INT 1A - PCI BIOS v2.0c+ - READ CONFIGURATION DWORD (32-bit) AX = B18Ah BH = bus number BL = device/function number (bits 7-3 device, bits 2-0 function) DI = register number (0000h-00FFh) Return: as for AX=B10Ah Note: the meanings of BL and BH on return were exchanged between the initial drafts of the specification and final implementation SeeAlso: AX=B10Ah,AX=B188h,AX=B189h