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AX = B10Ch BH = bus number BL = device/function number (bits 7-3 device, bits 2-0 function) DI = register number (multiple of 2 less than 0100h) CX = word to write
Return:
CF clear if successful CF set on error AH = status (00h,87h) (see #00729) EAX, EBX, ECX, and EDX may be modified all other flags (except IF) may be modified
Notes: This function may require up to 1024 byte of stack; it will not enable interrupts if they were disabled before making the call. The meanings of BL and BH on entry were exchanged between the initial drafts of the specification and final implementation
See Also: AX=B109h - AX=B10Bh - AX=B10Dh - AX=B18Ch -
Category: Expansion Bus Bios - Int 1Ah - P
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