Can anyone Identify/help me with jumper settings for this 486 board? \ VOGONS

Can anyone Identify/help me with jumper settings for this 486 board?

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First post, by 33mhz

Posted on 2016-09-05, 17:22

33mhz Offline

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So I picked up this 486 motherboard the other day for basically nothing, and looked like it was in good condition(the battery had been removed some time ago). It came without a bios chip or a cpu, so I had to supply these. Ive been testing with a 486sx25 cpu, and a Mr.Bios bios which I looted from an old dead board. When I try to power on the system nothing dramatic happens, but I'm not getting any post beeps, but the cpu does warm up and if jumper the turbo switch and attach an led to the turbo header it lights up. So the board is receiving power properly as far as I can tell The board has information printed on it for setting the cpu and cache jumpers. But not for everything else. Is it possible its not booting because of jumper settings elsewhere on the board?

I've been able to find online documentation for other ALI 1429 based boards, but not this one in particular. So If anyone can help me with this one it would be awesome.

Reply 1 of 7, by jesolo

Posted on 2016-09-05, 18:16

jesolo Offline

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Try this site: http://arvutimuuseum.ee/th99/

By referring to the layouts under the 486 motherboard section, you might be able to identify your board.

Reply 2 of 7, by TheMobRules

Posted on 2016-09-05, 18:33

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Assuming the board is not dead, my first guess would be that it needs the correct BIOS to POST, probably that MR BIOS you're using is not compatible with the chipset? In any case, I agree that identifying the board is the first step.

Googling the model number printed on the PCB "GT M 94V-0" doesn't help as it seems to be a somewhat obscure board, so for now I think you'll have to do some detective work on TH99 as suggested by jesolo to see if you can find a matching layout.

EDIT: here's an old forum post for a board with the same model number, and similar ALI chipset:

https://www.wimsbios.com/forum/what-motherboa … 1834.html#p7683

It mentions an AMIBIOS, and a BIOS ID: 41-C104-428028-00101111-101094-ali 87/9-u

This could be another starting point for your search.

Reply 3 of 7, by debs3759

Posted on 2016-09-05, 20:04

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TheMobRules wrote:
Googling the model number printed on the PCB "GT M 94V-0" doesn't help

That's not a part number. 94V-0 crops up on a lot of computer kit (I regularly see it on graphics cards). Might be some sort of standard.

See my graphics card database at www.gpuzoo.com
Constantly being worked on. Feel free to message me with any corrections or details of cards you would like me to research and add.

Reply 4 of 7, by krivulak

Posted on 2016-09-05, 20:19

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Sometimes name is printed on the very edge, on side of last ISA slot or on the back. One time I had name on sticker though so it can be hard to search for it...

Reply 5 of 7, by einr

Posted on 2016-09-05, 20:28

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debs3759 wrote:
TheMobRules wrote:
Googling the model number printed on the PCB "GT M 94V-0" doesn't help

That's not a part number. 94V-0 crops up on a lot of computer kit (I regularly see it on graphics cards). Might be some sort of standard.

Indeed, it looks like it's a standard specifying flammability of plastics:

https://en.m.wikipedia.org/wiki/UL_94

Reply 6 of 7, by techgeek

Posted on 2016-09-06, 21:39

techgeek Offline

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Hi,
If you are testing the board the way it is shown in the picture, with just one SIMM, it won't show any signs of life - for that you would need 4 SIMMs of the same size. Hope this helps!

Reply 7 of 7, by evasive

Posted on 2020-05-06, 05:43

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I think I have a match. If you manage to get this thing to boot, could you please make a screenshot or write down the bios string from the bootscreen? That way we might retrieve who made it and there's always the small possibility of a bios update being available
2VLG-A486A
(it's listed with unidentified chipset but there are enough A's in that model name to make me think it is an ALi chipset 😀 )
https://th99.bl4ckb0x.de/m/U-Z/32800.htm

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