PORTIBM PC Portable (uses same BIOS as XT) 0024-0025 - Intel 82091AA Advanced Integrated Peripheral Range: PORTIBM PC Portable (uses same BIOS as XT) 0022h (X-Bus), PORTIBM PC Portable (uses same BIOS as XT) 0024h (X-Bus), PORTIBM PC Portable (uses same BIOS as XT) 026Eh (ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA.), or PORTIBM PC Portable (uses same BIOS as XT) 0398h (ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA.) SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0022h"82091AA",PORTIBM PC Portable (uses same BIOS as XT) 026Eh"82091AA",PORTIBM PC Portable (uses same BIOS as XT) 0398h"82091AA" 0024 ?W configuration register index 0025 RW configuration register data