of the chips is vertical.
> You cannot use these well as they are too high for the space requirement
> and will push the bezel of the computer up unacceptably. They don't fit.
> > > > >
> > > > > These are SIPP sticks, and they are therefore 8 bit memory sticks.
> The computer is a 32 bit processor computer, thus you are required to have
> either four or eight sticks (multiples of 32 bits). Thus your choices are 1
> Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > >
> > > > > If you use only four high profile sticks, you would have to place
> them in the 1,3,5,7 positions (basically alternating the rows, and then
> slightly bend them down at an angle to make them fit, but I wouldn't
> recommend it.
> > > > >
> > > > > The low profile sticks usually have only two or three chips on
> them, and the long axis of the chips is horizontal. This makes the height
> of the stick no more than about 5/8" and will allow the stick to fit under
> the bezel.
> > > > >
> > > > > Similarly, the sticks should not have wide wings, used to snap
> them into place in a type of holding apparatus, as that would have the
> stick interfere with the video card on the left and the system light bank
> on the right. The width of the stick horizontally should be no greater that
> the width of the pin row plus about an eighth of an inch on each side or so.
> > > > >
> > > > > There are still a fair number of 256K SIPP's out there, but the 1
> MB sticks are getting rarer than chicken's teeth. I have been wanting to
> play with the concept of adapting two 4 Mb SIMMs, which are still pretty
> common, but I need a schematic of a circuit that would adapt the 4 Mb stick
> to fit four of the rows of the memory stick inserts on the computer. I know
> this has been done before by a company in the past, but I cannot find them
> any more, likely they are out of business. Something similar was done to
> adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for
> this particular purpose if anyone know of a someone who could design that.
> > > > >
> > > > > Anyway, I hope that helps you with your SIPP search.
> > > > >
> > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > >
> > > > > Phil
> > > > >
> > > >
> > >
> >
>
>
>

Yahoo! Message number: 2716
Date: Thu, 08 Aug 2013 22:25:48 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

Here's the IIGS memory card mod that is similar in concept
to moding the GRID.
http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Hi, Doug,
>
> It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
>
> Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
>
> I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
>
> One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
>
> Phil
>
>
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> >
> > Thanks very much!
> > Does 8 or 9 bit (error corrected?) matter?
> > I see a lot of 9 chip parts, some are tall, some are shorter.
> > Then I see 3 chip horizontal mounted chips.
> > The original parts I have (256K) have 2 chips horizontal.
> > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > So there is nothing else "custom" about the grid memories
> > other than the form factor? I sure hoped the pin out wasn't
> > custom.
> >
> > Ebay has some 1MB parts.
> > Also saw some at ABC Resellers.
> >
> > I tried to make some 1MB simms into sipps and failed miserably
> > and I'm a fairly decent technician.  Argh.
> >
> > I just saw a design for the apple GS that mounted 4 dimms
> > on a 1M DIP board... so they were able to get the schematic
> > for those SIMMs to lash them up to the DIP pinouts.
> > Your envisioned retrofit shouldn't be any harder.
> > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > Might it be that one of those old 72 pin carriers of
> > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > over)?  That would perhaps be an even cleaner installation.
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > >
> > > Hi,
> > >
> > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > >
> > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > >
> > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > >
> > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > >
> > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > >
> > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > >
> > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > >
> > > Anyway, I hope that helps you with your SIPP search.
> > >
> > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > >
> > > Phil
> > >
> >
>

Yahoo! Message number: 2717
Date: Thu, 08 Aug 2013 23:57:26 -0000
From: "jeriddian"
Subject: Re: GRiD 1530 SIPP specifics...

Thanks, Doug.

I've downloaded the schematic and can see the connections. The thing is I have to figure out though is if I can do the same thing on the Grid. The problem I have is this adaptation on the Apple gIIs has a memory card which is apparently connected to the bus of the computer. In the Grid, that won't be the case. The memory lines are directly accessed by the CPU. So although I can get a good idea of what pins to connect on the 4Mb SIMM, which pins I use on the motherboard of the Grid is still not clear to me. Hopefully I can get a more specific schematic which addresses this problem more directly, but I will try and find the schematic of the Grid motherboard in the hardware manuals and try to figure out how to make those connections.........when I have time, anyway.

Thanks, Again, Doug. I'll bet you Mike Brutman might know how to do this though.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
>
> Here's the IIGS memory card mod that is similar in concept
> to moding the GRID.
> http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Hi, Doug,
> >
> > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> >
> > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> >
> > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> >
> > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> >
> > Phil
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > >
> > > Thanks very much!
> > > Does 8 or 9 bit (error corrected?) matter?
> > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > Then I see 3 chip horizontal mounted chips.
> > > The original parts I have (256K) have 2 chips horizontal.
> > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > So there is nothing else "custom" about the grid memories
> > > other than the form factor? I sure hoped the pin out wasn't
> > > custom.
> > >
> > > Ebay has some 1MB parts.
> > > Also saw some at ABC Resellers.
> > >
> > > I tried to make some 1MB simms into sipps and failed miserably
> > > and I'm a fairly decent technician.  Argh.
> > >
> > > I just saw a design for the apple GS that mounted 4 dimms
> > > on a 1M DIP board... so they were able to get the schematic
> > > for those SIMMs to lash them up to the DIP pinouts.
> > > Your envisioned retrofit shouldn't be any harder.
> > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > Might it be that one of those old 72 pin carriers of
> > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > over)?  That would perhaps be an even cleaner installation.
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > >
> > > > Hi,
> > > >
> > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > >
> > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > >
> > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > >
> > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > >
> > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > >
> > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > >
> > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > >
> > > > Anyway, I hope that helps you with your SIPP search.
> > > >
> > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > >
> > > > Phil
> > > >
> > >
> >
>

Yahoo! Message number: 2718
Date: Fri, 09 Aug 2013 01:31:04 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

Agreed.
What all is there? 8bits data, some address (at least 1MB worth),
select or enables... Can't be too much to it.
Some decode on the MB must select the odd/even rows of SIPPs.
Hmmm.  Might take a few other guesses but it can't be much
more than what's defined in the SIPP pinouts.
Probably also a similar scheme to other 386 multi-SIPP motherboards.
So perhaps the info could be gleaned from around the web
if someone here doesn't already know.

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> Thanks, Doug.
>
> I've downloaded the schematic and can see the connections. The thing is I have to figure out though is if I can do the same thing on the Grid. The problem I have is this adaptation on the Apple gIIs has a memory card which is apparently connected to the bus of the computer. In the Grid, that won't be the case. The memory lines are directly accessed by the CPU. So although I can get a good idea of what pins to connect on the 4Mb SIMM, which pins I use on the motherboard of the Grid is still not clear to me. Hopefully I can get a more specific schematic which addresses this problem more directly, but I will try and find the schematic of the Grid motherboard in the hardware manuals and try to figure out how to make those connections.........when I have time, anyway.
>
> Thanks, Again, Doug. I'll bet you Mike Brutman might know how to do this though.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> >
> > Here's the IIGS memory card mod that is similar in concept
> > to moding the GRID.
> > http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Hi, Doug,
> > >
> > > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> > >
> > > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> > >
> > > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> > >
> > > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> > >
> > > Phil
> > >
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > >
> > > >
> > > > Thanks very much!
> > > > Does 8 or 9 bit (error corrected?) matter?
> > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > Then I see 3 chip horizontal mounted chips.
> > > > The original parts I have (256K) have 2 chips horizontal.
> > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > So there is nothing else "custom" about the grid memories
> > > > other than the form factor? I sure hoped the pin out wasn't
> > > > custom.
> > > >
> > > > Ebay has some 1MB parts.
> > > > Also saw some at ABC Resellers.
> > > >
> > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > and I'm a fairly decent technician.  Argh.
> > > >
> > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > on a 1M DIP board... so they were able to get the schematic
> > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > Your envisioned retrofit shouldn't be any harder.
> > > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > > Might it be that one of those old 72 pin carriers of
> > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > over)?  That would perhaps be an even cleaner installation.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > > >
> > > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > > >
> > > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > > 
> > > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > > >
> > > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > > >
> > > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > > >
> > > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > > >
> > > > > Anyway, I hope that helps you with your SIPP search.
> > > > >
> > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > >
> > > > > Phil
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2719
Date: Fri, 09 Aug 2013 01:49:19 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

Did you try the SIMM to SIPP conversion method shown
in the Photos section (SIPP Upgrade)?
I did not; I actually tried to move the whole pins to the SIMM.
I may give it another try using the method shown.
The pins will be a little short but the alignment will be great.
Maybe not so strong, but they only have to go in once... if
done right...

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
>
> Here's the IIGS memory card mod that is similar in concept
> to moding the GRID.
> http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > Hi, Doug,
> >
> > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> >
> > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> > 
> > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> >
> > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> >
> > Phil
> >
> >
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > >
> > > Thanks very much!
> > > Does 8 or 9 bit (error corrected?) matter?
> > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > Then I see 3 chip horizontal mounted chips.
> > > The original parts I have (256K) have 2 chips horizontal.
> > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > So there is nothing else "custom" about the grid memories
> > > other than the form factor? I sure hoped the pin out wasn't
> > > custom.
> > >
> > > Ebay has some 1MB parts.
> > > Also saw some at ABC Resellers.
> > >
> > > I tried to make some 1MB simms into sipps and failed miserably
> > > and I'm a fairly decent technician.  Argh.
> > >
> > > I just saw a design for the apple GS that mounted 4 dimms
> > > on a 1M DIP board... so they were able to get the schematic
> > > for those SIMMs to lash them up to the DIP pinouts.
> > > Your envisioned retrofit shouldn't be any harder.
> > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > Might it be that one of those old 72 pin carriers of
> > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > over)?  That would perhaps be an even cleaner installation.
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > >
> > > > Hi,
> > > >
> > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > >
> > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > >
> > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > >
> > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > >
> > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > >
> > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > >
> > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > >
> > > > Anyway, I hope that helps you with your SIPP search.
> > > >
> > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > >
> > > > Phil
> > > >
> > >
> >
>

Yahoo! Message number: 2720
Date: Sun, 11 Aug 2013 00:35:25 -0000
From: "Andrea"
Subject: Re: GRiD 1530 SIPP specifics...

Doug, my mod to convert Simm module to Sipp don't work. The conversion method is fine, i converted four Simm module in an hour of work the alignment is perfect no problem with the shorter pin. The Simm module are litlle bit longer so you need to cut to fill in the Grid.  At the start up the post is fine told me 8mbyte but after few minutes the computer hang up. I don't remember which combination of simm module i used
Andrea, Italy
--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
>
> Did you try the SIMM to SIPP conversion method shown
> in the Photos section (SIPP Upgrade)?
> I did not; I actually tried to move the whole pins to the SIMM.
> I may give it another try using the method shown.
> The pins will be a little short but the alignment will be great.
> Maybe not so strong, but they only have to go in once... if
> done right...
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> >
> > Here's the IIGS memory card mod that is similar in concept
> > to moding the GRID.
> > http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > >
> > > Hi, Doug,
> > >
> > > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> > >
> > > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> > >
> > > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> > >
> > > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> > >
> > > Phil
> > >
> > >
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > >
> > > >
> > > > Thanks very much!
> > > > Does 8 or 9 bit (error corrected?) matter?
> > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > Then I see 3 chip horizontal mounted chips.
> > > > The original parts I have (256K) have 2 chips horizontal.
> > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > So there is nothing else "custom" about the grid memories
> > > > other than the form factor? I sure hoped the pin out wasn't
> > > > custom.
> > > >
> > > > Ebay has some 1MB parts.
> > > > Also saw some at ABC Resellers.
> > > >
> > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > and I'm a fairly decent technician.  Argh.
> > > >
> > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > on a 1M DIP board... so they were able to get the schematic
> > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > Your envisioned retrofit shouldn't be any harder.
> > > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > > Might it be that one of those old 72 pin carriers of
> > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > over)?  That would perhaps be an even cleaner installation.
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > > >
> > > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > > >
> > > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > >
> > > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > > >
> > > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > > >
> > > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > > >
> > > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > > >
> > > > > Anyway, I hope that helps you with your SIPP search.
> > > > >
> > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > >
> > > > > Phil
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2721
Date: Sun, 11 Aug 2013 01:50:34 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

Thanks for the heads up!
Bummer!At least we have your pictures, one pair has a -6 (60ns?)
and a pair have -70.  Perhaps this didn't work because they
weren't a matched set?
Anyone?

--- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@...> wrote:
>
> Doug, my mod to convert Simm module to Sipp don't work. The conversion method is fine, i converted four Simm module in an hour of work the alignment is perfect no problem with the shorter pin. The Simm module are litlle bit longer so you need to cut to fill in the Grid.  At the start up the post is fine told me 8mbyte but after few minutes the computer hang up. I don't remember which combination of simm module i used
> Andrea, Italy
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> >
> > Did you try the SIMM to SIPP conversion method shown
> > in the Photos section (SIPP Upgrade)?
> > I did not; I actually tried to move the whole pins to the SIMM.
> > I may give it another try using the method shown.
> > The pins will be a little short but the alignment will be great.
> > Maybe not so strong, but they only have to go in once... if
> > done right...
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > >
> > > Here's the IIGS memory card mod that is similar in concept
> > > to moding the GRID.
> > > http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > >
> > > > Hi, Doug,
> > > >
> > > > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> > > >
> > > > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> > > >
> > > > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> > > >
> > > > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> > > >
> > > > Phil
> > > >
> > > >
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > > >
> > > > > 
> > > > > Thanks very much!
> > > > > Does 8 or 9 bit (error corrected?) matter?
> > > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > > Then I see 3 chip horizontal mounted chips.
> > > > > The original parts I have (256K) have 2 chips horizontal.
> > > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > > So there is nothing else "custom" about the grid memories
> > > > > other than the form factor? I sure hoped the pin out wasn't
> > > > > custom.
> > > > >
> > > > > Ebay has some 1MB parts.
> > > > > Also saw some at ABC Resellers.
> > > > > 
> > > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > > and I'm a fairly decent technician.  Argh.
> > > > >
> > > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > > on a 1M DIP board... so they were able to get the schematic
> > > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > > Your envisioned retrofit shouldn't be any harder.
> > > > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > > > Might it be that one of those old 72 pin carriers of
> > > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > > over)?  That would perhaps be an even cleaner installation.
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > >
> > > > > > Hi,
> > > > > >
> > > > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > > > >
> > > > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > > > >
> > > > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > > >
> > > > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > > > >
> > > > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > > > >
> > > > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > > > >
> > > > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > > > >
> > > > > > Anyway, I hope that helps you with your SIPP search.
> > > > > >
> > > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > > >
> > > > > > Phil
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2722
Date: Sun, 11 Aug 2013 05:31:43 -0000
From: "jeriddian"
Subject: Re: GRiD 1530 SIPP specifics...

I would have to agree with that. I'll bet the mismatch in speeds probably did you in, Andrea.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> Thanks for the heads up!
> Bummer!At least we have your pictures, one pair has a -6 (60ns?)
> and a pair have -70.  Perhaps this didn't work because they
> weren't a matched set?
> Anyone?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> >
> > Doug, my mod to convert Simm module to Sipp don't work. The conversion method is fine, i converted four Simm module in an hour of work the alignment is perfect no problem with the shorter pin. The Simm module are litlle bit longer so you need to cut to fill in the Grid.  At the start up the post is fine told me 8mbyte but after few minutes the computer hang up. I don't remember which combination of simm module i used
> > Andrea, Italy
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > >
> > > Did you try the SIMM to SIPP conversion method shown
> > > in the Photos section (SIPP Upgrade)?
> > > I did not; I actually tried to move the whole pins to the SIMM.
> > > I may give it another try using the method shown.
> > > The pins will be a little short but the alignment will be great.
> > > Maybe not so strong, but they only have to go in once... if
> > > done right...
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > >
> > > >
> > > > Here's the IIGS memory card mod that is similar in concept
> > > > to moding the GRID.
> > > > http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > >
> > > > > Hi, Doug,
> > > > >
> > > > > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> > > > > 
> > > > > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> > > > >
> > > > > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> > > > >
> > > > > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> > > > >
> > > > > Phil
> > > > >
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > > > >
> > > > > >
> > > > > > Thanks very much!
> > > > > > Does 8 or 9 bit (error corrected?) matter?
> > > > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > > > Then I see 3 chip horizontal mounted chips.
> > > > > > The original parts I have (256K) have 2 chips horizontal.
> > > > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > > > So there is nothing else "custom" about the grid memories
> > > > > > other than the form factor? I sure hoped the pin out wasn't
> > > > > > custom.
> > > > > >
> > > > > > Ebay has some 1MB parts.
> > > > > > Also saw some at ABC Resellers.
> > > > > >
> > > > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > > > and I'm a fairly decent technician.  Argh.
> > > > > >
> > > > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > > > on a 1M DIP board... so they were able to get the schematic
> > > > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > > > Your envisioned retrofit shouldn't be any harder.
> > > > > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > > > > Might it be that one of those old 72 pin carriers of
> > > > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > > > over)?  That would perhaps be an even cleaner installation.
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > >
> > > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > > > > >
> > > > > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > > > > >
> > > > > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > > > >
> > > > > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > > > > >
> > > > > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > > > > >
> > > > > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > > > > >
> > > > > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > > > > >
> > > > > > > Anyway, I hope that helps you with your SIPP search.
> > > > > > >
> > > > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2723
Date: Mon, 12 Aug 2013 02:20:25 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

I guess it would be wise, also, if I were to try this again, to also
go with confirmed tested SIMMs, as I have no SIMM MB to do my own test with.

--- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@...> wrote:
>
> I would have to agree with that. I'll bet the mismatch in speeds probably did you in, Andrea.
>
> Phil
>
> --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> >
> > Thanks for the heads up!
> > Bummer!At least we have your pictures, one pair has a -6 (60ns?)
> > and a pair have -70.  Perhaps this didn't work because they
> > weren't a matched set?
> > Anyone?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > >
> > > Doug, my mod to convert Simm module to Sipp don't work. The conversion method is fine, i converted four Simm module in an hour of work the alignment is perfect no problem with the shorter pin. The Simm module are litlle bit longer so you need to cut to fill in the Grid.  At the start up the post is fine told me 8mbyte but after few minutes the computer hang up. I don't remember which combination of simm module i used
> > > Andrea, Italy
> > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > >
> > > >
> > > > Did you try the SIMM to SIPP conversion method shown
> > > > in the Photos section (SIPP Upgrade)?
> > > > I did not; I actually tried to move the whole pins to the SIMM.
> > > > I may give it another try using the method shown.
> > > > The pins will be a little short but the alignment will be great.
> > > > Maybe not so strong, but they only have to go in once... if
> > > > done right...
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > > >
> > > > >
> > > > > Here's the IIGS memory card mod that is similar in concept
> > > > > to moding the GRID.
> > > > > http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > >
> > > > > > Hi, Doug,
> > > > > >
> > > > > > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> > > > > >
> > > > > > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> > > > > >
> > > > > > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> > > > > >
> > > > > > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> > > > > >
> > > > > > Phil
> > > > > >
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > > > > >
> > > > > > >
> > > > > > > Thanks very much!
> > > > > > > Does 8 or 9 bit (error corrected?) matter?
> > > > > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > > > > Then I see 3 chip horizontal mounted chips.
> > > > > > > The original parts I have (256K) have 2 chips horizontal.
> > > > > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > > > > So there is nothing else "custom" about the grid memories
> > > > > > > other than the form factor? I sure hoped the pin out wasn't
> > > > > > > custom.
> > > > > > >
> > > > > > > Ebay has some 1MB parts.
> > > > > > > Also saw some at ABC Resellers.
> > > > > > >
> > > > > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > > > > and I'm a fairly decent technician.  Argh.
> > > > > > >
> > > > > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > > > > on a 1M DIP board... so they were able to get the schematic
> > > > > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > > > > Your envisioned retrofit shouldn't be any harder.
> > > > > > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > > > > > Might it be that one of those old 72 pin carriers of
> > > > > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > > > > over)?  That would perhaps be an even cleaner installation.
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > >
> > > > > > > >
> > > > > > > > Hi,
> > > > > > > >
> > > > > > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > > > > > >
> > > > > > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > > > > > >
> > > > > > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > > > > >
> > > > > > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > > > > > >
> > > > > > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > > > > > >
> > > > > > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > > > > > >
> > > > > > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > > > > > >
> > > > > > > > Anyway, I hope that helps you with your SIPP search.
> > > > > > > >
> > > > > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > > > > >
> > > > > > > > Phil
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2724
Date: Mon, 12 Aug 2013 03:06:29 -0000
From: "jeriddian"
Subject: Re: GRiD 1530 SIPP specifics...

You would probably have to buy an old computer that used them, an early DOS or Windows 3.1 machine from the late 1980's or so. You could probably pick one up on ebay for about $100, if you could find one. But I don't know if you want to spend that kind of money just for that purpose. There are some type of hardware testers out there that I believe could test memory sticks. I remember seeing them. Find them? That's the trick.

I wish I could tell how to create a adaptation for my idea. I think it would involve using pins on connectors to push into the SIPP socket pins on the motherboard and have these connectors attached to a small piece of PC board that would lock into place by being attached to the four corner pin connectors. That would be 240 connections. I would likely have to have some chip on board to sort out the extra two bits so as to adapt the incoming connections from the 4MB SIMM's through the interpreter chip and then to the connections to the MB. I can easily envision the physical architecture. It's the schematic of doing it that I don't have, nor what chips would be used to do it. I was hoping there was some sort of expertise in one of our members that could design that. I've done PC board work, put together power supplies, oscillator circuits, used op amps for various purposes, so doing the physical construction is something I think I could do. I've etched PC boards before. But I don't have enough engineering background to design that particular circuit.

Phil

--- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@...> wrote:
>
> I guess it would be wise, also, if I were to try this again, to also
> go with confirmed tested SIMMs, as I have no SIMM MB to do my own test with.
>
> --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> >
> > I would have to agree with that. I'll bet the mismatch in speeds probably did you in, Andrea.
> >
> > Phil
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > > Thanks for the heads up!
> > > Bummer!At least we have your pictures, one pair has a -6 (60ns?)
> > > and a pair have -70.  Perhaps this didn't work because they
> > > weren't a matched set?
> > > Anyone?
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > > >
> > > > Doug, my mod to convert Simm module to Sipp don't work. The conversion method is fine, i converted four Simm module in an hour of work the alignment is perfect no problem with the shorter pin. The Simm module are litlle bit longer so you need to cut to fill in the Grid.  At the start up the post is fine told me 8mbyte but after few minutes the computer hang up. I don't remember which combination of simm module i used
> > > > Andrea, Italy
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > > >
> > > > >
> > > > > Did you try the SIMM to SIPP conversion method shown
> > > > > in the Photos section (SIPP Upgrade)?
> > > > > I did not; I actually tried to move the whole pins to the SIMM.
> > > > > I may give it another try using the method shown.
> > > > > The pins will be a little short but the alignment will be great.
> > > > > Maybe not so strong, but they only have to go in once... if
> > > > > done right...
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > > > >
> > > > > >
> > > > > > Here's the IIGS memory card mod that is similar in concept
> > > > > > to moding the GRID.
> > > > > > http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > >
> > > > > > > Hi, Doug,
> > > > > > >
> > > > > > > It doesn't seem to matter whether they are error corrected or not. Either the 2-chip or 8 chip (non-error corrected), or the error corrected (3-chip or 9-chip) versions have worked for me in the computer, though not mixed of course. Use one type or the other, not both at the same time, but I'm sure you realize that. There are no other "custom" aspects to the sticks that I know. The pin out is standard and is the same as for the SIMM's.
> > > > > > >
> > > > > > > Thanks for the tip on the locations for those 1Mb SIPP's. I may have to look at those. I also looked into trying to solder pins onto SIMM's and had the same miserable luck. You would likely have to have some very special apparatus to successfully do that, unfortunately.
> > > > > > >
> > > > > > > I would like to get a look at that schematic you mentioned. I don't know about using the 72 pin carrier, though. of the converters I saw, the 72 pin side was on the computer end. I'm not aware of the conversion being down the other way around, but I may be wrong about that. But if that does exit, then definitely there might be away to do it. I don;t know if you could fit a 72 pin stick inside the computer.
> > > > > > >
> > > > > > > One of things I always wanted to investigate was if the computer would recognize 16 Mb. That is the maximum that DOS would recognize, so I wonder if the hardware was made available, if the software would pick it up. It can pick it up if you had a 1535 with the expansion tray which allowed you to a memory expansion card to the computer. I just wonder if there was a way we could do it through the original connections.
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > > > > > >
> > > > > > > >
> > > > > > > > Thanks very much!
> > > > > > > > Does 8 or 9 bit (error corrected?) matter?
> > > > > > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > > > > > Then I see 3 chip horizontal mounted chips.
> > > > > > > > The original parts I have (256K) have 2 chips horizontal.
> > > > > > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > > > > > So there is nothing else "custom" about the grid memories
> > > > > > > > other than the form factor? I sure hoped the pin out wasn't
> > > > > > > > custom.
> > > > > > > >
> > > > > > > > Ebay has some 1MB parts.
> > > > > > > > Also saw some at ABC Resellers.
> > > > > > > >
> > > > > > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > > > > > and I'm a fairly decent technician.  Argh.
> > > > > > > >
> > > > > > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > > > > > on a 1M DIP board... so they were able to get the schematic
> > > > > > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > > > > > Your envisioned retrofit shouldn't be any harder.
> > > > > > > > Good idea.  Much better than adapting 8 single 1MB DIMMs.
> > > > > > > > Might it be that one of those old 72 pin carriers of
> > > > > > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > > > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > > > > > over)?  That would perhaps be an even cleaner installation.
> > > > > > > >
> > > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@> wrote:
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Hi,
> > > > > > > > >
> > > > > > > > > The SIPP characteristics are that they can only be either 256K or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most common.
> > > > > > > > >
> > > > > > > > > Another factor you must consider is the sticks must be low profile and have very little of the PC board material extending beyond the row of pins on either side (no wings). The high profile sticks usually have eight or nine chips on them, arranged so the long axis of the chips is vertical. You cannot use these well as they are too high for the space requirement and will push the bezel of the computer up unacceptably. They don't fit.
> > > > > > > > >
> > > > > > > > > These are SIPP sticks, and they are therefore 8 bit memory sticks. The computer is a 32 bit processor computer, thus you are required to have either four or eight sticks (multiples of 32 bits). Thus your choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > > > > > >
> > > > > > > > > If you use only four high profile sticks, you would have to place them in the 1,3,5,7 positions (basically alternating the rows, and then slightly bend them down at an angle to make them fit, but I wouldn't recommend it.
> > > > > > > > >
> > > > > > > > > The low profile sticks usually have only two or three chips on them, and the long axis of the chips is horizontal. This makes the height of the stick no more than about 5/8" and will allow the stick to fit under the bezel.
> > > > > > > > >
> > > > > > > > > Similarly, the sticks should not have wide wings, used to snap them into place in a type of holding apparatus, as that would have the stick interfere with the video card on the left and the system light bank on the right. The width of the stick horizontally should be no greater that the width of the pin row plus about an eighth of an inch on each side or so.
> > > > > > > > >
> > > > > > > > > There are still a fair number of 256K SIPP's out there, but the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting to play with the concept of adapting two 4 Mb SIMMs, which are still pretty common, but I need a schematic of a circuit that would adapt the 4 Mb stick to fit four of the rows of the memory stick inserts on the computer. I know this has been done before by a company in the past, but I cannot find them any more, likely they are out of business. Something similar was done to adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for this particular purpose if anyone know of a someone who could design that.
> > > > > > > > >
> > > > > > > > > Anyway, I hope that helps you with your SIPP search.
> > > > > > > > >
> > > > > > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > > > > > >
> > > > > > > > > Phil
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Yahoo! Message number: 2725
Date: Tue, 13 Aug 2013 13:35:54 +0200
From: Andrea Michele Cane
Subject: Re: [RuGRiD-Laptop] Re: GRiD 1530 SIPP specifics...
text/plain; charset=windows-1252

Hallo Doug, for your experiment  with sipp ram if you want i can send to
you for free my modified sipp module and simm module When you finish you
can send me back. Andrea
Il giorno 11/ago/2013 03:50, "DougCrawford" <touchetek@...> ha
scritto:

> **
>
>
> Thanks for the heads up!
> Bummer!At least we have your pictures, one pair has a -6 (60ns?)
> and a pair have -70. Perhaps this didn't work because they
> weren't a matched set?
> Anyone?
>
> --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@...> wrote:
> >
> > Doug, my mod to convert Simm module to Sipp don't work. The conversion
> method is fine, i converted four Simm module in an hour of work the
> alignment is perfect no problem with the shorter pin. The Simm module are
> litlle bit longer so you need to cut to fill in the Grid. At the start up
> the post is fine told me 8mbyte but after few minutes the computer hang up.
> I don't remember which combination of simm module i used
> > Andrea, Italy
> > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > >
> > >
> > > Did you try the SIMM to SIPP conversion method shown
> > > in the Photos section (SIPP Upgrade)?
> > > I did not; I actually tried to move the whole pins to the SIMM.
> > > I may give it another try using the method shown.
> > > The pins will be a little short but the alignment will be great.
> > > Maybe not so strong, but they only have to go in once... if
> > > done right...
> > >
> > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@>
> wrote:
> > > >
> > > >
> > > > Here's the IIGS memory card mod that is similar in concept
> > > > to moding the GRID.
> > > >
> http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@>
> wrote:
> > > > >
> > > > > Hi, Doug,
> > > > >
> > > > > It doesn't seem to matter whether they are error corrected or not.
> Either the 2-chip or 8 chip (non-error corrected), or the error corrected
> (3-chip or 9-chip) versions have worked for me in the computer, though not
> mixed of course. Use one type or the other, not both at the same time, but
> I'm sure you realize that. There are no other "custom" aspects to the
> sticks that I know. The pin out is standard and is the same as for the
> SIMM's.
> > > > >
> > > > > Thanks for the tip on the locations for those 1Mb SIPP's. I may
> have to look at those. I also looked into trying to solder pins onto SIMM's
> and had the same miserable luck. You would likely have to have some very
> special apparatus to successfully do that, unfortunately.
> > > > >
> > > > > I would like to get a look at that schematic you mentioned. I
> don't know about using the 72 pin carrier, though. of the converters I saw,
> the 72 pin side was on the computer end. I'm not aware of the conversion
> being down the other way around, but I may be wrong about that. But if that
> does exit, then definitely there might be away to do it. I don;t know if
> you could fit a 72 pin stick inside the computer.
> > > > >
> > > > > One of things I always wanted to investigate was if the computer
> would recognize 16 Mb. That is the maximum that DOS would recognize, so I
> wonder if the hardware was made available, if the software would pick it
> up. It can pick it up if you had a 1535 with the expansion tray which
> allowed you to a memory expansion card to the computer. I just wonder if
> there was a way we could do it through the original connections.
> > > > >
> > > > > Phil
> > > > >
> > > > >
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@>
> wrote:
> > > > > >
> > > > > >
> > > > > > Thanks very much!
> > > > > > Does 8 or 9 bit (error corrected?) matter?
> > > > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > > > Then I see 3 chip horizontal mounted chips.
> > > > > > The original parts I have (256K) have 2 chips horizontal.
> > > > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > > > So there is nothing else "custom" about the grid memories
> > > > > > other than the form factor? I sure hoped the pin out wasn't
> > > > > > custom.
> > > > > >
> > > > > > Ebay has some 1MB parts.
> > > > > > Also saw some at ABC Resellers.
> > > > > >
> > > > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > > > and I'm a fairly decent technician. Argh.
> > > > > >
> > > > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > > > on a 1M DIP board... so they were able to get the schematic
> > > > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > > > Your envisioned retrofit shouldn't be any harder.
> > > > > > Good idea. Much better than adapting 8 single 1MB DIMMs.
> > > > > > Might it be that one of those old 72 pin carriers of
> > > > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > > > over)? That would perhaps be an even cleaner installation.
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@>
> wrote:
> > > > > > >
> > > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > The SIPP characteristics are that they can only be either 256K
> or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually
> the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most
> common.
> > > > > > >
> > > > > > > Another factor you must consider is the sticks must be low
> profile and have very little of the PC board material extending beyond the
> row of pins on either side (no wings). The high profile sticks usually have
> eight or nine chips on them, arranged so the long axis of the chips is
> vertical. You cannot use these well as they are too high for the space
> requirement and will push the bezel of the computer up unacceptably. They
> don't fit.
> > > > > > >
> > > > > > > These are SIPP sticks, and they are therefore 8 bit memory
> sticks. The computer is a 32 bit processor computer, thus you are required
> to have either four or eight sticks (multiples of 32 bits). Thus your
> choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > > > >
> > > > > > > If you use only four high profile sticks, you would have to
> place them in the 1,3,5,7 positions (basically alternating the rows, and
> then slightly bend them down at an angle to make them fit, but I wouldn't
> recommend it.
> > > > > > >
> > > > > > > The low profile sticks usually have only two or three chips on
> them, and the long axis of the chips is horizontal. This makes the height
> of the stick no more than about 5/8" and will allow the stick to fit under
> the bezel.
> > > > > > >
> > > > > > > Similarly, the sticks should not have wide wings, used to snap
> them into place in a type of holding apparatus, as that would have the
> stick interfere with the video card on the left and the system light bank
> on the right. The width of the stick horizontally should be no greater that
> the width of the pin row plus about an eighth of an inch on each side or so.
> > > > > > >
> > > > > > > There are still a fair number of 256K SIPP's out there, but
> the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting
> to play with the concept of adapting two 4 Mb SIMMs, which are still pretty
> common, but I need a schematic of a circuit that would adapt the 4 Mb stick
> to fit four of the rows of the memory stick inserts on the computer. I know
> this has been done before by a company in the past, but I cannot find them
> any more, likely they are out of business. Something similar was done to
> adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for
> this particular purpose if anyone know of a someone who could design that.
> > > > > > >
> > > > > > > Anyway, I hope that helps you with your SIPP search.
> > > > > > >
> > > > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > > > >
> > > > > > > Phil
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
>
>

Yahoo! Message number: 2726
Date: Tue, 13 Aug 2013 17:55:09 -0000
From: "DougCrawford"
Subject: Re: GRiD 1530 SIPP specifics...

Kind offer! Thanks!
If I decide that will help I'll let you know.


--- In RuGRiD-Laptop@yahoogroups.com, Andrea Michele Cane <zentaro.cane@...> wrote:
>
> Hallo Doug, for your experiment  with sipp ram if you want i can send to
> you for free my modified sipp module and simm module When you finish you
> can send me back. Andrea
> Il giorno 11/ago/2013 03:50, "DougCrawford" <touchetek@...> ha
> scritto:
>
> > **
> >
> >
> > Thanks for the heads up!
> > Bummer!At least we have your pictures, one pair has a -6 (60ns?)
> > and a pair have -70. Perhaps this didn't work because they
> > weren't a matched set?
> > Anyone?
> >
> > --- In RuGRiD-Laptop@yahoogroups.com, "Andrea" <zentaro.cane@> wrote:
> > >
> > > Doug, my mod to convert Simm module to Sipp don't work. The conversion
> > method is fine, i converted four Simm module in an hour of work the
> > alignment is perfect no problem with the shorter pin. The Simm module are
> > litlle bit longer so you need to cut to fill in the Grid. At the start up
> > the post is fine told me 8mbyte but after few minutes the computer hang up.
> > I don't remember which combination of simm module i used
> > > Andrea, Italy
> > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@> wrote:
> > > >
> > > >
> > > > Did you try the SIMM to SIPP conversion method shown
> > > > in the Photos section (SIPP Upgrade)?
> > > > I did not; I actually tried to move the whole pins to the SIMM.
> > > > I may give it another try using the method shown.
> > > > The pins will be a little short but the alignment will be great.
> > > > Maybe not so strong, but they only have to go in once... if
> > > > done right...
> > > >
> > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@>
> > wrote:
> > > > >
> > > > >
> > > > > Here's the IIGS memory card mod that is similar in concept
> > > > > to moding the GRID.
> > > > >
> > http://damntechnology.blogspot.com/2010/09/apple-iigs-1mb-memory-expansion-to-4mb.html
> > > > >
> > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@>
> > wrote:
> > > > > >
> > > > > > Hi, Doug,
> > > > > >
> > > > > > It doesn't seem to matter whether they are error corrected or not.
> > Either the 2-chip or 8 chip (non-error corrected), or the error corrected
> > (3-chip or 9-chip) versions have worked for me in the computer, though not
> > mixed of course. Use one type or the other, not both at the same time, but
> > I'm sure you realize that. There are no other "custom" aspects to the
> > sticks that I know. The pin out is standard and is the same as for the
> > SIMM's.
> > > > > >
> > > > > > Thanks for the tip on the locations for those 1Mb SIPP's. I may
> > have to look at those. I also looked into trying to solder pins onto SIMM's
> > and had the same miserable luck. You would likely have to have some very
> > special apparatus to successfully do that, unfortunately.
> > > > > >
> > > > > > I would like to get a look at that schematic you mentioned. I
> > don't know about using the 72 pin carrier, though. of the converters I saw,
> > the 72 pin side was on the computer end. I'm not aware of the conversion
> > being down the other way around, but I may be wrong about that. But if that
> > does exit, then definitely there might be away to do it. I don;t know if
> > you could fit a 72 pin stick inside the computer.
> > > > > >
> > > > > > One of things I always wanted to investigate was if the computer
> > would recognize 16 Mb. That is the maximum that DOS would recognize, so I
> > wonder if the hardware was made available, if the software would pick it
> > up. It can pick it up if you had a 1535 with the expansion tray which
> > allowed you to a memory expansion card to the computer. I just wonder if
> > there was a way we could do it through the original connections.
> > > > > >
> > > > > > Phil
> > > > > >
> > > > > >
> > > > > >
> > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "DougCrawford" <touchetek@>
> > wrote:
> > > > > > >
> > > > > > >
> > > > > > > Thanks very much!
> > > > > > > Does 8 or 9 bit (error corrected?) matter?
> > > > > > > I see a lot of 9 chip parts, some are tall, some are shorter.
> > > > > > > Then I see 3 chip horizontal mounted chips.
> > > > > > > The original parts I have (256K) have 2 chips horizontal.
> > > > > > > I assume the 3 chips are 9 bit and the originals are 8 bit?
> > > > > > > So there is nothing else "custom" about the grid memories
> > > > > > > other than the form factor? I sure hoped the pin out wasn't
> > > > > > > custom.
> > > > > > >
> > > > > > > Ebay has some 1MB parts.
> > > > > > > Also saw some at ABC Resellers.
> > > > > > >
> > > > > > > I tried to make some 1MB simms into sipps and failed miserably
> > > > > > > and I'm a fairly decent technician. Argh.
> > > > > > >
> > > > > > > I just saw a design for the apple GS that mounted 4 dimms
> > > > > > > on a 1M DIP board... so they were able to get the schematic
> > > > > > > for those SIMMs to lash them up to the DIP pinouts.
> > > > > > > Your envisioned retrofit shouldn't be any harder.
> > > > > > > Good idea. Much better than adapting 8 single 1MB DIMMs.
> > > > > > > Might it be that one of those old 72 pin carriers of
> > > > > > > 2 or 4 30pin DIMMs might wire in even easier? And that the
> > > > > > > carrier would nestle in the SIPP spot (if the DIMMs are leaning
> > > > > > > over)? That would perhaps be an even cleaner installation.
> > > > > > >
> > > > > > > --- In RuGRiD-Laptop@yahoogroups.com, "jeriddian" <Jeriddian@>
> > wrote:
> > > > > > > >
> > > > > > > >
> > > > > > > > Hi,
> > > > > > > >
> > > > > > > > The SIPP characteristics are that they can only be either 256K
> > or 1Mb sticks. The should be no slower than 80 ms, I believe, and usually
> > the ones used are either 60 ms or 70 ms. 70 ms sticks seem to be the most
> > common.
> > > > > > > >
> > > > > > > > Another factor you must consider is the sticks must be low
> > profile and have very little of the PC board material extending beyond the
> > row of pins on either side (no wings). The high profile sticks usually have
> > eight or nine chips on them, arranged so the long axis of the chips is
> > vertical. You cannot use these well as they are too high for the space
> > requirement and will push the bezel of the computer up unacceptably. They
> > don't fit.
> > > > > > > >
> > > > > > > > These are SIPP sticks, and they are therefore 8 bit memory
> > sticks. The computer is a 32 bit processor computer, thus you are required
> > to have either four or eight sticks (multiples of 32 bits). Thus your
> > choices are 1 Mb, 2 Mb, 4 Mb, or 8 Mb of RAM for the computer.
> > > > > > > >
> > > > > > > > If you use only four high profile sticks, you would have to
> > place them in the 1,3,5,7 positions (basically alternating the rows, and
> > then slightly bend them down at an angle to make them fit, but I wouldn't
> > recommend it.
> > > > > > > >
> > > > > > > > The low profile sticks usually have only two or three chips on
> > them, and the long axis of the chips is horizontal. This makes the height
> > of the stick no more than about 5/8" and will allow the stick to fit under
> > the bezel.
> > > > > > > >
> > > > > > > > Similarly, the sticks should not have wide wings, used to snap
> > them into place in a type of holding apparatus, as that would have the
> > stick interfere with the video card on the left and the system light bank
> > on the right. The width of the stick horizontally should be no greater that
> > the width of the pin row plus about an eighth of an inch on each side or so.
> > > > > > > >
> > > > > > > > There are still a fair number of 256K SIPP's out there, but
> > the 1 MB sticks are getting rarer than chicken's teeth. I have been wanting
> > to play with the concept of adapting two 4 Mb SIMMs, which are still pretty
> > common, but I need a schematic of a circuit that would adapt the 4 Mb stick
> > to fit four of the rows of the memory stick inserts on the computer. I know
> > this has been done before by a company in the past, but I cannot find them
> > any more, likely they are out of business. Something similar was done to
> > adapt 30 pin SIMMs to 72 pin memory banks. I want something similar for
> > this particular purpose if anyone know of a someone who could design that.
> > > > > > > >
> > > > > > > > Anyway, I hope that helps you with your SIPP search.
> > > > > > > >
> > > > > > > > BTW, where did you find those 1 Mb SIPP's that were expensive?
> > > > > > > >
> > > > > > > > Phil
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> >
> >
>

Yahoo! Message number: 2727
Date: Thu, 22 Aug 2013 12:32:35 +0100 (BST)
From: Alessandro Aria
Subject: gridcase 1590
text/plain; charset=iso-8859-1

Ciao� guys a 1590 is for sale .
The price is very good!


http://www.youtube.com/watch?v=_Kv7AFXvvho&feature=g-upl�



http://annunci.ebay.it/annunci/computer-e-software/bari-annunci-bari/gridcase-1590/42478200

Yahoo! Message number: 2728
Date: Thu, 22 Aug 2013 12:35:53 +0100 (BST)
From: Alessandro Aria
Subject: I: GRIDCASE 1590
text/plain; charset=iso-8859-1

----- Messaggio inoltrato -----
Da: Alessandro Aria <alessandro.aria@yahoo.it>
A: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Inviato: Luned� 28 Gennaio 2013 20:55
Oggetto: GRIDCASE 1590



Hi guys,here I am again.


A GRIDCASE 1590 is for sale .

Hall the hardware is "TEMPEST CERTIFIED"
The connectors are produced by "GLENAIR" series 660-024NF
The�locking devices�and hinges are producer by "SOUTHCO"

Internally there is�a little board containing a pair of: IC operazional and one for BF audio,

connected to mother board;It would seem�to be�a small amply audio maybe for external
speakers.
Surprisingly,�on the top of�the�motherboard, as well��PROCESSOR�PENTIUM III, there are other IC's that�requiring�the surface�cooling .I�do not know�the function.

For now�is all...see you later.




http://www.ebay.it/itm/GRIDCASE-1590-/271145192818?pt=Retrocomputer&hash=item3f21834d72


Some foto


http://www.flickr.com/photos/prestazionidansia/sets/72157629181006050/

Alessandro. Stromboli Island

www.prestazionidansia.com

you tube "alex 2134"

Tnx

Yahoo! Message number: 2729
Date: Fri, 23 Aug 2013 14:04:36 -0000
From: "Androgenoide"
Subject: Re: gridcase 1590

That disappeared rather quickly.





--- In RuGRiD-Laptop@yahoogroups.com, Alessandro Aria <alessandro.aria@...> wrote:
>
> Ciao� guys a 1590 is for sale .
> The price is very good!
>
>
> http://www.youtube.com/watch?v=_Kv7AFXvvho&feature=g-upl�
>
>
>
> http://annunci.ebay.it/annunci/computer-e-software/bari-annunci-bari/gridcase-1590/42478200
>

Yahoo! Message number: 2730
Date: 07 Oct 2013 11:10:56 -0700
From:
Subject: RE: GRiDCASE 1537E information?

 Hello Josh,

I found a week ago the same GRiD Laptop...I have finally the 1537E working...

But I search for the hard drive carry...if you have a spare I like to hear from you...

I have a lot of picture`s and the connection from the power supply is not that hard too figure out..

Frits

Yahoo! Message number: 2731
Date:
From:
Subject: RE: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

Very nice pictures, Frits.  

 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn

 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 I've put some pictures up at:
 
 http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/
 
 The hard drive looks to be IDE. Thanks for any assistance!
 
 - Josh
 
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote:
 
 Hello there, Josh.
 I am not familiar with the 1537. Â It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector. Â By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn
 
 
 
 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch 
 To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
 
 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  
 
 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
 
 Thanks!
 Josh
 
 
 
 ------------------------------------
 
 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 

Yahoo! Message number: 2732
Date: 08 Oct 2013 19:59:47 -0700
From:
Subject: RE: Looking for DOS software
text/plain; charset=utf-8

there is a file on this site it builds a floppy to load the original 
 dos for the 1520   
 send me an email and i will send you a copy of a cd that will build
 you a copy of dos that will load on the 1520 
 and it builds image disks to set one up with the good stuff form 6.0 and 6.22
 and leave out the junk that can cause problems 
 wd8cyv at yahoo doot coN
 read the email address and fix the added mistakes
 send me a mailing address and wait a bit i am not home till about oct 25
 dave
 

---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, John,
 
 Fortunately, DOS is actually fairly simple in terms of its use. It depends on which version you are using (anywhere from ver. 3.2 to that last version which is 6.22. The manuals to each version can eb found for sale online (try ebay). There is a version 7, but it is limited and that was integrated into Windows 95). You can try this book I found- 
 
 http://www.alibris.com/booksearch.detail?invid=11575804273&browse=1&isbn=9781556156335&qsort=&page=1 http://www.alibris.com/booksearch.detail?invid=11575804273&browse=1&isbn=9781556156335&qsort=&page=1
 
 As to old software, you can google for all sorts of old DOS software out there. You may be able to find one that does what you are looking for.
 
 Best of luck to you.
 
 Phil
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, "johntmilw" <xraydelta1.jt@...> wrote:
 >
 > I recently acquired a nice working 1520 from ebay because I've always admired Grid's design, looks and exotic reputation. Mine has Lotus 1-2-3 and WordPerfect installed and they seem to work fine. The problem is, I know nothing about DOS... it's heyday was about a decade before my involvement with computers even began. 
 > 
 > Can anyone recommend a good primer on DOS - preferably online - for a total DOS newbie so I can least do more than just turn it on and off? Even just some short instructions on how to navigate around the computer would be helpful... I know, it's sad but true and I admit it... I don't know how to use a computer without a mouse!
 > 
 > Also, I'd like to install more programs on it eventually, like the famous "SPOC" program in the files area of this group, but again, I don't have a clue about how to do it. Right now the only path to getting files onto this machine is through the floppy drive... I have managed to format some old floppies on my Win 7 Thinkpad that the Grid seems to recognize.
 > 
 > Finally, and in particular, I would like to get a world time zone/daylight clock program to run on the Grid... did such a program ever exist, and how would I go about getting it after all these years? Are there any repositories of old & orphaned DOS programs on the web? I've looked at some torrent sites but came up empty.
 > 
 > Any help with these issues would be greatly appreciated.
 > 
 

Yahoo! Message number: 2733
Date: 09 Oct 2013 02:33:22 -0700
From:
Subject: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Very nice pictures, Frits.  

 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn

 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 I've put some pictures up at:
 
 http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/
 
 The hard drive looks to be IDE. Thanks for any assistance!
 
 - Josh
 
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote:
 
 Hello there, Josh.
 I am not familiar with the 1537. Â It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector. Â By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn
 
 
 
 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch 
 To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
 
 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  
 
 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
 
 Thanks!
 Josh
 
 
 
 ------------------------------------
 
 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 



 

Yahoo! Message number: 2734
Date: 12 Oct 2013 10:06:47 -0700
From:
Subject: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

Hello,
  
 Is there anyone how knows what for connector this is...is it an IDE connector...and what the are the connections
 is there a adapter cable for it...unfortunately I mis the hard disk for the GRiD 1537E..
 I leave a picture from of the connector on the form...
  
 Thanks in advance
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Very nice pictures, Frits.  

 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn

 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 I've put some pictures up at:
 
 http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/
 
 The hard drive looks to be IDE. Thanks for any assistance!
 
 - Josh
 
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote:
 
 Hello there, Josh.
 I am not familiar with the 1537. Â It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector. Â By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn
 
 
 
 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch 
 To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
 
 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  
 
 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
 
 Thanks!
 Josh
 
 
 
 ------------------------------------
 
 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 



 

 

Yahoo! Message number: 2735
Date: Sat, 12 Oct 2013 17:18:33 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] RE: GRiDCASE 1537E information?
text/plain; charset=iso-8859-1

Fritz,
Very good pictures!� I'm sorry, I don't have any information about the connector.� I wonder if you remove the special connector and use a standard IDE cable.� I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?� Something to try...
Good luck,
-Shawn





On Saturday, October 12, 2013 1:06 PM, "fritsp2007@yahoo.com" <fritsp2007@...> wrote:





Hello,
�
Is there anyone how knows what�for connector this is...is it an IDE connector...and what the are the connections
is there a adapter cable for it...unfortunately I�mis the hard disk for the GRiD 1537E..
I leave a picture from of the connector�on the form...
�
Thanks in advance
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
Yes,it runs on a `386SX..
I will put some pictures on the forum...�
�
Frits�


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Very nice pictures, Frits.�

Do you know what microprocessor in on the motherboard?� The outside of the 1537E looks like a 1520.� That would have a '286 microprocessor.� But, if I am not mistaken, the 1530 series uses the '386SX.
It looks to be in very good condition. :)
-Shawn



---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


�Hello Josh,
�
I found a week ago the same GRiD Laptop...I have finally the 1537E working...
But I search for the hard drive carry...if you have a spare I like to hear from you...
I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
�
Frits


---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:


I've put some pictures up at:

http://yahozna.dyndns.org/scratch/gridcase/1537/

The hard drive looks to be IDE.  Thanks for any assistance!

- Josh



--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz  wrote:
>>>>
>>>>Hello there, Josh.
>>>>I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
>>>>I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector?
>>>>Sorry I can't be much help. The 1537 is rare find.
>>>>Feel free to post pictures. :-)
>>>>-Shawn
>>>>
>>>>
>>>>
>>>>-------- Original message --------
>>>>Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>From: jadersch
>>>>To: RuGRiD-Laptop@yahoogroups.com
>>>>CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>
>>>>Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?). 
>>>>
>>>>It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
>>>>
>>>>Thanks!
>>>>Josh
>>>>
>>>>
>>>>
>>>>------------------------------------
>>>>
>>>>http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2736
Date: 12 Oct 2013 17:41:08 -0700
From:
Subject: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

Hi, Josh,
  
 This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This is not an IDE connector, which has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
  
 Phil
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Fritz,
Very good pictures!  I'm sorry, I don't have any information about the connector.  I wonder if you remove the special connector and use a standard IDE cable.  I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?  Something to try...
Good luck,
-Shawn
 

 
 
 On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote:
 
 

 Hello,
  
 Is there anyone how knows what for connector this is...is it an IDE connector...and what the are the connections
 is there a adapter cable for it...unfortunately I mis the hard disk for the GRiD 1537E..
 I leave a picture from of the connector on the form...
  
 Thanks in advance
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Very nice pictures, Frits.  

 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn

 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 I've put some pictures up at:
 
 http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/
 
 The hard drive looks to be IDE. Thanks for any assistance!
 
 - Josh
 
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote:
 
 Hello there, Josh.
 I am not familiar with the 1537. Â It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector. Â By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn
 
 
 
 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch 
 To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
 
 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  
 
 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
 
 Thanks!
 Josh
 
 
 
 ------------------------------------
 
 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 



 

 
 
 
 
 
 



 
 
 
 

 

Yahoo! Message number: 2737
Date: Sat, 12 Oct 2013 17:49:47 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] RE: GRiDCASE 1537E information?
text/plain; charset=iso-8859-1

Yes.� But Phil, it looks like a physical SCSI connector.� But the cable connecting to it looks like a IDE cable.� That's why I think it's IDE.
I don't know for sure.� That's my $.02. :)
-Shawn





On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:




Hi, Josh,
�
This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This�is not an IDE connector, which�has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
�
Phil


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Fritz,
Very good pictures!� I'm sorry, I don't have any information about the connector.� I wonder if you remove the special connector and use a standard IDE cable.� I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?� Something to try...
Good luck,
-Shawn





On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote:





Hello,
�
Is there anyone how knows what�for connector this is...is it an IDE connector...and what the are the connections
is there a adapter cable for it...unfortunately I�mis the hard disk for the GRiD 1537E..
I leave a picture from of the connector�on the form...
�
Thanks in advance
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
Yes,it runs on a `386SX..
I will put some pictures on the forum...�
�
Frits�


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Very nice pictures, Frits.�

Do you know what microprocessor in on the motherboard?� The outside of the 1537E looks like a 1520.� That would have a '286 microprocessor.� But, if I am not mistaken, the 1530 series uses the '386SX.
It looks to be in very good condition. :)
-Shawn



---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


�Hello Josh,
�
I found a week ago the same GRiD Laptop...I have finally the 1537E working...
But I search for the hard drive carry...if you have a spare I like to hear from you...
I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
�
Frits


---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:


I've put some pictures up at:

http://yahozna.dyndns.org/scratch/gridcase/1537/

The hard drive looks to be IDE.  Thanks for any assistance!

- Josh



--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz  wrote:
>>>>>
>>>>>Hello there, Josh.
>>>>>I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
>>>>>I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector?
>>>>>Sorry I can't be much help. The 1537 is rare find.
>>>>>Feel free to post pictures. :-)
>>>>>-Shawn
>>>>>
>>>>>
>>>>>
>>>>>-------- Original message --------
>>>>>Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>From: jadersch
>>>>>To: RuGRiD-Laptop@yahoogroups.com
>>>>>CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>
>>>>>Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?). 
>>>>>
>>>>>It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
>>>>>
>>>>>Thanks!
>>>>>Josh
>>>>>
>>>>>
>>>>>
>>>>>------------------------------------
>>>>>
>>>>>http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2738
Date: 12 Oct 2013 19:20:45 -0700
From:
Subject: RE: Re: [RuGRiD-Laptop] RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

You're right, Shawn,
  
 But ribbon cabling was used for other purposes than IDE connection, especially if this is some unique purpose to a specific and unique piece of hardware.
  
 Phil 
 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

 Yes.  But Phil, it looks like a physical SCSI connector.  But the cable connecting to it looks like a IDE cable.  That's why I think it's IDE.
I don't know for sure.  That's my $.02. :)
-Shawn
 

 
 
 On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:
 
 Hi, Josh,
  
 This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This is not an IDE connector, which has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote: Fritz, Very good pictures!  I'm sorry, I don't have any information about the connector.  I wonder if you remove the special connector and use a standard IDE cable.  I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?  Something to try... Good luck, -Shawn 
 On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote: 
 

 Hello,
  
 Is there anyone how knows what for connector this is...is it an IDE connector...and what the are the connections
 is there a adapter cable for it...unfortunately I mis the hard disk for the GRiD 1537E..
 I leave a picture from of the connector on the form...
  
 Thanks in advance
 Frits
 ---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote: Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 ---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote: Very nice pictures, Frits.  
 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn 
 ---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 ---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote: I've put some pictures up at: http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/ The hard drive looks to be IDE. Thanks for any assistance! - Josh --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote: Hello there, Josh. I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure. I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector? Sorry I can't be much help. The 1537 is rare find. Feel free to post pictures. :-) -Shawn -------- Original message -------- Subject: [RuGRiD-Laptop] GRiDCASE 1537E information? From: jadersch To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com CC: [RuGRiD-Laptop] GRiDCASE 1537E information? Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare? Thanks! Josh ------------------------------------ http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 



 

 
 
 
 
 
 

 

 

 


 

 
 





 
 
 
 

Yahoo! Message number: 2739
Date: Sun, 13 Oct 2013 09:15:48 +0100 (BST)
From: =?koi8-r?B?4NLJyiDsxdPLz9fFww==?=
Subject: Gridcase 1520
text/plain; charset=koi8-r

Hello! I have a laptop Gridcase 1520, but he has a broken matrix. If you have those instances on the parts that please! If you have any information, please write.

Yahoo! Message number: 2740
Date: Sun, 13 Oct 2013 09:04:50 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

Hello.
Do you have the orange, plasma display?  Or, do you have the grey LCD display?
-Shawn





On Sunday, October 13, 2013 4:15 AM, Юрий Лесковец <lescovez@yahoo.com> wrote:





Hello! I have a laptop Gridcase 1520, but he has a broken matrix. If you have those instances on the parts that please! If you have any information, please write.

Yahoo! Message number: 2741
Date: Sun, 13 Oct 2013 17:09:05 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiBbUnVHUmlELUxhcHRvcF0gR3JpZGNhc2UgMTUyMA==?=
text/plain; charset=utf-8

I have orange plasma display.



________________________________
 От: Shawnerz <shawnerz@...>
Кому: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Отправлено: воскресенье, 13 октября 2013 22:04
Тема: Re: [RuGRiD-Laptop] Gridcase 1520



 
Hello.
Do you have the orange, plasma display?  Or, do you have the grey LCD display?
-Shawn





On Sunday, October 13, 2013 4:15 AM, Юрий Лесковец <lescovez@...> wrote:




Hello! I have a laptop Gridcase 1520, but he has a broken matrix. If you have those instances on the parts that please! If you have any information, please write.

Yahoo! Message number: 2742
Date: Sun, 13 Oct 2013 09:43:09 -0700 (PDT)
From: Shawnerz
Subject: =?utf-8?B?UmU6INCe0YLQsjogW1J1R1JpRC1MYXB0b3BdIEdyaWRjYXNlIDE1MjA=?=
text/plain; charset=utf-8

There are not a lot of the orange plasma display.  It is hard to find.  I have one, but I do not want to sell it.  Maybe there is another person on the list that would like to sell theirs to you.
Good luck,
-Shawn





On Sunday, October 13, 2013 12:09 PM, Юрий Лесковец <lescovez@...> wrote:




I have orange plasma display.



________________________________
 От: Shawnerz <shawnerz@...>
Кому: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Отправлено: воскресенье, 13 октября 2013 22:04
Тема: Re: [RuGRiD-Laptop] Gridcase 1520



 
Hello.
Do you have the orange, plasma display?  Or, do you have the grey LCD display?
-Shawn





On Sunday, October 13, 2013 4:15 AM, Юрий Лесковец <lescovez@...> wrote:




Hello! I have a laptop Gridcase 1520, but he has a broken matrix. If you have those instances on the parts that please! If you have any information, please write.

Yahoo! Message number: 2743
Date: Sun, 13 Oct 2013 17:49:44 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiDQntGC0LI6IFtSdUdSaUQtTGFwdG9wXSBHcmlkY2FzZSAxNTIw?=
text/plain; charset=utf-8

Okay, thanks for the information. If you decide to sell, I can offer 100$.



________________________________
 От: Shawnerz <shawnerz@yahoo.com>
Кому: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Отправлено: воскресенье, 13 октября 2013 22:43
Тема: Re: Отв: [RuGRiD-Laptop] Gridcase 1520



 
There are not a lot of the orange plasma display.  It is hard to find.  I have one, but I do not want to sell it.  Maybe there is another person on the list that would like to sell theirs to you.
Good luck,
-Shawn





On Sunday, October 13, 2013 12:09 PM, Юрий Лесковец <lescovez@...> wrote:




I have orange plasma display.



________________________________
 От: Shawnerz <shawnerz@...>
Кому: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Отправлено: воскресенье, 13 октября 2013 22:04
Тема: Re: [RuGRiD-Laptop] Gridcase 1520



 
Hello.
Do you have the orange, plasma display?  Or, do you have the grey LCD display?
-Shawn





On Sunday, October 13, 2013 4:15 AM, Юрий Лесковец <lescovez@...> wrote:




Hello! I have a laptop Gridcase 1520, but he has a broken matrix. If you have those instances on the parts that please! If you have any information, please write.

Yahoo! Message number: 2744
Date: 13 Oct 2013 09:54:58 -0700
From:
Subject: I am looking for orange plasma dislay from my Gridcase 1520
text/plain; charset=utf-8

Anyone who can help write, I will be happy.

Yahoo! Message number: 2745
Date: 14 Oct 2013 11:44:49 -0700
From:
Subject: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

Hello,
  
 I will look in to it Shawn... perhaps I should take again the GRiD 1537E apart to see where the connections are going to...
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 You're right, Shawn,
  
 But ribbon cabling was used for other purposes than IDE connection, especially if this is some unique purpose to a specific and unique piece of hardware.
  
 Phil 
 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

 Yes.  But Phil, it looks like a physical SCSI connector.  But the cable connecting to it looks like a IDE cable.  That's why I think it's IDE.
I don't know for sure.  That's my $.02. :)
-Shawn
 

 
 
 On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:
 
 Hi, Josh,
  
 This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This is not an IDE connector, which has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote: Fritz, Very good pictures!  I'm sorry, I don't have any information about the connector.  I wonder if you remove the special connector and use a standard IDE cable.  I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?  Something to try... Good luck, -Shawn 
 On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote: 
 

 Hello,
  
 Is there anyone how knows what for connector this is...is it an IDE connector...and what the are the connections
 is there a adapter cable for it...unfortunately I mis the hard disk for the GRiD 1537E..
 I leave a picture from of the connector on the form...
  
 Thanks in advance
 Frits
 ---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote: Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 ---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote: Very nice pictures, Frits.  
 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn 
 ---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 ---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote: I've put some pictures up at: http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/ The hard drive looks to be IDE. Thanks for any assistance! - Josh --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote: Hello there, Josh. I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure. I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector? Sorry I can't be much help. The 1537 is rare find. Feel free to post pictures. :-) -Shawn -------- Original message -------- Subject: [RuGRiD-Laptop] GRiDCASE 1537E information? From: jadersch To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com CC: [RuGRiD-Laptop] GRiDCASE 1537E information? Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare? Thanks! Josh ------------------------------------ http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 



 

 
 
 
 
 
 

 

 

 


 

 
 





 
 
 
 



 

Yahoo! Message number: 2746
Date: 20 Oct 2013 11:15:50 -0700
From:
Subject: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

I add several pictures and I found a connector for the HDD.....
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 I will look in to it Shawn... perhaps I should take again the GRiD 1537E apart to see where the connections are going to...
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 You're right, Shawn,
  
 But ribbon cabling was used for other purposes than IDE connection, especially if this is some unique purpose to a specific and unique piece of hardware.
  
 Phil 
 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

 Yes.  But Phil, it looks like a physical SCSI connector.  But the cable connecting to it looks like a IDE cable.  That's why I think it's IDE.
I don't know for sure.  That's my $.02. :)
-Shawn
 

 
 
 On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:
 
 

 Hi, Josh,
  
 This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This is not an IDE connector, which has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
  
 Phil
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Fritz,
Very good pictures!  I'm sorry, I don't have any information about the connector.  I wonder if you remove the special connector and use a standard IDE cable.  I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?  Something to try...
Good luck,
-Shawn
 

 
 
 On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote: 
 
 

 

 Hello,
  
 Is there anyone how knows what for connector this is...is it an IDE connector...and what the are the connections
 is there a adapter cable for it...unfortunately I mis the hard disk for the GRiD 1537E..
 I leave a picture from of the connector on the form...
  
 Thanks in advance
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Very nice pictures, Frits.  

 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn

 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 I've put some pictures up at:
 
 http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/
 
 The hard drive looks to be IDE. Thanks for any assistance!
 
 - Josh
 
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote:
 
 Hello there, Josh.
 I am not familiar with the 1537. Â It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector. Â By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn
 
 
 
 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch 
 To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
 
 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  
 
 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
 
 Thanks!
 Josh
 
 
 
 ------------------------------------
 
 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 



 

 
 
 
 
 
 



 

 

 

 


 

 
 
 
 





 
 
 
 



 

 

Yahoo! Message number: 2747
Date: Sun, 20 Oct 2013 20:37:20 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] RE: GRiDCASE 1537E information?
text/plain; charset=iso-8859-1

I see I was wrong.� I thought the DIP connector to the rear of the hard drive connector was an IDE hard drive connection.� It is not.� It is the floppy drive connection.� I do not know how to connect a hard drive to that Grid.
On a humorous note, ff the interface is IDE, only 44 of the 53 pins are needed, so that lessens the possibilities. :)
-Shawn





On Sunday, October 20, 2013 2:15 PM, "fritsp2007@..." <fritsp2007@...> wrote:





I add several pictures and I found a connector for the HDD.....
�
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
I will look in to it Shawn...�perhaps I should take again the GRiD 1537E�apart to see where the connections are going to...
�
Frits


---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:


You're right, Shawn,
�
But�ribbon cabling was used for other purposes than IDE connection, especially if this is some unique�purpose to a specific and unique piece of hardware.
�
Phil�


---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


Yes.� But Phil, it looks like a physical SCSI connector.� But the cable connecting to it looks like a IDE cable.� That's why I think it's IDE.
I don't know for sure.� That's my $.02. :)
-Shawn





On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:




Hi, Josh,
�
This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This�is not an IDE connector, which�has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
�
Phil


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Fritz,
Very good pictures!� I'm sorry, I don't have any information about the connector.� I wonder if you remove the special connector and use a standard IDE cable.� I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?� Something to try...
Good luck,
-Shawn





On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote:





Hello,
�
Is there anyone how knows what�for connector this is...is it an IDE connector...and what the are the connections
is there a adapter cable for it...unfortunately I�mis the hard disk for the GRiD 1537E..
I leave a picture from of the connector�on the form...
�
Thanks in advance
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
Yes,it runs on a `386SX..
I will put some pictures on the forum...�
�
Frits�


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Very nice pictures, Frits.�

Do you know what microprocessor in on the motherboard?� The outside of the 1537E looks like a 1520.� That would have a '286 microprocessor.� But, if I am not mistaken, the 1530 series uses the '386SX.
It looks to be in very good condition. :)
-Shawn



---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


�Hello Josh,
�
I found a week ago the same GRiD Laptop...I have finally the 1537E working...
But I search for the hard drive carry...if you have a spare I like to hear from you...
I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
�
Frits


---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:


I've put some pictures up at:

http://yahozna.dyndns.org/scratch/gridcase/1537/

The hard drive looks to be IDE.  Thanks for any assistance!

- Josh



--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz  wrote:
>>>>>>>>
>>>>>>>>Hello there, Josh.
>>>>>>>>I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
>>>>>>>>I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector?
>>>>>>>>Sorry I can't be much help. The 1537 is rare find.
>>>>>>>>Feel free to post pictures. :-)
>>>>>>>>-Shawn
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>-------- Original message --------
>>>>>>>>Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>>>>From: jadersch
>>>>>>>>To: RuGRiD-Laptop@yahoogroups.com
>>>>>>>>CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>>>>
>>>>>>>>Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?). 
>>>>>>>>
>>>>>>>>It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
>>>>>>>>
>>>>>>>>Thanks!
>>>>>>>>Josh
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>------------------------------------
>>>>>>>>
>>>>>>>>http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2748
Date: 21 Oct 2013 10:04:36 -0700
From:
Subject: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

Hello Shawn,
  
 The AIC-6260AL is a SCSI controller and it`s on board.!!!
 SCSI in those days was reliable than IDE thats why I think there belongs a SCSI hardrive..(CP3040A)
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 I see I was wrong.  I thought the DIP connector to the rear of the hard drive connector was an IDE hard drive connection.  It is not.  It is the floppy drive connection.  I do not know how to connect a hard drive to that Grid.
On a humorous note, ff the interface is IDE, only 44 of the 53 pins are needed, so that lessens the possibilities. :)
-Shawn
 

 
 
 On Sunday, October 20, 2013 2:15 PM, "fritsp2007@..." <fritsp2007@...> wrote:
 
 

 I add several pictures and I found a connector for the HDD.....
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 I will look in to it Shawn... perhaps I should take again the GRiD 1537E apart to see where the connections are going to...
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 You're right, Shawn,
  
 But ribbon cabling was used for other purposes than IDE connection, especially if this is some unique purpose to a specific and unique piece of hardware.
  
 Phil 
 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

 Yes.  But Phil, it looks like a physical SCSI connector.  But the cable connecting to it looks like a IDE cable.  That's why I think it's IDE.
I don't know for sure.  That's my $.02. :)
-Shawn
 

 
 
 On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:
 
 

 Hi, Josh,
  
 This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This is not an IDE connector, which has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
  
 Phil
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Fritz,
Very good pictures!  I'm sorry, I don't have any information about the connector.  I wonder if you remove the special connector and use a standard IDE cable.  I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?  Something to try...
Good luck,
-Shawn
 

 
 
 On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote: 
 
 

 

 Hello,
  
 Is there anyone how knows what for connector this is...is it an IDE connector...and what the are the connections
 is there a adapter cable for it...unfortunately I mis the hard disk for the GRiD 1537E..
 I leave a picture from of the connector on the form...
  
 Thanks in advance
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Very nice pictures, Frits.  

 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn

 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 I've put some pictures up at:
 
 http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/
 
 The hard drive looks to be IDE. Thanks for any assistance!
 
 - Josh
 
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote:
 
 Hello there, Josh.
 I am not familiar with the 1537. Â It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector. Â By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn
 
 
 
 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch 
 To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
 
 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  
 
 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
 
 Thanks!
 Josh
 
 
 
 ------------------------------------
 
 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links 
 



 

 
 
 
 
 
 



 

 

 

 


 

 
 
 
 





 
 
 
 



 

 
 
 
 
 
 



 
 
 
 

 

Yahoo! Message number: 2749
Date: Mon, 21 Oct 2013 17:01:31 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] RE: GRiDCASE 1537E information?
text/plain; charset=iso-8859-1

Good luck and thanks for the information! :)
-Shawn





On Monday, October 21, 2013 1:04 PM, "fritsp2007@..." <fritsp2007@...> wrote:




Hello Shawn,
�
The AIC-6260AL is a SCSI�controller and it`s on board.!!!
SCSI in those days was reliable than IDE thats why I think there belongs a SCSI hardrive..(CP3040A)
�
Frits


---In rugrid-laptop@...m, <shawnerz@...> wrote:


I see I was wrong.� I thought the DIP connector to the rear of the hard drive connector was an IDE hard drive connection.� It is not.� It is the floppy drive connection.� I do not know how to connect a hard drive to that Grid.
On a humorous note, ff the interface is IDE, only 44 of the 53 pins are needed, so that lessens the possibilities. :)
-Shawn





On Sunday, October 20, 2013 2:15 PM, "fritsp2007@..." <fritsp2007@...> wrote:





I add several pictures and I found a connector for the HDD.....
�
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
I will look in to it Shawn...�perhaps I should take again the GRiD 1537E�apart to see where the connections are going to...
�
Frits


---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:


You're right, Shawn,
�
But�ribbon cabling was used for other purposes than IDE connection, especially if this is some unique�purpose to a specific and unique piece of hardware.
�
Phil�


---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


Yes.� But Phil, it looks like a physical SCSI connector.� But the cable connecting to it looks like a IDE cable.� That's why I think it's IDE.
I don't know for sure.� That's my $.02.
 :)
-Shawn





On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:




Hi, Josh,
�
This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This�is not an IDE connector, which�has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
�
Phil


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Fritz,
Very good pictures!� I'm sorry, I don't have any information about the connector.� I wonder if you remove the special connector and use a standard IDE cable.� I wonder if it would work if you connected a cable from the motherboard
 directly to the hard drive?� Something to try...
Good luck,
-Shawn





On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote:

 



Hello,
�
Is there anyone how knows what�for connector this is...is it an IDE connector...and what the are the connections
is there a adapter cable for it...unfortunately I�mis the hard disk for the GRiD 1537E..
I leave a picture from of the connector�on the form...
�
Thanks in advance
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
Yes,it runs on a `386SX..
I will put some pictures on the forum...�
�
Frits�


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Very nice pictures, Frits.�

Do you know what microprocessor in on the motherboard?� The outside of the 1537E looks like a 1520.� That would have a '286 microprocessor.� But, if I am not mistaken, the 1530 series uses the '386SX.
It looks to be in very good condition. :)
-Shawn



---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


�Hello Josh,
�
I found a week ago the same GRiD Laptop...I have finally the 1537E working...
But I search for the hard drive carry...if you have a spare I like to hear from you...
I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
�
Frits


---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:


I've put some pictures up at:

http://yahozna.dyndns.org/scratch/gridcase/1537/

The hard drive looks to be IDE.  Thanks for any assistance!

- Josh



--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz  wrote:
>>>>>>>>>
>>>>>>>>>Hello there, Josh.
>>>>>>>>>I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
>>>>>>>>>I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector?
>>>>>>>>>Sorry I can't be much help. The 1537 is rare find.
>>>>>>>>>Feel free to post pictures. :-)
>>>>>>>>>-Shawn
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>-------- Original message --------
>>>>>>>>>Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>>>>>From: jadersch
>>>>>>>>>To: RuGRiD-Laptop@yahoogroups.com
>>>>>>>>>CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>>>>>
>>>>>>>>>Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?). 
>>>>>>>>>
>>>>>>>>>It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
>>>>>>>>>
>>>>>>>>>Thanks!
>>>>>>>>>Josh
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>------------------------------------
>>>>>>>>>
>>>>>>>>>http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links

Yahoo! Message number: 2750
Date: 22 Oct 2013 11:54:56 -0700
From:
Subject: RE: GRiDCASE 1537E information?
text/plain; charset=utf-8

Haven't been on the group list for a while. I have a couple of 1520s, and some cartridges and other stuff, one of which is for SCSI devices. It has the same pin-outs as the small external FD (model 32170) and uses the same cable ( DB25F : 25-pin with the top bank end-pin not present). I bought the SCSI cartridge from a woman supplier who was selling off her stock about 10 years ago. She also had 422 adapter cartridges, and I kick myself now for not buying one at the time (finances were low). It also came with 2 manuals and a floppy disk containing the driver and some programs. The company who made it was SAI Technology (A Division of Science Applications International Corp.) The SPECS were:
 SCSI Controller  Future Domain TMC900 Gate Array
 ROM-BIOS Base Addresses  CA)),C800,CE00,DB00; jumper selectable
 Interrupts   IRQ3 or IRQ5; jumper selectable
  There is also Configuration and Base Address Selection info. 

 The cartridge is capable of supporting 7 SCSI devices, 6 fixed disks, and one tape.

 

 The software is Future Domain's patented "Disk Maestro"
 

  The 1520s are branded with a Canada Post logo. CP issued them to it's salespersons who used them to also network with the head-office. I bought them at a surplus dealer mid-90s. As a vintage collector, the grid was always one of my favorites, but with the final demise of my Connor HDs they await patiently for a replacement or bios chip alteration and working drive. I'm also still looking for a network cartridge. The 1520s screens are the plasma type, and I'm keeping the other one for parts. Once I get one of the 1520s functioning I might also release some of my 1mb SIPP chips.
 

 Lawrence

 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Good luck and thanks for the information! :)
-Shawn
 

 
 
 On Monday, October 21, 2013 1:04 PM, "fritsp2007@..." <fritsp2007@...> wrote:
 
 

 Hello Shawn,
  
 The AIC-6260AL is a SCSI controller and it`s on board.!!!
 SCSI in those days was reliable than IDE thats why I think there belongs a SCSI hardrive..(CP3040A)
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 I see I was wrong.  I thought the DIP connector to the rear of the hard drive connector was an IDE hard drive connection.  It is not.  It is the floppy drive connection.  I do not know how to connect a hard drive to that Grid.
On a humorous note, ff the interface is IDE, only 44 of the 53 pins are needed, so that lessens the possibilities. :)
-Shawn
 

 
 
 On Sunday, October 20, 2013 2:15 PM, "fritsp2007@..." <fritsp2007@...> wrote: 
 
 

 

 I add several pictures and I found a connector for the HDD.....
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 I will look in to it Shawn... perhaps I should take again the GRiD 1537E apart to see where the connections are going to...
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 You're right, Shawn,
  
 But ribbon cabling was used for other purposes than IDE connection, especially if this is some unique purpose to a specific and unique piece of hardware.
  
 Phil 
 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

 Yes.  But Phil, it looks like a physical SCSI connector.  But the cable connecting to it looks like a IDE cable.  That's why I think it's IDE.
I don't know for sure.  That's my $.02. :)
-Shawn
 

 
 
 On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:
 
 

 Hi, Josh,
  
 This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This is not an IDE connector, which has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
  
 Phil
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Fritz,
Very good pictures!  I'm sorry, I don't have any information about the connector.  I wonder if you remove the special connector and use a standard IDE cable.  I wonder if it would work if you connected a cable from the motherboard directly to the hard drive?  Something to try...
Good luck,
-Shawn
 

 
 
 On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote: 
 
 

 

 Hello,
  
 Is there anyone how knows what for connector this is...is it an IDE connector...and what the are the connections
 is there a adapter cable for it...unfortunately I mis the hard disk for the GRiD 1537E..
 I leave a picture from of the connector on the form...
  
 Thanks in advance
 Frits
 

---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:

 Hello,
  
 Yes,it runs on a `386SX..
 I will put some pictures on the forum... 
  
 Frits 
 

---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:

 Very nice pictures, Frits.  

 Do you know what microprocessor in on the motherboard?  The outside of the 1537E looks like a 1520.  That would have a '286 microprocessor.  But, if I am not mistaken, the 1530 series uses the '386SX.
 It looks to be in very good condition. :)
 -Shawn

 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

  Hello Josh,
  
 I found a week ago the same GRiD Laptop...I have finally the 1537E working...
 But I search for the hard drive carry...if you have a spare I like to hear from you...
 I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
  
 Frits
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 I've put some pictures up at:
 
 http://yahozna.dyndns.org/scratch/gridcase/1537/ http://yahozna.dyndns.org/scratch/gridcase/1537/
 
 The hard drive looks to be IDE. Thanks for any assistance!
 
 - Josh
 
 
 --- In RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com, Shawnerz wrote:
 
 Hello there, Josh.
 I am not familiar with the 1537. Â It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
 I am also not familiar with the hard drive connections. It may be some special SCSI connector. Â By any chance, does it look like an IDE type connector?
 Sorry I can't be much help. The 1537 is rare find.
 Feel free to post pictures. :-)
 -Shawn
 
 
 
 -------- Original message --------
 Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
 From: jadersch 
 To: RuGRiD-Laptop@yahoogroups.com mailto:RuGRiD-Laptop@yahoogroups.com
 CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
 
 Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?).  
 
 It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
 
 Thanks!
 Josh
 
 
 
 ------------------------------------
 
 http://groups.yahoo.com/group/rugrid-laptop/Yahoo! http://groups.yahoo.com/group/rugrid-laptop/Yahoo%21 Groups Links 
 



 

 
 
 
 
 
 



 

 

 

 


 

(Message over 64 KB, truncated)
































 

Yahoo! Message number: 2751
Date: Wed, 23 Oct 2013 04:25:13 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] RE: GRiDCASE 1537E information?
text/plain; charset=iso-8859-1

Very cool, Lawrence.
The -422 adapters sound cool.� I have two of the networking adapters.� I've forgotten the proper terminology.� The cartridge slide in to the Grid and has a AIN(?), AIU(?), connector.� That connector accepts another small dongle that has a coaxial connector.� It's difficult to explain via email.� Once day, I'll have to take some pictures.
The woman I bought them from on ebay also had an adapter that allowed the Grid to "talk" IEEE-488 or GPIB.� I did not have a need for GPIB, so I did not buy one.
Good luck and thanks for the post,
-Shawn �





On Tuesday, October 22, 2013 2:55 PM, "bigwalk_ca@..." <bigwalk_ca@...> wrote:




Haven't been on the group list for a while. I have a couple of 1520s, and some cartridges and other stuff, one of which is for SCSI devices. It has the same pin-outs as the small external FD (model 32170) and uses the same cable ( DB25F : 25-pin with the top bank end-pin not present). I bought the SCSI cartridge from a woman supplier who was selling off her stock about 10 years ago. She also had 422 adapter cartridges, and I kick myself now for not buying one at the time (finances were low). It also came with 2 manuals and a floppy disk containing the driver and some programs. The company who made it was SAI Technology (A Division of Science Applications International Corp.) The SPECS were:
SCSI Controller� Future Domain TMC900 Gate Array
ROM-BIOS Base Addresses� CA)),C800,CE00,DB00; jumper selectable
Interrupts�� IRQ3 or IRQ5; jumper selectable
�There is also Configuration and Base Address Selection info.

The cartridge is capable of supporting 7 SCSI devices, 6 fixed disks, and one tape.


The software is Future Domain's patented "Disk Maestro"

�The 1520s are branded with a Canada Post logo. CP issued them to it's salespersons who used them to also network with the head-office. I bought them at a surplus dealer mid-90s. As a vintage collector, the grid was always one of my favorites, but with the final demise of my Connor HDs they await patiently for a replacement or bios chip alteration and working drive. I'm also still looking for a network cartridge. The 1520s screens are the plasma type, and I'm keeping the other one for parts. Once I get one of the 1520s functioning I might also release some of my 1mb SIPP chips.

Lawrence



---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Good luck and thanks for the information! :)
-Shawn





On Monday, October 21, 2013 1:04 PM, "fritsp2007@..." <fritsp2007@...> wrote:




Hello Shawn,
�
The AIC-6260AL is a SCSI�controller and it`s on board.!!!
SCSI in those days was reliable than IDE thats why I think there belongs a SCSI hardrive..(CP3040A)
�
Frits


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


I see I was wrong.� I thought the DIP connector to the rear of the hard drive connector was an IDE hard drive connection.� It is not.� It is the floppy drive connection.� I do not know how to connect a hard drive to that Grid.
On a humorous note, ff the interface is IDE, only 44 of the 53 pins are needed, so that lessens the possibilities. :)
-Shawn





On Sunday, October 20, 2013 2:15 PM, "fritsp2007@..." <fritsp2007@...> wrote:





I add several pictures and I found a connector for the HDD.....
�
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
I will look in to it Shawn...�perhaps I should take again the GRiD 1537E�apart to see where the connections are going to...
�
Frits


---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:


You're right, Shawn,
�
But�ribbon cabling was used for other purposes than IDE connection, especially if this is some unique�purpose to a specific and unique piece of hardware.
�
Phil�


---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


Yes.� But Phil, it looks like a physical SCSI connector.� But the cable connecting to it looks like a IDE cable.� That's why I think it's IDE.
I don't know for sure.� That's my $.02.
 :)
-Shawn





On Saturday, October 12, 2013 8:41 PM, "Jeriddian@..." <Jeriddian@...> wrote:




Hi, Josh,
�
This connector you are showing has 53 pins, all off set in a D-Connetcor pattern. This�is not an IDE connector, which�has 40 pins aligned with each other in a rectangle of 2x20. These old GRiDs actually came a little before the IDE protocol was well established, and use the MFM protocol instead, but this used the same 40 pin connection as IDE. I think this connector id meant for some specific piece of hardware that is unique to this computer, probably for military use. But as to what that may be, I have no idea. The only other thought that came to mind might be SCSI, but this unit probably predates SCSI by a few years, and even SCSI-I didn't have that many pins on it. It may be that the 1537E didn't even have a hard disk installed on it at all. My guess is you would have to get more information on what this unit did for the military to get an idea of what was in it. Good luck.
�
Phil


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Fritz,
Very good pictures!� I'm sorry, I don't have any information about the connector.� I wonder if you remove the special connector and use a
 standard IDE cable.� I wonder if it would work if you connected a cable from the motherboard
 directly to the hard drive?� Something to try...
Good luck,
-Shawn





On Saturday, October 12, 2013 1:06 PM, "fritsp2007@..." <fritsp2007@...> wrote:





Hello,
�
Is there anyone how knows what�for connector this is...is it an IDE connector...and what the are the connections
is there a adapter cable for it...unfortunately I�mis the hard disk for the GRiD 1537E..
I leave a picture from of the connector�on the form...
�
Thanks in advance
Frits


---In rugrid-laptop@yahoogroups.com, <fritsp2007@...> wrote:


Hello,
�
Yes,it runs on a `386SX..
I will put some pictures on the forum...�
�
Frits�


---In rugrid-laptop@yahoogroups.com, <shawnerz@...> wrote:


Very nice pictures, Frits.�

Do you know what microprocessor in on the motherboard?� The outside of the 1537E looks like a 1520.� That would have a '286 microprocessor.� But, if I am not mistaken, the 1530 series uses the '386SX.
It looks to be in very good condition. :)
-Shawn



---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:


�Hello Josh,
�
I found a week ago the same GRiD Laptop...I have finally the 1537E working...
But I search for the hard drive carry...if you have a spare I like to hear from you...
I have a lot of picture`s and the connection from the power supply is not that hard too figure out..
�
Frits


---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:


I've put some pictures up at:

http://yahozna.dyndns.org/scratch/gridcase/1537/

The hard drive looks to be IDE.  Thanks for any assistance!

- Josh



--- In RuGRiD-Laptop@yahoogroups.com, Shawnerz  wrote:
>>>>>>>>>>
>>>>>>>>>>Hello there, Josh.
>>>>>>>>>>I am not familiar with the 1537.  It sounds like the power connector is the same one used on the 1550SX. Without seeing the connector, I can't be 100% sure.
>>>>>>>>>>I am also not familiar with the hard drive connections. It may be some special SCSI connector.  By any chance, does it look like an IDE type connector?
>>>>>>>>>>Sorry I can't be much help. The 1537 is rare find.
>>>>>>>>>>Feel free to post pictures. :-)
>>>>>>>>>>-Shawn
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>-------- Original message --------
>>>>>>>>>>Subject: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>>>>>>From: jadersch
>>>>>>>>>>To: RuGRiD-Laptop@yahoogroups.com
>>>>>>>>>>CC: [RuGRiD-Laptop] GRiDCASE 1537E information?
>>>>>>>>>>
>>>>>>>>>>Scored a GRiDCASE 1537E recently, this is a Tempest-hardened 1530, as far as I've been able to determine.  My unit came without a power supply, and this unit uses a custom connector that I haven't seen before (it's a round unit, maybe 1/4" in diameter with three pins), does anyone know the pinouts (or have a spare supply?). 
>>>>>>>>>>
>>>>>>>>>>It also came with a hard drive in a removable caddy but the caddy is missing a part -- whatever connects between the GRiD's internal connector and the hard drive's interface + power connectors is not present. Anyone have one of these going spare?
>>>>>>>>>>
>>>>>>>>>>Thanks!
>>>>>>>>>>Josh
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>------------------------------------
>>>>>>>>>>
>>>>>>>>>>http://groups.yahoo.com/group/rugrid-laptop/Yahoo! Groups Links






(Message over 64 KB, truncated)

Yahoo! Message number: 2752
Date: 24 Oct 2013 22:11:16 -0700
From:
Subject: Selling 1530
text/plain; charset=utf-8

I really wanted to revive this, but it's been over 3 years now.  Time to move on.  I have a 1530, when I turned it on 3yrs ago the BIOs battery was dead & wouldn't boot.  Now it isn't showing anything on screen.  The power supply is good. 

 I don't remember if this had a amber or green screen.  It has a working Connor harddrive inside, Intel 386i chip.  And I have an extra Dallas  ds12887 chip
 

 $80 plus shipping (paypal preferred)

Yahoo! Message number: 2753
Date: 25 Oct 2013 07:52:39 -0700
From:
Subject: RE: Selling 1530
text/plain; charset=utf-8

 Hi, at_hound,
  
 I seem to be the 1530 guy here, for the most part I think. I'll be happy to take it off your hands. Please send your info on total cost and where to send it to me via my email jeriddian@msn.com mailto:jeriddian@msn.com. Thanks.
  
 Phil
 

---In RuGRiD-Laptop@yahoogroups.com, <rugrid-laptop@yahoogroups.com> wrote:

 I really wanted to revive this, but it's been over 3 years now.  Time to move on.  I have a 1530, when I turned it on 3yrs ago the BIOs battery was dead & wouldn't boot.  Now it isn't showing anything on screen.  The power supply is good. 

 I don't remember if this had a amber or green screen.  It has a working Connor harddrive inside, Intel 386i chip.  And I have an extra Dallas  ds12887 chip
 

 $80 plus shipping (paypal preferred)

Yahoo! Message number: 2754
Date: 13 Nov 2013 11:27:09 -0800
From:
Subject: Grid 1520 password

Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

Yahoo! Message number: 2755
Date: Sun, 17 Nov 2013 08:02:31 -0800 (PST)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Grid 1520 password [2 Attachments]
text/plain; charset=iso-8859-1

I apologize for the delay in responding to this email.
If I remember correctly, there is no fix for this.� Does anyone else remember how to get around this?
Thanks,
-Shawn





On Wednesday, November 13, 2013 2:27 PM, "lescovez@..." <lescovez@...> wrote:


[Attachment(s) from lescovez@... included below]

Hello! I have a grid in 1520.
There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!

Yahoo! Message number: 2756
Date: 17 Nov 2013 09:18:57 -0800
From:
Subject: RE: Re: [RuGRiD-Laptop] Grid 1520 password [2 Attachments]
text/plain; charset=utf-8

I had a pair of 1520's that both had passwords set. Replacing the CMOS battery cleared the passwords in both cases.
 

 Cheers,
 Dave 
 

---In RuGRiD-Laptop@yahoogroups.com, <shawnerz@...> wrote:

 I apologize for the delay in responding to this email.
If I remember correctly, there is no fix for this.  Does anyone else remember how to get around this?
Thanks,
-Shawn
 

 
 
 On Wednesday, November 13, 2013 2:27 PM, "lescovez@..." <lescovez@...> wrote:
 
 [Attachment(s) https://us-mg5.mail.yahoo.com/neo/launch?.rand=325ib50ge55p9#TopText from lescovez@... included below] 

 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you! 
 
 
 
 




 
 
 
 

Yahoo! Message number: 2757
Date: Sun, 17 Nov 2013 10:07:59 -0800 (PST)
From: Shawnerz
Subject: Re: Re: [RuGRiD-Laptop] Grid 1520 password
text/plain; charset=iso-8859-1

Thanks for the info, Dave. :)
-Shawn





On Sunday, November 17, 2013 12:18 PM, "atlasrc4@..." <atlasrc4@...> wrote:




I had a pair of 1520's that both had passwords set. Replacing the CMOS battery cleared the passwords in both cases.

Cheers,
Dave�


---In RuGRiD-Laptop@yahoogroups.com, <shawnerz@...> wrote:


I apologize for the delay in responding to this email.
If I remember correctly, there is no fix for this.� Does anyone else remember how to get around this?
Thanks,
-Shawn





On Wednesday, November 13, 2013 2:27 PM, "lescovez@..." <lescovez@...> wrote:


[Attachment(s) from lescovez@... included below]


Hello! I have a grid in 1520.
There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!

Yahoo! Message number: 2758
Date: 17 Nov 2013 10:33:04 -0800
From:
Subject: RE: Grid 1520 password
text/plain; charset=utf-8

Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 

Yahoo! Message number: 2759
Date: 17 Nov 2013 11:15:34 -0800
From:
Subject: RE: Grid 1520 password
text/plain; charset=utf-8

Thank you! 
 

---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 

 

Yahoo! Message number: 2760
Date: 17 Nov 2013 11:49:41 -0800
From:
Subject: RE: RE: Grid 1520 password
text/plain; charset=utf-8

Hi!
The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
 

---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 

Yahoo! Message number: 2761
Date: 17 Nov 2013 13:20:33 -0800
From:
Subject: RE: RE: RE: Grid 1520 password
text/plain; charset=utf-8

No, lescovez,
  
 The password is activated ONLY when you put in a different Dallas 1287A other than the one which was originally installed in the computer. Since the GRiD was used as a military computer here in the US (and still is in England), I believe this was a security protocol which may have been adopted, but the password is activated ONLY when your replace the actual RTC chip itself, not the battery. If you drill into the chip and reroute the pins by soldering them to a new battery, but still using the same chip, it shouldn't ask for the password. It never has when I performed the second option procedure, which I've done two or three times myself just to see if it worked.
  
 Phil
 

---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Hi!
The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
 

 ---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 

Yahoo! Message number: 2762
Date: 17 Nov 2013 14:20:34 -0800
From:
Subject: RE: Grid 1520 password
text/plain; charset=utf-8

Why then the BIOS asks for a password if a battery low?
And says at the beginning: "invalid configuration information; code 02"
and then when you reboot: "Enter password, then press RETURN"
I need to check the possibility of replacing the chip dallas before ?

 

---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 No, lescovez,
  
 The password is activated ONLY when you put in a different Dallas 1287A other than the one which was originally installed in the computer. Since the GRiD was used as a military computer here in the US (and still is in England), I believe this was a security protocol which may have been adopted, but the password is activated ONLY when your replace the actual RTC chip itself, not the battery. If you drill into the chip and reroute the pins by soldering them to a new battery, but still using the same chip, it shouldn't ask for the password. It never has when I performed the second option procedure, which I've done two or three times myself just to see if it worked.
  
 Phil
 

 ---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Hi!
The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
 

 ---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 





 

Yahoo! Message number: 2763
Date: 17 Nov 2013 17:29:47 -0800
From:
Subject: RE: RE: Grid 1520 password
text/plain; charset=utf-8

I am assuming that your 1520 has the Dallas RTC chip. Is that correct? The "invalidation configuration information; code 02" is the Phoenix BIOS code telling you the CMOS battery is dead and needs to be replaced. When the CMOS battery dies, the RTC response to that varies. In most 1520's you cannot access the hard drive. In some you still can, after pressing F1. It may be that in your particular unit, it may not recognize the RTC chip anymore, thus triggering the password response by the computer on reboot. In any case, what you must do is replace the CMOS battery by one of the methods I already outlined to you. Once you restore CMOS battery power to the RTC chip, I believe the  password question will go away. But in any case, you have to restore CMOS battery power to the RTC before you can proceed any further.
  
 Phil
 

---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Why then the BIOS asks for a password if a battery low?
And says at the beginning: "invalid configuration information; code 02"
and then when you reboot: "Enter password, then press RETURN"
I need to check the possibility of replacing the chip dallas before ?

 

 ---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 No, lescovez,
  
 The password is activated ONLY when you put in a different Dallas 1287A other than the one which was originally installed in the computer. Since the GRiD was used as a military computer here in the US (and still is in England), I believe this was a security protocol which may have been adopted, but the password is activated ONLY when your replace the actual RTC chip itself, not the battery. If you drill into the chip and reroute the pins by soldering them to a new battery, but still using the same chip, it shouldn't ask for the password. It never has when I performed the second option procedure, which I've done two or three times myself just to see if it worked.
  
 Phil
 

 ---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Hi!
The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
 

 ---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 





 

Yahoo! Message number: 2764
Date: 17 Nov 2013 20:28:50 -0800
From:
Subject: RE: RE: RE: Grid 1520 password
text/plain; charset=utf-8

All clear! Thank you! 
 

---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 I am assuming that your 1520 has the Dallas RTC chip. Is that correct? The "invalidation configuration information; code 02" is the Phoenix BIOS code telling you the CMOS battery is dead and needs to be replaced. When the CMOS battery dies, the RTC response to that varies. In most 1520's you cannot access the hard drive. In some you still can, after pressing F1. It may be that in your particular unit, it may not recognize the RTC chip anymore, thus triggering the password response by the computer on reboot. In any case, what you must do is replace the CMOS battery by one of the methods I already outlined to you. Once you restore CMOS battery power to the RTC chip, I believe the  password question will go away. But in any case, you have to restore CMOS battery power to the RTC before you can proceed any further.
  
 Phil
 

 ---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Why then the BIOS asks for a password if a battery low?
And says at the beginning: "invalid configuration information; code 02"
and then when you reboot: "Enter password, then press RETURN"
I need to check the possibility of replacing the chip dallas before ?

 

 ---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 No, lescovez,
  
 The password is activated ONLY when you put in a different Dallas 1287A other than the one which was originally installed in the computer. Since the GRiD was used as a military computer here in the US (and still is in England), I believe this was a security protocol which may have been adopted, but the password is activated ONLY when your replace the actual RTC chip itself, not the battery. If you drill into the chip and reroute the pins by soldering them to a new battery, but still using the same chip, it shouldn't ask for the password. It never has when I performed the second option procedure, which I've done two or three times myself just to see if it worked.
  
 Phil
 

 ---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Hi!
The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
 

 ---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 





 

Yahoo! Message number: 2765
Date: 17 Nov 2013 20:30:48 -0800
From:
Subject: RE: RE: RE: Grid 1520 password
text/plain; charset=utf-8

All clear! Thank you! 
 

---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 I am assuming that your 1520 has the Dallas RTC chip. Is that correct? The "invalidation configuration information; code 02" is the Phoenix BIOS code telling you the CMOS battery is dead and needs to be replaced. When the CMOS battery dies, the RTC response to that varies. In most 1520's you cannot access the hard drive. In some you still can, after pressing F1. It may be that in your particular unit, it may not recognize the RTC chip anymore, thus triggering the password response by the computer on reboot. In any case, what you must do is replace the CMOS battery by one of the methods I already outlined to you. Once you restore CMOS battery power to the RTC chip, I believe the  password question will go away. But in any case, you have to restore CMOS battery power to the RTC before you can proceed any further.
  
 Phil
 

 ---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Why then the BIOS asks for a password if a battery low?
And says at the beginning: "invalid configuration information; code 02"
and then when you reboot: "Enter password, then press RETURN"
I need to check the possibility of replacing the chip dallas before ?

 

 ---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:

 No, lescovez,
  
 The password is activated ONLY when you put in a different Dallas 1287A other than the one which was originally installed in the computer. Since the GRiD was used as a military computer here in the US (and still is in England), I believe this was a security protocol which may have been adopted, but the password is activated ONLY when your replace the actual RTC chip itself, not the battery. If you drill into the chip and reroute the pins by soldering them to a new battery, but still using the same chip, it shouldn't ask for the password. It never has when I performed the second option procedure, which I've done two or three times myself just to see if it worked.
  
 Phil
 

 ---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:

 Hi!
The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
 

 ---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 Hi, Lescovez,
  
 The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
  
 You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
  
 www.omnipulsemedia.com/GRiD_files/Removing http://www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
  
 Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
  
 Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
  
 Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
  
 http://www.mcamafia.de/mcapage0/dsrework.htm http://www.mcamafia.de/mcapage0/dsrework.htm
  
 Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
  
 Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
  
 I hope this will help. Good luck.
  
 Phil
 ---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:


 Hello! I have a grid in 1520.
 There is a problem.
Photos attached.
1. You need to replace the battery CMOS.
2. The password is set.
First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
Thank you!
 





 

Yahoo! Message number: 2766
Date: 18 Nov 2013 12:29:30 -0800
From:
Subject: Do not load the operating system in the laptop Grid Compass 1121

When you turn on the laptop Grid 1121 yellow points appear on the screen, the system will not boot. Photos are attached. 
In what could be the reason?

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

Yahoo! Message number: 2767
Date: Mon, 18 Nov 2013 13:49:15 -0800
From: Josh Dersch
Subject: Re: [RuGRiD-Laptop] Do not load the operating system in the laptop Grid Compass 1121 [2 Attachments]
text/plain; charset=windows-1252

That does not look normal to me at all -- I'd suspect some manner of
hardware problem.  I'll have to double-check with my 1121 when I get home,
but typically it will show a small indicator at the bottom of the screen (a
tiny checkerboard that rotates) and eventually show a "GRID" logo once it's
found a valid boot device.  Are the random dots you're seeing the only
thing it does when you turn it on?

As an aside -- I notice that you have the MS-DOS ROM in your 1121,
something I've been looking for for a long time; if you have means to dump
the EPROM I'd love to get a copy.  Alternately, I can dump it, though I can
understand not wanting to send it out :).

- Josh


On Mon, Nov 18, 2013 at 12:29 PM, <lescovez@...> wrote:

>
>  [Attachment(s) <#1426ce79150212ca_TopText> from lescovez@... below]
>
> When you turn on the laptop Grid 1121 yellow points appear on the screen,
> the system will not boot. Photos are attached.
> In what could be the reason?
>
>

Yahoo! Message number: 2768
Date: Mon, 18 Nov 2013 17:09:48 -0800 (PST)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=iso-8859-1

That does seem odd.� I'd remove the "WRITE/TERM/REF" EPROM then try to boot it up.� If it doesn't boot, it is possible you're missing half of the EPROMs.� I would have expected the EPROMs to have an ODD or EVEN designation on them.
Good luck and please let us know how things turn out.
-Shawn



On Monday, November 18, 2013 4:49 PM, Josh Dersch <derschjo@...> wrote:




That does not look normal to me at all -- I'd suspect some manner of hardware problem.� I'll have to double-check with my 1121 when I get home, but typically it will show a small indicator at the bottom of the screen (a tiny checkerboard that rotates) and eventually show a "GRID" logo once it's found a valid boot device.� Are the random dots you're seeing the only thing it does when you turn it on?

As an aside -- I notice that you have the MS-DOS ROM in your 1121, something I've been looking for for a long time; if you have means to dump the EPROM I'd love to get a copy.� Alternately, I can dump it, though I can understand not wanting to send it out :).

- Josh



On Mon, Nov 18, 2013 at 12:29 PM, <lescovez@...> wrote:


>�
>[Attachment(s) from lescovez@... included below]
>When you turn on the laptop Grid 1121 yellow points appear on the screen, the system will not boot. Photos are attached.
>In what could be the reason?  

Yahoo! Message number: 2769
Date: Mon, 18 Nov 2013 17:40:31 -0800
From: Josh Dersch
Subject: Re: [RuGRiD-Laptop] Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=ISO-8859-1; format=flowed

Just double-checked on my 1129 and the screen comes up completely black 
initially after poweron, and after a couple of seconds the machine boots 
and loads in the GRID logo that's displayed (this is done as part of the 
boot process and is not built into the ROMs).

 From my experience, if the system has no OS available either externally 
or in the internal bubble memory or ROMs, it'll repeatedly display 
"Cannot Boot: Executive Not Found." (Or similar.)

I think the DOS ROM for the Compass/Compass II was a single chip, but I 
can't seem to find evidence, though I know I've seen pictures before.  
It should at least do something without any option ROMs installed at all 
-- you should still get boot diagnostic messages.

It's also possible that it's trying to boot from the internal bubble 
memory and it's been corrupted; you can force it to try to boot from an 
external floppy (even if it's not present) by holding down the "F" key 
while powering it on, after a couple of seconds it should print "Cannot 
boot: Storage medium error" repeatedly.

- Josh

On 11/18/2013 5:09 PM, Shawnerz wrote:
> That does seem odd.  I'd remove the "WRITE/TERM/REF" EPROM then try to 
> boot it up.  If it doesn't boot, it is possible you're missing half of 
> the EPROMs.  I would have expected the EPROMs to have an ODD or EVEN 
> designation on them.
> Good luck and please let us know how things turn out.
> -Shawn
>
>
> On Monday, November 18, 2013 4:49 PM, Josh Dersch <derschjo@...> 
> wrote:
>
>
> That does not look normal to me at all -- I'd suspect some manner of 
> hardware problem.  I'll have to double-check with my 1121 when I get 
> home, but typically it will show a small indicator at the bottom of 
> the screen (a tiny checkerboard that rotates) and eventually show a 
> "GRID" logo once it's found a valid boot device.  Are the random dots 
> you're seeing the only thing it does when you turn it on?
> As an aside -- I notice that you have the MS-DOS ROM in your 1121, 
> something I've been looking for for a long time; if you have means to 
> dump the EPROM I'd love to get a copy.  Alternately, I can dump it, 
> though I can understand not wanting to send it out :).
> - Josh
>
>
> On Mon, Nov 18, 2013 at 12:29 PM, <lescovez@... 
> <mailto:lescovez@...>> wrote:
>
>     [Attachment(s)
>     <https://us-mg5.mail.yahoo.com/neo/launch?.rand=1cc2vq2d3grcj#1426ce79150212ca_TopText>
>     from lescovez@... <mailto:lescovez@...> included below]
>     When you turn on the laptop Grid 1121 yellow points appear on the
>     screen, the system will not boot. Photos are attached.
>     In what could be the reason?
>
>
>
>
>
>
> 

Yahoo! Message number: 2770
Date: 18 Nov 2013 20:31:07 -0800
From:
Subject: RE: Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=utf-8

The two EPROM's shown in the picture are not BIOS chips. Only the BIOS chips are used in a manner where the ODD and EVEN addressed data are incorporated in two separate chips. No other code chips are used that way. The MSDOS EPROM operates completely on its own to load the OS, once the BIOS boots the computer up and then hands control over to the OS. The other chip is one I am not sure of, but it also appears to be completely independent in its function. I do not see the BIOS chips anywhere in the pictures. GRiD has the habit of labeling those chips clearly.
  
 Phil
 

---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 Just double-checked on my 1129 and the screen comes up completely black initially after poweron, and after a couple of seconds the machine boots and loads in the GRID logo that's displayed (this is done as part of the boot process and is not built into the ROMs).
 
 From my experience, if the system has no OS available either externally or in the internal bubble memory or ROMs, it'll repeatedly display "Cannot Boot: Executive Not Found." (Or similar.)
 
 I think the DOS ROM for the Compass/Compass II was a single chip, but I can't seem to find evidence, though I know I've seen pictures before.  It should at least do something without any option ROMs installed at all -- you should still get boot diagnostic messages.
 
 It's also possible that it's trying to boot from the internal bubble memory and it's been corrupted; you can force it to try to boot from an external floppy (even if it's not present) by holding down the "F" key while powering it on, after a couple of seconds it should print "Cannot boot: Storage medium error" repeatedly.
 
 - Josh
 
 On 11/18/2013 5:09 PM, Shawnerz wrote:
 
   That does seem odd.  I'd remove the "WRITE/TERM/REF" EPROM then try to boot it up.  If it doesn't boot, it is possible you're missing half of the EPROMs.  I would have expected the EPROMs to have an ODD or EVEN designation on them.
 Good luck and please let us know how things turn out.
 -Shawn
 
 
 On Monday, November 18, 2013 4:49 PM, Josh Dersch <derschjo@...> mailto:derschjo@... wrote:
 
 
 
 That does not look normal to me at all -- I'd suspect some manner of hardware problem.  I'll have to double-check with my 1121 when I get home, but typically it will show a small indicator at the bottom of the screen (a tiny checkerboard that rotates) and eventually show a "GRID" logo once it's found a valid boot device.  Are the random dots you're seeing the only thing it does when you turn it on?
  
 As an aside -- I notice that you have the MS-DOS ROM in your 1121, something I've been looking for for a long time; if you have means to dump the EPROM I'd love to get a copy.  Alternately, I can dump it, though I can understand not wanting to send it out :).
  
 - Josh
 
 
 
 On Mon, Nov 18, 2013 at 12:29 PM, <lescovez@... mailto:lescovez@...> wrote:
   [Attachment(s) https://us-mg5.mail.yahoo.com/neo/launch?.rand=1cc2vq2d3grcj#1426ce79150212ca_TopText from lescovez@... mailto:lescovez@... included below] When you turn on the laptop Grid 1121 yellow points appear on the screen, the system will not boot. Photos are attached. 
 In what could be the reason?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Yahoo! Message number: 2771
Date: 19 Nov 2013 08:20:09 -0800
From:
Subject: RE: RE: Do not load the operating system in the laptop Grid Compass 1121

We tried to put the EPROM's working with a laptop, but nothing has changed. Video attached. 
 

---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 The two EPROM's shown in the picture are not BIOS chips. Only the BIOS chips are used in a manner where the ODD and EVEN addressed data are incorporated in two separate chips. No other code chips are used that way. The MSDOS EPROM operates completely on its own to load the OS, once the BIOS boots the computer up and then hands control over to the OS. The other chip is one I am not sure of, but it also appears to be completely independent in its function. I do not see the BIOS chips anywhere in the pictures. GRiD has the habit of labeling those chips clearly.
  
 Phil
 

 ---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 Just double-checked on my 1129 and the screen comes up completely black initially after poweron, and after a couple of seconds the machine boots and loads in the GRID logo that's displayed (this is done as part of the boot process and is not built into the ROMs).
 
 From my experience, if the system has no OS available either externally or in the internal bubble memory or ROMs, it'll repeatedly display "Cannot Boot: Executive Not Found." (Or similar.)
 
 I think the DOS ROM for the Compass/Compass II was a single chip, but I can't seem to find evidence, though I know I've seen pictures before.  It should at least do something without any option ROMs installed at all -- you should still get boot diagnostic messages.
 
 It's also possible that it's trying to boot from the internal bubble memory and it's been corrupted; you can force it to try to boot from an external floppy (even if it's not present) by holding down the "F" key while powering it on, after a couple of seconds it should print "Cannot boot: Storage medium error" repeatedly.
 
 - Josh
 
 On 11/18/2013 5:09 PM, Shawnerz wrote:
 
   That does seem odd.  I'd remove the "WRITE/TERM/REF" EPROM then try to boot it up.  If it doesn't boot, it is possible you're missing half of the EPROMs.  I would have expected the EPROMs to have an ODD or EVEN designation on them.
 Good luck and please let us know how things turn out.
 -Shawn
 
 
 On Monday, November 18, 2013 4:49 PM, Josh Dersch <derschjo@...> mailto:derschjo@... wrote:
 
 
 
 That does not look normal to me at all -- I'd suspect some manner of hardware problem.  I'll have to double-check with my 1121 when I get home, but typically it will show a small indicator at the bottom of the screen (a tiny checkerboard that rotates) and eventually show a "GRID" logo once it's found a valid boot device.  Are the random dots you're seeing the only thing it does when you turn it on?
  
 As an aside -- I notice that you have the MS-DOS ROM in your 1121, something I've been looking for for a long time; if you have means to dump the EPROM I'd love to get a copy.  Alternately, I can dump it, though I can understand not wanting to send it out :).
  
 - Josh
 
 
 
 On Mon, Nov 18, 2013 at 12:29 PM, <lescovez@... mailto:lescovez@...> wrote:
   [Attachment(s) https://us-mg5.mail.yahoo.com/neo/launch?.rand=1cc2vq2d3grcj#1426ce79150212ca_TopText from lescovez@... mailto:lescovez@... included below] When you turn on the laptop Grid 1121 yellow points appear on the screen, the system will not boot. Photos are attached. 
 In what could be the reason?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

This is part 2 of a multi-part message.

Yahoo! Message number: 2772
Date: Tue, 19 Nov 2013 17:52:01 -0800 (PST)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] RE: RE: Do not load the operating system in the laptop Grid Compass 1121 [1 Attachment]
text/plain; charset=iso-8859-1

What happens if you remove all of the EPROMS and power it up? �Does anything change?



On Tuesday, November 19, 2013 11:20 AM, "lescovez@..." <lescovez@...> wrote:

[Attachment(s) from lescovez@... included below]


We tried to put the EPROM's working with a laptop, but nothing has changed. Video attached.�


---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:


The two EPROM's shown in the picture are not BIOS chips. Only the BIOS chips are used in a manner where the ODD and EVEN addressed data are incorporated in two separate chips. No other code chips are used that way. The MSDOS EPROM operates completely on its own to load the OS, once the BIOS boots the computer up and then hands control over to the OS. The other chip is one I am not sure of, but it also appears to be completely independent in its function. I do not see the BIOS chips anywhere in the pictures. GRiD has the habit of labeling those chips clearly.
�
Phil



---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:
>
>
>Just double-checked on my 1129 and the screen comes up completely black initially after poweron, and after a couple of seconds the machine boots and loads in the GRID logo that's displayed (this is done as part of the boot process and is not built into the ROMs).
>
>From my experience, if the system has no OS available either
      externally or in the internal bubble memory or ROMs, it'll
      repeatedly display "Cannot Boot: Executive Not Found." (Or
      similar.)
>
>I think the DOS ROM for the Compass/Compass II was a single chip,
      but I can't seem to find evidence, though I know I've seen
      pictures before.� It should at least do something without any
      option ROMs installed at all -- you should still get boot
      diagnostic messages.
>
>It's also possible that it's trying to boot from the internal
      bubble memory and it's been corrupted; you can force it to try to
      boot from an external floppy (even if it's not present) by holding
      down the "F" key while powering it on, after a couple of seconds
      it should print "Cannot boot: Storage medium error" repeatedly.
>
>- Josh
>
>
>On 11/18/2013 5:09 PM, Shawnerz wrote:
>>
>�
>>That does seem odd.� I'd remove the "WRITE/TERM/REF" EPROM then try to boot it up.� If it doesn't boot, it is possible you're missing half of the EPROMs.� I would have expected the EPROMs to have an ODD or EVEN designation on them.
>>Good luck and please let us know how things turn out.
>>-Shawn
>>
>>
>>
>>On Monday, November 18, 2013 4:49 PM, Josh Dersch <derschjo@...> wrote:
>>
>>
>>
>>
>>That does not look normal to me at all -- I'd suspect some manner of hardware problem.� I'll have to double-check with my 1121 when I get home, but typically it will show a small indicator at the bottom of the screen (a tiny checkerboard that rotates) and eventually show a "GRID" logo once it's found a valid boot device.� Are the random dots you're seeing the only thing it does when you turn it on?
>>�
>>As an aside -- I notice that you have the MS-DOS ROM in your 1121, something I've been looking for for a long time; if you have means to dump the EPROM I'd love to get a copy.� Alternately, I can dump it, though I can understand not wanting to send it out :).
>>�
>>- Josh
>>
>>
>>
>>On Mon, Nov 18, 2013 at 12:29 PM, <lescovez@...> wrote:
>>
>>�
>>>[Attachment(s) from lescovez@... included below]
>>>When you turn on the laptop Grid 1121 yellow points appear on the screen, the system will not boot. Photos are attached.
>>>In what could be the reason?
>>
>>
>>
>>
>>
>>
>

Yahoo! Message number: 2774
Date: 19 Nov 2013 20:01:11 -0800
From:
Subject: RE: Re: [RuGRiD-Laptop] RE: RE: Do not load the operating system in the laptop Grid Compass 1121 [1 Attachment]
text/plain; charset=utf-8

Nothing changes on the screen we see the same thing. 
 

---In RuGRiD-Laptop@yahoogroups.com, <shawnerz@...> wrote:

 What happens if you remove all of the EPROMS and power it up?  Does anything change?
 
 
 On Tuesday, November 19, 2013 11:20 AM, "lescovez@..." <lescovez@...> wrote:
 
 [Attachment(s) https://us-mg5.mail.yahoo.com/neo/launch?.rand=1mvtcln81id9o#TopText from lescovez@... included below] 

 We tried to put the EPROM's working with a laptop, but nothing has changed. Video attached. 
 

---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:

 The two EPROM's shown in the picture are not BIOS chips. Only the BIOS chips are used in a manner where the ODD and EVEN addressed data are incorporated in two separate chips. No other code chips are used that way. The MSDOS EPROM operates completely on its own to load the OS, once the BIOS boots the computer up and then hands control over to the OS. The other chip is one I am not sure of, but it also appears to be completely independent in its function. I do not see the BIOS chips anywhere in the pictures. GRiD has the habit of labeling those chips clearly.
  
 Phil
 

 ---In rugrid-laptop@yahoogroups.com, <derschjo@...> wrote:

 Just double-checked on my 1129 and the screen comes up completely black initially after poweron, and after a couple of seconds the machine boots and loads in the GRID logo that's displayed (this is done as part of the boot process and is not built into the ROMs).
 
 From my experience, if the system has no OS available either externally or in the internal bubble memory or ROMs, it'll repeatedly display "Cannot Boot: Executive Not Found." (Or similar.)
 
 I think the DOS ROM for the Compass/Compass II was a single chip, but I can't seem to find evidence, though I know I've seen pictures before.  It should at least do something without any option ROMs installed at all -- you should still get boot diagnostic messages.
 
 It's also possible that it's trying to boot from the internal bubble memory and it's been corrupted; you can force it to try to boot from an external floppy (even if it's not present) by holding down the "F" key while powering it on, after a couple of seconds it should print "Cannot boot: Storage medium error" repeatedly.
 
 - Josh
 
 On 11/18/2013 5:09 PM, Shawnerz wrote:
 
   That does seem odd.  I'd remove the "WRITE/TERM/REF" EPROM then try to boot it up.  If it doesn't boot, it is possible you're missing half of the EPROMs.  I would have expected the EPROMs to have an ODD or EVEN designation on them.
 Good luck and please let us know how things turn out.
 -Shawn
 
 
 On Monday, November 18, 2013 4:49 PM, Josh Dersch <derschjo@...> mailto:derschjo@... wrote:
 
 
 
 That does not look normal to me at all -- I'd suspect some manner of hardware problem.  I'll have to double-check with my 1121 when I get home, but typically it will show a small indicator at the bottom of the screen (a tiny checkerboard that rotates) and eventually show a "GRID" logo once it's found a valid boot device.  Are the random dots you're seeing the only thing it does when you turn it on?
  
 As an aside -- I notice that you have the MS-DOS ROM in your 1121, something I've been looking for for a long time; if you have means to dump the EPROM I'd love to get a copy.  Alternately, I can dump it, though I can understand not wanting to send it out :).
  
 - Josh
 
 
 
 On Mon, Nov 18, 2013 at 12:29 PM, <lescovez@... mailto:lescovez@...> wrote:
   [Attachment(s) https://us-mg5.mail.yahoo.com/neo/launch?.rand=1cc2vq2d3grcj#1426ce79150212ca_TopText from lescovez@... mailto:lescovez@... included below] When you turn on the laptop Grid 1121 yellow points appear on the screen, the system will not boot. Photos are attached. 
 In what could be the reason?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
 
 





 
 
 
 

Yahoo! Message number: 2775
Date: 28 Dec 2013 18:40:21 -0800
From:
Subject: hello
text/plain; charset=utf-8

hope i am still a member  
 had a hard time finding most of my groups 
 after yahhoo changed things that did not need changed 
 retired now so may see if i can get a couple of my 
 old 1520's to fly again  for use on rtty 
 will have to do surgery on the 1278 dallas time chips as they have all 
 died from that stupid idea of a battery in the chip deal 
 dave wd8cyv@yahoo.com

Yahoo! Message number: 2776
Date: Sat, 28 Dec 2013 19:00:34 -0800 (PST)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] hello
text/plain; charset=iso-8859-1

Good luck to you, Dave.
Please let us know if you run in to problems.
-Shawn




________________________________
 From: "wd8cyv@..." <wd8cyv@yahoo.com>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Saturday, December 28, 2013 9:40 PM
Subject: [RuGRiD-Laptop] hello






hope i am still a member�
had a hard time finding most of my groups�
after yahhoo changed things that did not need changed�
retired now so may see if i can get a couple of my�
old 1520's to fly again �for use on rtty�
will have to do surgery on the 1278 dallas time chips as they have all�
died from that stupid idea of a battery in the chip deal�
dave wd8cyv@...

Yahoo! Message number: 2777
Date: Tue, 31 Dec 2013 12:12:50 -0800 (PST)
From: Debbie Reeves
Subject: Vintage GRiD 1520 series 286 laptop

Hi -
�
I would like to introduce myself.� My name is Debbie and my only knowledge of GRiD equipment was because of a job that I had in the early 90's where GRiDs were used by servicemen and women.� I knew that the GRiD was known for its ruggedness, reliabiliyt�and durability, thus was the perfect choice for the work at hand.� It appears from my recent research that GRiD has maintained this reputation.
�
Sometime in the mid-90's my then teenage son purchased a GRiD laptop, series 1520, which was a 286.� We still have it and it is working.� It's amber screen which I recall was big in Europe back in the day, still works.� We have an extra battery pack, an auxillary keypad, and some other things, like a photocopy of a GRiD 1500 series manual.� My son�knew very little about computers at the time and for me, I learned a bit of MS-DOS back in the day and a bit about EDLIN.� I remember writing a simple program for him so that he could use the laptop for documents, etc.
�
Well, many years have passed and a couple of grandchildren later, I realize that no one here will ever use this laptop again.� I came across your group and requested to join primarily because I am looking to sell this vintage laptop and who, but perhaps a group of GRiD product fans, might be interested in it.� I realize that the architecture is dated and that I am dating myself by stating that I have a 286 working GRiD laptop in my possession for sale.� LOL!
�
I've attached a couple of pics so that you can see for yourself what I have.� Please contact me if you might be interested in this item.� You just never know.� I reside in a suburb of Baltimore, Maryland.�
�
To the moderator:� thank you for approving my request to join the group.

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

This is part 4 of a multi-part message.

This is part 5 of a multi-part message.

Yahoo! Message number: 2778
Date: 01 Jan 2014 18:41:08 -0800
From:
Subject: RE: Vintage GRiD 1520 series 286 laptop
text/plain; charset=utf-8

Dear Debbie,
 

 Glad to have you with us. Are you looking to sell the unit or just need someone to take it off your hands? The 1520's and 1530's are the usual units we do deal with on this forum. I would be interested.
 

 Phil

Yahoo! Message number: 2779
Date: Thu, 2 Jan 2014 05:33:33 -0800 (PST)
From: Debbie Reeves
Subject: Re: [RuGRiD-Laptop] RE: Vintage GRiD 1520 series 286 laptop
text/plain; charset=utf-8

I am looking to sell it.  The funny thing is I hung onto this as well as the IBM PC jr.   



>________________________________
> From: "Jeriddian@..." <Jeriddian@...>
>To: RuGRiD-Laptop@yahoogroups.com
>Sent: Wednesday, January 1, 2014 9:41 PM
>Subject: [RuGRiD-Laptop] RE: Vintage GRiD 1520 series 286 laptop
>
>
>
> 
>Dear Debbie,
>
>
>Glad to have you with us. Are you looking to sell the unit or just need someone to take it off your hands? The 1520's and 1530's are the usual units we do deal with on this forum. I would be interested.
>
>
>Phil
>
>
>  

Yahoo! Message number: 2780
Date: Fri, 10 Jan 2014 21:06:56 +0100
From: "alessandro.aria@..."
Subject: Dai un'occhiata a questo annuncio pubblicato su eBayAnnunci
text/plain; charset = "iso-8859-1"

alessandro.aria@... ti ha inviato quest'annuncio tramite eBay Annunci
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

  GRIDCASE 1590 FOR SALE

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Per vedere quest'annuncio su eBay Annunci (www.ebayannunci.it), clicca su:
http://annunci.ebay.it/annunci/computer-e-software/bari-annunci-bari/gridcase-1590/42478200

Se il tuo browser non riconosce i link riportato qui sopra, copialo e incollalo nella barra di
navigazione.

Yahoo! Message number: 2781
Date: Fri, 10 Jan 2014 12:12:58 -0800 (PST)
From: Debbie Reeves
Subject: Re: [RuGRiD-Laptop] Dai un'occhiata a questo annuncio pubblicato su eBayAnnunci
text/plain; charset=utf-8

no habla engles....gracia...



>________________________________
> From: "alessandro.aria@..." <alessandro.aria@...>
>To: RuGRiD-Laptop@yahoogroups.com
>Sent: Friday, January 10, 2014 3:06 PM
>Subject: [RuGRiD-Laptop] Dai un'occhiata a questo annuncio pubblicato su eBayAnnunci
>
>
>
> 
>
>
>Annuncio segnalato
>
>Ciao,
>
>
>alessandro.aria@yahoo.it ti ha segnalato l'annuncio Gridcase 1590 pubblicato su eBayAnnunci.
>..............................................................................................................................................
>GRIDCASE 1590 FOR SALE
>..............................................................................................................................................
>Per vedere  l'annuncio, clicca sul link qui sotto:
>http://annunci.ebay.it/annunci/computer-e-software/bari-annunci-bari/gridcase-1590/42478200
>
>
>Se hai problemi ad accedere, copia e incolla il link nella barra di navigazione.
>
>
>Grazie per aver scelto eBay Annunci
> Facile, gratis, vicino a te!
>Copyright © 2013 eBay International AG.
Tutti i diritti riservati. I marchi registrati ed i segni distintivi sono di proprietà dei rispettivi titolari.
L'uso di questo sito web implica l'accettazione delle Condizioni d'uso e delle Regole sulla privacy di Marktplaats BV.
>
>
>

Yahoo! Message number: 2782
Date: Fri, 10 Jan 2014 13:21:16 -0800
From: Jim Stephens
Subject: Re: [RuGRiD-Laptop] Dai un'occhiata a questo annuncio pubblicato su eBayAnnunci
text/plain; charset=UTF-8; format=flowed

It is a relatively new 1590 which boots windows NT.  Looks like an lcd 
screen.  mentions tempest feature.  they are asking 200 euro.

Searching for Grid on the US ebay.com showed up 2 GridCase3 systems and 
a Gridcase 1520.

Latter has an old style mono LCD screen and shows dos bootup with c: prompt

all in the 300-350 range

jim

On 1/10/2014 12:12 PM, Debbie Reeves wrote:
>
>
> no habla engles....gracia...
>
>     *From:* "alessandro.aria@..." <alessandro.aria@...>
>     *To:* RuGRiD-Laptop@yahoogroups.com
>     *Sent:* Friday, January 10, 2014 3:06 PM
>     *Subject:* [RuGRiD-Laptop] Dai un'occhiata a questo annuncio
>     pubblicato su eBayAnnunci
>
>
>
>     Annuncio segnalato
>
>     	
>
>
>     Ciao,
>
>
>     alessandro.aria@... ti ha segnalato l'annuncio *Gridcase
>     1590* pubblicato su *eBayAnnunci*.
>     ..............................................................................................................................................
>
>     /GRIDCASE 1590 FOR SALE/
>     ..............................................................................................................................................
>
>     Per *vedere * l'annuncio, clicca sul link qui sotto:
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Yahoo! Message number: 2783
Date: 18 Jan 2014 14:26:57 -0800
From:
Subject: GRiD-OS
text/plain; charset=utf-8

I found a copy of the GRiD-OS for compass series, they are floppy images, I have uploaded to files section, I also strip the image data from one set and put just the raw disk image, there is a copy of the image software in the zip file, hope this can help someone.

Yahoo! Message number: 2785
Date: 25 Jan 2014 18:21:32 -0800
From:
Subject: Grid Compass roms
text/plain; charset=utf-8

I am look for Compass rom images Gridos, Griddos etc.
  
 Thanks

Yahoo! Message number: 2786
Date: 25 Jan 2014 18:27:56 -0800
From:
Subject: Gridcase 3 roms
text/plain; charset=utf-8

I have uploaded GRiDOS and GRiDDOS roms for the gridcase 3 series to the files section

Yahoo! Message number: 2787
Date: Sat, 25 Jan 2014 18:31:28 -0800 (PST)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Gridcase roms
text/plain; charset=iso-8859-1

That's a lot.� I'm sure they will be used!
I meant to say "thanks" when you made the announcement last week.� I got busy and forgot.
Sorry about that. :-(
-Shawn



________________________________
 From: "klyball@hotmail.com" <klyball@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Saturday, January 25, 2014 9:16 PM
Subject: [RuGRiD-Laptop] Gridcase roms







I have uploaded GRiDOS and GRiDDOS roms for the gridcase series to files section

Yahoo! Message number: 2788
Date: 26 Jan 2014 14:58:17 -0800
From:
Subject: RE: Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=utf-8

Hi
 it would be great if we could get rom images of all those chips you have there :)

Yahoo! Message number: 2789
Date: Sun, 26 Jan 2014 18:50:24 -0800 (PST)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] RE: Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=iso-8859-1

Klyball,
I am sorry.� I thought I had put the 1520 EPROM image the Files area.� I guess I did not.� They are on my laptop.� I will load them later.

-Shawn



________________________________
 From: "klyball@hotmail.com" <klyball@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Sunday, January 26, 2014 5:58 PM
Subject: [RuGRiD-Laptop] RE: Do not load the operating system in the laptop Grid Compass 1121







Hi
it would be great if we could get rom images of all those chips you have there :)

Yahoo! Message number: 2790
Date: 27 Jan 2014 07:58:01 -0800
From:
Subject: RE: Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=utf-8

Hi!
How do I make images? With what hardware?

Yahoo! Message number: 2791
Date: 27 Jan 2014 09:39:02 -0800
From:
Subject: RE: Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=utf-8

Hi , I think it is important to preserve these rom files as there are the only real way to run the compass series,and there is not a lot if any archived.
 I just uploaded some floppy images for the compass series , but they are of a non dos format and the compass floppies drives are gpib .also uploaded some rom images for the gridcase 3 I just dumped.
 Back to your original question , you will need a eprom programmer to read the roms and if you want to add software one that can support the higher voltages needed for programming. You could also I am sure find someone local or in the group to do it for you. I know several members have programmers as do I. ebay seems to have a lot of programmers for a good price but I could not recommend one,
  
 But it would be great to get these roms backed up
  
 Thanks
  
 Grant (Klyball)

Yahoo! Message number: 2792
Date: 27 Jan 2014 12:25:39 -0800
From:
Subject: RE: Do not load the operating system in the laptop Grid Compass 1121

I think there is a internal problem with your machine, with no rom or os you should see something like this image. could be a lot of things but you know that at least the screen is working some what. try holding d , f , b or h at power up

This is part 2 of a multi-part message.

Yahoo! Message number: 2793
Date: 27 Jan 2014 12:40:41 -0800
From:
Subject: RE: Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=utf-8

You have complete instructions for working with a laptop?

Yahoo! Message number: 2794
Date: 27 Jan 2014 12:54:51 -0800
From:
Subject: RE: Do not load the operating system in the laptop Grid Compass 1121
text/plain; charset=utf-8

No Sorry no manual, It could be as simple as reseating all the boards, chips and connectors , that would be the first place to start.
  
  

Yahoo! Message number: 2795
Date: Wed, 5 Mar 2014 19:43:14 -0800 (PST)
From: Shawnerz
Subject: Re: Yahoo! Groups: Welcome to RuGRiD-Laptop. Visit today!
text/plain; charset=iso-8859-1

Jean,
Welcome to the group! :-)
In your email you said:�
"Hello, My name is Jean and I am a proud owner of a Gridcase 1520. I wonder how I can enter the BIOS to reset the password. Sometimes it starts up without entering a password."

I am not a expert on the password reset. �Usually, if your 1520 boots up and asks for a password, if you reboot it, it will not ask you. �There problem is the with the Dallas Semiconductor 1287 Real Time Clock. �It has an internal lithium battery. �That battery is now dead. �The RTC chip defaults to requiring a password. �There is utility to reset the chip, but most of the time, it does not work.
Perhaps someone else in the Group can give better information.
Good luck to you,
-Shawn



________________________________
 From: Jean Hallo <hallo.jean@...>
To: RuGRiD-Laptop Moderator <RuGRiD-Laptop-owner@yahoogroups.com>
Sent: Wednesday, March 5, 2014 12:35 PM
Subject: Re: Yahoo! Groups: Welcome to RuGRiD-Laptop. Visit today!



Thank you for accepting me

Jean



On Wednesday, March 5, 2014 6:28 PM, RuGRiD-Laptop Moderator <RuGRiD-Laptop-owner@yahoogroups.com> wrote:


Hello,

Welcome to the RuGRiD-Laptop group at YahooGroups, a
free, easy-to-use email group service.� Please
take a moment to review this message.

To start sending messages to members of this group,
simply send email to

RuGRiD-Laptop@yahoogroups.com

In an effort to prevent people from joining the group only to send Spam, all membership requests must be approved by a Moderator.

If you do not wish to belong to RuGRiD-Laptop, you may
unsubscribe by sending an email to

RuGRiD-Laptop-unsubscribe@yahoogroups.com

You may also visit the YahooGroups web site to modify your
subscriptions:

http://www.yahoogroups.com/mygroups


Regards,

The Moderator




Your use of Yahoo Groups is subject to https://info.yahoo.com/legal/us/yahoo/utos/terms/

Yahoo! Message number: 2796
Date: Thu, 6 Mar 2014 02:00:55 -0800 (PST)
From: Jean Hallo
Subject: Re: [RuGRiD-Laptop] Re: Yahoo! Groups: Welcome to RuGRiD-Laptop. Visit today!
text/plain; charset=utf-8

Hi Shawn,

Thanks for the reply.

In my 1520 there is a Lithium 3.6V battery from dec. 1988 which is empty.

I made a temporary solution by using a 3V Lithium CR2032 battery from a regular PC. It didn't work out but maybe soldering the battery at home wil give a better result.

Jean



On Thursday, March 6, 2014 4:43 AM, Shawnerz <shawnerz@...> wrote:

 
Jean,
Welcome to the group! :-)
In your email you said: 
"Hello, My name is Jean and I am a proud owner of a Gridcase 1520. I wonder how I can enter the BIOS to reset the password. Sometimes it starts up without entering a password."

I am not a expert on the password reset.  Usually, if your 1520 boots up and asks for a password, if you reboot it, it will not ask you.  There problem is the with the Dallas Semiconductor 1287 Real Time Clock.  It has an internal lithium battery.  That battery is now dead.  The RTC chip defaults to requiring a password.  There is utility to reset the chip, but most of the time, it does not work.
Perhaps someone else in the Group can give better information.
Good luck to you,
-Shawn



________________________________
 From: Jean Hallo <hallo.jean@yahoo.com>
To: RuGRiD-Laptop Moderator <RuGRiD-Laptop-owner@yahoogroups.com>
Sent: Wednesday, March 5, 2014 12:35 PM
Subject: Re: Yahoo! Groups: Welcome to RuGRiD-Laptop. Visit today!



Thank you for accepting me

Jean



On Wednesday, March 5, 2014 6:28 PM, RuGRiD-Laptop Moderator <RuGRiD-Laptop-owner@yahoogroups.com> wrote:


Hello,

Welcome to the RuGRiD-Laptop group at YahooGroups, a
free, easy-to-use email group service.  Please
take a moment to review this message.

To start sending messages to members of this group,
simply send email to

RuGRiD-Laptop@yahoogroups.com

In an effort to prevent people from joining the group only to send Spam, all membership requests must be approved by a Moderator.

If you do not wish to belong to RuGRiD-Laptop, you may
unsubscribe by sending an email to

RuGRiD-Laptop-unsubscribe@yahoogroups.com

You may also visit the YahooGroups web site to modify your
subscriptions:

http://www.yahoogroups.com/mygroups


Regards,

The Moderator




Your use of Yahoo Groups is subject to https://info.yahoo.com/legal/us/yahoo/utos/terms/

Yahoo! Message number: 2797
Date: Sun, 9 Mar 2014 21:04:12 -0700 (PDT)
From: Shawnerz
Subject: New Member
text/plain; charset=iso-8859-1

auzner@... wrote:

"I just got a 1535 EXP from the DeAnza Electronics Fleamarket in Cupertino, CA on Saturday. I was able to use my contacts to meet a former GRiD programmer who gave me a box of 3.5" floppies today."

Auzner:
Welcome to the group! �By any chance, do you know who that programmer was? �We have a lot questions that would be nice to know the answer to.
Thank you very much,
-Shawn

Yahoo! Message number: 2798
Date: 09 Mar 2014 23:02:35 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

Thank you for adding me to the group. I still have contact with the programmer. He worked there from 1981-1986 and primarily wrote the GRiD utility programs. I don't know much about RuGRiD group and will lurk through it for the next few weeks. I can't just throw a flurry of questions at the programmer since not everyone considers this sort of thing as a fun use of their time. I would like to help out as much as I can though. Maybe he can get me in touch with other former GRiD employees. Ideally the former GRiD people would have be very generous with their time to get these questions answered. I was very lucky this weekend to both find a GRiD and discover a family friend knows the programmer. A little about myself: I was born in 1986 and saw the movie Aliens only three/four years ago and wanted the GRiD laptop I saw them use for the sentry turret control. I especially wanted one after learning through more internet research that they used gas plasma displays and also were used by NASA in space. That lead to my IBM ThinkPad 760XD collection (which were widely used on Space Shuttle missions). That model is a lot easier (and cheaper) to find and is a platform I am more familiar with from my childhood computer use.
 I plugged in an IBM 08K8204 16V 4.5A power supply to my GRiD Gridcase 1535 EXP (with 32300 AT tray) I bought just a day and a half ago--and it boots up! It complained about the clock and then I pressed 'F1' to go to DOS. It loaded a menu which I hit '8' to exit. At the C:\ prompt I found XTGOLD on it and that reports it has a 20MB drive with 5MB free. On first power-up the screen backlight blinked and never came back on. I have to shine a flashlight on the screen to use this. Too bad it's only an LCD, but I am glad to have found a GRiD system which also happens to work. I am an electrical engineer though and already expected this to be an involving project.

Yahoo! Message number: 2799
Date: 10 Mar 2014 07:08:53 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

Dear Auzner,
Welcome to the group. We would love to see what programs and materials are on those floppy disks your programmer friend gave you. I'm sure they would be very interesting. As to the fact your unit couldn't hold the time and day, that is simply the fact your CMOS battery is dead, though as you are an electrical engineer, you probably already know that. Depending on your motherboard, it may be very easy to replace it. You can find files on this forum on how to disassemble the 1500 series of GRiD computers. If you find a Tadiran CMOS battery in the upper right hand area of the motherboard, just south of the hard drive/floppy drive unit, that is very easy to replace. If the battery is not there, you have a Dallas 1287A RTC chip which runs the CMOS function. That is more difficult to replace, but you will find files on how to deal with that as well on this forum. Look at my file list in the files section and you will find all of that. One thing I have always wanted to get was the actual BIOS code for the various 1500 series units, notably the 1520 and 1530 computers. I have looked into doing some reverse engineering of the code, but that is a very involved process, and would be easier if someone just actually had it already. Anyway, that's just a thought. You have an LCD unit, but these computers also ran a regular amber display as well, and it might be possibel to replace your LCD if it is too much trouble. But if you can fix that backlight problem, I would love to know that as well (as would Shawn, I'm sure). If you have any other questions, please feel free to ask.

Again, welcome to the group,

Phil

Yahoo! Message number: 2800
Date: 10 Mar 2014 18:55:13 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

What would be the best way to transfer the floppies here? Should they be imaged a particular way with special software or should I just grab all visible files and put them on my modern computer? Thank you for showing me the RTC replacement guide. I haven't disassembled my GRiD system yet. Where could I find a gas plasma display to swap into my system? In the mean time I will try to figure out how to make the LCD light up again.
 What are you trying to do with the BIOS? What efforts are involved to reverse engineer its BIOS? Do you have EEPROM programming hardware? Or what month/year of discussion should I read in the group logs to catch up on this subject? What could I tell the GRiD person to convince them to find and ask the other GRiD people it would be worth their time to release their BIOS source? These systems were used by the US Government just 20 years ago, so that could turn into a security subject with my name at the forefront.

Yahoo! Message number: 2802
Date: 10 Mar 2014 20:13:16 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

 Hi welcome to the group
 congratulations on your grid,it is very exiting you were able to obtain software disks, we would love to see the contents . I am interested if there is anything for the compass series , as one of my current projects is to replicate the sentry program from the aliens movie. BTW the correct model from the film is a compass 1139.
 I have wrote a version that works on later grids running dos, but the compass series was designed before the ibm pc so it is non compatible . it ran grids custom os with a very custom version of dos adapted later on.So you cannot use standard programming such as int 10h for graphics, and there is very little if any info on the compass series . You should ask you programmer if grid did the program for the moive.
 I might have a extra power module if your interested.
  
 Good luck with your GRiD
  
 1550
 1530
 1520
 GRiDcase3
 Compass 1139

Yahoo! Message number: 2803
Date: 10 Mar 2014 21:38:24 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

Hi, Auzner,
         The best way to transfer the floppies might be to create a ZIP file with all of the programs you find on the floppies, and upload the ZIP file to our files section. That can be done by any member. If you have a server, then another option is to provide a link to your server to a directory which contains those files. This is what I did with my files, only because there wasn't enough space on this forum to upload everything I have. You can grab all the files and just dump them into one directory on your modern computer, then either ZIP them or give us a link, if it is a server. If possible it would be nice to have some sort of file describing each of the files and its purpose, but we can find out eventually what they all do.
         As to a gas plasma display, I may be able to scare one up for you, but you must realize that there were three different displays that were used on these computers: 1) gas plasma 2) LCD 3) EGA. The EGA is very uncommon. I only have two of them and one isn't working. But the main thing to remember is that each of these displays uses a different video card and a different power supply, which is the power supply unit in the back of the computer behind the HDD/floppy disk unit. The disassembly instructions will show you how to get it out, which actually is very easy. The reason for the different power supplies is that each of the different types of display require different output voltages to power the screens. So it has to be a combination of display screen, video card, power supply. You can see the difference on the video cards. Gas plasma has two sockets for extra EPROMS. LCD has one socket. The EGA has none.
         As to the BIOS, I have an EPROM programming unit and spare BIOS chips for programming. Both Shawn and I have done some work on this, mostly on reprogramming the computer to accept new hard drives. The instructions for this are also in the files section. The original BIOS had tables in it to accept only a few particular hard drives made by the Conner company. These were the CP344, CP3042, CP3044, and the CP3104 (10MB, 20MB, 40MB, and 100MB HDD respectively. I think I got this right [?]....). We were able to adjust the tables and data in the BIOS to accept larger HDD, notable a CPS420A (420MB), and CP30174 (170 MB), and a couple of others. Due to the limitations of the BIOS, we wouldn't be able to go over about 540 MB in capacity. We altered the BIOS, burned new BIOS chips and they worked perfectly well. So far, we have only tried different Conner hard drives, which remarkably are still avaiIable out there. We have a much harder time trying to find the one MB RAM sticks. We haven't tried a hard drive from a different manufacturer yet. The discussions on all this are in the messages of the forum, but it has been years and many different threads, and I can't remember exactly when all of these discussions took place.
         I also looked at a problem we had with 1520's where replacing the Dallas RTC chip resulted in a feedback loop that would not let the computer boot. With a programmer, I discovered the glitch and I changed about three BIOS instructions which then allowed the computer to boot up. My main reason for getting the full BIOS code is mainly archival at this point, but in the future it may be possible to reprogram the BIOS (I have had a smattering of assembly language experience) to make the computer do more, especially in terms of connecting with more modern protocols. I would really be interested in working with it in that way. Shawn is presently looking into trying to boot the computer off of a flash drive, and this might help him too. He has been working on that for a while.
         As to the the fact these computers were used by the government in the 1980's, that is true, however they were also used by civilians. I bought my first 1530 in 1986, and I still have it, albeit rebuilt. So the standard files and the BIOS (which really is just a basic Phoenix BIOS, altered slightly for this computer), are not a security risk. Even if they were, this technology is 30 years old and no longer poses any such threat, so I seriously doubt there would be any problems in this regard. You can check with your GRiD guy to make sure of that. I hope this helps.
 

 Phil

Yahoo! Message number: 2804
Date: 11 Mar 2014 03:38:40 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /GRiD Floppies/GRiD Floppies.zip
  Uploaded by : auzner <auzner@...>
  Description : Seven floppy disks from a GRiD programmer's closet

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRiD%20Floppies/GRiD%20Floppies.zip

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

auzner <auzner@...>

Yahoo! Message number: 2805
Date: 11 Mar 2014 03:39:42 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /GRiD Floppies/GRiD_floppies_file_list.htm
  Uploaded by : auzner <auzner@...>
  Description : Contents of the disks listed

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRiD%20Floppies/GRiD_floppies_file_list.htm

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

auzner <auzner@...>

Yahoo! Message number: 2806
Date: 11 Mar 2014 03:40:07 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /GRiD Floppies/GRiD Floppies File List.docx
  Uploaded by : auzner <auzner@...>
  Description : Contents of the disks listed

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRiD%20Floppies/GRiD%20Floppies%20File%20List.docx

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

auzner <auzner@...>

Yahoo! Message number: 2807
Date: 11 Mar 2014 03:42:09 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /GRiD Floppies/GRiD Sticker Scan.png
  Uploaded by : auzner <auzner@...>
  Description : A 1.5x2" GRiD sticker with a Mountain View address

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRiD%20Floppies/GRiD%20Sticker%20Scan.png

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

auzner <auzner@...>

Yahoo! Message number: 2808
Date: 11 Mar 2014 03:46:13 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /GRiD Floppies/GRiD Business Card.jpg
  Uploaded by : auzner <auzner@...>
  Description : Business card with the first GRiD logo and a Santa Clara address

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRiD%20Floppies/GRiD%20Business%20Card.jpg

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

auzner <auzner@...>

Yahoo! Message number: 2809
Date: 11 Mar 2014 04:45:50 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

I've uploaded the contents of all 7 GRiD floppies the programmer gave to me along with a dir /S list. I put them in a new folder on this Yahoo group (I am new to Yahoo's group system). Most of it appears to be assembly code and has some commenting.
 

 How do you know that the gas plasma display needs a different video card and power supply? Do the repair manuals discuss this? Is it just a matter of swapping chips and having different voltages?
 

 It looks like the CP344 you mentioned thankfully at least uses IDE on ATA (I've never NOT used this). So the 504MB limit is because of it only supporting 20-bit CHS. http://web.inter.nl.net/hcc/J.Steunebrink/bioslim.htm You seek to add interrupt 13h support for 24-bit LBA and use a 7.8GB drive? Or translating to ECHS? You have sources from Phoenix to implement this or are writing it all yourself? Are you certain GRiDOS can support this? Or is this only for the MS-DOS based GRiD systems?
 

 1MB RAM modules might be possible by finding the part for the ICs instead of a "GRiD module" itself.
 

 It looks like some people are cutting into the RTC and adding an external battery?

Yahoo! Message number: 2810
Date: 11 Mar 2014 06:55:49 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

That's great, Auzner,
        I'll take a look at those files when I can. The different voltages required for the different screens was commented on somewhere, but I can't remember exactly where as it has been several years since I found that out. I think it was in the large technical service manual that I have made available to the members of the forum from my server, but which is also available in the files section in parts. But I did read it somewhere in the manuals, I'm sure.
        I have not looked that closely at the power supplies to determine if there is a difference of just one chip being responsible for the different voltages, but that is certainly possible. It was just convenient to swap out the whole power supply units as it is so easy to do.
        As to the HDD protocol, it is actually MFM, not IDE. These GRiD's did not use IDE at all in those early days. You probably know, but MFM used the same 40 pin connector as IDE. But these drives can be recognized by IDE, although their formatting would not. I've tried that before, hooking some of these old Conners to a more modern computer.
        You are correct about the 504 MB limit due the BIOS and OS only supporting a 20 bit CHS protocol. That is one thing, as well as the INT 13H, I was interested in changing or adding to support larger Conner HDD's on these computers. At present, the only way I can defeat this is by adding a parallel to SCSI adapter to the parallel port, which has software (from Adaptec) which allows for LBA addressing and INT 13H use. But that requires an external HDD of course.
        I would have to be careful in adding code due to the limit of capacity of the BIOS chips, but I think there is extraneous code in the old BIOS that is no longer needed and that can be eliminated to make room. I have not considered translation to ECHS, but it is a natural progression, isn't it? It's worth thinking about.
        I don't have any sources from Phoenix directly. But I haven't tried looking for any of them yet. Mostly, I think I would end up doing the programming on my own, or getting help from professional programmers when I can. Despite its complexities, I actually like working with assembly despite the fact I'm really a bit of a tyro at it. I think GRiDDOS can be supported. It really has very little difference from MSDOS. I believe the core code is unaltered actually. My biggest problem now is time, which I have very little to devote to these pursuits.
        The 1 MB RAM sticks have been almost impossible to find. The first problem is that they are SIPP modules, which was a very short lived system which quickly gave way to SIMM's. The predominant capacity was 256K, and the 1MB barely got into production before they change everything over to the SIMM's. Secondly, the sticks that must be used in the GRiD's must be the smaller, low profile sticks which only use two or three sideways chips. When I do find 1 MB sticks, they are almost always high profile sticks with eight or nine vertical chips. These are too big to fit in the GRiD's. I have often wondered if we could take the 256K sticks and simply add another chip to turn them into 1 MB sticks as some of the two chip sticks have a blank space on them where another chip could be added, but I don't know which chip to get to do that, and I would have to be extremely careful in soldering those chips on. But I would love to find out and try. I was hoping to find a way to permanently pin an adapter in there and fit two 4 MB SIMM units in flat, but I would have to find out how to design that, and I am not knowledgeable enough in EE to do that.
        The Dallas 1287A chips can be hard for some people to find, plus, some people just don't want to keep changing out the chip on the motherboard each time the CMOS battery dies. So there is the option of using a dremel tool to carve away the epoxy case of the chip to isolate the old CMOS battery and then attach wires to the terminals and therefore connect a new 3.6V battery to it that they affix somewhere else in the case. I've done that on two or three of my units. The instructions are also included in our files section.

Phil

Yahoo! Message number: 2811
Date: 13 Mar 2014 01:25:49 -0700
From:
Subject: GRiD Compass Manuals & Software on eBay
text/plain; charset=utf-8

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=121291899819&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=121291899819&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en I have access to a color rapid feed-scanner at work if nobody is going to bid on this. Also I have 5.25" floppy drives to transfer this with. Let me know so we're not paying more just to pool the same things.

Yahoo! Message number: 2812
Date: Thu, 13 Mar 2014 01:42:45 -0700
From: Jim Stephens
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
text/plain; charset=UTF-8; format=flowed

On 3/13/2014 1:25 AM, auzner@... wrote:
>
>
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=121291899819&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en 
>
> I have access to a colorrapid feed-scanner at work if nobody is going 
> to bid on this. Also I have 5.25" floppy drives to transfer this with. 
> Let me know so we're not paying more just to pool the same things.
>
>
> 
Part of the puzzle might be answered from another of his auctions, a 
Grid Compass 1129.  It appears to be a yellow plasma screen.

$350 for a compass that boots up

Compass Auction:

http://www.ebay.com/itm/121291906279

Software sale from above (trimmed URL):

http://www.ebay.com/itm/121291899819

In case the original one above didn't work for you.

thanks
Jim

PS.  McMaster Carr catalog is up to $68 bucks?  What am I missing?

Yahoo! Message number: 2813
Date: Thu, 13 Mar 2014 04:02:31 -0700 (PDT)
From: Debbie Reeves
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay

Hi -
 
I have a GRiD 1520 that works and would like to sell it.  If anyone is intersted, please respond to me directly with your offering price.  I have attached a few pics. Thanks.
 
PS.  I live in the DC/Baltimore area


>________________________________
> From: "auzner@..." <auzner@...>
>To: RuGRiD-Laptop@yahoogroups.com
>Sent: Thursday, March 13, 2014 4:25 AM
>Subject: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
>
>
>
> 
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=121291899819&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en
>I have access to a color rapid feed-scanner at work if nobody is going to bid on this. Also I have 5.25" floppy drives to transfer this with. Let me know so we're not paying more just to pool the same things.
>
>
>

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

This is part 4 of a multi-part message.

Yahoo! Message number: 2814
Date: 13 Mar 2014 16:28:11 -0700
From:
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
text/plain; charset=utf-8

Yes, I saw that other ebay listing, but it's a $378 starting price. I much prefer to search fleamarkets and craigslist for years to get a realistic price. Starting prices on ebay are always inflated to the price of new modern laptops. These have a high ownership privilege cost there for some reason. These are 30 years old and modern $40 microcontroller kits have more power and features. You folks are the only ones I've found online who research and restore these to give them a greater purpose than only being a collectible-brick-widget to stash in the garage.

Yahoo! Message number: 2815
Date: 13 Mar 2014 20:19:23 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

Regarding GRiD memory:
 Based on what you tell me and what I'm seeing briefly online about SIPPs, it might be possible to recreate more SIPP modules today. I need to do more research, but right now I believe if I can find enough datasheets and documentation on SIPP and SIMM memory ICs it could be possible to harvest old SIMM ICs to convert into SIPP modules with new custom PCBs. Or even do as you said and simply populate modules which have empty spaces. The SIPP itself just looks like package adapter and isn't anything special itself; it just realigns pins a different way. There's no guarantee that these modules would be Tempest certified or radiation-hardened, but they'd give the GRiD systems more memory. I don't have much experience with PCB layout, but I have a contact I can submit designs to for critique.
 Notes I find useful:
 ·         Processor memory addressing limits:
 o    80186 (20-bit) = 1MB
 o    80286 (24-bit) = 16MB
 o    80386SX (24-bit) = 16MB
 o    80386DX (32-bit) = 4GB
 ·         DOS extended memory is anything above 2^20 (1MB) using the XMS API HIMEM.SYS driver.
 ·         Usually more than 640 kB gets remapped above 2^20 anyhow.
 ·         Only protected mode can use extended memory directly.
 ·         XMS 2.0 allows up to 64MB [26-bit = log(64MB)/log(2)]
 ·         XMS 3.0 allows up to 4GB [32-bit]
 RTC:
 Jameco lists the DS1287 as a part they might have in stock. Another project would be to see if there's any pin-compatible modern replacement. A deeper dive into that would be programming and adapting a microcontroller/PLC/FPGA to emulate the part—probably not going to go that far with this.
 BIOS
 Programming is sort of my main weakness. I would learn just enough here and there to get assignments done, but never really dabbled with it enough on my own to go off and experiment. My current job also doesn’t require much programming knowledge. Assembly language is generally avoided by everyone! I’m more interested in interfacing hardware and software, but it would be great if I could also fill in the gaps by writing my own code. Can’t really help at all towards development here other than asking for the source.
 Storage
 I am not familiar with with non-IDE drives. I’ll need time to learn about MFM.
  
 My GRiD works, and for now I'm mostly concerned about the RTC and backlight getting restored. The GRiD programmer doesn’t even know I’ve been able to power on my system yet. I’ll try to call him this weekend to give an update and ask how I could find out more about the Compass systems and BIOS source code towards supporting int 13h.

Yahoo! Message number: 2816
Date: 13 Mar 2014 23:08:36 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

        We would love to find some way to manufacture our own SIPP's. The main way this has been tried in the past is that several members of this group have tried to take SIMM's and solder the pins on to turn them into SIPP's, but this has generally resulted in complete failure. I suspect part of the problem is finding the right pins to use for this, which would have to be manufactured from the right metal with the right malleability/stiffness to function correctly. The attempts to do this involved taking pins off old 256K SIPP's, but it still did not work. Any help in this direction would be greatly appreciated. Your idea of using new PCB's designed to this specific purpose is a step up in the right direction, I think. If you have the schematic for the memory (I know it can't be that difficult, but I don't know enough to design it), or you can design it, production of a specific PCB could be attempted. The pins are what worry me the most, but I am hoping that they could be obtained somewhere independently. 
         There used to be a company called Pyramid which made an adapter which fit into the RAM pins of the computer and which allowed one to fit two 4MB or 8MB RAM sticks, SIMM's I believe. I never could find one of those kits or find anything about it on the internet. But I think that would be a great way to do this. If one could make an adapter which would fit into those pin holes, and which in turn could be fitted with SIMM's, one would never have to worry about breaking the pins as they would stay in permanently.
         On the processor memory addressing limits, you are correct that theoretically, the GRiD should be able to maximize to 16 MB memory. I would love to find out. The GRiD people themselves officially recommended no more than a maximum of 8 MB RAM for their 1530 series, and in fact recommended no more than 4 MB for the 1520, although we know 8 MB works perfectly well in a 1520. One or two of my 1520's have 8MB RAM. I believe these computers could maximize to 16 MB if we could find a way to fit the RAM onto the computer. One addendum to your note. The 1530 series computers did indeed use up to 80386DX chip, capable of addressing up to 4Gb, but the motherboard was still only a 16 bit machine, therefore we are still limited to 16 MB RAM in any case.
         On the RTC's, the 1287 and the 1287A are identical with the exception that the 1287A has a RESET capability of its memory bits. The 1287 does not. I have always bought the 1287A chips because if I use a new chip in a GRiD, especially a 1520, I always like to reset the bits before I turn the computer on for the first time. Dallas Semiconductor does make a modern replacement for the 1287A, called the 12887A, however you cannot use this chip in the GRiD's. The reason is because the 12887A has a 64 bit capacity memory, whereas the 1287 and 1287A only have 32 bits. If you try to use the 12887A, the BIOS of the computer cannot address it correctly and it becomes useless, and the computer simply won't boot. The only thing that will work is a 1287 or 1287A. It may be that if we could re-engineer the BIOS, we can rewrite the code for addressing the RTC so that a 12887A would work, but not with the original BIOS.
         I must admit I am just as weak on Assembly, mainly because I can't spend the time like I used to do on it. It's been 25 years since I actively worked with it. Despite the fact it is insanely difficult to deal with, that is part of the allure I find in it.. I hope one day I will be able to find the time to work with it again.
         I wish I knew more about the MFM and RLL protocols myself. I only know they were the predecessors of IDE. Good luck. Let me know if the backlight problem doesn't get solved. Then I can see about possibly obtaining a gas plasma unit.
 

 Phil

---In RuGRiD-Laptop@yahoogroups.com, <auzner@...> wrote :


 Regarding GRiD memory:
 Based on what you tell me and what I'm seeing briefly online about SIPPs, it might be possible to recreate more SIPP modules today. I need to do more research, but right now I believe if I can find enough datasheets and documentation on SIPP and SIMM memory ICs it could be possible to harvest old SIMM ICs to convert into SIPP modules with new custom PCBs. Or even do as you said and simply populate modules which have empty spaces. The SIPP itself just looks like package adapter and isn't anything special itself; it just realigns pins a different way. There's no guarantee that these modules would be Tempest certified or radiation-hardened, but they'd give the GRiD systems more memory. I don't have much experience with PCB layout, but I have a contact I can submit designs to for critique.
 Notes I find useful:
 ·         Processor memory addressing limits:
 o    80186 (20-bit) = 1MB
 o    80286 (24-bit) = 16MB
 o    80386SX (24-bit) = 16MB
 o    80386DX (32-bit) = 4GB
 ·         DOS extended memory is anything above 2^20 (1MB) using the XMS API HIMEM.SYS driver.
 ·         Usually more than 640 kB gets remapped above 2^20 anyhow.
 ·         Only protected mode can use extended memory directly.
 ·         XMS 2.0 allows up to 64MB [26-bit = log(64MB)/log(2)]
 ·         XMS 3.0 allows up to 4GB [32-bit]
 RTC:
 Jameco lists the DS1287 as a part they might have in stock. Another project would be to see if there's any pin-compatible modern replacement. A deeper dive into that would be programming and adapting a microcontroller/PLC/FPGA to emulate the part—probably not going to go that far with this.
 BIOS
 Programming is sort of my main weakness. I would learn just enough here and there to get assignments done, but never really dabbled with it enough on my own to go off and experiment. My current job also doesn’t require much programming knowledge. Assembly language is generally avoided by everyone! I’m more interested in interfacing hardware and software, but it would be great if I could also fill in the gaps by writing my own code. Can’t really help at all towards development here other than asking for the source.
 Storage
 I am not familiar with with non-IDE drives. I’ll need time to learn about MFM.
  
 My GRiD works, and for now I'm mostly concerned about the RTC and backlight getting restored. The GRiD programmer doesn’t even know I’ve been able to power on my system yet. I’ll try to call him this weekend to give an update and ask how I could find out more about the Compass systems and BIOS source code towards supporting int 13h.

Yahoo! Message number: 2817
Date: Tue, 18 Mar 2014 20:09:25 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay [3 Attachments]
text/plain; charset=iso-8859-1

Did you sell this yet?
-Shawn


________________________________
 From: Debbie Reeves <debbiereeves108@...>
To: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Sent: Thursday, March 13, 2014 7:02 AM
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay [3 Attachments]



[Attachment(s) from Debbie Reeves included below]


Hi -
�
I have a GRiD 1520 that works and would like to sell it.� If anyone is intersted, please respond to me directly with your offering price.� I have attached a few pics.�Thanks.
�
PS.� I live in the DC/Baltimore area

Yahoo! Message number: 2818
Date: Wed, 19 Mar 2014 04:32:14 -0700 (PDT)
From: Debbie Reeves
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
text/plain; charset=utf-8

No.   I am not sure how to price it.  I am not working and can't be in a position to give it away, so I have had a lot of interest and when I ask folks to respond with a reasonable and fair offer, they don't.  I figured that it will happen when it does.
 
If you are interested, (you wrote in January and said that you were working on some issues) let me know and please respond with a fair and reasonable offer that we both can feel good about.  Thanks.


>________________________________
> From: Shawnerz <shawnerz@...>
>To: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
>Sent: Tuesday, March 18, 2014 11:09 PM
>Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
>
>
>
> 
>Did you sell this yet?
>-Shawn
>
>
>
>________________________________
> From: Debbie Reeves <debbiereeves108@...>
>To: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
>Sent: Thursday, March 13, 2014 7:02 AM
>Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay [3 Attachments]
>
>
>
>[Attachment(s) from Debbie Reeves included below]
>
>
>Hi -
> 
>I have a GRiD 1520 that works and would like to sell it.  If anyone is intersted, please respond to me directly with your offering price.  I have attached a few pics. Thanks.
> 
>PS.  I live in the DC/Baltimore area
>
>
>
>
>

Yahoo! Message number: 2819
Date: Wed, 19 Mar 2014 12:40:01 +0000
From: shawnerz@...
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
text/plain; charset="utf-8"

Debbie,
Thanks for the response.  My feeling is no one is responding because they don't know what you're expecting and they don't want to insult you.
For my Grid's (3, 1520's; 2,1080's; a 1550), I didn't pay more than $50 a piece for them. I saw the links on Ebay and obviously some people are paying more than $350.  So, it's hard to come up with an offer when I don't know what you're expecting.
If you absolutely need a price, I'll start by offering the most of what I paid for my others at $50. But, my feeling is you are looking to get a lot more.
-Shawn    

-----Original Message-----
From: Debbie Reeves <debbiereeves108@yahoo.com>
Sender: RuGRiD-Laptop@yahoogroups.com
Date: Wed, 19 Mar 2014 04:32:14 
To: RuGRiD-Laptop@yahoogroups.com<RuGRiD-Laptop@yahoogroups.com>
Reply-To: RuGRiD-Laptop@yahoogroups.com
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay

No.   I am not sure how to price it.  I am not working and can't be in a position to give it away, so I have had a lot of interest and when I ask folks to respond with a reasonable and fair offer, they don't.  I figured that it will happen when it does.
 
If you are interested, (you wrote in January and said that you were working on some issues) let me know and please respond with a fair and reasonable offer that we both can feel good about.  Thanks.


>________________________________
> From: Shawnerz <shawnerz@yahoo.com>
>To: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com> 
>Sent: Tuesday, March 18, 2014 11:09 PM
>Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
>  
>
>
>  
>Did you sell this yet?
>-Shawn
>
> 
>
>________________________________
> From: Debbie Reeves <debbiereeves108@yahoo.com>
>To: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com> 
>Sent: Thursday, March 13, 2014 7:02 AM
>Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay [3 Attachments]
>  
>
>
>[Attachment(s) from Debbie Reeves included below] 
>
>
>Hi -
> 
>I have a GRiD 1520 that works and would like to sell it.  If anyone is intersted, please respond to me directly with your offering price.  I have attached a few pics. Thanks.
> 
>PS.  I live in the DC/Baltimore area
>
>     
> 
>
>    

Yahoo! Message number: 2820
Date: 19 Mar 2014 10:03:14 -0700
From:
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
text/plain; charset=utf-8

Debbie,         I have bought many 1500 series computers off of eBay.  My experience is that a working 1520 with no serious performance or damage issues has gone from anywhere from $75 (uncommon) to as high as $175 or even $200 (also uncommon). The average price I have paid tends to be about $110 to $125 plus shipping. A RAM higher than 2MB will command a higher price, as will added books, carrying case, and/or peripherals, such as a floppy drive. The guy trying to sell that 1520 on eBay for $349 will never get that price. He's been trying to sell that thing for a very long time now.  Those of us who know these computers know better. Hope this helps. 

Yahoo! Message number: 2821
Date: Wed, 19 Mar 2014 11:36:37 -0700 (PDT)
From: Debbie Reeves
Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
text/plain; charset=utf-8

Sure does.  Thanks.



>________________________________
> From: "Jeriddian@..." <Jeriddian@...>
>To: RuGRiD-Laptop@yahoogroups.com
>Sent: Wednesday, March 19, 2014 1:03 PM
>Subject: Re: [RuGRiD-Laptop] GRiD Compass Manuals & Software on eBay
>
>
>
> 
>Debbie,
>        I have bought many 1500 series computers off of eBay.  My experience is that a working 1520 with no serious performance or damage issues has gone from anywhere from $75 (uncommon) to as high as $175 or even $200 (also uncommon). The average price I have paid tends to be about $110 to $125 plus shipping. A RAM higher than 2MB will command a higher price, as will added books, carrying case, and/or peripherals, such as a floppy drive. The guy trying to sell that 1520 on eBay for $349 will never get that price. He's been trying to sell that thing for a very long time now.  Those of us who know these computers know better. Hope this helps. 
>
>
>

Yahoo! Message number: 2822
Date: Thu, 20 Mar 2014 23:49:11 +0000 (GMT)
From: Athan DE JONG
Subject:
text/plain; charset=iso-8859-1

HI everybody

My name is athan,I Collect vintage computers for years now most of them are commodors &
 apples.
I always dreamed about having a grid an finaly managed to get one.
Now that i'm the happy owner of a gridcase 3 and need some help to get it work.

When i start the grid on the Eprom placed in the external rom socket a program called "CODES (United stats postal service)" starts up.
A 3 pages menu shows up :
1 IOCS
2RPW
3ODIS
4 city carrier coast system ......

But i do not own the floppys containig this softs. May be someone out there can help with some disk IMG ?

Any way i am happy to be here in the group, and hope to share some vintage computing hours :)

�

To the moderator:� thank you for approving my request to join the group.

Kind regards , athan

Yahoo! Message number: 2823
Date: 20 Mar 2014 20:25:10 -0700
From:
Subject: Re:
text/plain; charset=utf-8

Welcome to the forum, Athan,
 And congratulations on the Gridcase3. This forum does cover a lot about GRiD computers, but admittedly the majority of our work and knowledge is on the 1500 series units, which are DOS computers. The earlier Gridcase3 and the compass models were older than that and were CP/M computers, which I am sure you already know, and I don't think there are hardly any members here who worked with them, but I could be wrong. I do not remember any of the files in the files section  dealing with CP/M software, I hope that one of our members can help you with this, though. Good luck.
 

 Phil

Yahoo! Message number: 2824
Date: 20 Mar 2014 21:32:20 -0700
From:
Subject: Re:
text/plain; charset=utf-8

Hi and welcome
  
 I uploaded 4 rom images for the gridcase3 in the file section its the grid os and grid dos for the gridcase 3
  
 Good luck

Yahoo! Message number: 2825
Date: Fri, 21 Mar 2014 07:36:19 +0000 (GMT)
From: Athan DE JONG
Subject: Re: [RuGRiD-Laptop] Re:
text/plain; charset=utf-8

Hi Phil

Thanks for reply !

My Grid case is running MSdos 2.1 on internal ROM. So at This point of my research i can not tell if it is the original OS as i can not get the serial/model number of the computer. A US POSTAL metallick sticker is covering these infos and i'm not sure about to remove it properly. But i have read around That it schould run msdos/grid os see : http://www.sinasohn.com/cgi-bin/clascomp/bldhtm.pl?computer=gridcs3
 Also only one EPROM is pluged in the external ROM SOCKETS may be the soft i'm looking for was on the 3 EPROMS i miss on the computer.

Also i miss the EPROM "plastic inserts" that allows easy plug of Eprom in external ROM socket. If someone have some for sale ??


Kind regards, athan




Le Vendredi 21 mars 2014 5h32, "klyball@..." <klyball@...> a écrit :

 
Hi and welcome
 
I uploaded 4 rom images for the gridcase3 in the file section its the grid os and grid dos for the gridcase 3
 
Good luck

Yahoo! Message number: 2826
Date: 21 Mar 2014 05:17:03 -0700
From:
Subject: RE: New Member
text/plain; charset=utf-8

Hey...
  
 It is possible to make your own sipps but it requires a bit of surgery.  I successfully made my own using the smallest 1mb 3-chip simms I could find. It requires grinding the printed circuit boards down to fit the limited width and soldering on pins of your own (or you could hardwire them in).  The first 4mb set I made up by using some pins made by mill-max, though I long since forgot the part number.  The next 12mb I made were by reusing the pins off of 256k sipps, but expect to lose a few in the process.  That's usually not a big deal as you can leave off the unused address and parity pins and still get by. Keep in mind only 8mb is possible because they cheaped out on the motherboard and didn't run all the address lines thru the vlsi chipset for whatever reasons. 
  
 How is your 1535 equipped screen-wise? I have on with the reflective (and backlit) cga screen while the other has a pretty well trashed vga screen (backlight is pretty dim and there are fractal-ish looking stains on the screen), so I usually use an external monitor on that one.  Both setups have their faults but I tend to like the CGA one better.  Strangely, the CGA has double the video ram of normal cga so it has 640x400 resolution making for nicer characters.  As mentioned its reflective, so its great indoors and out. The other bonus is with cga you get 2 rom sockets, so I could make boot eproms with a pair of 27c010's with GRiDos 3.3, mode.exe, sys, format, laplink, laplink editor and a vt100 term program on there. That machine is floppy based as well. The vga one on the other hand is hard drive based and does not have the eprom capability.  The vga is nothing to write home about either; it only has 64k of memory and can't even do 800x600 1-bit because they left out the clocking circuitry! It's good enough to run DOOM, but I could only get x-windows to run 640x480x1 bit. 
  
 Do you have the mode.exe utility on your hard drive? If so have you given "mode backlite=on" or "mode backlite=off" a try? That's how I control my backlights from DOS.  I actually had my first 1535 for quite some time before I realized it even had a backlight.  Once you turn it on, it stays on for all subsequent bootups, so it is possible to have backlighting on in linux.  They did not think to put in a bios key shortcut to control it, so the only chance you have to control it is when in dos.  
  
 Did you get the expansion unit with your 1535? That opens up serious possibilities.  I tend to use my cga 1535 a lot more than the vga/hd one and boot linux on it over a 3com netcard with a boot rom on it.  I have a Cyrix 486DLC40/487 in it as well, but can only run it at 20MHz. Gives a very nice boost over their extremely conservative 386DX16 running at 12.5MHz!  If you're handy with an iron, I would highly suggest yanking the 25MHz oscillator and putting a socket in so you can pop a 32MHz osc in and run at the 16MHz the processor was meant to run at.  There are other issues to consider when going faster or giong cyrix, but the jump to 16MHz is cake. 
  
 Thanks for posting all the goodies! Can't wait to look thru em! 
  
 -Kevin

Yahoo! Message number: 2827
Date: 21 Mar 2014 07:58:29 -0700
From:
Subject: Re:
text/plain; charset=utf-8

Hi

The 4 ROM Images can be written by an actuall ROM burner i think right ?
But my problem will be the plastic supports for the roms, is there a workarround to get the eproms in place without the plastic supports ?
I prefer to ask people who are used to this computer instead of breaking something !

Kind regards

Yahoo! Message number: 2828
Date: Fri, 21 Mar 2014 11:14:57 -0400
From: Beau Walker
Subject: New member with a 1520
text/plain; charset=ISO-8859-1

I just picked up a 1520 and repaired the Dallas chip.  Which file(s) do I
need to download so I can access the hard drive again on this unit?



-- 
Sent from my time machine

Yahoo! Message number: 2829
Date: 21 Mar 2014 09:50:15 -0700
From:
Subject: Re: New member with a 1520
text/plain; charset=utf-8

Hi, Beau, Welcome to the forum.  If you have repaired your Dallas RTC chip., there should be nothing else needed. Re-establishing the battery voltage should reset the chip. All you have to do is boot the machine up.  It might not boot up on the first try, so if you cannot access the hard drive on the first try,  just keep rebooting until the computer does finally recognize it.  If, however, you cannot get the hard drive to be recognized, after two or three tries,  you may then have a bad hard drive, as these old Conner hard drives are notorious for failing over time.  How did you repair the RTC BTW?
 Phil. 

Yahoo! Message number: 2830
Date: Fri, 21 Mar 2014 13:05:08 -0400
From: Beau Walker
Subject: Re: [RuGRiD-Laptop] Re: New member with a 1520
text/plain; charset=ISO-8859-1

I dremelled down the side of the chip and soldered a 3v battery holder to
the exposed connections.  I went by a how-to I found online.

It the system still boots up saying "Invalid config info 02", "Strike F1 to
continue", does that indicate that I didn't do it right?


On Fri, Mar 21, 2014 at 12:50 PM, <Jeriddian@...> wrote:

>
>
> Hi, Beau,
> Welcome to the forum.  If you have repaired your Dallas RTC chip., there
> should be nothing else needed. Re-establishing the battery voltage should
> reset the chip. All you have to do is boot the machine up.  It might not
> boot up on the first try, so if you cannot access the hard drive on the
> first try,  just keep rebooting until the computer does finally recognize
> it.  If, however, you cannot get the hard drive to be recognized, after two
> or three tries,  you may then have a bad hard drive, as these old Conner
> hard drives are notorious for failing over time.  How did you repair the
> RTC BTW?
> Phil.
>
>
>



--
Sent from my time machine

Yahoo! Message number: 2831
Date: Fri, 21 Mar 2014 13:17:36 -0400
From: Beau Walker
Subject: Re: [RuGRiD-Laptop] Re: New member with a 1520
text/plain; charset=ISO-8859-1

Well I made a dos boot disk, set the the date, shut it off and unplugged it
and it lost the date, so I'm assuming I didn't do something right.  FDISK
finds no fixed disks.


On Fri, Mar 21, 2014 at 1:05 PM, Beau Walker <arrowrunner@...> wrote:

> I dremelled down the side of the chip and soldered a 3v battery holder to
> the exposed connections.  I went by a how-to I found online.
>
> It the system still boots up saying "Invalid config info 02", "Strike F1
> to continue", does that indicate that I didn't do it right?
>
>
> On Fri, Mar 21, 2014 at 12:50 PM, <Jeriddian@...> wrote:
>
>>
>>
>> Hi, Beau,
>> Welcome to the forum.  If you have repaired your Dallas RTC chip., there
>> should be nothing else needed. Re-establishing the battery voltage should
>> reset the chip. All you have to do is boot the machine up.  It might not
>> boot up on the first try, so if you cannot access the hard drive on the
>> first try,  just keep rebooting until the computer does finally recognize
>> it.  If, however, you cannot get the hard drive to be recognized, after two
>> or three tries,  you may then have a bad hard drive, as these old Conner
>> hard drives are notorious for failing over time.  How did you repair the
>> RTC BTW?
>> Phil.
>>
>>
>>
>
>
>
> --
> Sent from my time machine
>



--
Sent from my time machine

Yahoo! Message number: 2832
Date: 21 Mar 2014 10:34:04 -0700
From:
Subject: Re: [RuGRiD-Laptop] Re: New member with a 1520
text/plain; charset=utf-8

Hi Beau,  If it is still saying configuration 02, then yes, the computer is saying the CMOS battery is still dead and the RTC chip is still not operating.  Did you be sure to disconnect at least one of the terminals of the old battery? If the old battery is still connected, it will short circuit any battery you try to put in on it. Otherwise, this would suggest that somehow the chip is still not seeing sufficient voltage.
 Phil. 

Yahoo! Message number: 2833
Date: Fri, 21 Mar 2014 14:12:32 -0400
From: Beau Walker
Subject: Re: [RuGRiD-Laptop] Re: New member with a 1520
text/plain; charset=ISO-8859-1

Got it.  I wired the cmos battery holder up backwards...  The hard drive is
functioning.  Looks like it's just a bare install of Dos 3.3, lotus123 and
WP51.


On Fri, Mar 21, 2014 at 1:34 PM, <Jeriddian@...> wrote:

>
>
> Hi Beau,
> If it is still saying configuration 02, then yes, the computer is saying
> the CMOS battery is still dead and the RTC chip is still not operating.
>  Did you be sure to disconnect at least one of the terminals of the old
> battery? If the old battery is still connected, it will short circuit any
> battery you try to put in on it. Otherwise, this would suggest that somehow
> the chip is still not seeing sufficient voltage.
> Phil.
>
> 
>



--
Sent from my time machine

Yahoo! Message number: 2834
Date: 21 Mar 2014 11:24:30 -0700
From:
Subject: Re: [RuGRiD-Laptop] Re: New member with a 1520
text/plain; charset=utf-8

Congratulations.  Yeah, that sounds like a typical installation on the hard drive for that era.  Have fun.
 Phil. 

Yahoo! Message number: 2835
Date: Fri, 21 Mar 2014 14:26:02 -0400
From: Beau Walker
Subject: Re: [RuGRiD-Laptop] Re: New member with a 1520
text/plain; charset=ISO-8859-1

Yeah I didn't find anything too exciting.  Is there a way to force this to
boot from the floppy drive?


On Fri, Mar 21, 2014 at 2:24 PM, <Jeriddian@msn.com> wrote:

>
>
> Congratulations.
> Yeah, that sounds like a typical installation on the hard drive for that
> era.  Have fun.
> Phil.
>
>
>



--
Sent from my time machine

Yahoo! Message number: 2836
Date: 21 Mar 2014 14:10:53 -0700
From:
Subject: Re: RuGRiD-Laptop
text/plain; charset=utf-8

Yep.
 Just press the "F" key during boot up. That tells the computer to look at the floppy before the hard drive.

Yahoo! Message number: 2837
Date: 21 Mar 2014 14:15:20 -0700
From:
Subject: Re: RuGRiD-Laptop
text/plain; charset=utf-8

Yep,
 Just press the "F" key during boot up. That tells the computer to read the floppy before the hard drive.

Yahoo! Message number: 2838
Date: 21 Mar 2014 17:07:23 -0700
From:
Subject: Re:
text/plain; charset=utf-8

the 4 images were from inside the gridcase3 , 1 for dos and 3 for the grid os,
  
 I have searched high and low for the rom carriers with no luck, I have had some success with just shoving them in down the contacts and they will go in the hole, but it is a real pain,  best bet would be to switch them out with a high quality socket like in my 1530 I plan to do this as I need to hook up a rom emulator on my compass
  
 Grant

Yahoo! Message number: 2839
Date: 21 Mar 2014 18:44:09 -0700
From:
Subject: Re:
text/plain; charset=utf-8

hi

Thanks for reply !
and thanks for the advice :
In my case :
The 3 Eproms on internal rom sockets containing Msdos BASERUN ASCOM. 4 place is empty.
How can i acces the BIOS of the GRIDCASE 3 ? I heard i need a setup programm, was this a good hint or not ? if yes is the soft avaiable some where ?

Again thank you very much for reply :)
Kind regards, athan

Yahoo! Message number: 2840
Date: 21 Mar 2014 20:39:53 -0700
From:
Subject: Re: RuGRiD-Laptop
text/plain; charset=utf-8

Hi, Athan,
 With a primitive OS like MSDOS 2.1, you only thing you can do is to use DEBUG to dump the BIOS code into a file. It's pretty easy to do, but I don't remember off the top of my head what the instructions are. However, that is about all you can do. I'm sure you know there is no BIOS program of any kind in this primitive a computer. If you want to specifically deal with the code of the BIOS, I hope you know your assembly language well. The BIOS is located on two BIOS chips on the motherboard. If you want to alter the BIOS, it is possible to burn new EPROM BIOS chips for this purpose and replace the originals in your computer. I have done that to a limited degree in my 1500 series units. But this is the only way I know to access the BIOS.
 Phil.
 

Yahoo! Message number: 2841
Date: Fri, 21 Mar 2014 20:48:03 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: RuGRiD-Laptop
text/plain; charset=utf-8

It took a little bit of searching, but here it is:

Here's the way to dump the BIOS:
---------------------------------------------------------------------------------------------------------------------
C:\> DEBUG

    -N MYF000.BIN          (resulting file will be named MYF000.BIN)

    -R BX                  (set BX=0000H/CX=8000H as count of bytes to write,  00008000H = 32K)
    BX 0000
    :0000
    -R CX
    CX 0000
    :8000

    -M F000:0 8000 0100    (copy 32K bytes from F000:0 to offset 0100 in local segment)

    -W 0100                (write from offset 0100 in local segment)
    Writing 8000 bytes

    -Q
 --------------------------------------------------------------------------------------------------------------------
That will give you the BIOS in a BIN file, which is exactly what I would use in a Hex editor.



________________________________
 From: "Jeriddian@..." <Jeriddian@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Friday, March 21, 2014 11:39 PM
Subject: [RuGRiD-Laptop] Re: RuGRiD-Laptop






Hi, Athan,
With a primitive OS like MSDOS 2.1, you only thing you can do is to use DEBUG to dump the BIOS code into a file. It's pretty easy to do, but I don't remember off the top of my head what the instructions are. However, that is about all you can do. I'm sure you know there is no BIOS program of any kind in this primitive a computer. If you want to specifically deal with the code of the BIOS, I hope you know your assembly language well. The BIOS is located on two BIOS chips on the motherboard. If you want to alter the BIOS, it is possible to burn new EPROM BIOS chips for this purpose and replace the originals in your computer. I have done that to a limited degree in my 1500 series units. But this is the only way I know to access the BIOS.
Phil.

Yahoo! Message number: 2842
Date: 21 Mar 2014 21:56:44 -0700
From:
Subject: Re: [RuGRiD-Laptop] Re: RuGRiD-Laptop
text/plain; charset=utf-8

hi

Thank you very much for the hint ... what do i say the whole work :)
I am used to mod the bios on modern computers for some specific cases but i use the special editing tools from phoenix ami awad ...
But this is not the goal here i'd hope to get out some informations of the gridcase 3 (n° serial/model) may some info of computer peripheral as i doo not want to disassemble this jewel if it's not need.
I'm just trying to get informations about the machine's original OS and if need burn new ROM's to restore and maintain the computer in the best possible way :) 

Thanks again, Kind Regards,
Athan

Yahoo! Message number: 2843
Date: 21 Mar 2014 22:44:12 -0700
From:
Subject: Re: [RuGRiD-Laptop] Re: RuGRiD-Laptop

Here is a program scancase to give some info on the gridcase3
  
 setup is from my 1530 but does have some function and some tests do work

This is part 2 of a multi-part message.

Yahoo! Message number: 2844
Date: 21 Mar 2014 22:53:26 -0700
From:
Subject: Re:
text/plain; charset=utf-8

The 4 roms in the file section are the originals from mine it is a dual boot system dos and gridos.

Yahoo! Message number: 2845
Date: 22 Mar 2014 11:46:52 -0700
From:
Subject: Re:
text/plain; charset=utf-8

hi again,

Thank you for the informations I will go on burn them and have a little look on gridos that i never seen working !

Kind regards

Yahoo! Message number: 2846
Date: 08 Apr 2014 23:33:21 -0700
From:
Subject: Re: New Member
text/plain; charset=utf-8

Thank you Kevin for all of that info. I'm still processing through it and haven't had time to work on my GRiD yet. I'm making progress on a lab setup in my apartment where I'll be well equipped to tinker with it. I've started studying asynchronous DRAM and am wondering how back then they could just combining the address and data I/O on the same pins to the controller. I found a physical example of a 4-slot 72-pin SIMM riser and looking at it all of the 4 slots have their pins commonly connected across. How does the controller address that in parallel and know there is more there? Soldering isn't a problem for me. I would like to try finding the async DRAM ICs (either new or from harvesting them from anywhere; sipps, simms, printers, embedded, whatever) and breadboarding or creating my own PCBs to expand the memory just for fun. Those other things you have talked about I will also look into on the unit I have. I could not find a mode.exe on the hard drive for controlling the backlight. The CCFL bulbs may need to be replaced since their aging may have caused the resistance to drop so low that the inverter can no longer supply enough current. They blink on for about a second each time the power supply is connected and flipped on. My screen is probably a CGA LCD but I could be mistaken, I was hoping it would have been gas plasma! Again, I haven't opened it yet, but I'm getting more time again for these kinds of things. It does have the expansion tray, and there's a 15-pin dsub in it which I believe is some network adapter that predates my knowledge (these parts are as old as I am). A few weeks ago I bought a 15-pin dsub to RJ45 box which hopefully will help me discover what that that card can do for me. If not, then I also have an Intel (drivers!) ISA ethernet card with RJ45 that I picked up a few weeks ago. Thanks. 

 Has anybody looked into the assembly source code from the floppies I posted up? What can they do? What can they do for somebody? That sort of thing would take me longer to understand than my proposed hardware repairs.

Yahoo! Message number: 2847
Date: 10 Apr 2014 09:56:47 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /HardDisk identifier from Jean/CORETEST.EXE
  Uploaded by : hallo.jean <hallo.jean@...>
  Description : HardDisk speed

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/HardDisk%20identifier%20from%20Jean/CORETEST.EXE

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

hallo.jean <hallo.jean@...>

Yahoo! Message number: 2848
Date: 10 Apr 2014 09:57:33 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /HardDisk identifier from Jean/IDEID.EXE
  Uploaded by : hallo.jean <hallo.jean@...>
  Description : Brand of HardDisk etc.

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/HardDisk%20identifier%20from%20Jean/IDEID.EXE

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

hallo.jean <hallo.jean@...>

Yahoo! Message number: 2849
Date: 10 Apr 2014 09:57:57 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.

  File        : /HardDisk identifier from Jean/ICE.EXE
  Uploaded by : hallo.jean <hallo.jean@...>
  Description : RS232 test

You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/HardDisk%20identifier%20from%20Jean/ICE.EXE

To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398

Regards,

hallo.jean <hallo.jean@...>

Yahoo! Message number: 2850
Date: Tue, 22 Apr 2014 17:27:51 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiBbUnVHUmlELUxhcHRvcF0gUkU6IFJFOiBSRTogR3JpZCAxNTIw?= =?utf-8?B?IHBhc3N3b3Jk?=
text/plain; charset=utf-8

Hi!I put the battery with CMOS. But I faced a new problem. My CMOS has a password. How to reset CMOS? What contacts produce circuiting for cleaning CMOS?
понедельник, 18 ноября 2013 10:30 "lescovez@..." <lescovez@...> писал(а):

 
All clear! Thank you! 


---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:


I am assuming that your 1520 has the Dallas RTC chip. Is that correct? The "invalidation configuration information; code 02" is the Phoenix BIOS code telling you the CMOS battery is dead and needs to be replaced. When the CMOS battery dies, the RTC response to that varies. In most 1520's you cannot access the hard drive. In some you still can, after pressing F1. It may be that in your particular unit, it may not recognize the RTC chip anymore, thus triggering the password response by the computer on reboot. In any case, what you must do is replace the CMOS battery by one of the methods I already outlined to you. Once you restore CMOS battery power to the RTC chip, I believe the  password question will go away. But in any case, you have to restore CMOS battery power to the RTC before you can proceed any further.
 
Phil



---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:
>
>
>Why then the BIOS asks for a password if a battery low?
>And says at the beginning: "invalid configuration information; code 02"
>and then when you reboot: "Enter password, then press RETURN"
>I need to check the possibility of replacing the chip dallas before ?
>
>
>
>
>---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:
>>
>>
>>No, lescovez,
>> 
>>The password is activated ONLY when you put in a different Dallas 1287A other than the one which was originally installed in the computer. Since the GRiD was used as a military computer here in the US (and still is in England), I believe this was a security protocol which may have been adopted, but the password is activated ONLY when your replace the actual RTC chip itself, not the battery. If you drill into the chip and reroute the pins by soldering them to a new battery, but still using the same chip, it shouldn't ask for the password. It never has when I performed the second option procedure, which I've done two or three times myself just to see if it worked.
>> 
>>Phil
>>
>>
>>
>>---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:
>>>
>>>
>>>Hi!
>>>The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
>>>
>>>
>>>
>>>---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:
>>>>
>>>>
>>>>Hi, Lescovez,
>>>> 
>>>>The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
>>>> 
>>>>You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
>>>> 
>>>>www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
>>>> 
>>>>Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
>>>> 
>>>>Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem
 and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
>>>> 
>>>>Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
>>>> 
>>>>http://www.mcamafia.de/mcapage0/dsrework.htm
>>>> 
>>>>Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times
 before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
>>>> 
>>>>Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
>>>> 
>>>>I hope this will help. Good luck.
>>>> 
>>>>Phil
>>>>---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:
>>>>
>>>>
>>>>Hello! I have a grid in 1520.
>>>>There is a problem.
>>>>Photos attached.
>>>>1. You need to replace the battery CMOS.
>>>>2. The password is set.
>>>>First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
>>>>Thank you!

Yahoo! Message number: 2851
Date: Tue, 22 Apr 2014 18:38:03 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiBbUnVHUmlELUxhcHRvcF0gUkU6IFJFOiBSRTogR3JpZCAxNTIw?= =?utf-8?B?IHBhc3N3b3Jk?=
text/plain; charset=utf-8

I have MC146818P Real-Time Clock. Not Dallas.
вторник, 22 апреля 2014 22:27 Юрий Лесковец <lescovez@...> писал(а):

 
Hi!I put the battery with CMOS. But I faced a new problem. My CMOS has a password. How to reset CMOS? What contacts produce circuiting for cleaning CMOS?
понедельник, 18 ноября 2013 10:30 "lescovez@..." <lescovez@...> писал(а):

 
All clear! Thank you! 


---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:


I am assuming that your 1520 has the Dallas RTC chip. Is that correct? The "invalidation configuration information; code 02" is the Phoenix BIOS code telling you the CMOS battery is dead and needs to be replaced. When the CMOS battery dies, the RTC response to that varies. In most 1520's you cannot access the hard drive. In some you still can, after pressing F1. It may be that in your particular unit, it may not recognize the RTC chip anymore, thus triggering the password response by the computer on reboot. In any case, what you must do is replace the CMOS battery by one of the methods I already outlined to you. Once you restore CMOS battery power to the RTC chip, I believe the  password question will go away. But in any case, you have to restore CMOS battery power to the RTC before you can proceed any further.
 
Phil



---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:
>
>
>Why then the BIOS asks for a password if a battery low?
>And says at
 the beginning: "invalid configuration information; code 02"
>and then when you reboot: "Enter password, then press RETURN"
>I need to check the possibility of replacing the chip dallas before ?
>
>
>
>
>---In rugrid-laptop@yahoogroups.com, <Jeriddian@...> wrote:
>>
>>
>>No, lescovez,
>> 
>>The password is activated ONLY when you put in a different Dallas 1287A other than the one which was originally installed in the computer. Since the GRiD was used as a military computer here in the US (and still is in England), I believe this was a security protocol which may have been adopted, but the password is activated ONLY when your replace the actual RTC chip itself, not the battery. If you drill into the chip and reroute the pins by soldering them to a new battery, but still using the same chip, it shouldn't ask for the password. It never has when I performed the second option procedure, which I've done two or three times myself just to see if it worked.
>> 
>>Phil
>>
>>
>>
>>---In RuGRiD-Laptop@yahoogroups.com, <lescovez@...> wrote:
>>>
>>>
>>>Hi!
>>>The password is required due to dead battery? If you solder the battery to the terminals at Dallas that will not ask for your password? 
>>>
>>>
>>>
>>>---In RuGRiD-Laptop@yahoogroups.com, <Jeriddian@...> wrote:
>>>>
>>>>
>>>>Hi, Lescovez,
>>>> 
>>>>The problem is clearly that your CMOS battery is dead and has to be replaced. This is only to be expected as these computers are 30 years old, and CMOS batteries typically only have life spans of 7-10 years.The answer to your problem can be complicated. What Dave has proposed may work, but it may only work on those 1520 models which do not have a Dallas 1287A RTC chip which contains the CMOS battery. If your 1520 operates off of the Mororola MC146818 RTC and a Tadiran CMOS battery, then Dave's solution would work by replacing the Tadiran Battery just north of the system memory on the motherboard, which you can easily access and replace by partial disassembly of the computer. However, if you disassemble the computer to get to the battery, and you find there is no Tadiran battery, this tells you the computer is using a Dallas 1287A RTC chip as a combined RTC/CMOS battery block. The problem becomes a lot harder then.
>>>> 
>>>>You have only two options then. Both require some detailed work, and both options necessitate removing the original Dallas 1287A RTC chip. The first option is to simply replace it. This requires a fair amount of skill and equipment. You can read how to do it in the following file which I created as I have now performed this procedure several times on my computers. You can download this file from here:
>>>> 
>>>>www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf
>>>> 
>>>>Be sure and put the entire line above in the URL address box including the PDF extension when you download the file. This file shows detailed steps on how to completely disassemble the GRiD 1520-1530 series for the purpose of replacing the Dallas 1287A RTC chip. You must be careful not to break any of the pins when you remove the chip if you wish to do the second option.. Otherwise you will have to do the first option as your only solution.
>>>> 
>>>>Option 1: As shown in the downloadable file, you simply replace the RTC chip and reassemble the computer, however you will then likely run into another problem. Each Dallas 1287A chip apparently has a unique identifier code. If you replace it with another chip, the computer BIOS has code asking you for a password to try and access the computer. The problem is that the 1520 BIOS code is faulty and does not provide you with any mechanism by which to provide a correct password the computer will recognize. It will ask for a password, but there is no code in the BIOS to accept one. So whatever password you try to enter, the computer will reject it and try to reboot, thus locking you into this endless cycle of booting, enter password, password failure, and rebooting over and over again. As I said, this was a fault in the original 1520 BIOS code. I managed to get a coder to solve this problem and I have a modified 1520 BIOS which will bypass this problem
 and allow the computer to boot up. But it requires burning a couple of EPROM chips to substitute for the BIOS chips in your computer. Again this would require certain equipment and supplies.
>>>> 
>>>>Option 2: This requires you to save the old Dallas 1287A RTC chip intact, as I noted. There are files in the files section which can show you how to use a Dremel tool to grind away at the plastic on top of the RTC chip to bare the battery itself. The following file will show you roughly how to do this:
>>>> 
>>>>http://www.mcamafia.de/mcapage0/dsrework.htm
>>>> 
>>>>Note that the battery terminals are on pins 16 (-) and 20(+). At least one of these must be detached from the old battery or it will short out your new battery. Please also realize that you cannot just stick a battery on top of the RTC chip as shown in this file. There is no room for it in the 1520. What you must do is solder a couple of wires to the exposed pins and run the wires to a CMOS battery holder (the CR 2032 is a common replacement as is the Tadiran battery) and place the battery somewhere in the computer where it will fit. Once this is done you can replace the RTC chip back in the motherboard and solder it back in, then reassemble the computer. When you boot it up, the computer will recognize the RTC chip is the same one as before and will not ask for a password before booting up. With a new and functional CMOS battery in place, the computer will then become fully functional, although you may have to cold boot it up a couple of times
 before the RTC chip is fully programmed with all the necessary parameters for the computer to operate.
>>>> 
>>>>Of note, the 1530 does not require this as the 1530 BIOS does not require a password if the Dallas 1287A chip is replaced. Also note that the 1287A is an outmoded chip which is no longer made. The replacement, which Dallas Semiconductor makes is the 12887A, which will NOT work in any Grid computer. The chip in the GRiD must be replaced with another 1287A RTC chip and no other. These can still be found for sale on the web.
>>>> 
>>>>I hope this will help. Good luck.
>>>> 
>>>>Phil
>>>>---In rugrid-laptop@yahoogroups.com, <lescovez@...> wrote:
>>>>
>>>>
>>>>Hello! I have a grid in 1520.
>>>>There is a problem.
>>>>Photos attached.
>>>>1. You need to replace the battery CMOS.
>>>>2. The password is set.
>>>>First know how to solve the problem, but the second I do not know how.Can you tell how to remove the password?
>>>>Thank you!

Yahoo! Message number: 2852
Date: 22 Apr 2014 13:20:25 -0700
From:
Subject: =?UTF-8?Q?Re=3A_=D0=9E=D1=82=D0=B2=3A_=5BRuGRiD-Laptop=5D_RE=3A?= =?UTF-8?Q?_RE=3A_RE=3A_Grid_1520__password?=
text/plain; charset=utf-8

Wow!. I have not run into that before. Could you please write out exactly what the readout on the screen is, please?

Yahoo! Message number: 2853
Date: Tue, 22 Apr 2014 21:49:26 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiDQntGC0LI6IFtSdUdSaUQtTGFwdG9wXSBSRTogUkU6IFJFOiBH?= =?utf-8?B?cmlkIDE1MjAgIHBhc3N3b3Jk?=

Motorola MC146818AP or compatible. 
Rectangular 24-pin DIP chip, found on older machines. Compatibles are made by several manufacturers including Hitachi (HD146818AP) and Samsung (KS82C6818A), but the number on the chip should have 6818 in it somewhere. Although pin-compatible with the 1287/1287A, there is no built-in battery, you can also short pins 12 and 24.

No results.

It remains only to remove it and plug back.

среда, 23 апреля 2014 2:20 "Jeriddian@msn.com" <Jeriddian@...> писал(а):

  
Wow!. I have not run into that before. Could you please write out exactly what the readout on the screen is, please?

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

This is part 4 of a multi-part message.

Yahoo! Message number: 2854
Date: Tue, 22 Apr 2014 21:54:14 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiDQntGC0LI6IFtSdUdSaUQtTGFwdG9wXSBSRTogUkU6IFJFOiBH?= =?utf-8?B?cmlkIDE1MjAgIHBhc3N3b3JkIFszIEF0dGFjaG1lbnRzXQ==?=
text/plain; charset=utf-8

Perhaps there should be engineering passwords

среда, 23 апреля 2014 2:49 Юрий Лесковец <lescovez@...> писал(а):

 
[Attachment(s) from =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?= included below]
Motorola MC146818AP or compatible. 
Rectangular 24-pin DIP chip, found on older machines. Compatibles are made by several manufacturers including Hitachi (HD146818AP) and Samsung (KS82C6818A), but the number on the chip should have 6818 in it somewhere. Although pin-compatible with the 1287/1287A, there is no built-in battery, you can also short pins 12 and 24.

No results.

It remains only to remove it and plug back.

среда, 23 апреля 2014 2:20 "Jeriddian@..." <Jeriddian@...> писал(а):

 
Wow!. I have not run into that before. Could you please write out exactly what the readout on the screen is, please?

Yahoo! Message number: 2855
Date: Tue, 22 Apr 2014 22:06:55 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiDQntGC0LI6IFtSdUdSaUQtTGFwdG9wXSBSRTogUkU6IFJFOiBH?= =?utf-8?B?cmlkIDE1MjAgIHBhc3N3b3Jk?=
text/plain; charset=utf-8

With the closure short pins 12 and 24, only run Dos from floppy. With floppy I do not know how to find the password, or generate.

среда, 23 апреля 2014 2:54 Юрий Лесковец <lescovez@...> писал(а):

 
Perhaps there should be engineering passwords

среда, 23 апреля 2014 2:49 Юрий Лесковец <lescovez@...> писал(а):

 
[Attachment(s) from =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?= included below]
Motorola MC146818AP or compatible. 
Rectangular 24-pin DIP chip, found on older machines. Compatibles are made by several manufacturers including Hitachi (HD146818AP) and Samsung (KS82C6818A), but the number on the chip should have 6818 in it somewhere. Although pin-compatible with the 1287/1287A, there is no built-in battery, you can also short pins 12 and 24.

No results.

It remains only to remove it and plug back.

среда, 23 апреля 2014 2:20 "Jeriddian@..." <Jeriddian@...> писал(а):

 
Wow!. I have not run into that before. Could you please write out exactly what the readout on the screen is, please?

Yahoo! Message number: 2856
Date: Tue, 22 Apr 2014 20:49:32 -0700 (PDT)
From: Shawnerz
Subject: =?utf-8?B?UmU6INCe0YLQsjog0J7RgtCyOiBbUnVHUmlELUxhcHRvcF0gUkU6IFJFOiBS?= =?utf-8?B?RTogR3JpZCAxNTIwICBwYXNzd29yZA==?=
text/plain; charset=utf-8

I would not short pins 12 and 24.  Pin 12 is ground (-) and Pin 24 is VDD (+5).  If powered up, you would be shorting the entire +5 supply to ground.
In reading the datasheet, you might try holding pin 22 low during power up.  That might clear the register.  I am not 100% sure if that will work.
Good luck,
-Shawn




________________________________
 From: Юрий Лесковец <lescovez@...>
To: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Sent: Tuesday, April 22, 2014 5:06 PM
Subject: Отв: Отв: [RuGRiD-Laptop] RE: RE: RE: Grid 1520  password






With the closure short pins 12 and 24, only run Dos from floppy. With floppy I do not know how to find the password, or generate.

среда, 23 апреля 2014 2:54 Юрий Лесковец <lescovez@...> писал(а):

 
Perhaps there should be engineering passwords

среда, 23 апреля 2014 2:49 Юрий Лесковец <lescovez@yahoo.com> писал(а):

 
[Attachment(s) from =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?= included below]
Motorola MC146818AP or compatible. 
Rectangular 24-pin DIP chip, found on older machines. Compatibles are made by several manufacturers including Hitachi (HD146818AP) and Samsung (KS82C6818A), but the number on the chip should have 6818 in it somewhere. Although pin-compatible with the 1287/1287A, there is no built-in battery, you can also short pins 12 and 24.

No results.

It remains only to remove it and plug back.

среда, 23 апреля 2014 2:20 "Jeriddian@..." <Jeriddian@...> писал(а):

 
Wow!. I have not run into that before. Could you please write out exactly what the readout on the screen is, please?

Yahoo! Message number: 2857
Date: Sat, 26 Apr 2014 21:39:18 +0100 (BST)
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiDQntGC0LI6INCe0YLQsjogW1J1R1JpRC1MYXB0b3BdIFJFOiBS?= =?utf-8?B?RTogUkU6IEdyaWQgMTUyMCAgcGFzc3dvcmQ=?=

I tried many ways. Happened only in this combination. I shorting pin 12  with the pins 13-24 when the laptop is turned off.
Then I shorting pin 12 and 24 when the computer was turned on. 
After that the system was restarted several times and the hard drive spinning and stopping, then I turned off the laptop and turned back on and the password has disappeared.

среда, 23 апреля 2014 9:49 Shawnerz <shawnerz@...> писал(а):

 
I would not short pins 12 and 24.  Pin 12 is ground (-) and Pin 24 is VDD (+5).  If powered up, you would be shorting the entire +5 supply to ground.
In reading the datasheet, you might try holding pin 22 low during power up.  That might clear the register.  I am not 100% sure if that will work.
Good luck,
-Shawn




________________________________
 From: Юрий Лесковец <lescovez@...>
To: "RuGRiD-Laptop@yahoogroups.com" <RuGRiD-Laptop@yahoogroups.com>
Sent: Tuesday, April 22, 2014 5:06 PM
Subject: Отв: Отв: [RuGRiD-Laptop] RE: RE: RE: Grid 1520  password






With the closure short pins 12 and 24, only run Dos from floppy. With floppy I do not know how to find the password, or generate.

среда, 23 апреля 2014 2:54 Юрий Лесковец <lescovez@...> писал(а):

 
Perhaps there should be engineering passwords

среда, 23 апреля 2014 2:49 Юрий Лесковец <lescovez@...> писал(а):

 
[Attachment(s) from =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?= included below]
Motorola MC146818AP or compatible. 
Rectangular 24-pin DIP chip, found on older machines. Compatibles are made by several manufacturers including Hitachi (HD146818AP) and Samsung (KS82C6818A), but the number on the chip should have 6818 in it somewhere. Although pin-compatible with the 1287/1287A, there is no built-in battery, you can also short pins 12 and 24.

No results.

It remains only to remove it and plug back.

среда, 23 апреля 2014 2:20 "Jeriddian@..." <Jeriddian@...> писал(а):

 
Wow!. I have not run into that before. Could you please write out exactly what the readout on the screen is, please?

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

Yahoo! Message number: 2858
Date: 28 Apr 2014 10:43:08 -0700
From:
Subject: grid 2260
text/plain; charset=utf-8

Hi
 

 I have a Grid 2260 tablet notebook and need to acces bios.
 Does any one know the key combination for to do so ?
 

 Kind regards

Yahoo! Message number: 2859
Date: Tue, 29 Apr 2014 19:46:49 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] grid 2260
text/plain; charset=utf-8

I am sorry.  I do not.
-Shawn


________________________________
 From: "athan.dejong@..." <athan.dejong@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Monday, April 28, 2014 1:43 PM
Subject: [RuGRiD-Laptop] grid 2260







Hi

I have a Grid 2260 tablet notebook and need to acces bios.
Does any one know the key combination for to do so ?

Kind regards
 

Yahoo! Message number: 2860
Date: 30 Apr 2014 10:21:47 -0700
From:
Subject: Re: grid 2260
text/plain; charset=utf-8

hi shawn

Thanks for reply !

Hope someone else knows out there.

Regards

Yahoo! Message number: 2861
Date: Wed, 30 Apr 2014 21:59:13 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=utf-8

Athan,
Most of use on the group have the Grid 1520, 1530, 1535 or 1550SX.  For these models, you need an external program called conf1520.exe (or conf15XX.exe where XX is the model of the grid) to access the programmable BIOS.

I am not an expect on the 2260.  But I think you need the external floppy disk drive for the 2260 and the configuration program.
Did you get any floppy disks when you got your 2260?
-SHawn




________________________________
 From: "athan.dejong@..." <athan.dejong@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Wednesday, April 30, 2014 1:21 PM
Subject: [RuGRiD-Laptop] Re: grid 2260





hi shawn

Thanks for reply !

Hope someone else knows out there.

Regards

Yahoo! Message number: 2862
Date: Wed, 30 Apr 2014 22:14:56 -0700
From: Josh Dersch
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=UTF-8; format=flowed

The 2260 and 2270 should have the configuration built into the BIOS (at 
least I know the 2270 does); it's been awhile since I played with mine 
but try Ctrl-Alt-Esc or Ctrl-Alt-S.  (Or try causing a POST error by 
holding down a key while powering it up, it'll probably ask you to 
"Press F2 to enter Setup."

- Josh

On 4/30/2014 9:59 PM, Shawnerz wrote:
> Athan,
> Most of use on the group have the Grid 1520, 1530, 1535 or 1550SX.  
> For these models, you need an external program called conf1520.exe (or 
> conf15XX.exe where XX is the model of the grid) to access the 
> programmable BIOS.
>
> I am not an expect on the 2260.  But I think you need the external 
> floppy disk drive for the 2260 and the configuration program.
> Did you get any floppy disks when you got your 2260?
> -SHawn
>
>
> ------------------------------------------------------------------------
> *From:* "athan.dejong@..." <athan.dejong@...>
> *To:* RuGRiD-Laptop@yahoogroups.com
> *Sent:* Wednesday, April 30, 2014 1:21 PM
> *Subject:* [RuGRiD-Laptop] Re: grid 2260
>
>
>
> hi shawn
>
> Thanks for reply !
>
> Hope someone else knows out there.
>
> Regards
>
>
>
>
> 

Yahoo! Message number: 2863
Date: 01 May 2014 22:46:47 -0700
From:
Subject: Re: grid 2260
text/plain; charset=utf-8

hi shawn

yes i own the external floppy disk drive i found bios updates on the net. (to start from floppy hold E for external boot)
may this link interrests some one :

http://www.sandyflat.net/digerati/ast486/drivers/grid/ http://www.sandyflat.net/digerati/ast486/drivers/grid/

there is a prog called :

 cal2260.zip http://www.sandyflat.net/digerati/ast486/drivers/grid/cal2260.zip Calibration Program for the 2260 33380
But what does it calibrate ? screen ? battery ?

I 'tried different key combinations but no luck :(

Kind regards




  
 
 

Yahoo! Message number: 2864
Date: Fri, 2 May 2014 06:48:14 +0100 (BST)
From: Athan DE JONG
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=utf-8

hi

thanks for reply

i tested all these with no luck.
I will retry this week end but i m quite sure i have tested all you suggest.

Thanks again, kind regards


 
De jong athan :
MCTS(Microsoft certified technology specialist).
Le Jeudi 1 mai 2014 7h15, Josh Dersch <derschjo@...> a écrit :

 
The 2260 and 2270 should have the configuration built into the BIOS (at least I know the 2270 does); it's been awhile since I played with mine but try Ctrl-Alt-Esc or Ctrl-Alt-S.  (Or try causing a POST error by holding down a key while powering it up, it'll probably ask you to "Press F2 to enter Setup."

- Josh

On 4/30/2014 9:59 PM, Shawnerz wrote:

 
>Athan,
>Most of use on the group have the Grid 1520, 1530, 1535 or
              1550SX.  For these models, you need an external program
              called conf1520.exe (or conf15XX.exe where XX is the model
              of the grid) to access the programmable BIOS.
>
>I am not an expect on the 2260.  But I think you need the
              external floppy disk drive for the 2260 and the
              configuration program.
>Did you get any floppy disks when you got your 2260?
>-SHawn
>
>
>
>
>
>
>________________________________
> From: "athan.dejong@..." <athan.dejong@...>
>To: RuGRiD-Laptop@yahoogroups.com
>Sent: Wednesday, April 30, 2014 1:21 PM
>Subject: [RuGRiD-Laptop] Re: grid 2260
>
>
>
>
>
>hi shawn
>
>Thanks for reply !
>
>Hope someone else knows out there.
>
>Regards
>
>
>
>
>

Yahoo! Message number: 2865
Date: 04 May 2014 12:11:36 -0700
From:
Subject: Compass 1139 upgrade
text/plain; charset=utf-8

FYI
 I did some mods on my 1139 buy changing out the rom sockets and adding 512k ram, one of the bios chips has the window broken off , so I removed them and dumped them , I should have put in new ones but did not,
 Luckily it fired right back up.
  
 posted some pictures and the bios files in file section

Yahoo! Message number: 2866
Date: 04 May 2014 12:14:02 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /1139compassroms.zip
  Uploaded by : klyball <klyball@...>
  Description : 1139 Compass Bios


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/1139compassroms.zip


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


klyball <klyball@...>

Yahoo! Message number: 2867
Date: 06 May 2014 05:42:14 -0700
From:
Subject: GridCase Tempest
text/plain; charset=utf-8

I have acquired a Gridcase Tempest which I think is model number 1307. Can anyone help with the following:
 

 1. How can I get into the BIOS which is Pheonix 2.03;
 2. Is it possible to install ROM chips? Under the cover there is just one which is MS DOS 3.2 and this is soldered in. I thought you could install ROMs which come in plastic 'packages'?
 3. Does anyone have a pdf of the usermanual?
 4. Does anyone have the config exe to make changes?
 

 Thanks for your help.

Yahoo! Message number: 2868
Date: Tue, 6 May 2014 18:24:45 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] GridCase Tempest
text/plain; charset=utf-8

Dave,
I am not familiar with that model.
On the early Grid's, you could not get in to the BIOS like today's computers.  You had to run a separate configuration utility.  I have the configuration for the 1520 and 1550, but not for the early models like the 1307.  I'm sorry about that.

Perhaps other members of the group have the information you're looking for.
Thanks,
-Shawn




________________________________
 From: "walton.david@sky.com" <walton.david@...>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Tuesday, May 6, 2014 8:42 AM
Subject: [RuGRiD-Laptop] GridCase Tempest



  



I have acquired a Gridcase Tempest which I think is model number 1307. Can anyone help with the following:

1. How can I get into the BIOS which is Pheonix 2.03;
2. Is it possible to install ROM chips? Under the cover there is just one which is MS DOS 3.2 and this is soldered in. I thought you could install ROMs which come in plastic 'packages'?
3. Does anyone have a pdf of the usermanual?
4. Does anyone have the config exe to make changes?

Thanks for your help.

Yahoo! Message number: 2869
Date: Wed, 7 May 2014 21:27:33 +0100 (BST)
From: Alessandro Aria
Subject: Gridcase 1590
text/plain; charset=utf-8

Hi, GRIDCASE 1590 for sale.



http://annunci.ebay.it/annunci/computer-e-software/bari-annunci-bari/gridcase-1590/42478200

http://www.youtube.com/watch?v=_Kv7AFXvvho&feature=g-upl


http://www.flickr.com/photos/prestazionidansia/sets/72157629181006050/with/6820348816/


www.griduk.com

Yahoo! Message number: 2870
Date: 09 May 2014 08:48:32 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /gridcase 12xx spec sheet.pdf
  Uploaded by : hercule0164 <walton.david@...>
  Description : Advert and specification sheet of the GridCase 12xx laptop series


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/gridcase%2012xx%20spec%20sheet.pdf


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


hercule0164 <walton.david@...>

Yahoo! Message number: 2871
Date: 11 May 2014 15:30:04 -0700
From: athan.dejong@...
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=utf-8

hi

The 2260 and 2270 should have the configuration built into the BIOS (at least I know the 2270 does); it's been awhile since I played with mine but try Ctrl-Alt-Esc or Ctrl-Alt-S.  (Or try causing a POST error by holding down a key while powering it up, it'll probably ask you to "Press F2 to enter Setup."
 
 - Josh

I tried all these but no luck :(

Josh can you have a look at your grid 2270 to confirm the key combination please ?

That would be soo kind of you :)

Kind regards

Yahoo! Message number: 2872
Date: 12 May 2014 16:55:36 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /GRID 2260/SETUPNU.COM
  Uploaded by : athan.dejong <athan.dejong@...>
  Description : BIOS configuration file not sure if it is the original but it works tested under dos 3.2


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRID%202260/SETUPNU.COM


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


athan.dejong <athan.dejong@...>

Yahoo! Message number: 2873
Date: 12 May 2014 16:59:23 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /GRID 2260/cal2260.zip
  Uploaded by : athan.dejong <athan.dejong@...>
  Description : screen calibration


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRID%202260/cal2260.zip


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


athan.dejong <athan.dejong@...>

Yahoo! Message number: 2874
Date: 12 May 2014 17:05:41 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /GRID 2260/2260bios.exe
  Uploaded by : athan.dejong <athan.dejong@...>
  Description : flash for the phoenix bios. extract this file to see the read me.


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRID%202260/2260bios.exe


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


athan.dejong <athan.dejong@...>

Yahoo! Message number: 2875
Date: 12 May 2014 17:07:16 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /GRID 2260/Microsoft Windows For Pen Computing 1.0.7z
  Uploaded by : athan.dejong <athan.dejong@...>
  Description : This should be the original version for the 2260 not yet tested


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRID%202260/Microsoft%20Windows%20For%20Pen%20Computing%201.0.7z


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


athan.dejong <athan.dejong@...>

Yahoo! Message number: 2876
Date: 12 May 2014 17:09:08 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /GRID 2260/update.zip
  Uploaded by : athan.dejong <athan.dejong@...>
  Description : The attached files are the updated drivers for the Windows for
Pen implementation on the GRiD 2260 Convertible.


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRID%202260/update.zip


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


athan.dejong <athan.dejong@...>

Yahoo! Message number: 2877
Date: 12 May 2014 17:13:44 -0700
From: athan.dejong@...
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=utf-8

hi

Finally I got luky on Vintage computer forum.

GRID 2260 Bios acces http://www.vintage-computer.com/vcforum/showthread.php?42696-GRID-2260-Bios-acces 
 
 http://www.vintage-computer.com/vcforum/showthread.php?42696-GRID-2260-Bios-acces 
 
 GRID 2260 Bios acces http://www.vintage-computer.com/vcforum/showthread.php?42696-GRID-2260-Bios-acces This is a discussion forum about vintage computer collecting, use, restoration and display powered by vBulletin. To find out about vBulletin, go to http://www.vbull...
 
 
 
 View on www.vintage-comput... http://www.vintage-computer.com/vcforum/showthread.php?42696-GRID-2260-Bios-acces 
 Preview by Yahoo 
 
 
  

Still need infos about the hard drive for bios setup specification.
If someone have any info ?

Kind regards

Yahoo! Message number: 2878
Date: Tue, 13 May 2014 19:08:35 -0700 (PDT)
From: Shawnerz
Subject: Grid 2260 Files
text/plain; charset=iso-8859-1

I wanted to say a big THANK YOU to Athan for uploading the 2260 files!� Wow, I'm sure other 2260 will find those files very useful.
Thanks for taking the time to join VCF and use their knowledge to help.� Perhaps I should have suggested VCF earlier.
But thank you again for the uploads!
-Shawn

Yahoo! Message number: 2879
Date: Tue, 13 May 2014 19:13:09 -0700 (PDT)
From: Shawnerz
Subject: New Grid 1520
text/plain; charset=iso-8859-1

I just wanted to say that I recently acquired a Grid 1520 from another member here.� It is in great condition.� Amber display.� 2 MB of RAM.� MS-DOS 6.22.� Internal hard drive still works as does the power supply.� It looks and performs great. Thanks, Deb.� :-)
-Shawn

Yahoo! Message number: 2880
Date: 13 May 2014 20:10:08 -0700
From: athan.dejong@...
Subject: Re: Grid 2260 Files
text/plain; charset=utf-8

hi

I am delighted to share my passion with you all :)

kind regards

Yahoo! Message number: 2881
Date: 13 May 2014 20:15:51 -0700
From: athan.dejong@...
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=utf-8

hi

to go further I need to replace the bios battery: 
7.2v 30mAh Varta 

photo :
Yahoo Groups https://groups.yahoo.com/neo/groups/RuGRiD-Laptop/photos/albums/1314628169/lightbox/736909277 
 
 Yahoo Groups https://groups.yahoo.com/neo/groups/RuGRiD-Laptop/photos/albums/1314628169/lightbox/736909277 Yahoo! Groups offers free mailing lists, photo & file sharing, group calendars and more. Discuss hot topics, share interests, join online communities.
 
 
 
 View on groups.yahoo.com https://groups.yahoo.com/neo/groups/RuGRiD-Laptop/photos/albums/1314628169/lightbox/736909277 
 Preview by Yahoo 
 
 



If anyone knows a compatible or a link where to buy the orginal varta?

I was able to find the following :
Notebook CMOS Batterie battery Fujitsu LifeBook P/N 60906 (6/V 40H) 7,2V 40MAh http://www.befr.ebay.be/itm/Notebook-CMOS-Batterie-battery-Fujitsu-LifeBook-P-N-60906-6-V-40H-7-2V-40MAh-/181122434428?pt=DE_Computer_Sonstige&hash=item2a2bbd057c&_uhb=1 
 
 http://www.befr.ebay.be/itm/Notebook-CMOS-Batterie-battery-Fujitsu-LifeBook-P-N-60906-6-V-40H-7-2V-40MAh-/181122434428?pt=DE_Computer_Sonstige&hash=item2a2bbd057c&_uhb=1 
 
 Notebook CMOS Batterie battery Fujitsu LifeBook P/... http://www.befr.ebay.be/itm/Notebook-CMOS-Batterie-battery-Fujitsu-LifeBook-P-N-60906-6-V-40H-7-2V-40MAh-/181122434428?pt=DE_Computer_Sonstige&hash=item2a2bbd057c&_uhb=1 
 
 
 View on www.befr.ebay.be http://www.befr.ebay.be/itm/Notebook-CMOS-Batterie-battery-Fujitsu-LifeBook-P-N-60906-6-V-40H-7-2V-40MAh-/181122434428?pt=DE_Computer_Sonstige&hash=item2a2bbd057c&_uhb=1 
 Preview by Yahoo 
 
 

Any suggestion will be apreciated

Kind regards, athan

Yahoo! Message number: 2882
Date: 22 May 2014 23:51:24 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /GRID-MSDOS-2.zip
  Uploaded by : jadersch <derschjo@...>
  Description : MS-DOS Version 2.00 for the Grid Compass 1101 series.  5.25" floppy disk image in IMD format (http://www.classiccmp.org/dunfield/img/index.htm)


You can access this file at the URL:
https://groups.yahoo.com/group/RuGRiD-Laptop/files/GRID-MSDOS-2.zip


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


jadersch <derschjo@...>

Yahoo! Message number: 2883
Date: 07 Jun 2014 15:39:44 -0700
From: lescovez@...
Subject: GRiD Compass Computer 1100 (The First)

Hello! 
My motherboard is damaged by battery acid. I want to restore it. Someone has a photo of the working motherboard 1100 or 1101? Or maybe there is circuit (scheme) of the motherboard?

 Thanks!

This is part 2 of a multi-part message.

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This is part 7 of a multi-part message.

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This is part 10 of a multi-part message.

Yahoo! Message number: 2884
Date: 07 Jun 2014 15:54:11 -0700
From: athan.dejong@...
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=utf-8

hi everybody !
 
 I have replaced the two batterys on the main board :
 the varta 7.2 v 6/v 30R does no longer bee supplyed by varta the only solution i found was to put 2 x 3/V40H in serie together witch is the most similar to the old one.
 
 the 3.6V LS3 Lithuim battery was avaiable on internet : ref 3.6V LS14250CNA.
 
 So for now the computer keep bios configuration !
 
 kind regards

Yahoo! Message number: 2885
Date: 07 Jun 2014 16:11:16 -0700
From: lescovez@...
Subject: Re: GRiD Compass Computer 1100 (The First)

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

Yahoo! Message number: 2886
Date: Sat, 7 Jun 2014 20:59:10 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First) [2 Attachments]
text/plain; charset=utf-8

Wow.  From the pictures you've shown, I do not think it can be repaired.  I think you can clean the computer and remove the battery acid with isopropyl alcohol.  I think that this is the "beginning of the end" for this Grid.  If the traces on the motherboard are still intact, I think the corrision will continue.  The circuit traces will eventually fail.  I do not think your Grid will not last much longer.
But isopropyl alcohol will do a good job in cleaning it up.
Good luck,
-Shawn





________________________________
 From: "lescovez@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Saturday, June 7, 2014 7:11 PM
Subject: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First) [2 Attachments]



[Attachment(s) from lescovez@yahoo.com [RuGRiD-Laptop] included below]

Yahoo! Message number: 2887
Date: Sat, 7 Jun 2014 21:00:13 -0700 (PDT)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: grid 2260
text/plain; charset=utf-8

Very good!  Great job!



________________________________
 From: "athan.dejong@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com>
To: RuGRiD-Laptop@yahoogroups.com
Sent: Saturday, June 7, 2014 6:54 PM
Subject: Re: [RuGRiD-Laptop] Re: grid 2260





hi everybody !

I have replaced the two batterys on the main board :
the varta  7.2 v 6/v 30R does no longer bee supplyed by varta the only
solution i found was to put 2 x 3/V40H in serie together witch is the
most similar to the old one.

the 3.6V LS3 Lithuim battery was avaiable on internet : ref 3.6V LS14250CNA.

So for now the computer keep bios configuration !

kind regards

Yahoo! Message number: 2888
Date: Sat, 07 Jun 2014 22:17:25 -0700
From: Josh Dersch
Subject: Re: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First)
text/plain; charset=UTF-8; format=flowed

It's also difficult to repair dead traces on this, the Compass has a 
muti-layer PCB and the corrosion on that board looks bad enough that 
inner traces have likely been corroded as well.  If you get it cleaned 
up and the traces don't look too bad, I can try to take some pictures of 
my 1101's motherboard for you.

It's a shame -- the 1100 is a very rare machine (I wasn't even aware 
that the 1100 existed, I thought the series started with the 1101 (which 
is already rare), the Wikipedia entry says that the 1100 existed only in 
marketing materials - I guess it's time to correct that.)

Just a warning to anyone with a Compass or some of the early GridCase 
machines (I know the GridCase 3 falls into this category) -- these have 
soldered-in NiCad batteries that *will* leak, if they haven't already.  
In the case of the Compass, they're easy to get to and easy to remove 
(just clip them off) and don't perform much of a vital function as 
batteries do in later systems, so replacing them is not as important.  
(In the Compass, they just keep the Real-Time Clock running, there are 
no CMOS settings to keep track of.)

- Josh

On 6/7/2014 8:59 PM, Shawnerz shawnerz@... [RuGRiD-Laptop] wrote:
> Wow. From the pictures you've shown, I do not think it can be 
> repaired.  I think you can clean the computer and remove the battery 
> acid with isopropyl alcohol.  I think that this is the "beginning of 
> the end" for this Grid.  If the traces on the motherboard are still 
> intact, I think the corrision will continue.  The circuit traces will 
> eventually fail.  I do not think your Grid will not last much longer.
> But isopropyl alcohol will do a good job in cleaning it up.
> Good luck,
> -Shawn
>
>
>
> ------------------------------------------------------------------------
> *From:* "lescovez@... [RuGRiD-Laptop]" 
> <RuGRiD-Laptop@yahoogroups.com>
> *To:* RuGRiD-Laptop@yahoogroups.com
> *Sent:* Saturday, June 7, 2014 7:11 PM
> *Subject:* [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First) 
> [2 Attachments]
>
> [Attachment(s) 
> <https://us-mg5.mail.yahoo.com/neo/launch?.rand=f6a08qmin8da8#TopText> 
> from lescovez@... [RuGRiD-Laptop] included below]
>
>
>
>
>
> 

Yahoo! Message number: 2889
Date: 08 Jun 2014 00:04:39 -0700
From: lescovez@...
Subject: Re: GRiD Compass Computer 1100 (The First)
text/plain; charset=utf-8

Thank you, Josh! I will wait on you detailed photos of your 1101. I still want to restore it if are damaged bridges I will solder the wire.

Yahoo! Message number: 2890
Date: 08 Jun 2014 00:39:08 -0700
From: lescovez@...
Subject: Re: GRiD Compass Computer 1100 (The First)
text/plain; charset=utf-8

I can try to clean the motherboard in an ultrasonic bath.

Yahoo! Message number: 2891
Date: Sun, 08 Jun 2014 01:41:19 -0700
From: Jim Stephens
Subject: Re: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First)
text/plain; charset=UTF-8; format=flowed

On 6/8/2014 12:39 AM, lescovez@... [RuGRiD-Laptop] wrote:
>
>
> I can try to clean the motherboard in an ultrasonic bath.
>
> 
Be careful doing this.  If you wash rocker switches after they have had 
the factor seal removed (which was done many years ago) they risk 
getting crap inside them that will kill them.

I don't know if you have those, but I have seen many boards killed from 
water / solvent baths with rocker switches.

jim

Yahoo! Message number: 2892
Date: Sun, 08 Jun 2014 09:52:44 -0400
From: shawnerz
Subject: RE: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First)
text/plain; charset=utf-8

Yes. Cleaning will remove the corrision. But how will you repair the damaged traces?

-------- Original message --------
From: "lescovez@yahoo.com [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> 
Date:08/06/2014  03:39  (GMT-05:00) 
To: RuGRiD-Laptop@yahoogroups.com 
Subject: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First) 



I can try to clean the motherboard in an ultrasonic bath. 

Yahoo! Message number: 2893
Date: 08 Jun 2014 07:48:35 -0700
From: lescovez@...
Subject: RE: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First)

Recovery traces by use of solder wires.

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

Yahoo! Message number: 2894
Date: 09 Jun 2014 13:41:17 -0700
From: klyball@...
Subject: RE: [RuGRiD-Laptop] Re: GRiD Compass Computer 1100 (The First)
text/plain; charset=utf-8

Hi you need to neutralize the acid ASAP use vinegar and toothbrush or baking soda mixed into a paste depending on the battery type STOP the damage get any affected components off the board , it is difficult to remove corroded components so be care but neutralize the acid ASAP then you can move forward, I have salvaged many damage boards,
  
 KLyball

Yahoo! Message number: 2895
Date: Sun, 17 Aug 2014 16:27:03 -0700
From: Daniel Vercillo
Subject: Grid Donation

To all members:

I would love to assist fellow enthusiasts.

I have a few grid laptops for parts, but these items were exposed to salt water...lots of it. If anyone is in need of parts I would only ask a pay pal donation for the delivery charge. I currently have 1 Grid Case 3, does not power on and is salty. �I have 2 1520s. One has a cracked LCD, the other is apart, both a little salty, but dry. I also have 2 ac power modules but they don't seem to work. �

Thank you!

-Dan

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

This is part 4 of a multi-part message.

Yahoo! Message number: 2896
Date: Mon, 18 Aug 2014 15:09:11 -0400
From: Beau Walker
Subject: Re: [RuGRiD-Laptop] Grid Donation [3 Attachments]
text/plain; charset=UTF-8

Do the 1520s have their sliding latches on both sides? I think mine is
missing one.


On Sun, Aug 17, 2014 at 7:27 PM, Daniel Vercillo ledzepthegreat@yahoo.com
[RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

>
>  [Attachment(s) <#147e64c01d9b2560_TopText> from Daniel Vercillo included
> below]
>
> To all members:
>
> I would love to assist fellow enthusiasts.
>
> I have a few grid laptops for parts, but these items were exposed to salt
> water...lots of it. If anyone is in need of parts I would only ask a pay
> pal donation for the delivery charge. I currently have 1 Grid Case 3, does
> not power on and is salty.  I have 2 1520s. One has a cracked LCD, the
> other is apart, both a little salty, but dry. I also have 2 ac power
> modules but they don't seem to work.
>
> Thank you!
>
> -Dan
>
>
>



--
Sent from my time machine

Yahoo! Message number: 2897
Date: 18 Aug 2014 13:29:00 -0700
From: ledzepthegreat@...
Subject: Re: Grid Donation

Hi Beau, 
 I attached photos of one of the 1520's side latches left and right.
 
 I can send you the screen assembly, then you can carve off what you need, and share the rest.
 
 This way I won't break anything.  Or i can try to pop these off myself.
 
 -Dan
  

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

Yahoo! Message number: 2898
Date: Tue, 19 Aug 2014 19:04:55 +0100
From: Athan DE JONG
Subject: Re : Re: [RuGRiD-Laptop] Grid Donation
text/plain; charset=utf-8

Hi i M in terres in thé gris case 3 !
Wolf y ou Shia to France ? 

Kindle regards athan

Envoyé depuis Yahoo Mail pour Android

Yahoo! Message number: 2899
Date: Wed, 20 Aug 2014 12:55:38 -0400
From: Beau Walker
Subject: Re: [RuGRiD-Laptop] Re: Grid Donation [2 Attachments]
text/plain; charset=UTF-8

Actually it does look like mine has a piece broken that holds that latch on
so I'll need the display plastics too.  The shipping address is below.
 Just let me know what you think it will be and I can paypal you the
postage.  Thanks

Noble Laptops
980 Old State Route 74
Batavia, OH 45103


On Mon, Aug 18, 2014 at 4:29 PM, ledzepthegreat@... [RuGRiD-Laptop] <
RuGRiD-Laptop@yahoogroups.com> wrote:

>
>  [Attachment(s) <#147eacf280b5570e_TopText> from ledzepthegreat@...
> [RuGRiD-Laptop] included below]
>
> Hi Beau,
> I attached photos of one of the 1520's side latches left and right.
> I can send you the screen assembly, then you can carve off what you need,
> and share the rest.
> This way I won't break anything.  Or i can try to pop these off myself.
> -Dan
>
>
>
>



--
Sent from my time machine

Yahoo! Message number: 2900
Date: 20 Aug 2014 17:37:46 -0700
From: klyball@...
Subject: Re: Grid Donation
text/plain; charset=utf-8

Hi Dan
  
 I would be interested in the gridcase 3 if you still have it, shipping would be to Canada postal code v3w0j8 
  
 Thanks 
 Grant
  
 klyball@hotmail.com

Yahoo! Message number: 2901
Date: 20 Aug 2014 18:16:34 -0700
From: ledzepthegreat@...
Subject: Re: [RuGRiD-Laptop] Re: Grid Donation [2 Attachments]
text/plain; charset=utf-8

Ok Beau, I will send this out tomorrow, and also send you a followup to let you know the details.   I will choose the cheapest shipping option. 
 Regards,
 Dan. 

Yahoo! Message number: 2902
Date: 20 Aug 2014 18:17:22 -0700
From: ledzepthegreat@...
Subject: Re: Grid Donation
text/plain; charset=utf-8

Hi Grant sorry, I will only ship within the U.S.A.  
 Regards,
 Dan
 

 

Yahoo! Message number: 2903
Date: 21 Aug 2014 09:21:50 -0700
From: ledzepthegreat@...
Subject: Re: [RuGRiD-Laptop] Re: Grid Donation [2 Attachments]
text/plain; charset=utf-8

Ok Beau,  
 Shes on her way to ya!  shipping is $10.50 Paypal is vercilld@gmail.com
 

 USPS Tracking is: 9114901189866380220763
 

 Hope this part helps you out.
 

 Regards,
 Dan

Yahoo! Message number: 2904
Date: Thu, 21 Aug 2014 18:43:14 -0700
From: Grant Shannon
Subject: RE: [RuGRiD-Laptop] Re: Grid Donation
text/plain; charset="Windows-1252"

I have a us address as I live only minutes from the border if that's ok

Regards

Grant Shannon #HB24728816 Peace Portal DrBlaine WA 98230-4010 United States
 To: RuGRiD-Laptop@yahoogroups.com
From: RuGRiD-Laptop@yahoogroups.com
Date: Wed, 20 Aug 2014 18:17:22 -0700
Subject: [RuGRiD-Laptop] Re: Grid Donation


























      Hi Grant sorry, I will only ship within the U.S.A. Regards,Dan









 

Yahoo! Message number: 2905
Date: 21 Aug 2014 18:50:06 -0700
From: ledzepthegreat@...
Subject: RE: [RuGRiD-Laptop] Re: Grid Donation
text/plain; charset=utf-8

Ok Grant, that will do.  I will get the Grid Case 3 shipped out tomorrow. 
 Regards,
 Dan

Yahoo! Message number: 2906
Date: 22 Aug 2014 10:36:05 -0700
From: ledzepthegreat@...
Subject: RE: [RuGRiD-Laptop] Re: Grid Donation
text/plain; charset=utf-8

Hi Grant, 
 She is on her way!
 

 Tracking USPS# 9114901189866380221432
 Shipping Cost is $12.35
 Paypal: vercilld@gmail.com
 

 Hope you can make use of those parts.
 

 Regards,
 -Dan
  

Yahoo! Message number: 2907
Date: Tue, 19 Aug 2014 19:12:11 +0100
From: Athan DE JONG
Subject: Re : Re: [RuGRiD-Laptop] Grid Donation
text/plain; charset=utf-8

Sorry about tiping would you ship to france

Regards

Envoyé depuis Yahoo Mail pour Android

Yahoo! Message number: 2908
Date: 26 Sep 2014 10:11:33 -0700
From: RuGRiD-Laptop@yahoogroups.com
Subject: New file uploaded to RuGRiD-Laptop

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the RuGRiD-Laptop
group.


  File        : /Gridcase Plus owners guide searchable pdf.pdf
  Uploaded by : hercule0164 <walton.david@...>
  Description : GridCase Plus (12xx) owners guide


You can access this file at the URL:
https://groups.yahoo.com/neo/groups/RuGRiD-Laptop/files/Gridcase%20Plus%20owners%20guide%20searchable%20pdf.pdf


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


hercule0164 <walton.david@...>

Yahoo! Message number: 2909
Date: 28 Oct 2014 16:03:10 -0700
From: ianfinder@...
Subject: Re: Grid Donation
text/plain; charset=utf-8

Do you have the DC/DC board from one of the Plasma-Equipped 1520s? if so I'd really like it. Thanks!

Yahoo! Message number: 2910
Date: 28 Oct 2014 16:04:11 -0700
From: ianfinder@...
Subject: Looking for 1520 PLASMA DC/DC board
text/plain; charset=utf-8

Please let me know if you have a DC/DC voltage regulator module for a plasma-equipped 1520... It'd save the day :)
 

 Thanks.

Yahoo! Message number: 2911
Date: 28 Oct 2014 16:38:04 -0700
From: ianfinder@...
Subject: Want to buy a Plasma / EL based GRiD & My GRiD saga thus far
text/plain; charset=utf-8

Hi folks,
 

 Title says all-- I'm just a twentysomething guy who has always wanted a GRiD. and I'm actively seeking to buy an electroluminescent or plasma display equipped unit.
 

 So far despite a fair amount of money and time, I'm 0 for 3 on achieving that goal.
 

 I'd prefer an EL-display machine, (like a GRiDcase 1-- I just missed an eBay auction for one :-( ) but *please* let me know if you have any non-lcd unit you'd consider parting with.
 

 Below is a log of my struggle, and some bits people might find interesting. I'd like to buy a working machine outright, but I imagine after I have one I'll be getting rid of a fair amount of the parts I've accumulated below.
 

 Cheers!
 

 ---------
 

 > Unit 1: GRiDcase 3, untested
 Bought this machine up untested without knowing how far gone it was-- has a heavy degree of battery damage. Despite being reasonably handy with electronics and soldering numerous bodge wires, I've been unable to sufficiently bring the board back. 
 

 *** Will happily give the parts of this machine away to anyone who needs them, except the display which I would like to keep.
 

 > Unit 2: GRiDcase 1520 plasma, working "as-is"
 Came from eBay. When it came to me, the screen didn't light up. I assumed the panel was broken in shipping, but using the very helpful docs someone posted in this group I've narrowed it down to the DC/DC board which does not produce the 33 volts needed. Replaced all the capacitors and diodes on the DC/DC to no avail.
 

 I'd still like to fix it, but if parts don't show up eventually, I will  part it out and give it away on this group.
 

 > Unit 3: GRiDcase 1537E electroluminescent, tempest shielded, working "as-is"
 Got this in a trade for some other equipment. Was super psyched to get it, but when I tried it I had no luck. Doesn't post with an external display, and I have no idea why. I also found two broken fuses on the board for the EL panel, but when I replaced them they just blew again.
 

 Would consider giving away / trading this unit as well.

Yahoo! Message number: 2912
Date: Tue, 28 Oct 2014 17:24:13 -0700
From: Jim Stephens
Subject: Re: [RuGRiD-Laptop] Want to buy a Plasma / EL based GRiD & My GRiD saga thus far
text/plain; charset=UTF-8; format=flowed

If it runs on 33V have you looked at the schematic and tried to supply 
the 33v from a bench supply?  Or maybe put a 10k load on the 33v board 
you have and look at what it is doing?  you may have other problems than 
that board.

Just curious if that is doable.  It may not be safe to try to run it 
with it taken apart, as I've not had one of them to try to do that.

jim

On 10/28/2014 4:38 PM, ianfinder@... [RuGRiD-Laptop] wrote:
>
>
> Hi folks,
>
>
> Title says all-- I'm just a twentysomething guy who has always wanted 
> a GRiD. and I'm actively seeking to buy an electroluminescent or 
> plasma display equipped unit.
>
>
> So far despite a fair amount of money and time, I'm 0 for 3 on 
> achieving that goal.
>
>
> I'd prefer an EL-display machine, (like a GRiDcase 1-- I just missed 
> an eBay auction for one :-( ) but *please* let me know if you have any 
> non-lcd unit you'd consider parting with.
>
>
> Below is a log of my struggle, and some bits people might find 
> interesting. I'd like to buy a working machine outright, but I imagine 
> after I have one I'll be getting rid of a fair amount of the parts 
> I've accumulated below.
>
>
> Cheers!
>
>
> ---------
>
>
> > Unit 1: GRiDcase 3, untested
>
> Bought this machine up untested without knowing how far gone it was-- 
> has a heavy degree of battery damage. Despite being reasonably handy 
> with electronics and soldering numerous bodge wires, I've been unable 
> to sufficiently bring the board back.
>
>
> *** Will happily give the parts of this machine away to anyone who 
> needs them, except the display which I would like to keep.
>
>
> > Unit 2: GRiDcase 1520 plasma, working "as-is"
>
> Came from eBay. When it came to me, the screen didn't light up. I 
> assumed the panel was broken in shipping, but using the very helpful 
> docs someone posted in this group I've narrowed it down to the DC/DC 
> board which does not produce the 33 volts needed. Replaced all the 
> capacitors and diodes on the DC/DC to no avail.
>
>
> I'd still like to fix it, but if parts don't show up eventually, I 
> will  part it out and give it away on this group.
>
>
> > Unit 3: GRiDcase 1537E electroluminescent, tempest shielded, working "as-is"
>
> Got this in a trade for some other equipment. Was super psyched to get 
> it, but when I tried it I had no luck. Doesn't post with an external 
> display, and I have no idea why. I also found two broken fuses on the 
> board for the EL panel, but when I replaced them they just blew again.
>
>
> Would consider giving away / trading this unit as well.
>
>
>
> 

Yahoo! Message number: 2913
Date: Wed, 29 Oct 2014 00:57:22 +0000 (UTC)
From: Ian Finder
Subject: Re: [RuGRiD-Laptop] Want to buy a Plasma / EL based GRiD & My GRiD saga thus far
text/plain; charset=UTF-8

Thanks for the suggestion :)
I haven't got a schematic- AFAIK there is not one in any of the files in this group, but I am still 95% positive the problem is with the DC/DC board as I have probed all the outputs and inputs to it, as well as at the panel connection-- both with the panel connected and disconnected--  and they all seem correct aside from the glaring omission of the higher panel voltage.
Would rather not wire a lab supply into this...
FWIW as a last ditch I've also tried the GRiDcase 3 display on the 1520 and I don't get anything, although they appear to be the same display. Didn't expect anything without panel voltage present. :)
Either way, I've put in enough hours replacing components on the darn board itself that I've given up unless I can find a replacement DC/DC.
Other than the display & obvious RTC battery the machine seems to work.

     On Tuesday, October 28, 2014 5:24 PM, "Jim Stephens jws@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> wrote:


      If it runs on 33V have you looked at the schematic and tried to supply the 33v from a bench supply?  Or maybe put a 10k load on the 33v board you have and look at what it is doing?  you may have other problems than that board.

 Just curious if that is doable.  It may not be safe to try to run it with it taken apart, as I've not had one of them to try to do that.

 jim

 On 10/28/2014 4:38 PM, ianfinder@... [RuGRiD-Laptop] wrote:

 Hi folks,
  Title says all-- I'm just a twentysomething guy who has always wanted a GRiD. and I'm actively seeking to buy an electroluminescent or plasma display equipped unit.
  So far despite a fair amount of money and time, I'm 0 for 3 on achieving that goal.
  I'd prefer an EL-display machine, (like a GRiDcase 1-- I just missed an eBay auction for one :-( ) but *please* let me know if you have any non-lcd unit you'd consider parting with.
  Below is a log of my struggle, and some bits people might find interesting. I'd like to buy a working machine outright, but I imagine after I have one I'll be getting rid of a fair amount of the parts I've accumulated below.
  Cheers!
  ---------
  > Unit 1: GRiDcase 3, untested Bought this machine up untested without knowing how far gone it was-- has a heavy degree of battery damage. Despite being reasonably handy with electronics and soldering numerous bodge wires, I've been unable to sufficiently bring the board back.
  *** Will happily give the parts of this machine away to anyone who needs them, except the display which I would like to keep.
  > Unit 2: GRiDcase 1520 plasma, working "as-is" Came from eBay. When it came to me, the screen didn't light up. I assumed the panel was broken in shipping, but using the very helpful docs someone posted in this group I've narrowed it down to the DC/DC board which does not produce the 33 volts needed. Replaced all the capacitors and diodes on the DC/DC to no avail.
  I'd still like to fix it, but if parts don't show up eventually, I will  part it out and give it away on this group.
  > Unit 3: GRiDcase 1537E electroluminescent, tempest shielded, working "as-is" Got this in a trade for some other equipment. Was super psyched to get it, but when I tried it I had no luck. Doesn't post with an external display, and I have no idea why. I also found two broken fuses on the board for the EL panel, but when I replaced them they just blew again.
  Would consider giving away / trading this unit as well.

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Yahoo! Message number: 2914
Date: Wed, 29 Oct 2014 04:37:09 +0000
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiBbUnVHUmlELUxhcHRvcF0gUmU6IEdyaWQgRG9uYXRpb24=?=
text/plain; charset=utf-8

New plasma still selling.
Scott Smith
Computer Fusion
3516 Tarrant Main (DOCK 2)
Euless TX 76040
United States

Voice +001  817-354-4446
Fax +001 815-366-8093
scottsmith@...
AOL messenger:  ScottSmith007


среда, 29 октября 2014 5:03 "ianfinder@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> писал(а):




Do you have the DC/DC board from one of the Plasma-Equipped 1520s? if so I'd really like it. Thanks!

Yahoo! Message number: 2915
Date: 03 Nov 2014 16:00:11 -0800
From: lescovez@...
Subject: Grid Compass
text/plain; charset=utf-8

Hello!
I propose to do the following. All owners of the Grid Compass post here info on the serial number of the computer. So you can find out who is the oldest of them. The serial number of my motherboard 100341-00. The data are served on a voluntary agreement.

  

Yahoo! Message number: 2916
Date: 03 Nov 2014 16:01:45 -0800
From: lescovez@...
Subject: Re: Grid Compass

This is part 2 of a multi-part message.

Yahoo! Message number: 2917
Date: Mon, 3 Nov 2014 18:07:42 -0800
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Grid Compass

Crap.  Now I have to go to my storage building! ;-)
-Shawn
P.S.  I don't think I have a Compass.  I think I only have 1520's and a 1550SX.
P.S.S. Sorry, I don't have an extra power supply for the EL display.  If I did have one, I'd offer it up.
--------------------------------------------
On Mon, 11/3/14, lescovez@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] Grid Compass
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Monday, November 3, 2014, 7:00 PM










        



















 Hello!
 I propose to do the following. All owners of the Grid
 Compass post here info on the serial number of the computer.
 So you can find out who is the oldest of them. The serial
 number of my motherboard 100341-00. The data are served on a
 voluntary agreement.
  

Yahoo! Message number: 2918
Date: Mon, 3 Nov 2014 18:10:57 -0800
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Grid Compass

I just want to be sure. From your picture, you realize the serial number 8356 and not 100341-00, right?
--------------------------------------------
On Mon, 11/3/14, lescovez@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] Grid Compass
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Monday, November 3, 2014, 7:00 PM









 




















 Hello!
 I propose to do the following. All owners of the Grid
 Compass post here info on the serial number of the computer.
 So you can find out who is the oldest of them. The serial
 number of my motherboard 100341-00. The data are served on a
 voluntary agreement.
  

Yahoo! Message number: 2919
Date: 03 Nov 2014 21:26:27 -0800
From: lescovez@...
Subject: Re: [RuGRiD-Laptop] Grid Compass
text/plain; charset=utf-8

Glenn Edens said: I’m pretty sure the pre-production units serial numbers started with 09xxxx-xx
100001-00-Steve Jobs
 100002-00-William Buckley
 100003-00-Robert Noyce or Gordon Moore
 8356 - probably another additional code

 Let's find out.)

 

Yahoo! Message number: 2920
Date: Mon, 03 Nov 2014 21:51:35 -0800
From: Josh Dersch
Subject: Re: [RuGRiD-Laptop] Grid Compass
text/plain; charset=UTF-8; format=flowed

As others have stated, the serial number of your unit is the handwritten 
3356 (or is it 9356? 8356?).  The 100341-00 is the Assembly number of 
the PCB, indicating the internal part number of the Main Logic Board -- 
it is not a unique identifier.

For the record, my 1101's Logic Board has no serial number penciled in 
at all.  (The assembly # is different than yours, 10033-__ (nothing 
written in for the last segment).  What model is yours from?

Josh

On 11/3/2014 9:26 PM, lescovez@... [RuGRiD-Laptop] wrote:
>
> Glenn Edens said: Im pretty sure the pre-production units serial 
> numbers started with 09xxxx-xx
> 100001-00-Steve Jobs
> 100002-00-William Buckley
> 100003-00-Robert Noyce or Gordon Moore
>
> 8356 - probably another additional code
> Let's find out.)
>
> 

Yahoo! Message number: 2921
Date: Tue, 4 Nov 2014 07:08:51 +0000
From: =?utf-8?B?0K7RgNC40Lkg0JvQtdGB0LrQvtCy0LXRhg==?=
Subject: =?utf-8?B?0J7RgtCyOiBbUnVHUmlELUxhcHRvcF0gR3JpZCBDb21wYXNz?=
text/plain; charset=utf-8

Model GRiD Compass 1100. ASSY NO. 100341-00 REV. W SER NO. 3356.
Attach a photo of your number, it's very interesting. We will learn the differences.



вторник, 4 ноября 2014 11:51 "Josh Dersch derschjo@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> писал(а):



 
As others have stated, the serial number of your unit is the handwritten 3356 (or is it 9356? 8356?).  The 100341-00 is the Assembly number of the PCB, indicating the internal part number of the Main Logic Board -- it is not a unique identifier.

For the record, my 1101's Logic Board has no serial number
      penciled in at all.  (The assembly # is different than yours,
      10033-__ (nothing written in for the last segment).  What model is
      yours from?

Josh

On 11/3/2014 9:26 PM, lescovez@... [RuGRiD-Laptop] wrote:


>Glenn Edens said: I’m pretty sure the pre-production units serial numbers started with 09xxxx-xx
>100001-00-Steve Jobs
>100002-00-William Buckley
>100003-00-Robert Noyce or Gordon Moore
>
>8356 - probably another additional code
>
>Let's find out.)
>
>
>

Yahoo! Message number: 2922
Date: 05 Nov 2014 17:18:38 -0800
From: rinoasupergenius@...
Subject: 1520 1-3-3 beep code and tripped internal shock sensor.
text/plain; charset=utf-8

i recently picked up this GRiDCase 1520 from ebay for 60$ and it looks quite bashed up, also looks like somebody gave it to a 12 year old and let them rip it apart....although it looks like most of the parts/screws are there so it was probably just an adult who doesnt know a thing about computers.

here's a video i made of it. 1986 GRiDCase 1520 rugged 286 laptop https://www.youtube.com/watch?v=I2WzJqKiJeE&feature=gp-n-y&google_comment_id=z12hs55izwjzdhfsl235yf14lqqdxrp1d

i will most likely take the internals out and save them so i can fiddle with them latter, and add a new motherboard that can run windows XP and whatnot. perhaps an intel NUC. so it's not like i need to get the stock components working, but it would be nice to hear some input. i've already read through a lot of the manuals supplied by this yahoo group and think the issue is the RAM controller...and most likely a lot of other things also.

i would also love to know more about how sensitive that tripped shock sensor is. i dont know if it only trips for light shocks or if like you throw it out of a 2 story window.
 
 
 https://www.youtube.com/watch?v=I2WzJqKiJeE&feature=gp-n-y&google_comment_id=z12hs55izwjzdhfsl235yf14lqqdxrp1d 
 
 1986 GRiDCase 1520 rugged 286 laptop https://www.youtube.com/watch?v=I2WzJqKiJeE&feature=gp-n-y&google_comment_id=z12hs55izwjzdhfsl235yf14lqqdxrp1d i've since found a yahoo groups called RuGRiD that had the service manual, 1-3-3 beeps at startup means bad RAM. so i may be able to fix this. i dont feel li...
 
 
 
 View on www.youtube.com https://www.youtube.com/watch?v=I2WzJqKiJeE&feature=gp-n-y&google_comment_id=z12hs55izwjzdhfsl235yf14lqqdxrp1d 
 Preview by Yahoo 
 
 
  

 

Yahoo! Message number: 2923
Date: Wed, 5 Nov 2014 19:00:44 -0800
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] 1520 1-3-3 beep code and tripped internal shock sensor.

Mario,
Wow.  OK, so watching your video.  I watched it once and now going to make comments and fill in with (useless) trivia.  Let's see here...

At 2:35, the power supply comes out.  There used to be a Ni-Cd battery pack that could replace the AC power supply.  You could run the Grid in a more portable fashion.

4:20 you mentioned the ROMs.  The ROM are/were used to hold the bootable OS.  You could have GRiDDOS or MS-DOS.  I think the MS-DOS was 2.3.  There would be no hard drive and you'd store whatever program data to floppy.

5:20 you mention the phone connectors.  As you probably know, when using a modem on a POTS line, you still want to use your phone when the computer was not using the line.  So, the phone would plug in to one of the ports, and you'd plug the other cord (coming from the wall) in to the Grid.  When the modem was not in use, you are able to use the phone like normal.

5:32 notice the DC power connector on the AC power supply?  There was another cord that allowed you to connect to the Grid.  This way, you could recharge the Ni-Cd battery pack.  I do not remember if the power supply could charge the battery pack and operate the 1520 at the same time. I think it could.  Supplying 3.7 amps, the Grid draws a little more than an amp, so it should be able to do both at the same time.

6:30 the screen controls are brightness and contrast.

7:00 that shouldn't have been able to come straight off.  It was missing the two screws that point towards the back just above the keyboard.  It's hard to describe their location in an email.

7:24 That 2nd power supply is a DC-DC converter to drive the display.  There are two different types of DC-DC converters.  They type installed depends on the type of display.  That is the 20 watt DC-DC converter.  I believe the EL display DC-DC converter is 37 watts. OH, another point: AFAIK, there are only two displays for the 1520: the blue/black LCD that you have, or the orange/black plasma (or EL or whatever it's called).  This answers your question at 21:45.

7:58 SIPP RAM.  You could expand it to 2 MB *IF* you can't find the RAM.  It is very rare.  Another member and I have tried modifying SIMM RAM.  The problem is SIMMs are too tall.  Electrically, they're the same.  Physically, SIMM's tend to be too tall.  it's hard to find RAM to fit.

8:58 Yes, that's the graphics card.

9:02 The empty socket is for the -287 math co-processor.

9:48 Yes, you can put in a faster processor.  Just make sure the components can keep up.  But at the end of the day, it's still gonna be a -286.

10:48 Yes, it's IDE but I believe the pinout is flipped.

10:50  It looks bad, but don't worry about it.  The Grid's I have all show that and still work OK.  That isn't the cause of the problems.

11:20  Hard drive issues.  They have vexed us all on the group.  The Holy Grail that we've been searching for is to boot the 1520 from Compact Flash instead of trying to depend on the old hard drives.  *Just recently* a member informed us that we've been thinking about the hard drive problem backwards.  We've assumed the hard drive told the BIOS the drive Cylinder Head Sector (CHS) pre-comp, and Landing Zone information.  It doesn't.  At boot, the BIOS asks the hard drive, "What are you?"  The drive says, "I'm a CP-3024 (or whatever)."
In the BIOS code, there are CHS, pre-comp, and LZ that the BIOS tries in order to find the Master Boot Record.  Nowadays, IDE drives already know their CHS information and report that to the BIOS.  This is why, later in your video, the software was able to identify the drive, but not "mount" the drive and display it's data.

13:20  Have you ever gotten the freezing trick to work?  I still try it on any hard drive with problems, but I've never gotten it to work.  I think it's a wives tale. ;-)

14:32 That liquid is the lubrication for the bearings of the hard drive.  It usually causes the death of the hard drive as the bearings have no lubrication.  Although, I will say that I still have a couple drives that still work even thought I've seen the residue of the lubrication.

16:00 All hope is *not* lost.  Have faith, my friend. :)  If the -286 socket is still making contact with the motherboard, I do not see a reason why the 1520 will not boot.

18:35 That's the modem you removed.  You can keep it out if you like.  The computer runs just fine without it.

19:40 Hope.  Yes, the RAM chips are 256k.  Try this: just boot the Grid with 2 RAM sticks.  The trick is finding Bank 0 and Bank 1.  I can't remember if they're right next to each other, or separated by 4 rows.  Try moving the two RAM sticks to the sockets closest to the keyboard and see if it boots.  Let's assume the row closest to the keyboard is slot 1  If the Grid does not boot with RAM in slots 1 and 2, move the SIPP in slot 2 to slot 5.  I'm pretty sure a -286 can boot with 256k of RAM.  So, try booting it 1 RAM stick in slot 1.  It might work.

21:29  I would not bother.  That's a lot of work.

I'm pretty sure your Grid will boot.  Once it does, we'll get you through the Dallas 1287 problem you alluded to earlier. ;-)

Please let us know if you get the 1520 to boot! :)
-Shawn

--------------------------------------------
On Wed, 11/5/14, rinoasupergenius@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] 1520 1-3-3 beep code and tripped internal shock sensor.
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Wednesday, November 5, 2014, 8:18 PM






























 i recently picked up this GRiDCase 1520 from ebay for 60$
 and it looks quite bashed up, also looks like somebody gave
 it to a 12 year old and let them rip it apart....although it
 looks like most of the parts/screws are there so it was
 probably just an adult who doesnt know a thing about
 computers.

 here's a video i made of it. 1986
 GRiDCase 1520 rugged 286 laptop

 i will most likely take the internals out and save them so i
 can fiddle with them latter, and add a new motherboard that
 can run windows XP and whatnot. perhaps an intel NUC. so
 it's not like i need to get the stock components
 working, but it would be nice to hear some input. i've
 already read through a lot of the manuals supplied by this
 yahoo group and think the issue is the RAM controller...and
 most likely a lot of other things also.

 i would also love to know more about how sensitive that
 tripped shock sensor is. i dont know if it only trips for
 light shocks or if like you throw it out of a 2 story
 window.







    1986
 GRiDCase 1520 rugged 286 laptop   i've since found a
 yahoo groups called RuGRiD that had the service manual,
 1-3-3 beeps at startup means bad RAM. so i may be able to
 fix this. i dont feel li...



 View on www.youtube.com




 Preview by Yahoo
     

Yahoo! Message number: 2924
Date: 05 Nov 2014 21:19:38 -0800
From: rinoasupergenius@...
Subject: Re: 1520 1-3-3 beep code and tripped internal shock sensor.
text/plain; charset=utf-8

thanks for taking the time to go through all that. i knew most of it but some i never would have found out. btw i already know how to fix the dallas chip.

i tried a lot of RAM configurations today and absoutly no changes. i'll still fiddle with it some more though. i think the best idea would be to retrofit this GRiDCase like i'm doing with my Kaypro 4. if i do that i would be able to give a few parts to people that need them for their GRiDs.

Yahoo! Message number: 2925
Date: Thu, 6 Nov 2014 15:16:42 -0800
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: 1520 1-3-3 beep code and tripped internal shock sensor.

A couple more quick thoughts.
You could try removing the modem and seeing if it will boot without the modem.  It's highly unlikely, but perhaps the modem is seizing the bus.  Like I said, it's highly unlikely, but it's a quick check.
A second, and more likely source of the problem, thing to do is look at the PROM BIOS chips.  Those are the ones, towards the center of the board, with the checksum on top.  Not the one in the lower left corner.
On some motherboards, they were not socketed.  I couldn't tell in your video if they were socketed or not.  If they're socketed, remove them and make sure there are no bent pins.  You might want to try reversing the odd and even chips.  Since it was taken apart before, it's possible the person who had it before you took them out and did not put them back in the proper socket.
If all else fails, if you like, I'd be willing to take a look at it.  You can email me directly.
Good luck,
-Shawn
--------------------------------------------
On Thu, 11/6/14, rinoasupergenius@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] Re: 1520 1-3-3 beep code and tripped internal shock sensor.
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Thursday, November 6, 2014, 12:19 AM


 thanks for taking the time to go through all that. i knew
 most of it but some i never would have found out. btw i
 already know how to fix the dallas chip.

 i tried a lot of RAM configurations today and
 absoutly no changes. i'll still fiddle with it some more
 though. i think the best idea would be to retrofit this
 GRiDCase like i'm doing with my Kaypro 4. if i do that i
 would be able to give a few parts to people that need them
 for their GRiDs.






 

Yahoo! Message number: 2927
Date: 18 Dec 2014 17:46:53 -0800
From: klyball@...
Subject: compass software
text/plain; charset=utf-8

Hi
 

 i am looking for any compass software pre gridcase 3 that has sound , i wrote a program for the compass and would like to add some tones
  mov dl, 07
mov ah, 2
int 21h is too slow and i would like to change the tone up
 

 using the standard ports does not seem to work
 

 Thanks
 

 Grant

Yahoo! Message number: 2928
Date: Fri, 19 Dec 2014 00:51:34 -0500
From: TechX XZPhoto
Subject: Re: [RuGRiD-Laptop] compass software
text/plain; charset=UTF-8

Hi Grant.
What a coincidence. Just earlier tonight I was reading about your work on
the Sentry Gun program for the Gridcase on alienslegacy. Very impressive
project )) Are you still programing it in assembly? Do you have it uploaded
yet in its current state for testing?

As for the sound have you scrolled through all the files available on this
site? I'll search through my files... If I come across anything I'll let
you know.

Good luck!


On Thu, Dec 18, 2014 at 8:46 PM, klyball@... [RuGRiD-Laptop] <
RuGRiD-Laptop@yahoogroups.com> wrote:
>
>
>
> Hi
>
>
> i am looking for any compass software pre gridcase 3 that has sound , i
> wrote a program for the compass and would like to add some tones
>
>  mov dl, 07
> mov ah, 2
> int 21h
> is too slow and i would like to change the tone up
>
> using the standard ports does not seem to work
>
>
> Thanks
>
>
> Grant
>
>
>

Yahoo! Message number: 2929
Date: 20 Dec 2014 10:21:55 -0800
From: klyball@...
Subject: Re: [RuGRiD-Laptop] compass software
text/plain; charset=utf-8

TechX 

 i have checked all the files here, but have not found anything i haven't already checked.
  the grid os for compass has a sound driver but i don't think it was implemented but i need to find a example of sound running to i can trace it  ,i have my 1139 hooked up to my logic analyzer with a 8086 probe pod and running inverse assembler and my next step will be to pull apart the screen and trace the speaker wires back though the board ,then figure out the addresses for the chips controlling the sound , i wrote the program 100% assembly as it was the only way i found to get it to run fast enough. the 1520,30 version needs a couple of tweaks, and to get it to run on a gridcase 3 it would need a complete rewrite .
 What type of grid do you have ?
 

 Grant

Yahoo! Message number: 2930
Date: 20 Dec 2014 23:04:21 -0800
From: email4kenb@...
Subject: Re: compass software
text/plain; charset=utf-8

Hi. Isn't there a little piezo speaker on the board somewhere? The speaker should be controlled by a port. And if I remember correctly to get a long beep by turning on and off the gate you have to create a loop. I found some notes that may help. 
https://courses.engr.illinois.edu/ece390/books/labmanual/io-devices-speaker.html https://courses.engr.illinois.edu/ece390/books/labmanual/io-devices-speaker.html  
 http://www.intel-assembler.it/portale/5/make-sound-from-the-speaker-in-assembly/8255-8255-8284-asm-program-example.asp http://www.intel-assembler.it/portale/5/make-sound-from-the-speaker-in-assembly/8255-8255-8284-asm-program-example.asp
  
http://www.edaboard.com/thread182595.html http://www.edaboard.com/thread182595.html

I've got a 1520 with the gas plasma. It's kinda busy around here with the holidays, but I'll try to look inside when I have a free minute.
Have a great weekend.  
  

Yahoo! Message number: 2931
Date: 21 Dec 2014 00:26:43 -0800
From: klyball@...
Subject: Re: compass software
text/plain; charset=utf-8

Thanks for the links,  i have been down that road . The compass is not ibm compatible so it does not conform to those standards nothing about the compass is standard its its own beast.  The 15XX and the gridcase 3 are ibm compatible so that code would work , the speaker on a compass is in the screen 
 

 Grant
 

 

 

 

Yahoo! Message number: 2932
Date: 21 Dec 2014 01:06:57 -0800
From: email4kenb@...
Subject: Re: compass software
text/plain; charset=utf-8

Alright, now I see why you went to work with an analyzer and a probe )) 
Have you also tried contacting the guys at old-computers.com? They have a few grids including an 1129 and 1139. Maybe they also have a program with sound. 
I'll keep looking around for something that may help.

Ken aka TechX

Yahoo! Message number: 2933
Date: 21 Dec 2014 09:31:01 -0800
From: klyball@...
Subject: Re: compass software
text/plain; charset=utf-8

My thought was to trace into the int 21h for the dos beep, but dos 2.11 debug dos not trace interupts that was not implemented untill dos 3 and compass dos is 2.11, i have now captured the code for the dos beep and also the code for the modem dial tones with my inverse assembler so i should be able to see how the sound is being made from that when get a chance to sift though it.

Yahoo! Message number: 2934
Date: 26 Jan 2015 14:59:30 -0800
From: touchetek@...
Subject: Any way to vet IDT7MP456S30S for GRiD
text/plain; charset=utf-8

They might be 1MB sipps.
They have been on ebay for a long time i think.
I've come up dry on whether these might work in 
a 1530.

 

Yahoo! Message number: 2935
Date: Mon, 26 Jan 2015 18:27:07 -0800
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Any way to vet IDT7MP456S30S for GRiD

The short answer: no. It looks like they might be too tall.
But for $10 each, I'm willing to give it a try.
If other: want a link, it is here: http://www.ebay.com/itm/IDT7MP456S30S-IDT-SIPP-Memory-Module-8MP456-New-/120481786038?pt=LH_DefaultDomain_0&hash=item1c0d4628b6
Thank you for letting us know,
-Shawn
--------------------------------------------
On Mon, 1/26/15, touchetek@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] Any way to vet IDT7MP456S30S for GRiD
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Monday, January 26, 2015, 5:59 PM




 

























 They might be 1MB sipps.
 They have been on ebay for a long time i think.
 I've come up dry on whether these might work in
 a 1530.

Yahoo! Message number: 2936
Date: 26 Jan 2015 22:04:47 -0800
From: touchetek@...
Subject: Re: [RuGRiD-Laptop] Any way to vet IDT7MP456S30S for GRiD
text/plain; charset=utf-8

Height isn't as restrictive as I thought.
I have a set RAMs that has 9 chips, fairly small ones, on a board
that is 1.5cm in height.  Though these sipps don't function, 
they do clear the height restriction.

The ebay sipps don't appear to be any taller than these ones I have
in hand.  Let us know how they work out!
Could open a new source.

A while back somebody was considering making a modern
memory replacement for the sipps.
Did I miss anything on that?

-DC

Yahoo! Message number: 2937
Date: 01 Feb 2015 09:24:41 -0800
From: touchetek@...
Subject: FYI: Where the memory slot documention is:
text/plain; charset=utf-8

A while back I yanked the memory from a 1520.
By the time I got around to replacing it I didn't know the slot configuration.
(Unusual to not have a taken a photograph)
Took me a while to find the memory configuration diagram.
Unintuitive to me its in the disassembly / reassembly manual, page 3-29.
I thought I knew the right way to install these, but I did not, hence
no power on love... but not yep!  For me it was U61&62 & U65/66 for
the 4 256K memory boards.


 

Yahoo! Message number: 2938
Date: Sun, 1 Feb 2015 11:03:16 -0800
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] FYI: Where the memory slot documention is:

Touchetek,
I'm a little confused by your email.
Is your 1520 working now? Or, do you need the documentation?
Thanks,
-Shawn

--------------------------------------------
On Sun, 2/1/15, touchetek@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] FYI: Where the memory slot documention is:
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Sunday, February 1, 2015, 12:24 PM






























 A while back I yanked the memory from a 1520.
 By the time I got around to replacing it I didn't know
 the slot configuration.
 (Unusual to not have a taken a photograph)
 Took me a while to find the memory configuration diagram.
 Unintuitive to me its in the disassembly / reassembly
 manual, page 3-29.
 I thought I knew the right way to install these, but I did
 not, hence
 no power on love... but not yep!  For me it was
 U61&62 & U65/66 for
 the 4 256K memory boards.









 

Yahoo! Message number: 2939
Date: 01 Feb 2015 11:07:33 -0800
From: shawnerz@...
Subject: Re: 1520 1-3-3 beep code and tripped internal shock sensor.
text/plain; charset=utf-8

Mario, I was just curious: any progress or changes with your 1520?
 Thanks,
 -Shawn

Yahoo! Message number: 2940
Date: Sun, 1 Feb 2015 23:34:31 -0500
From: robert
Subject: Grid parts for sale
text/plain; charset=UTF-8

Listed lots of grid items on eBay under seller teddyesther. 230 and 1500
series parts.

Yahoo! Message number: 2941
Date: 02 Feb 2015 06:20:42 -0800
From: touchetek@...
Subject: Re: [RuGRiD-Laptop] FYI: Where the memory slot documention is:
text/plain; charset=utf-8

Sorry to confuse you.
After finding the right table documenting the right slots to fill, I'm now good to go.
I thought someone else might benefit by knowing where the documentation for the memory configurations can be found.
So its only got 1024M of memory, but at least it powers on and tries to boot.
I think this 1520 will need some dallas chip work to move forward.

Yahoo! Message number: 2942
Date: Mon, 02 Feb 2015 12:15:11 -0500
From: shawnerz
Subject: Re: [RuGRiD-Laptop] FYI: Where the memory slot documention is:
text/plain; charset=utf-8

Ok, thanks. Good to know its trying to boot.
Yes, the Dallas RTC problem is a bear. :-(
-Shawn

-------- Original message --------
From: "touchetek@gmail.com [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> 
Date:02/02/2015  09:20  (GMT-05:00) 
To: RuGRiD-Laptop@yahoogroups.com 
Subject: Re: [RuGRiD-Laptop] FYI: Where the memory slot documention is: 



Sorry to confuse you.
After finding the right table documenting the right slots to fill, I'm now good to go.
I thought someone else might benefit by knowing where the documentation for the memory configurations can be found.
So its only got 1024M of memory, but at least it powers on and tries to boot.
I think this 1520 will need some dallas chip work to move forward. 

Yahoo! Message number: 2943
Date: Mon, 02 Feb 2015 12:21:41 -0500
From: shawnerz
Subject: RE: [RuGRiD-Laptop] Grid parts for sale
text/plain; charset=utf-8

Ok, thanks for letting us know. :-)
Thanks,
-Shawn

-------- Original message --------
From: "robert dcat4955@gmail.com [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> 
Date:01/02/2015  23:34  (GMT-05:00) 
To: RuGRiD-Laptop@yahoogroups.com 
Subject: [RuGRiD-Laptop] Grid parts for sale 



Listed lots of grid items on eBay under seller teddyesther. 230 and 1500 series parts.

Yahoo! Message number: 2944
Date: 03 Feb 2015 06:04:26 -0800
From: touchetek@...
Subject: Re: [RuGRiD-Laptop] FYI: Where the memory slot documention is:
text/plain; charset=utf-8

I did a successful lobotomy on a Dallas IC in a 1530.
I think it was my first vintage repair a few years ago!
A little nerve wracking until you have those contacts exposed.
The 1520 reports "bad configuration data" or something to that effect.
I forgot what I had to do to the 1530 after I got the battery working.... I didn't think I'd be doing this
again or I would have taken better notes.
DC

Yahoo! Message number: 2945
Date: 03 Feb 2015 07:00:14 -0800
From: Jeriddian@...
Subject: Re: [RuGRiD-Laptop] FYI: Where the memory slot documention is:
text/plain; charset=utf-8

Hey, Dougmemphis,

Once you get the 1530 RTC chip back to working, things should be pretty much automatic. You may have to boot the computer a couple of times to get the RTC chip to read everything again, as it may need to re-establish all the parameters in the RTC on one boot so that the next time it can be read into RAM memory and wake up everything, but that should be all you have to do, If you ever need to replace the RTC chip, or even you need to just remove it, I constructed a small tutorial on how to do that with the following PDF file.  All my files are downloadable, and you can get the list form the files section. For this particular job, you can go to:

www.omnipulsemedia.com/GRiD_files/Removing and Replacing the 1287A RTC Timing Chip.pdf

Copy and paste into the address bar, and you can get the file in PDF format. I hope that makes things easier.

Phil

Yahoo! Message number: 2946
Date: 03 Feb 2015 20:17:17 -0800
From: touchetek@...
Subject: Re: [RuGRiD-Laptop] FYI: Where the memory slot documention is:
text/plain; charset=utf-8

Thank you- I may have followed your procedure last time.

Yahoo! Message number: 2947
Date: 14 Feb 2015 15:06:36 -0800
From: klyball@...
Subject: Compass Software
text/plain; charset=utf-8

I just acquired a large collection of compass software and manuals I will archive as time allows :)
  
 GRID-OS 3.0.1   
GRID-OS 3.1.0A -GRIDTERM -3010 -VT100
GRID-OS 3.0.1A -GRIDREFORMAT -GRIDACCESS -GRIDTRANSFER
GRID-OS 3.0.1A   
GRIDMASTER 3.1.7   
GRIDWRITE 3.1.6   
GRIDPAINT 3.1.0   
MANAGMENT TOOLS 3.1.0   
MANAGMENT TOOLS 3.1.0A   
DEVELOPMENT TOOLS 3.1.0   
DEVELOPMENT LIBRARIES 3.1.0   
GRIDTERM/REFORMAT 3.1.5   
GRID COMPASS DOS 2.11 C
GRID COMPASS DOS 2.11  
SOFTWARE UPGRADES FOR 113X VER 3.1.5   
GRID PROGRAMS 1   
GRID PROGRAMS 2   
GRID PROGRAMS 3   
GRID PROGRAMS 4   
GRID PROGRAMS 5   
SOFTWARE DRIVERS & FONTS   
GRID MASTER 3.1.5   
   
LOTUS123 SYSTEM DISK   
LOTUS123 UTILITY DISK   
LOTUS123 PRINT GRAPH DISK   
LOTUS123 TUTORIAL DISK 1   
LOTUS123 TUTORIAL DISK 2   
LOTUS123 TUTORIAL DISK 3   
   
BRAID TELEX MANAGER V4.4   
 ELECTRIC DESK DEMO

Yahoo! Message number: 2948
Date: Sun, 15 Feb 2015 12:04:08 +1100
From: Nigel Williams
Subject: Re: [RuGRiD-Laptop] Compass Software
text/plain; charset=UTF-8

On Sun, Feb 15, 2015 at 10:06 AM, klyball@... [RuGRiD-Laptop] <
RuGRiD-Laptop@yahoogroups.com> wrote:

>
>  I just acquired a large collection of compass software and manuals I
> will archive as time allows :)
>

Yes please! good work on the acquisition!

I would very much like to get a copy of GRiDTerm and the various other GRiD
applications, many I've never seen but oblique references in various
product literature or on the old other GRiD forum (now defunct).

Yahoo! Message number: 2949
Date: Sun, 22 Feb 2015 16:40:17 +0000 (UTC)
From: John ocallaghan
Subject: Re: [RuGRiD-Laptop] Want to buy a Plasma / EL based GRiD & My GRiD saga thus far
text/plain; charset=UTF-8

Hi ian finder,
If you are still offering the damaged GRiDcase 3 unit, I would like to have just the motherboard. I'm in the Chicago, IL area and will pay the shipping cost.Do you accept Paypal?Thanks,-John


     On Tuesday, October 28, 2014 8:00 PM, "Ian Finder ianfinder@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> wrote:


     Thanks for the suggestion :)
I haven't got a schematic- AFAIK there is not one in any of the files in this group, but I am still 95% positive the problem is with the DC/DC board as I have probed all the outputs and inputs to it, as well as at the panel connection-- both with the panel connected and disconnected--  and they all seem correct aside from the glaring omission of the higher panel voltage.
Would rather not wire a lab supply into this...
FWIW as a last ditch I've also tried the GRiDcase 3 display on the 1520 and I don't get anything, although they appear to be the same display. Didn't expect anything without panel voltage present. :)
Either way, I've put in enough hours replacing components on the darn board itself that I've given up unless I can find a replacement DC/DC.
Other than the display & obvious RTC battery the machine seems to work.

     On Tuesday, October 28, 2014 5:24 PM, "Jim Stephens jws@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> wrote:


      If it runs on 33V have you looked at the schematic and tried to supply the 33v from a bench supply?  Or maybe put a 10k load on the 33v board you have and look at what it is doing?  you may have other problems than that board.

 Just curious if that is doable.  It may not be safe to try to run it with it taken apart, as I've not had one of them to try to do that.

 jim

 On 10/28/2014 4:38 PM, ianfinder@... [RuGRiD-Laptop] wrote:

 Hi folks,
  Title says all-- I'm just a twentysomething guy who has always wanted a GRiD. and I'm actively seeking to buy an electroluminescent or plasma display equipped unit.
  So far despite a fair amount of money and time, I'm 0 for 3 on achieving that goal.
  I'd prefer an EL-display machine, (like a GRiDcase 1-- I just missed an eBay auction for one :-( ) but *please* let me know if you have any non-lcd unit you'd consider parting with.
  Below is a log of my struggle, and some bits people might find interesting. I'd like to buy a working machine outright, but I imagine after I have one I'll be getting rid of a fair amount of the parts I've accumulated below.
  Cheers!
  ---------
  > Unit 1: GRiDcase 3, untested Bought this machine up untested without knowing how far gone it was-- has a heavy degree of battery damage. Despite being reasonably handy with electronics and soldering numerous bodge wires, I've been unable to sufficiently bring the board back.
  *** Will happily give the parts of this machine away to anyone who needs them, except the display which I would like to keep.
  > Unit 2: GRiDcase 1520 plasma, working "as-is" Came from eBay. When it came to me, the screen didn't light up. I assumed the panel was broken in shipping, but using the very helpful docs someone posted in this group I've narrowed it down to the DC/DC board which does not produce the 33 volts needed. Replaced all the capacitors and diodes on the DC/DC to no avail.
  I'd still like to fix it, but if parts don't show up eventually, I will  part it out and give it away on this group.
  > Unit 3: GRiDcase 1537E electroluminescent, tempest shielded, working "as-is" Got this in a trade for some other equipment. Was super psyched to get it, but when I tried it I had no luck. Doesn't post with an external display, and I have no idea why. I also found two broken fuses on the board for the EL panel, but when I replaced them they just blew again.
  Would consider giving away / trading this unit as well.



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Yahoo! Message number: 2950
Date: 16 Mar 2015 19:24:49 -0700
From: touchetek@...
Subject: Gridcase 3 help
text/plain; charset=utf-8

Hi GRiDGuYS

I have a new-to-me floppy based GridCase3 with a gas-plasma display.
DOS & MSWord in ROM.  Its in nice shape.
I know nothing about GRiDCase3 models...

I think it boots properly out of ROM.
The phoenix BIOS loads and it prompts for date time like
an IBM 5150 as if no RTC, so I guess that's normal.
It boots to A: prompt which I guess could be normal, but I
guess I expected that it would consider the ROM as C:

Here's the wierd stuff:

With no floppy in the drive, DIR seeks to the floppy then reports
the ROM dos files as A:
Why seek?

DIR lists a screen full of dos items, assign, format, diskcopy,  chkdsk, word.com, mw.pgm, etc. DIR lists some 300KB free.

chkdsk works, but reports some 600KB free 600vs300?

Has MSWord in ROM, but doesn't work all the way, tries to access a .tmp file which it can't find and error exits after prompting for a retry.

It gets read errors in fresh formatted 720K and 1.44M floppies.

Any familiar failure modes here?

I have done some work with 15xx GRiDs over the last two years here on this board.  I guess I'm starting from scratch with this one included pointers to
the docs

Thanks in advance... I 

 

Yahoo! Message number: 2951
Date: Mon, 16 Mar 2015 19:38:45 -0700
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Gridcase 3 help

Touchetek,

I could be wrong, but I think the ROM is loaded in to RAM and then booted.  This is the reason why the ROM is not C:\ and why dir returns the directory for A:\
-Shawn

--------------------------------------------
On Mon, 3/16/15, touchetek@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] Gridcase 3 help
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Monday, March 16, 2015, 10:24 PM

 Hi GRiDGuYS

 I have a new-to-me floppy based GridCase3 with a gas-plasma
 display.
 DOS & MSWord in ROM.  Its in nice shape.
 I know nothing about GRiDCase3 models...

 I think it boots properly out of ROM.
 The phoenix BIOS loads and it prompts for date time like
 an IBM 5150 as if no RTC, so I guess that's normal.
 It boots to A: prompt which I guess could be normal, but I
 guess I expected that it would consider the ROM as C:

 Here's the wierd stuff:

 With no floppy in the drive, DIR seeks to the floppy then
 reports
 the ROM dos files as A:
 Why seek?

 DIR lists a screen full of dos items, assign, format,
 diskcopy,  chkdsk, word.com, mw.pgm, etc. DIR lists
 some 300KB free.

 chkdsk works, but reports some 600KB free 600vs300?

 Has MSWord in ROM, but doesn't work all the way, tries
 to access a .tmp file which it can't find and error
 exits after prompting for a retry.

 It gets read errors in fresh formatted 720K and 1.44M
 floppies.

 Any familiar failure modes here?

 I have done some work with 15xx GRiDs over the last two
 years here on this board.  I guess I'm starting
 from scratch with this one included pointers to
 the docs

 Thanks in advance... I

Yahoo! Message number: 2952
Date: 16 Mar 2015 21:17:48 -0700
From: touchetek@...
Subject: Re: [RuGRiD-Laptop] Gridcase 3 help
text/plain; charset=utf-8

Thanks! 

I found a blog that described that the ROM files get listed as if they were on the A: drive.  Apparently if there was a valid floppy in the drive, the ROM files would list along with those... seems impossibly confusion to me if that's the case.

So that's a bit strange, but I've never worked with  PC environment that had a ROM file system.  Closest thing would be PC MS basic in rom as in a 5150 class PC.  And that wasn't so much a file system as one application.

Anyway, I think the fundamental problem here is the floppy drive.
I think the problem with MS Word is that it is trying to create a temp file on the floppy, but it can't get access the floppy.  Nor can I.  I cannot read or format a floppy in the drive. (which I now know is 720K)

This could be a problem with the floppy or some bios/system issue 
making the floppy not work.
Not sure how I'll diagnose that.  
I don't t have a known good drive to swap.
The connections are not standard.
I have an external 1.44MB drive for GRiD but it is probably not compatible.

So I cycled the power and it maintained the date/time.
So there is a RTC in there. I better check the battery condition.

So close!
It MUST be fixed!!  :)

Yahoo! Message number: 2953
Date: 16 Mar 2015 21:28:59 -0700
From: Jeriddian@...
Subject: Re: [RuGRiD-Laptop] Gridcase 3 help
text/plain; charset=utf-8

Actually, touchetek,
 

 What happens is that GRiD constructed Gridcase3 (and the 1500 series computers also) so that the ROM chip is considered by the OS as part of the floppy disk. So, in other words, instead of having a 1.44 Mb floppy, when there is a ROM chip in place (usually 128 Kb), you actually have a 1.57 Mb floppy disk, with 128 Kb of that disk as unwritable. That's why it always returns to the A:/ prompt, because the computer is being led to believe it's reading the OS boot up instructions off the A:/ drive. Even if the computer sees no actual floppy disk in the drive, but sees the ROM ship, then it believes there is a floppy disk in the drive, only its capacity is just 128 Kb, and cannot be written to, thus still returning the prompt to the A:/ drive.
 

 On the other errors, you are dealing with a very primitive version of MSDOS, and that could account for the problems. For a Gridcase3, the DOS was no better than version 2.1 or so, That may have been before it could even read 3.5 inch disk capacities, or even the 1.2 MB or 1.44 Mb capacities. That primitive DOS might also explain some of the other errors as well.
 

 Hope that helps.

Yahoo! Message number: 2954
Date: 17 Mar 2015 05:54:11 -0700
From: touchetek@...
Subject: Re: Gridcase 3 help
text/plain; charset=utf-8

Thank you for the ROM details. What a weird idea they had to piggy back on A:.
So anyway, yes the DOS is primitive, but its installed in the ROM so it must have been
proper for the factory installed 720K drive, yes?
But that drive is not accessible.

I think I need a known good 720K drive.

I'll ask if anyone has one....

Thanks!

Yahoo! Message number: 2955
Date: 17 Mar 2015 05:55:44 -0700
From: touchetek@...
Subject: Need a 720K GRiDCase 3 floppy drive to test with.
text/plain; charset=utf-8

Any parts machines out there that could loan or sell a floppy drive?

Thanks!

DC
 

Yahoo! Message number: 2956
Date: Tue, 17 Mar 2015 09:34:26 -0700
From: Matthew Noble
Subject: Able to send messages to the group
text/plain; charset=us-ascii

Here is my request to send emails to the group.

Thank you,

Matt

Yahoo! Message number: 2957
Date: 17 Mar 2015 11:33:58 -0700
From: touchetek@...
Subject: Re: Compass Software
text/plain; charset=utf-8

Nice haul!  All compass? 123 seems later...

Yahoo! Message number: 2958
Date: 17 Mar 2015 11:35:21 -0700
From: touchetek@...
Subject: Re: [RuGRiD-Laptop] Want to buy a Plasma / EL based GRiD & My GRiD saga thus far
text/plain; charset=utf-8

Just ran across this... if the machine is parting out I'm needing a floppy drive if it had it.
Thanks!

Yahoo! Message number: 2959
Date: 23 Mar 2015 21:34:51 -0700
From: touchetek@...
Subject: GRiDCase 3 Documentation?
text/plain; charset=utf-8

Looks like the 3 is not so well represented in the files section as the 15xx series.  Anyone have private stashes?

 

Yahoo! Message number: 2960
Date: Tue, 24 Mar 2015 06:08:07 -0400
From: shawn
Subject: RE: [RuGRiD-Laptop] GRiDCase 3 Documentation?
text/plain; charset=utf-8

Sorry, I do not.
-Shawn

-------- Original message --------
From: "touchetek@gmail.com [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com> 
Date:24/03/2015  00:34  (GMT-05:00) 
To: RuGRiD-Laptop@yahoogroups.com 
Subject: [RuGRiD-Laptop] GRiDCase 3 Documentation? 



Looks like the 3 is not so well represented in the files section as the 15xx series.  Anyone have private stashes?

Yahoo! Message number: 2961
Date: 27 Mar 2015 11:13:20 -0700
From: mnoble2@...
Subject: Needed Grid Housing parts... Monitor latches

I have a project with a Grid Compass Shell.


I parted it out a defective Compass, only need the rom socket trays....and I'm left with the magnesium body.


I am recreating the now missing shell parts via 3d printer.  


I'm looking to see if anyone has some spare monitor latch set.

Thank you,



If anyone is missing a rom cover, I can upload an stl file that you can print out.

See attached pict

This is part 2 of a multi-part message.

Yahoo! Message number: 2962
Date: 05 Apr 2015 11:53:32 -0700
From: touchetek@...
Subject: Re: Any way to vet IDT7MP456S30S for GRiD
text/plain; charset=utf-8

So did you get some and did they work?

Yahoo! Message number: 2963
Date: Sun, 5 Apr 2015 12:23:51 -0700
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Re: Any way to vet IDT7MP456S30S for GRiD

I think you meant the SIPP RAM.  If that is true, yes, I did buy 4 RAM SIPP modules. But, I have tested them to see if they work.
Thanks,
-Shawn
--------------------------------------------
On Sun, 4/5/15, touchetek@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] Re: Any way to vet IDT7MP456S30S for GRiD
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Sunday, April 5, 2015, 2:53 PM










       



















 So did you get some and did they work?

Yahoo! Message number: 2964
Date: 22 May 2015 14:04:37 -0700
From: joshuaparkour@...
Subject: Gridcase 1520

Hello! I recently bought a gridcase 1520 off eBay. The owner advertised it as not working however the only apparent problems it seemed to have was a broken hard drive and a stopped real time clock... Is there a place where I can buy/fix the real time clock? I ordered a replacement 40mb Connor hard drive. I am also looking for battery's as well. What type of keyboard connector is used in the 1520? I have also not been able to find a disk image of GRID OS which I would like to use, is it somewhere in the files section? Any help would be appreciated.

Yahoo! Message number: 2965
Date: Fri, 22 May 2015 19:26:56 -0700
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Gridcase 1520

Hello Josh,
Welcome to the group.
Let's take the questions one by one.

> the only apparent problems it seemed to have was a broken hard drive and a stopped real time clock.
This is very common problem. Just about every Grid has this problem....unless the user has already replaced the parts.

>Is there a place where I can buy/fix the real time clock?
No, but yes. The part is a Dallas DS1287 chip. It's been out of production for many years. Google the part and you'll see creative ways people have fixed or modified their DS1287's.

> I ordered a replacement 40mb Connor hard drive.
Where did you find one? I'm kind of curious. I'll warn you the "just any old drive" will not work. If it is a Connor, and the replacement drive still works, then it should work. The Connor's have IDE connectors, but it is an early IDE specification. If you take a newr IDE drive, you'll notice that the pins don't line up correctly.

> I am also looking for battery's as well.
Do you mean the main laptop battery for portable operation? You'll have to rebuild the battery pack. The Ni-Cad's in the original packs probably died by 1995.

> What type of keyboard connector is used in the 1520?
I assume you mean the rear panel, right? My Grids are in storage. I'm trying to do this from memory. If there is a keyboard connector on the rear, it would be a larger DIN connector. DIN to PS/2 adapters are available.

> GRID OS which I would like to use, is it somewhere in the files section?
Since you sent this email earlier today, you probably know the answer to this question by now. :-) But the answer is yes. In the Files section of the group is MS-DOS 2.2 and 3.3.

Good luck and please let us know how you make out.
-Shawn
--------------------------------------------
On Fri, 5/22/15, joshuaparkour@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] Gridcase 1520
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Friday, May 22, 2015, 5:04 PM

 Hello! I recently bought a gridcase
 1520 off eBay. The owner advertised it as not working
 however the only apparent problems it seemed to have was a
 broken hard drive and a stopped real time clock... Is there
 a place where I can buy/fix the real time clock? I ordered a
 replacement 40mb Connor hard drive. I am also looking for
 battery's as well. What type of keyboard connector is used
 in the 1520? I have also not been able to find a disk image
 of GRID OS which I would like to use, is it somewhere in the
 files section? Any help would be appreciated.

 ------------------------------------
 Posted by: joshuaparkour@...
 ------------------------------------

 http://groups.yahoo.com/group/rugrid-laptop/
 ------------------------------------

 Yahoo Groups Links


 � � RuGRiD-Laptop-fullfeatured@yahoogroups.com

Yahoo! Message number: 2966
Date: 22 May 2015 22:12:02 -0700
From: Jeriddian@...
Subject: Re: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

Hi, Josh,
 

 I just wanted to add some additional comments to Shawn's words.
 

 1. The reason the HDD does not work is because the CMOS battery in the Dallas DS1287 RTC chip is dead. Once that battery is replaced, by whatever method, the computer will recognize the HDD again and it will work. However, also be aware that the old Conner drives often died on their own, and thus need replacing. As to the Conner drives, there are only six specific Conner drives that will be accepted by the old BIOS in this computer (unless you alter the BIOS, something Shawn and I have both done to some of our units), but only four of them are relevant. This HDD specific models are the CP3024, CP3044, CP30104, and CP3104. Only these models will work in this computer, so be sure that this is what you have bought.
 

 2. As to the Dallas DS 1287A RTC chip, they are rare, but they can be found out there on the web. You need to know that the modern replacement chip for the 1287A is called the DS 12887A, and you must understand it WILL NOT WORK in this computer. You must have an original DS 1287A replacement. However, the other problem you may have is that you may not be able to replace the DS 1287A in the 1520 (unlike the 1530), because doing so locks the BIOS into an unending loop of trying to boot the computer due to the BIOS asking for a password which does not exist. For some reason the computer recognizes the chip has been replaced and asks for a password which cannot be answered. I have a fix for that, but it also requires altering the BIOS and burning new BIOS chips. Some people on the forum have replaced the DS1287A on their 1520's without that problem and successfully booted their computers. Some haven't, including me. To be sure, there is a method of taking the old 1287A out and burring out the old battery connections and then attaching a new battery, then reinstalling the chip on the motherboard. The instructions for that are in our files.
 

 3. If your computer has the Dallas DS 1287A, the CMOS battery is within the chip, therefore you do not need another CMOS battery. Some models of this computer used a Motorola RTC chip with an external Tadiran CMOS battery soldered to the motherboard. That probably is not the case with your unit. If you are taking about the external battery, Shawn is right, you'll have to completely rebuild that thing.
 

 4. The keyboard connector in the back of the computer is indeed a DIN. You also have the serial port for a mouse, but it would have to be the original mouse with the serial connector, not a PS2 (unless you have specific software that will connect a PS2 mouse). I am not sure if the using a PS2 keyboard will work through an adapter though, but I think it does.
 

 5. Shawn is correct on the OS, although you can load as high as DOS 6.22 if you so desire. I would avoid DOS 4 or 5 though as they aren't too stable.
 

 I hope that helps you,
 

 Phil
 

 

Yahoo! Message number: 2967
Date: 23 May 2015 14:43:17 -0700
From: joshuaparkour@...
Subject: Re: [RuGRiD-Laptop] Gridcase 1520

Thank you all for your quick and helpful feedback. Unfortunately the hard drive was a Connor 40mb cp3000.
 Do you know if that will fit the ide connector on a grid 1520? I might have to edit the bios to make it work though... The laptop I purchased didn't come with a battery, but it did come with a power supply to fit in the battery/power supply slot. Does someone know where a dead one is so that I could rebuild it? I noticed something curious behind the power supply. There are rows of pins like that run along the back. Do you know what that is?

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

Yahoo! Message number: 2968
Date: 23 May 2015 21:19:14 -0700
From: Jeriddian@...
Subject: Re: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

Hi, Josh,
 

 The CP3000 does have the correct configuration to fit the backplate connection for the hard drive in the Grid 1520, so physically, you can fit it into the computer. However, you will have to configure new BIOS chips for the computer to enable it to see the drive. Even then, there's a chance it might not be recognized, although I think it most likely will be seen and recognized by the 1520. You would have to dump the contents of the original BIOS into a binary file and then alter the code to put in the name of the drive in the one section where the allowed hard drives are listed, as well as inputting  its CHS parameters in a separate area of the code where there is a table listing hard drive parameters. You would then take this altered BIOS file and burn new EPROM BIOS chips for the computer. It takes a little bit of work and you would have to have the equipment to do it (binary file editing software on a separate computer, EPROM burner equipment, and of course the proper EPROM chips). The exact method on how to do this is listed in the files of this forum, in Shawn's files in particular. However, you would have to get a copy of that BIOS from our files section to start, or if you repair the Dallas RTC chip and refresh the battery, also as per Shawn's files, you may find the hard drive will suddenly wake up and become functional. If the 1520 runs now, you can still dump the BIOS onto a floppy, without having a functional HDD. BTW, if you want to see how to take the computer apart, look in the files sections for an uploaded file in my name that has all of my available files. One of files in my list gives you a URL to a PDF file that shows you how to do this (and also how to take out the Dallas RTC 1287A chip).
 

 It might be easier to find a standard HDD, especially if you want more space, as the CP3104 and CP30104 drives are 100 MB drives. I believe one of these is a half height drive. The other is a full height drive. You can't use the full height drive with a floppy drive. I used to have the sites of two or three independent outlets of old parts that still stocked the hard drives, but they all seemed to have stopped selling them at this time. I haven't bought from them in years. However, there seem to be a good number of these old units for sale on ebay. It depends on whether you want to spend the money to get another hard drive. If not, you can try to modify the BIOS and burn new chips, as you mentioned.
 

 The power supply can be connected to the computer in two ways. You can directly insert it into the back slot of the computer. That's how those two metal tabs on the inserting face of the power supply connect with two terminals in the computer to supply power. The other way is to connect a separate power cable to the power supply into the little three pin connector you also see on the insertion face of the power supply (Your picture shows this very well), and which connects to another plug on the back of the computer at the lower right corner just under and to the right of the insertion slot. This allows you to power the computer with the power supply while doing something different with the slot. For example you could charge the NiCad battery in the slot while powering the computer with the power supply (actually, that's the only way you can do it, if you don't have the separate battery charger). But also, this computer came with some other peripherals packaged in the same physical compartment box configuration as the power supply and battery pack. These are things like extra serial ports, parallel ports, ethernet connections, and other such hardware devices, including enclosed cards to connect external hard drives. That's where those rows of pins you mention come in. Those pins (both sets) are a connection directly to the computer bus itself, a separate and extra IDE connection. Those connectors are there solely to connect these extra peripheral hardware options. You would run the power supply outside the computer with the connecting cable, and then use whichever peripheral you needed at the time within the insertion slot.
 

 I do have a couple of dead battery packs myself. I just haven't gotten around to fixing them.
 

 Good luck,
 

 Phil

Yahoo! Message number: 2969
Date: 24 May 2015 13:36:01 -0700
From: joshuaparkour@...
Subject: Re: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

Thank you for your help! I found a hard drive that might work however is the CP30104H a full height hard drive? I don't want a full size hard drive if it means I have to remove the floppy. I use the floppy for booting and data transfer currently so I don't want it removed. Also would you be willing to sell one or two of your dead battery's for the Gridcase? Is there anyplace that sells the cables and peripherals needed? Finally does the SIPPS ram it take 30pin?

Yahoo! Message number: 2970
Date: 24 May 2015 20:28:10 -0700
From: Jeriddian@...
Subject: Re: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

Hi, Josh,
 

 I had to go back and look at my files and I have to make a slight correction. Below are the actual HDD listed in the BIOS:
 

 CP3022     Half height Drive     20 MB
 CP3024     Half height Drive     20 MB
 CP3044     Half height Drive     40 MB
 CP3042     Half height Drive     40 MB
 CP344       Full height Drive     40 MB
 CP3104     Full height Drive     100 MB
 

 Now, the CP30104 is NOT listed, and it is a half height drive, however, I believe it will still work as I remember putting 30104's in a couple of my units without altering the BIOS, and they worked. The CP30104H is not exactly the same drive. Below are the specifications pages I found. There are slight differences in them.
 

 http://www.4drives.com/DRIVESPECS/CONNER/557.txt
http://www.4drives.com/DRIVESPECS/CONNER/558.txt http://www.4drives.com/DRIVESPECS/CONNER/558.txt
 

 So, the CP30104H may still work as well, but I cannot be sure. The difference in the half height and full height versions, in terms of naming, is the placing of that extra zero after the first numeral 3, so it might be that the drive will put out both numbers to be able to be accepted by the BIOS, although I am guessing at that. If you google the drives by their names, you will still find some vendors out there that have them, as well as ebay.
 

 I don't mind letting you have one of the dead batteries I have for you to work on. If you could work on another one and refurbish it and return it, I would appreciate having that in return for giving you the other one.
 

 As to the peripheral insertion slot plug in units, they are truly long gone. I haven't seen any on the web or for sale in many, many years, nor do I have any of them. Some of the other members might have some of them. The usual peripherals seen are the ones plugged into the serial ports, which are external floppy drives, both 3.5" and 5.25", a numeric keypad, and others I can't think of right now. I haven't seen them available for years either.
 

 I only have one external power cable to plug in the power supply externally, and I don't think you could find one out there. You might be able to find the adapter for it and make your own cord, but I also doubt that. However, it only a two line direct current power cable with a positive voltage and a negative ground which goes into a standard power plug on the computer. You may have to take apart the power supply and substitute a more common adapter to be able to connect your power supply externally. It shouldn't be too hard to do. I've seen some people do that to their power supplies when they couldn't find the cord with that weird three prong adapter on it which goes into the power supply.
 

 I don't know of any place that specifically sells those cables and peripherals. I've never seen them on the web when I've searched for GRiD parts in the past. I only found HDD, memory sticks, Tadiran CMOS batteries, and sometimes parts for inside the computer. Perhaps some of the others on the forum may know better than  me.
 

 As to the SIPP's, they are indeed 30 pin SIPP's. However be careful. ONLY the low profile SIPP's can fit in the computer. Most of the ones still out there are taller ones, which definitely will not fit into the case. Also, just about the only thing you can find out there now are the 256Kb SIPP's. The 1MB SIPP's have pretty much disappeared. We have been searching for ways around this problem, including soldering pins to 1 MB SIMM's which are more common, but so far nobody has been successful at it. The computer will take only 1 MB (4x256Kb), 2 MB (8x256K), 4 MB (4x1MB), or 8MB of RAM (8x1MB). They must be of a minimum of 80 ms speed. 60 ms or 70 ms is better. Although this is a 32 bit computer, and MSDOS should theoretically be able to access a full 16 MB RAM, this particular computer is hardware limited to only 8 MB maximum.
 

 Good luck
 

 Phil
 

Yahoo! Message number: 2971
Date: 27 May 2015 14:05:25 -0700
From: joshuaparkour@...
Subject: Re: [RuGRiD-Laptop] Gridcase 1520

Thank you for your through response. I would be interested in repairing those battery's. Please write me if you're willing to go through with it. As for accessories, would an external IBM 3 1/2 inch parallel port drive work with the grid? Considering that these computers are IBM compatible it should work. Do you need a specific driver since it is not a plug and play port? 

Yahoo! Message number: 2972
Date: Wed, 27 May 2015 23:00:20 -0500
From: Jared Dion
Subject: RE: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset="Windows-1252"

Hi, Josh,

I'll be glad to send you the batteries. I always wanted to have a working one myself. It is true that the computer is an IBM compatible, but as to the accessories, no, you cannot use an IBM 3.5 floppy drive as the connection for them is proprietary to GRiD for its external devices such as the floppy drives. The connection for the floppies is a DB25 connector, the same as a parallel port, but GRiD wires them differently to connect devices. In addition, GRiD blocks pin 1 with an insert to prevent you from trying to put anything else in that connector except the actual GRiD device on which Pin 1 has been removed on its male connector. You will see those two 25 pin DB connecters on the back. One is of course the standard parallel printer port, but the other is that proprietary GRiD connector. You do not need any software to connect the GRiD peripherals. The computer will recognize them automatically. As to non-GRiD devices, usually, the only thing you can do in order to connect to peripherals other than GRiD, is to use the parallel or serial ports in some way. There were third party vendors for various things back in those days that did that sort of thing. If you can find them, for example, you can sometimes find portable SCSI adapters (such as the Adaptec MiniSCSI) which basically used the parallel port as a portal to a SCSI connector, and then of course you can connect SCSI devices to it, including floppies, HDD, even CD drives, and Ethernet connections too (although as primitive as DOS was, I doubt it would be effective at all outside of old time BBS service). It is possible to put Windows 3.1 on the machine, but it is slower than molasses, at least in my experience. GRiD does have a methodology by which you can connect to GRiD computers together using the other 9 pin DB connector on the back of the computer (the male ones), although I have never used it myself. GRiD had that option as a way to transfer files back and forth between computers. There is specific software in the files section that addresses that. The modem, of course, was only 2400 baud max dial up, and too slow to be of any real use these days.

If you will give me your address, I will send you the batteries. Thanks.

Phil

To: RuGRiD-Laptop@yahoogroups.com
From: RuGRiD-Laptop@yahoogroups.com
Date: Wed, 27 May 2015 14:05:25 -0700
Subject: Re: [RuGRiD-Laptop] Gridcase 1520


























      Thank you for your through response. I would be interested in repairing those battery's. Please write me if you're willing to go through with it. As for accessories, would an external IBM 3 1/2 inch parallel port drive work with the grid? Considering that these computers are IBM compatible it should work. Do you need a specific driver since it is not a plug and play port?

Yahoo! Message number: 2973
Date: 07 Jun 2015 13:16:27 -0700
From: joshuaparkour@...
Subject: RE: [RuGRiD-Laptop] Gridcase 1520

Sorry about the late response. I was busy for a few days. I will get back to you on the battery's. However right now I have to do a little more research on the subject before I take on another project... Currently I am having trouble replacing the hard drive. The instructions for taking apart these computers says that I should be able to remove hard drive by wiggling it away from the back plate, but it does not want to come loose and I am worried about breaking the backplate. Are the hard drives sometimes soldered to the backplate? I also added a math coprocessor which seems to work. Is there a vga cartrage that will work? I have a copy of windows 3.0 which I will use. It comes with native cga support and different modes for low performance 8086,80286 and 80386 processors so it seemed the best choice.

Yahoo! Message number: 2974
Date: 07 Jun 2015 16:18:04 -0700
From: joshuaparkour@...
Subject: RE: [RuGRiD-Laptop] Gridcase 1520

Here is a few images.

This is part 2 of a multi-part message.

This is part 3 of a multi-part message.

This is part 4 of a multi-part message.

This is part 5 of a multi-part message.

Yahoo! Message number: 2975
Date: Sun, 7 Jun 2015 20:00:34 -0700
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Gridcase 1520

Josh,
I saw your pictures in the other email.  Your Grid looks to be in great condition. Nice and clean! :)
Yes, you should be able to wiggle it away from the back plate.  The 40 pin IDE and the power connector do tend to hold tightly. Maybe a large flatblade screwdriver used to pry against the connectors might help.  Of course, do it gently. As far as I know, it is not soldered. My experience has been that the 4 pin power connector holds much more tightly than the 40 pin IDE connector.
I have run Windows 3.11 on my 1520 and it seemed to work OK.
Good luck to you,
-Shawn
--------------------------------------------
On Sun, 6/7/15, joshuaparkour@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: RE: [RuGRiD-Laptop] Gridcase 1520
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Sunday, June 7, 2015, 4:16 PM

 Sorry about the late response. I was
 busy for a few days. I will get back to you on the
 battery's. However right now I have to do a little more
 research on the subject before I take on another project...
 Currently I am having trouble replacing the hard drive. The
 instructions for taking apart these computers says that I
 should be able to remove hard drive by wiggling it away from
 the back plate, but it does not want to come loose and I am
 worried about breaking the backplate. Are the hard drives
 sometimes soldered to the backplate? I also added a math
 coprocessor which seems to work. Is there a vga cartrage
 that will work? I have a copy of windows 3.0 which I will
 use. It comes with native cga support and different modes
 for low performance 8086,80286 and 80386 processors so it
 seemed the best choice.

 ------------------------------------
 Posted by: joshuaparkour@...
 ------------------------------------

 http://groups.yahoo.com/group/rugrid-laptop/
 ------------------------------------

 Yahoo Groups Links


 � � RuGRiD-Laptop-fullfeatured@yahoogroups.com

Yahoo! Message number: 2976
Date: 07 Jun 2015 21:04:26 -0700
From: Jeriddian@...
Subject: RE: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

Hi, Josh,
 

 Yes, Shawn is right. The back plate is not soldered to the HDD, but it is tightly plugged in and it is a little tricky in freeing it. Gently prying it apart as he mentioned is the way to go. Note that the floppy drive is plugged in as well so you will unplug both of them at the same time. The math coprocessor is nice and there are some programs that can make use of it, although none come to mind that I can recall. They did make a VGA cartridge to update the EGA to VGA, but as I said, these cartridges that plug into the battery/power supply slot are so rare, they are impossible to find. I happen to have one, but it is the only one I have ever seen. I bought it as part of one 1520 unit that was for sale on Ebay, and the only reason I did buy that 1520 was just for that accessory. I'm not willing to part with mine. You probably won't find it sold by itself, but usually as part and parcel of a whole unit that someone is selling, as the people who are selling them don't know what they have, or anything specific about the GRiD's they are selling. The only other way to do this is to replace the screen with a VGA screen, which was only offered on the 1530's I think. When looking at GRiD's online, you will know if it is VGA if the output video plug on the back is a 15 pin VGA plug instead of a 9 pin DB connector. If you do this, you must remember to also replace the video card and the rear power supply, as they are specific for that particular screen as well. You will know the video card is correct as the VGA video card has no pins for RAM chips, unlike the EGA cards which do. Best of luck
 

 Phil.

Yahoo! Message number: 2977
Date: 10 Jun 2015 17:58:01 -0700
From: joshuaparkour@...
Subject: RE: [RuGRiD-Laptop] Gridcase 1520

Thanks for the help. I did what you said and replaced the hard drive. I think the graphics are CGA not EGA. I started the laptop and heard the hard drive spin up. However  gridscan did not show it as 100mb instead showing as 0mb GRiD type 0.  IDE Id showed it as being an unformatted 120mb hard disk? It is a Connor cp30104H hard disk... Do I need to reflash the bios or is it a formatting issue?
Thanks again for your support.

Yahoo! Message number: 2978
Date: 10 Jun 2015 20:37:40 -0700
From: Jeriddian@...
Subject: RE: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

        You are correct on the Graphics, I believe. They are only CGA. The CP30104 should be seen by the BIOS, even though it is not strictly defined there when you look at the code. I think that is because the BIOS will allow the substitution of the CP30104 for the CP3104, which is defined there. I don't know how, but that is what worked for me when I tried it. Because GRIDSCAN has seen the device and given you its specs, your computer does recognize it, therefore your BIOS does not have to be altered. And it is also correct that the CP30104 is actually a 120 MB drive, so that is also correct. If the computer had not recognized the HDD, GRDSCAN should never have seen it at all. It relies on the BIOS to tell the program what is there in the computer.
         Therefore all you need to do is format the drive. However, there are two types of formatting. Low level and high level. Low level is automatic these days and done at the factory, but back in the 1980's it was not always the case. Right now, even though GRIDSCAN can see the drive, your DOS cannot, due to lack of formatting. A regular DOS format is a high level format which will initiate the bookkeeping tables on the drive and write some dummy tracks. But to do this, the drive must be low level formatted, which actually causes the HDD to define the physical tracks and sectors on the drive which will be used for reading and recording. Sometimes those old drives were not low level formatted. However, chances are yours is already low level formatted. Go ahead and try the regular DOS (high level) format. If it works, you're home free. If not, you may need to find a low level format program out there to do that job first.
 

 Good luck,
 

 Phil

Yahoo! Message number: 2979
Date: Wed, 10 Jun 2015 20:42:30 -0700
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Gridcase 1520

Josh,
The BIOS connot be "reflashed." It is burned in to two EPROMs on the motherboard.

So, I take it you were successful in separating the old hard drive from mounting board. That's good. :)

I have never seen a drive report at 0 mB Grid Type 0. I'm not saying that's invalid. And I totally believe that's what you got.  I'm just saying I have not seen it.
I wonder if the BIOS queried the drive, the drive responded, and the BIOS didn't recognize it. I wonder if that's why it's type 0.  HHmm...
Good luck to you,
-Shawn

--------------------------------------------
On Wed, 6/10/15, joshuaparkour@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: RE: [RuGRiD-Laptop] Gridcase 1520
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Wednesday, June 10, 2015, 8:58 PM

 Thanks for the help. I did what you
 said and replaced the hard drive. I think the graphics are
 CGA not EGA. I started the laptop and heard the hard drive
 spin up. However� gridscan did not show it as 100mb
 instead showing as 0mb GRiD type 0.� IDE Id showed it
 as being an unformatted 120mb hard disk? It is a Connor
 cp30104H hard disk... Do I need to reflash the bios or is it
 a formatting issue?
 Thanks again for your support.

 ------------------------------------
 Posted by: joshuaparkour@...
 ------------------------------------

 http://groups.yahoo.com/group/rugrid-laptop/
 ------------------------------------

 Yahoo Groups Links


 � � RuGRiD-Laptop-fullfeatured@yahoogroups.com

Yahoo! Message number: 2980
Date: 11 Jun 2015 13:59:15 -0700
From: joshuaparkour@...
Subject: RE: [RuGRiD-Laptop] Gridcase 1520

Ok, some problems here... Every time I try a dos format c: it gives me invalid drive specification error. When I run fdisk it gives me a no fixed disks present error. Is there a low level formatter you recommend? I couldn't find one.

Yahoo! Message number: 2981
Date: Fri, 12 Jun 2015 07:02:03 -0700
From: Shawnerz
Subject: RE: [RuGRiD-Laptop] Gridcase 1520

"Oh these young whipper-snappers! They just want to point and click and expect everything to just work! Back in my day...."

I'm kidding, Josh. he fact you've gotten this far shows you're not expecting everything to "just work." :)

Low level formatting is usually done from the DOS prompt via a DEBUG command.  Here is a link from Microsoft that covers back to MSDOS 3.1.
https://support.microsoft.com/en-us/kb/60089

You might get better results Googling "IDE low level format" and seeing what other people have to say.
Also, check out the Vintage Computer Forum http://www.vintage-computer.com/vcforum/forum.php I'm sure someone there can help. :)
Good luck,
-Shawn

--------------------------------------------
On Thu, 6/11/15, joshuaparkour@yahoo.com [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: RE: [RuGRiD-Laptop] Gridcase 1520
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Thursday, June 11, 2015, 4:59 PM

 Ok, some problems here... Every time
 I try a dos format c: it gives me invalid drive
 specification error. When I run fdisk it gives me a no fixed
 disks present error. Is there a low level formatter you
 recommend? I couldn't find one.

 ------------------------------------
 Posted by: joshuaparkour@...
 ------------------------------------

 http://groups.yahoo.com/group/rugrid-laptop/
 ------------------------------------

 Yahoo Groups Links


 � � RuGRiD-Laptop-fullfeatured@yahoogroups.com

Yahoo! Message number: 2982
Date: 12 Jun 2015 23:33:39 -0700
From: walton.david@...
Subject: Re: [RuGRiD-Laptop] GRiD manuals
text/plain; charset=utf-8

Hi. I am willing to scan the grid 1660 user manual and make it into a pdf file if you are willing to post it.

Yahoo! Message number: 2983
Date: 13 Jun 2015 01:44:59 -0700
From: Jeriddian@...
Subject: RE: [RuGRiD-Laptop] Gridcase 1520
text/plain; charset=utf-8

HI, Josh,
 

 I agree with Shawn. I actually was not aware that DEBUG was capable of doing that, but it makes sense to me. The last time I low level formatted a drive was thirty years. I don't remember the program I used, though it was not DEBUG. I know I don't have it now. What Shawn said also is good. The Vintage Computer guys know more about this particular stuff than we do, if googling does not work.
 

 Phil

Yahoo! Message number: 2984
Date: 13 Jun 2015 01:46:28 -0700
From: Jeriddian@...
Subject: Re: [RuGRiD-Laptop] GRiD manuals
text/plain; charset=utf-8

Hi Hercule,
 

 Thanks so much for your contribution. I'm sure we can find a way to put it in our files section. Shawn is the group administrator and can help you with that. 
 

 Phil.

Yahoo! Message number: 2985
Date: 16 Jun 2015 15:18:27 -0700
From: joshuaparkour@...
Subject: Re: Grid Donation

Are the ac power modules or 1520s still available? I think I might need a spare as I think my power supply might have bit the dust.

Yahoo! Message number: 2986
Date: 16 Jun 2015 23:20:06 -0700
From: Jeriddian@...
Subject: Re: Grid Donation
text/plain; charset=utf-8

Did you check the voltages under load off the power supply? That would give you the answer. However, I have spare power supply units. I don't mind giving you one with the battery packs if you are still interested in doing that deal.

Yahoo! Message number: 2987
Date: 21 Jun 2015 14:29:29 -0700
From: joshuaparkour@...
Subject: Re: Grid Donation

Yes I will go through with the deal. I will pay shipping. Just suggest a payment method and I will send you my address.

Yahoo! Message number: 2988
Date: 22 Jun 2015 08:00:51 -0700
From: Jeriddian@...
Subject: Re: Grid Donation
text/plain; charset=utf-8

No problem, Josh,
  
 Let me have an address by private email at jeriddian@msn.com mailto:jeriddian@msn.com, and I will send you the items. I will let you know the shipping cost and you can send me a check when you you return the refurbished battery.
  
 Phil

Yahoo! Message number: 2989
Date: 22 Jun 2015 08:55:34 -0700
From: mnoble2@...
Subject: Re: Grid Donation
text/plain; charset=utf-8

I would be interested in the Gridcase 3, or at least the monitor section.

Let me know how much.

Yahoo! Message number: 2990
Date: 22 Jun 2015 12:14:26 -0700
From: joshuaparkour@...
Subject: Re: Grid Donation

Your email doesn't appear to be valid...
Is there a different email I could send the address to?

Yahoo! Message number: 2991
Date: 22 Jun 2015 12:50:12 -0700
From: Jeriddian@...
Subject: Re: Grid Donation
text/plain; charset=utf-8

Are you sure you typed it correctly, or maybe I didn't type it correctly. It is an active email:
  
 jeriddian@msn.com mailto:jeriddian@msn.com

Yahoo! Message number: 2992
Date: 23 Jun 2015 07:08:37 -0700
From: touchetek@...
Subject: GRiDCase 3 floppy drive
text/plain; charset=utf-8

Folks-
Still looking for a working floppy drive for one the 3 if anyone ends up
with a parted out machine.
thanks!
DC
 

Yahoo! Message number: 2993
Date: Tue, 23 Jun 2015 10:29:38 -0700
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] GRiDCase 3 floppy drive

DC,
"One of the 3" what?  Gridcase 3? 
Internal or external?
-Shawn

--------------------------------------------
On Tue, 6/23/15, touchetek@... [RuGRiD-Laptop] <RuGRiD-Laptop@yahoogroups.com> wrote:

 Subject: [RuGRiD-Laptop] GRiDCase 3 floppy drive
 To: RuGRiD-Laptop@yahoogroups.com
 Date: Tuesday, June 23, 2015, 10:08 AM
          
 Folks-
 Still looking for a working floppy drive for one the 3 if
 anyone ends up
 with a parted out machine.
 thanks!
 DC
 
        
 Posted by: touchetek@...         
 http://groups.yahoo.com/group/rugrid-laptop/ 
 
 
 

Yahoo! Message number: 2994
Date: 24 Jun 2015 06:36:25 -0700
From: touchetek@...
Subject: Re: GRiDCase 3 floppy drive
text/plain; charset=utf-8

Sorry for the shorthand, I was relying on the title to clarify.
That would be an internal floppy drive for a GRiDCASE 3.
Thanks for the help!
Doug C.

Yahoo! Message number: 2995
Date: 07 Jul 2015 21:26:57 -0700
From: pullin_gs@...
Subject: Compass-II 1129 SPOC (1984) System Build
text/plain; charset=utf-8

 
I have an old Grid Compass-II 1129 that may have an interesting history??
It has a small metal plate reading "Class-III NOT FOR FLIGHT".  When it is booted, a boot-splash screen pops up stating:
*****************************
HAVE A GOOD FLIGHT

51-I CREW OF
JOE ENGLE
DICK COVEY
OX VAN HOFTEN
MIKE LOUNGE
BILL FISHER

FROM THE SPOC GROUP
****************************

Anyway, it has two "GRID-ROM Grid-OS SYSTEM" ROMS, but the other two ROM sockets are empty.
This is an older unit from 1984.
My limited knowledge on the 1129 SPOC is that it may have had two Grid-OS ROMS, and two ROMS for SPOC???
One SPOC ROM is labeled "SPoC SITEMGR"
The other SPOC ROM is labled "SPoC CGMGR"
I do not have the SPOC ROMS :-(  

I'd love to get hold of the images for the two SPOC ROMS (I have a VERY old EPROM burner that I use for Intel SDK-85 Trainer EPROM-Burns).  It would be great to restore this for others to enjoy, especially if it is the real deal.
Are the SPOC.zip files somehow compatible with this 1129 setup?  I do not think my 1129 is a DOS build?

Have a great day!

 

Yahoo! Message number: 2996
Date: Wed, 8 Jul 2015 22:26:02 +0000 (UTC)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Compass-II 1129 SPOC (1984) System Build
text/plain; charset=UTF-8

Puulin_gs:It looks like you have a rare Grid!  That is a very nice find.  I'm not an expert on which model was used with the US Space Shuttle program.  But it looks like it was used to support this shuttle mission: STS-51-I - Wikipedia, the free encyclopedia
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| STS-51-I - Wikipedia, the free encyclopediaSTS-51-I was the 20th mission of NASA's Space Shuttle program and the sixth flight of Space Shuttle Discovery. During the mission, Discovery deployed three commun... |
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Because it says "CLASS III-NOT FOR FLIGHT", I would guess it was used for training in a ground simulator.
I do not have any copies of the SPOC PROMs.
Can you please take some pictures of it an post the pictures in the Files section?  I would love to see them!Thank you very much,-Shawn
      From: "pullin_gs@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com>
 To: RuGRiD-Laptop@yahoogroups.com
 Sent: Wednesday, July 8, 2015 12:26 AM
 Subject: [RuGRiD-Laptop] Compass-II 1129 SPOC (1984) System Build

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I have an old Grid Compass-II 1129 that may have an interesting history??
It has a small metal plate reading "Class-III NOT FOR FLIGHT".  When it is booted, a boot-splash screen pops up stating:
*****************************
HAVE A GOOD FLIGHT

51-I CREW OF
JOE ENGLE
DICK COVEY
OX VAN HOFTEN
MIKE LOUNGE
BILL FISHER

FROM THE SPOC GROUP
****************************

Anyway, it has two "GRID-ROM Grid-OS SYSTEM" ROMS, but the other two ROM sockets are empty.
This is an older unit from 1984.
My limited knowledge on the 1129 SPOC is that it may have had two Grid-OS ROMS, and two ROMS for SPOC???
One SPOC ROM is labeled "SPoC SITEMGR"
The other SPOC ROM is labled "SPoC CGMGR"
I do not have the SPOC ROMS :-( 

I'd love to get hold of the images for the two SPOC ROMS (I have a VERY old EPROM burner that I use for Intel SDK-85 Trainer EPROM-Burns).  It would be great to restore this for others to enjoy, especially if it is the real deal.
Are the SPOC.zip files somehow compatible with this 1129 setup?  I do not think my 1129 is a DOS build?

Have a great day!

Yahoo! Message number: 2997
Date: 10 Jul 2015 05:52:16 -0700
From: pullin_gs@...
Subject: Need to build "GRID-OS"-Filesystem HEX-IMAGE with a DOS program.
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So far my research tells these are my options for building GRID ROMs:
1) DOS-Filesystem: I can build DOS FAT filesystem HEX dumps with a DOS-resident program.
-or-
2)GRID-OS-Filesystem:I can build GRID-OS filesystem HEX dumps using GRID-Resident GRID-OS utilities,dump it out the serial interface to my PC, then burn ROM.   

I want to da all work on the PC.  To be able to assemble GRID-OS (Not GRID-DOS! images) ROM images from the same PC that I use to burn EPROMs from.  How do you guys do this?  I suppose I could hack [insert] in the appropriate ROM--set-header and file headers among the binary GRID-OS files.  What is the format/syntax of a GRID-OS filesytem volume (ROM/Diskette)?

Thanks

P

Yahoo! Message number: 2998
Date: 12 Jul 2015 11:08:29 -0700
From: pullin_gs@...
Subject: Re: [RuGRiD-Laptop] Compass-II 1129 SPOC (1984) System Build
text/plain; charset=utf-8

Success!

Everything is already loaded up on this.  It is not missing ROMs as I had thought.
Once I figured out what some correct telemetry data for the orbital State Vector the next menu popped up which has all the goodies (such as the world map and re-entry programs).
I was expecting I needed two ROMS like was the case for an 1139 that is described on one of the vintage computer web sites.
I was wrong.  This is even earlier!
It turns out that this 1129 GRID-OS version does not use the two additional ROMs.
SPOC is either loaded up in the bubble memory or is loaded up on one of the ROMs (an EPROM actually) labeled GRID-OS Utilities.
The reason I suspect SPOC is on one of the GRID-labled ROMs is because:
1)The GRID-OS "Utilities" chip is an EPROM, not a ROM.
2)It is a very different looking chip....old purple EPROM w/metal trimmed square window.   I think the SPOC team simply re-used the "GRID-OS Utilities" window sticker for their new SPOC EPROM creation.

I'll post a few pictures.  I'm using EBAY to try to flush out some information on SPOC.  I am asking within the add for help from any of the EBAY-add readers to fill in the gaps.  I made sure it wont sell (huge price), but it will stir up interest in the Space Shuttle collector people and hopefully result in some messages coming my way.

Yahoo! Message number: 2999
Date: Mon, 13 Jul 2015 05:01:49 +0000 (UTC)
From: Shawnerz
Subject: Re: [RuGRiD-Laptop] Compass-II 1129 SPOC (1984) System Build
text/plain; charset=UTF-8

That sounds like a very special Grid you have there, pullin_gs.I can't wait to see the pictures. :)-Shawn
      From: "pullin_gs@... [RuGRiD-Laptop]" <RuGRiD-Laptop@yahoogroups.com>
 To: RuGRiD-Laptop@yahoogroups.com 
 Sent: Sunday, July 12, 2015 2:08 PM
 Subject: Re: [RuGRiD-Laptop] Compass-II 1129 SPOC (1984) System Build

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Success!

Everything is already loaded up on this.  It is not missing ROMs as I had thought.
Once I figured out what some correct telemetry data for the orbital State Vector the next menu popped up which has all the goodies (such as the world map and re-entry programs).
I was expecting I needed two ROMS like was the case for an 1139 that is described on one of the vintage computer web sites.
I was wrong.  This is even earlier!
It turns out that this 1129 GRID-OS version does not use the two additional ROMs.
SPOC is either loaded up in the bubble memory or is loaded up on one of the ROMs (an EPROM actually) labeled GRID-OS Utilities.
The reason I suspect SPOC is on one of the GRID-labled ROMs is because:
1)The GRID-OS "Utilities" chip is an EPROM, not a ROM.
2)It is a very different looking chip....old purple EPROM w/metal trimmed square window.   I think the SPOC team simply re-used the "GRID-OS Utilities" window sticker for their new SPOC EPROM creation.

I'll post a few pictures.  I'm using EBAY to try to flush out some information on SPOC.  I am asking within the add for help from any of the EBAY-add readers to fill in the gaps.  I made sure it wont sell (huge price), but it will stir up interest in the Space Shuttle collector people and hopefully result in some messages coming my way.