INT 1A - PCI BIOS v2.0c+ - READ CONFIGURATION BYTE (32-bit) AX = B188h BH = bus number BL = device/function number (bits 7-3 device, bits 2-0 function) DI = register number (0000h-00FFh) Return: as for AX=B108h Note: the meanings of BL and BH on return were exchanged between the initial drafts of the specification and final implementation SeeAlso: AX=B108h,AX=B189h,AX=B18Ah