Bitfields for PCI Configuration CardBus CIS Pointer: Bit(s) Description ) 2-0 address space 000 in device's device-specific configuration space 001 in memory pointed to by base address register 0 ... 110 in memory pointed to by base address register 5 111 in device's expansion ROM 27-3 offset within address space defined by bits 2-0 31-28 ROM image number (when address space is expansion ROM) SeeAlso: #00878