I am looking for the documentation of an old Intel motherboard with the following numbers: PBA 620028-202 or AA 634662-203 or Kalex 94V-0 K658.
Can you give me a link?
Thank you for your quick reply.
you will find attached two photos of the motherboard: the first shows the entire motherboard, the second, the edge of the card where the numbers are written.
OMG! That looks like the Ninja board. This was one of the first PC mobos (if not THE first) that I was involved with at Intel (ca Q4'1993/Q1'1994, though ancillary, since I was still doing iRMX III work then). If I remember correctly, the name for this board was the Intel Classic/PCI Expandable Desktop or something like that. That's Socket 3, so 486SX, 486SX2, 486DX, 486DX2, 486DX4 or Pentium Overdrive processors. The board had the Aries (420EX) chipset (S82425EX, S82426EX components), discrete SRAM L2 cache and SIM memory.
As for documentation, I was unable to find any on the Intel site. There are a few breadcrumbs that I hit in an Internet search, but not that got me to an actual document. I will check with some of the Intel folks tomorrow and see if they have any ideas...
I have same motherboard and can show BIOS screenshots. Sorry for quality, but it is real retro - even CRT monitor
I have some problem with this motherboard, serial port (COM1 and COM2) does't recognize mouse. Maybe there some secret, like special drivers or some like this?
What kind of mouse are you trying to use? Have you tried using one of the old 3.5 or 5.25 mouse diskettes?
There is not much support that can be offered on a 30-year old product.
I have original Microsoft Serial Mouse 2.0A and this mouse work without any problem with the other my retro-computers. And let me note - with 100% same software configuratin, because I use for booting same 3,5 diskette.
I think there is hardware prblem. Maybe you can adwise me what to check on the mtherboard? Some SMD compnets, signals on the some lines or like this? I understand that it is some crazy to ask for support for so old hardware, but maybe some general recomendation regarding serial port faults?
So... i'll try to install extra IO card with serial ports. I already have ordered 8bit isa card and 16 bit isa cards for this goal. Crazy hobby for big boys