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ISA-486SIQ Motherboard

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First post, by Thrackerzod

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I have been trying to find information on this board, a manual in particular would be great but so far no luck. I don't even know who made it. I'm using it to build a 486 and noticed that it only has a 25 Mhz FSB with apparently no way to change it so my DX2-66 runs at 50 Mhz and a DX-33 I tried runs at 25. Which is not a huge deal I suppose, might be nice to have them running cooler actually. It has 64K of cache installed and the jumpers indicate it can take up to 256K, 8 MB of RAM, and one of those terrible barrel batteries that I removed so it wouldn't leak and ruin everything. SIS chipset and AMI BIOS dated 1991. Just ISA slots, no VLB or anything fancy. Just curious if anyone knew anything about it.

Here is the only picture of one I could find online: https://archiwum.allegro.pl/oferta/4-x-stara- … 6775835268.html

Last edited by Thrackerzod on 2021-01-27, 11:43. Edited 1 time in total.

Reply 2 of 5, by computerguy08

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I've had this board a long time ago, mine did not work unfortunately, so I got rid of it, but I still have a photo.
http://www.win3x.org/uh19/motherboard/show/809

Could you please take a better photo of yours and dump the BIOS ?

Reply 3 of 5, by Thrackerzod

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majestyk wrote on 2021-01-26, 12:08:

It´s an ASUS board: ISA-486SIQ - it´s hard to read on the picture.

Ah, SIQ, I thought it was SIO. No wonder I couldn't find it. Thanks very much!

computerguy08 wrote on 2021-01-26, 12:18:

Could you please take a better photo of yours and dump the BIOS ?

I will try and take some photos of mine some time today. Is there a DOS utility I can use to dump the BIOS?

Last edited by Thrackerzod on 2021-01-27, 11:43. Edited 1 time in total.

Reply 4 of 5, by computerguy08

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Thrackerzod wrote on 2021-01-26, 13:48:

I will try and take some photos of mine some time today. Is there a DOS utility I can use to dump the BIOS?

Give this a try: http://cd.textfiles.com/microhaus/mhblackbox3 … MORY/GETROM.ZIP

Reply 5 of 5, by Thrackerzod

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Here is the BIOS, I hope I copied it correctly. I also took a few photos.

https://imgur.com/a/WkI5sYM

Attachments

  • Filename
    ISA-486SIQ_BIOS.zip
    File size
    36.44 KiB
    Downloads
    36 downloads
    File license
    Public domain
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