🚀 go-pugleaf

David Longley wrote:
> 
> I have been working on an IBM PS/2 Model 80 (8050-071) 
> 
> 1) When I boot, I get an error 2401 *unless* I leave the SVGA
>    monitor unplugged and plug it back in after it has done the#
>    POST

Your VGA controller has failed.
> 
> 2) The battery is flat/gone - what should be on the speaker
>    assembly? Any old lithium battery?

You can get the correct lithium battery for this model from many sources. Try Dalco. 
(www.dalco.com)
> 
> 3) There seems to be a problem with the "Video Graphics Array"
>    cicuitry. I get an error 00240900 during the diagnostics
>    of the video

See above.
> 
> 4) There are two IBM Memory modules plugged into the board, each
>    is 1MB. One of the pins on bank 16  (motherboard  side)  is
>    broken, yet the POST reports 2048K OK.....

Model 80 memory modules are non standard and came in either 1, 2 or 4 MB. If your model 80 is a 
8580-Axx, you can have two 4MB modules for a total of 8MB. Other wise you are limited to 4MB. You 
can add a 16 or 32-bit MCA memory expansion card to increase the capacity to 16MB.
> 
> 5) Are the modules in 4) the sum total system memory?

see above
> 
> 6) Are MCA SCSI-2 cards easy to come by?

Fairly easy, if you know where to look. This newsgroup is a good place to start. I have an extra 
Adaptec SCSI controller for a model 80 that I'd sell for $75.
> 
> 7) Has anyone got a suitable IBM PS/2 Model 80 486 motherboard with
>    SVGA onboard they are prepared to pass on/swap??

Not easy to find as we all want one! Check out:

http://www.worldgate.com/~moebius/pbug_sale.html

or

http://www.kingston.com

for some new options for upgrades.

Hope this helps,

Jim Griffth