Flashing AMI Bios for Socket7 board \ VOGONS

Flashing AMI Bios for Socket7 board

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First post, by Jotschi

Posted on 2021-09-22, 13:14

Jotschi Offline

Rank Newbie

Rank: Newbie
Posts: 6
Joined: 2021-08-19, 23:39

I got a Socket 7 (M572) mainboard from the trash which is lacking a BIOS chip.

After some googling I was able to identify the board and also find the BIOS data:
* https://www.elhvb.com/webhq/models/pcchips/m572.htm
* http://web.inter.nl.net/hcc/J.Steunebrink/k6plus.htm

Unfortunately I'm not sure which BIOS chip I need. The rom/ami file is 131072 bytes large and thus does not fit onto a 27C512 eeprom.
The rom file has a lot of padding with 0 bytes. Do I need to convert the AMI file or is the 27C512 not the matching chip for this rom?

The only other clue I got is that some users reported that "H.T. M21186 C9748" was initially printed on the Chip.

Do I perhaps need a 27SF010 or 27SF020 ?

Greetings

Reply 1 of 1, by computerguy08

Posted on 2021-09-22, 13:45

computerguy08 Offline

Rank Member

Rank: Member
Posts: 481
Joined: 2019-02-02, 16:40

Either 27SF010 or 27SF020 should work, difference between them being the 010 is 128KB while the 020 is 256KB (so you'd have to write that image twice to fill the whole space).

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