User`s guide

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

Map

Offset Address Register

0D2 1 C000 1A40 DMA2 write request register

0D4 1 C000 1A80 DMA2 write single mask bit register

0D6 1 C000 1AC0 DMA2 write mode register

0D8 1 C000 1B00 DMA2 clear byte pointer register

0DA 1 C000 1B40 DMA2 master clear register

0DC 1 C000 1B80 DMA2 clear mask register

0DE 1 C000 1BC0 DMA2 read/write all mask register bits

0F0 1 C000 1E00 Coprocessor error register

372 1 C000 6E40 Secondary ﬂoppy disk digital output register

3F2 1 C000 7E40 Primary ﬂoppy disk digital output register

40A 1 C000 8140 Scatter-gather interrupt status register

40B 1 C000 8160 DMA1 extended mode register

410 1 C000 8200 CH0 scatter-gather command register

411 1 C000 8220 CH1 scatter-gather command register

412 1 C000 8240 CH2 scatter-gather command register

413 1 C000 8260 CH3 scatter-gather command register

415 1 C000 82A0 CH5 scatter-gather command register

416 1 C000 82C0 CH6 scatter-gather command register

417 1 C000 82E0 CH7 scatter-gather command register

418 1 C000 8300 CH0 scatter-gather status register

419 1 C000 8320 CH1 scatter-gather status register

41A 1 C000 8340 CH2 scatter-gather status register

41B 1 C000 8360 CH3 scatter-gather status register

41D 1 C000 83A0 CH5 scatter-gather status register

41E 1 C000 83C0 CH6 scatter-gather status register

41F 1 C000 83E0 CH7 scatter-gather status register

420–423 1 C000 8418 CH0 scatter-gather descriptor table pointer register

424–427 1 C000 8498 CH1 scatter-gather descriptor table pointer register

(continued on next page)

C–4 PCI Address Maps