Intel 80312 I/O Companion Chip - ECEE

Intel ® 80312 I/O Companion ChipPeripheral Memory-Mapped RegistersTable A-2. Peripheral Memory-Mapped Register Locations (Sheet 5 of 8)Intel ® 80312I/O CompanionChipPeripheralMessaging UnitDMA ControllerRegister Description (Name)RegisterSize inBitsInternal BusAddressReservedx0000 1338Hthrough0000 134FHMU Configuration Register 32 0000 1350HQueue Base Address Register 32 0000 1354HReservedx0000 1358Hthrough0000 1359HInbound Free Head Pointer Register 32 0000 1360HInbound Free Tail Pointer Register 32 0000 1364HInbound Post Head Pointer Register 32 0000 1368HInbound Post Tail Pointer Register 32 0000 136CHOutbound Free Head Pointer Register 32 0000 1370HOutbound Free Tail Pointer Register 32 0000 1374HOutbound Post Head Pointer Register 32 0000 1378HOutbound Post Tail Pointer Register 32 0000 137CHIndex Address Register 32 0000 1380HReservedx0000 1384Hthrough0000 13FFHChannel 0 Channel Control Register 32 0000 1400HChannel 0 Channel Status Register 32 0000 1404HReservedx0000 1408Hthrough0000 140BHChannel 0 Descriptor Address Register 32 0000 140CHChannel 0 Next Descriptor Address Register 32 0000 1410HChannel 0 PCI Address Register 32 0000 1414HChannel 0 PCI Upper Address Register 32 0000 1418HChannel 0 Internal Bus Address Register 32 0000 141CHChannel 0 Byte Count Register 32 0000 1420HChannel 0 Descriptor Control Register 32 0000 1424HReservedx0000 1428Hthrough0000 143FHChannel 1 Channel Control Register 32 0000 1440HChannel 1 Channel Status Register 32 0000 1444HReservedx0000 1448Hthrough0000 144BHChannel 1 Descriptor Address Register 32 0000 144CHChannel 1 Next Descriptor Address Register 32 0000 1450HChannel 1 PCI Address Register 32 0000 1454HChannel 1 PCI Upper Address Register 32 0000 1458HChannel 1 Internal Bus Address Register 32 0000 145CHPCIConfigurationSpace RegisterNumberMust Translate PCIaddress to the Intel ® 80312 I/O companion chipMemory-Mapped AddressMust Translate PCI address to theIntel ® 80312 I/O companion chip Memory-Mapped AddressDeveloper’s Manual A-9