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help, intel ym430tx new bios locked amd processor

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Post Tue Jul 31, 2007 7:27 am
cp User avatar
BIOS Guru
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Post Tue Jul 31, 2007 7:27 am
cp User avatar
BIOS Guru

Posts: 1914
Location: Germany
hmm, okay, family/model/stepping. thanks apple_rom for disassembling and looking into the code :)


Post Mon Aug 06, 2007 9:01 pm
ie User avatar
BIOS Newbie

Posts: 22
cp wrote:
ie: do you have another non-Intel processor somewhere? something like a Cyrix, Rise or IDT/Centaur cpu? if so please do run a test if it boots up with one of those.

my suggestion: look for a cpuid instruction. cpuid with EAX=0 returns the vendor id in EBX-ECX-EDX. if it's not GenuineIntel (or rather 'uneGletnIeni' imho that really hurts) just stop..but that's pure guesswork :)

I found a cyrix, also locked.thanks

Post Mon Aug 06, 2007 9:10 pm
ie User avatar
BIOS Newbie

Posts: 22
Thanks a lot for Apple_Rom,
I modified the bios, it success by pass the CPU detection,
before modify, debug card show 0d, then stop at 0E,
after modify,debug card pass 0E, then 31, and so on.
Will try more and email the modified bios to Jan for archive,
thanks a lot
Last edited by ie on Sat Sep 22, 2007 8:13 am, edited 1 time in total.

Post Thu Sep 20, 2007 8:20 am
ie User avatar
BIOS Newbie

Posts: 22
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