User`s guide

Table C–1 (Cont.) SIO PCI-to-ISA Bridge Operating Register Address Space

Map

Offset Address Register

428–42B 1 C000 8518 CH2 scatter-gather descriptor table pointer register

42C–42F 1 C000 8598 CH3 scatter-gather descriptor table pointer register

434–437 1 C000 8698 CH5 scatter-gather descriptor table pointer register

438–43B 1 C000 8718 CH6 scatter-gather descriptor table pointer register

43C–43F 1 C000 8798 CH7 scatter-gather descriptor table pointer register

481 1 C000 9020 DMA CH2 high page register

482 1 C000 9040 DMA CH3 high page register

483 1 C000 9060 DMA CH1 high page register

487 1 C000 90E0 DMA CH0 high page register

489 1 C000 9120 DMA CH6 high page register

48A 1 C000 9140 DMA CH7 high page register

48B 1 C000 9160 DMA CH5 high page register

4D6 1 C000 9AC0 DMA2 extended mode register

C.4 PCI Conﬁguration Address Space

The PCI conﬁguration address space comprises an address range from

1 E000 0000 through 1 FFFF FFFF. The PCI conﬁguration register set

occupies this space. Table C–2 identiﬁes the PCI devices and the corresponding

PCI address bit that drives the device idsel pin.

Table C–2 Address Bits and PCI Device idsel Pins

PCI Device

PCI Address Bit Driving

idsel Pin Physical Address

Slot 2 pci_ad<16> 1 E005 0000

PCI expansion slot 0 pci_ad<17> 1 E006 0000

PCI expansion slot 1 pci_ad<18> 1 E007 0000

Saturn IO (SIO) pci_ad<19> 1 E008 0000

Slot 3 pci_ad<20> 1 E009 0000

PCI Address Maps C–5