Intel 80312 I/O Companion Chip - ECEE

Intel ® 80312 I/O Companion ChipPCI Address Translation Unit5.7.32 Expansion ROM Translate Value Register - ERTVRThe Expansion ROM Translate Value Register contains the Intel ® 80312 I/O companion chipinternal bus address which the primary ATU converts the primary PCI bus access. This address isdriven on the internal bus as a result of the primary Expansion ROM address translation.Table 5-60.Expansion ROM Translate Value Register - ERTVRIOPAttributes31 28 24 20 16 12 8 4 0rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rv rv rv rv rv rv rv rv rv rv rv rvPCIAttributesrwrw rw rw rw rw rw rwrw rw rw rw rw rw rw rwrw rw rw rwrvrvrvrvrvrvrvrvrvrvrvrvIntel ® 80200 Processor Local Bus Address1278HPCI Configuration Address Offset78H - 7BHAttribute Legend:RV = ReservedPR = PreservedRS = Read/SetRW = Read/WriteRC = Read ClearRO = Read OnlyNA = Not AccessibleBit Default Description31:12 00000HExpansion ROM Translation Value - Used to convert PCI addresses to Intel ® 80312 I/O companion chipinternal bus addresses for Expansion ROM accesses. The Expansion ROM address translation valuemust be word aligned on the internal bus.11:00 000H ReservedDeveloper’s Manual 5-93