vgabios halt

[zhu shi song]

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
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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