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SOYO 025L2 Mobo - Specs and jumper settings request

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First post, by epictronics

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Hi all,

I'm doing a new project this weekend and piling up all the bits and pieces.
I have been offered to buy a SOYO 025L2 mobo but I cant find anything about the board on Google.
Does anyone have a manual or any info at all that could be useful?
I was hoping to use a DX4-100 if possible but I have a few options if needed. DX2-66, ODPR-100, DX2-50 or Cyrix 5x86-100.
VLB CL5429, maybe SCSI and the rest is not decided yet 😀

Any help or comments appreciated !
Is this mobo any good?

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Reply 1 of 10, by computerguy08

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Here you go, typical SiS 471 ISA/VLB board, yours has a voltage regulator, so it'll probably take any 486 class CPU (even 5x86s). Of course, have a look in the manual for that.

http://www.win3x.org/uh19/motherboard/show/4669

Reply 3 of 10, by 9646gt

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If this manual was saved I’d love to have it since the link has gone dead

Reply 5 of 10, by Chkcpu

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epictronics wrote on 2025-05-26, 08:06:
9646gt wrote on 2025-05-25, 23:45:

If this manual was saved I’d love to have it since the link has gone dead

Here you go: https://theretroweb.com/motherboards/s/soyo-sy-025j-k-l

Hi epictronics,

I'm a subscriber of your YT-channel and in your last video I saw you using a troubled SY-025L2 board.
Some time ago I made an updated Rev J.1 BIOS for the Soyo 25JKL series.
You can read all about it at Re: Fixing up an broken 486 I got from a local radio.
You can also download this BIOS there.

Hope this helps with the projects for your great videos.

Cheers, Jan

CPU Identification utility
The Unofficial K6-2+ / K6-III+ page

Reply 6 of 10, by epictronics

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Chkcpu wrote on 2025-05-26, 19:25:
Hi epictronics, […]
Show full quote
epictronics wrote on 2025-05-26, 08:06:
9646gt wrote on 2025-05-25, 23:45:

If this manual was saved I’d love to have it since the link has gone dead

Here you go: https://theretroweb.com/motherboards/s/soyo-sy-025j-k-l

Hi epictronics,

I'm a subscriber of your YT-channel and in your last video I saw you using a troubled SY-025L2 board.
Some time ago I made an updated Rev J.1 BIOS for the Soyo 25JKL series.
You can read all about it at Re: Fixing up an broken 486 I got from a local radio.
You can also download this BIOS there.

Hope this helps with the projects for your great videos.

Cheers, Jan

Thanks! I'll flash the BIOS and try it out 😀

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Reply 8 of 10, by 9646gt

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epictronics wrote on 2025-05-26, 20:20:
Chkcpu wrote on 2025-05-26, 19:25:
Hi epictronics, […]
Show full quote
epictronics wrote on 2025-05-26, 08:06:

Here you go: https://theretroweb.com/motherboards/s/soyo-sy-025j-k-l

Hi epictronics,

I'm a subscriber of your YT-channel and in your last video I saw you using a troubled SY-025L2 board.
Some time ago I made an updated Rev J.1 BIOS for the Soyo 25JKL series.
You can read all about it at Re: Fixing up an broken 486 I got from a local radio.
You can also download this BIOS there.

Hope this helps with the projects for your great videos.

Cheers, Jan

Thanks! I'll flash the BIOS and try it out 😀

Do you have a link to your YouTube video? I looked for it out of curiosity but could not find it

Reply 9 of 10, by epictronics

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9646gt wrote on 2025-05-27, 15:25:
epictronics wrote on 2025-05-26, 20:20:
Chkcpu wrote on 2025-05-26, 19:25:
Hi epictronics, […]
Show full quote

Hi epictronics,

I'm a subscriber of your YT-channel and in your last video I saw you using a troubled SY-025L2 board.
Some time ago I made an updated Rev J.1 BIOS for the Soyo 25JKL series.
You can read all about it at Re: Fixing up an broken 486 I got from a local radio.
You can also download this BIOS there.

Hope this helps with the projects for your great videos.

Cheers, Jan

Thanks! I'll flash the BIOS and try it out 😀

Do you have a link to your YouTube video? I looked for it out of curiosity but could not find it

I didn't work on the SOYO board in the video. I just used it to test an interposer: https://youtu.be/Zvj7uYn_KDk?si=8CArbY6LnqfgO1OV

YouTube

Reply 10 of 10, by 9646gt

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epictronics wrote on 2025-05-27, 19:03:
9646gt wrote on 2025-05-27, 15:25:
epictronics wrote on 2025-05-26, 20:20:

Thanks! I'll flash the BIOS and try it out 😀

Do you have a link to your YouTube video? I looked for it out of curiosity but could not find it

I didn't work on the SOYO board in the video. I just used it to test an interposer: https://youtu.be/Zvj7uYn_KDk?si=8CArbY6LnqfgO1OV

Thank you! Big fan of the channel!

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