Did you already try to search for a Award BIOS for this chipset? E.g. this one
http://www.amoretro.de/tag/ali-m1487m1489

I made some progress with your AMI-Bios and found a tool to decompress it:

AMIBIOS header (dated 10/10/94) found at 00000h
Module Source Dest Comp Uncmp Content
--------------------------------------------
1 18000h 0000h 4AF2h 679Ah Setup
0 00030h 0000h 5040h 6A60h POST
2 05070h 6F00h 66F0h 9100h Runtime
3 0F1E0h 0000h ----- 0E20h INIT
4 0B760h 8000h 300BhBad table

So maybe your password is already visible in clear text in one of these files..?

Predator99 wrote on 2021-05-18, 21:45:

Did you already try to search for a Award BIOS for this chipset? E.g. this one http://www.amoretro.de/tag/ali-m1487m1489 I made […]
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Did you already try to search for a Award BIOS for this chipset? E.g. this one
http://www.amoretro.de/tag/ali-m1487m1489
I made some progress with your AMI-Bios and found a tool to decompress it:
AMIBIOS header (dated 10/10/94) found at 00000h

Great work ! Which BIOS app did you use to decompress it ?

darry wrote on 2021-05-18, 04:10:

Maybe the SRAM on the RTC chip has gone bad in such a way that the board thinks there is a password because of some stuck bits .

Good thought ! Could either be stuck bits or just bad sram that cannot be read by BIOS so it thinks there is a password.

I've been sporadically hunting for a page that had the good list of passwords, several more than those other pages. Old page, had all the beep codes on it too and a bunch of other useful info. Can't get a sniff of it. Anyway, going on memory, I think AMI123 was another common one that hasn't got mentioned yet.

Horun wrote on 2021-05-21, 01:00:

Great work ! Which BIOS app did you use to decompress it ?

This is MyBCP from this very informative site
https://www.memotech.franken.de/NexGen/Bios.html

So my idea was that a default password is "hardwired" in the BIOS image. One should be able to modify it with
WBCP511.EXE (for core BIOS 10/10/94)

But this program seems to be lost.

If this default password is not visible in the uncompressed dumps I could search for the password check in the source and patch it out. But after this it needs to be recompressed and build into the BIOS-image. But there is no software for that so this seems to be impossible.

So I would propose to look for another BIOS of a similar board (Award). Did you look if there is a MR-BIOS?

kylix wrote on 2021-05-15, 11:21:

I am encountering this problem now with a PCCHIPS M918. I have absolutely no chance. CMOS resets, leaving it without a battery, […]
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I am encountering this problem now with a PCCHIPS M918.
I have absolutely no chance.
CMOS resets, leaving it without a battery, etc. does not help.
Entering the BIOS is not possible.
All the passwords, that I tried, don't work.
Even if I use a BIOS from another Board with the same chipset, it asks for a power on password.

Does anybody have another idea?

Could you clarify the exact password prompt you are getting. Is it: Enter ROM password, enter current password, or something else?

Predator99 wrote on 2021-05-21, 08:24:

This is MyBCP from this very informative site https://www.memotech.franken.de/NexGen/Bios.html […]
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Horun wrote on 2021-05-21, 01:00:

Great work ! Which BIOS app did you use to decompress it ?

This is MyBCP from this very informative site
https://www.memotech.franken.de/NexGen/Bios.html

So my idea was that a default password is "hardwired" in the BIOS image. One should be able to modify it with
WBCP511.EXE (for core BIOS 10/10/94)

But this program seems to be lost.

If this default password is not visible in the uncompressed dumps I could search for the password check in the source and patch it out. But after this it needs to be recompressed and build into the BIOS-image. But there is no software for that so this seems to be impossible.

So I would propose to look for another BIOS of a similar board (Award). Did you look if there is a MR-BIOS?

I experimented with roms/win486/ali1429g.amw. This is a WinBIOS, and is compressed, but not as complicated as kylix's BIOS. The ROM password check is in the uncompressed part. I was able to lock myself out of setup by replacing bytes 0x8237-0x823d with 0xFF bytes, and by changing the byte at 0xD818 from 0x74 to 0xEB. Then wipe the NVR file and boot, and it won't let you into setup. It does let me boot though. So I feel like there is actually a password sticking around in kylix's CMOS somehow. This triggers "Enter ROM password"

Need to change some PCI settings for AMI BIOS dated 10/10/94.... again no amibcp suits .... 🙁

I had the same issue, there is solution. Just close JP18.