* zhu shi song zhushisongzhu@yahoo.com [040901 13:14]:
My MB is A6T based on vt8601 and vt82c686. When call vgabios(at 0xc000:0003), it halted. ... INSTALL REAL-MODE IDT DO THE VGA BIOS found VGA: vid=1023, did=8500 0x55 0xAA ...(16 bytes) bus/devfn = 0x100 biosint: # 0x1a, eax 0xb109 ebx 0x100 ecx 0x100 edx 0xb29f biosint: ebp 0x10fd8 esp 0xfc9 edi 0x2 esi 0x14040 biosint: ip 0x56e8 cs 0xc000 flags 0x16 0xb109: bus 1 devfn 0x0 reg 0x2 val 0x8500 biosint: # 0x58, eax 0xc000 ebx 0x100 ecx 0x8500 edx 0x3c2
^^^^^^
This looks already weird. Go check the code what happens in bios int 1a eax 0xb109 and have a look at Ralph Browns Interrupt List whether there is an int 58 at all (I doubt it) Might be some special callback between graphics and main bios, too.. VIA did this IIRC.
biosint: ebp 0x10fd8 esp 0xfc7 edi 0x2 esi 0x14040 biosint: ip 0x2329 cs 0xc000 flags 0x246 biosint: Unsupport int #0x58 biosint: # 0xcd, eax 0xc000 ebx 0x100 ecx 0x8500 edx 0x3c2 biosint: ebp 0x10fd8 esp 0xfc7 edi 0x2 esi 0x14040 biosint: ip 0x2329 cs 0xc000 flags 0x246 biosint: Unsupport int #0xcd (halted)
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