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Soyo sy-025K2

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First post, by Ph@nt0m-X

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Hello guys!
I have got Soyo 025K2 motherboard for my 486 retro PC, but it has old version of BIOS (Rev. B2), I know that the last version is Rev. G2 from 09/26/94. I can't find any BIOS for this motherboard. Guys, if you have same model, could you please share your BIOS? Also, if you have 025L2, 025N2 or 025P2 models, could you upload BIOS from your MB too? Thanks!

Reply 2 of 8, by Horun

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And this link to archive.org lists 486, 586 and 686 bios and they are downloadable.
https://web.archive.org/web/19970112032308/ht … com.tw/bios.htm

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor.

Reply 3 of 8, by Ph@nt0m-X

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quicknick wrote on 2020-03-14, 21:00:

Thread where you can find all sorts of informations about this family of boards, including some BIOSes.

Thanks

Horun wrote on 2020-03-14, 22:47:

And this link to archive.org lists 486, 586 and 686 bios and they are downloadable.
https://web.archive.org/web/19970112032308/ht … com.tw/bios.htm

Thanks for link, I have searched on web.archive.org, but there is no one for my model.

Reply 4 of 8, by digistorm

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I have this mainboard with the rev G2 BIOS from 09/26/94. But I have no idea how to get an image from the BIOS. Can this be done with software or would I need special equipment (which I don't have)?

Reply 5 of 8, by Horun

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digistorm wrote on 2020-03-15, 11:20:

I have this mainboard with the rev G2 BIOS from 09/26/94. But I have no idea how to get an image from the BIOS. Can this be done with software or would I need special equipment (which I don't have)?

Yes you can use NSSI from Navrátil Software. https://www.navsoft.cz/products.htm
In it's menu there is a BIOS save feature. Be sure to run it from a bootable DOS floppy and not from Windows.

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor.

Reply 6 of 8, by digistorm

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Hi, I saved my BIOS file with the latest version of that program. I hope it is useful to you.

Attachments

  • Filename
    SOYO25K2.BIO.zip
    File size
    44.85 KiB
    Downloads
    34 downloads
    File license
    Fair use/fair dealing exception

Reply 8 of 8, by Ph@nt0m-X

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Hi all. I have got the same version of BIOS image (rev. G2 BIOS from 09/26/94) for this MB and compared both of them. And it looks like they differ. They have different bytes from 0x0000F029 to 0x0000F038 and 0x0000FFEE (I assume it's checksum). Does anybody know something about that?

Attachments

  • Filename
    BIOS.zip
    File size
    44.36 KiB
    Downloads
    39 downloads
    File license
    Fair use/fair dealing exception