PC Chips M726 - bios chip \ VOGONS

PC Chips M726 - bios chip

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First post, by waterbeesje

Posted on 2024-05-18, 13:09

waterbeesje Offline

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Posts: 700
Joined: 2020-01-06, 20:53
Location: The Netherlands

Hi everyone

Some of you might be read my previous post about the missing bios chip. Here's another one.
I've got a PC Hips M726 motherboard which is missing all jumpers and the bios chip.
The board is on theretroweb and had bios files available.
https://theretroweb.com/motherboards/s/pcchips-m726
Looking at the 128kB unpacked size, I assume the chip must be either a 28c010 or 29c010... But which one is it? Could somebody help me on this one?

Flashing the chip is no problem by the way 😀

Stuck at 10MHz...

Reply 1 of 2, by Horun

Posted on 2024-05-18, 15:11

Horun Offline

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Joined: 2019-09-19, 02:19
Location: USA

Hmm in the trw picture it appears a ASD AE29F1008 (similar to the 741LMRT and M748 https://theretroweb.com/motherboards/s/pcchips-m741lmrt but they are ASD AE29f2008)
I have a ASD AE29F2008-12 on a 741LMRT and the TL866ii pin detect and ID passes and reads it fine as a Winbond W29C020. Think those ASD are rebranded Winbonds or exact same....
I would try a W29c010 or AT29c010...

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. Stuff: https://archive.org/details/@horun

Reply 2 of 2, by waterbeesje

Posted on 2024-05-20, 10:56

waterbeesje Offline

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Rank: Oldbie
Posts: 700
Joined: 2020-01-06, 20:53
Location: The Netherlands

Thanks! Gonna try a 29c010 then 😀

Stuck at 10MHz...

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