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AX = 53B0h
BH = 03h
CX = 6941h ('iA')
Return:
CF clear if successful
AX = SMBus 16-bit code segment (real mode base address)
BX = offset of entry point into SMBus BIOS Interface
CX = SMBus 16-bit data segment (real mode base address)
SI = code segment length in bytes
DI = data segment length in bytes
CF set if error
AH = error code (01h,02h,0Ah,86h) (see #00484)
AL = sub-error code if error code is 02h (see #00485)
Desc: Connect to SMBus interface; once connected, all SMBus calls are made to the supplied entry point instead of INT 15 (with registers identical to those described here for INT 15)
Notes: Before calling the entry point, two descriptors must be initialized in the GDT or LDT. They must be consecutive and be in the order of code, then data. At the time of the call, the descriptors must be valid and have CPL=0.. The code descriptor must be ring-0 privilege. This function is only supported in INT 15 mode
See Also:
AX=53B0h/BH=01h - AX=53B0h/BH=02h - AX=53B0h/BH=04h -
Category:
Expansion Bus Bios
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Int 15h
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I
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