Specifications

17 January 1997 – Subject to Change
I/O Space Address Maps B–9
PCI Sparse I/O Space
0D6 85.C000.1AC0 DMA2 write mode
0D8 85.C000.1B00 DMA2 clear byte pointer
0DA 85.C000.1B40 DMA2 master clear
0DC 85.C000.1B80 DMA2 clear mask
0DE 85.C000.1BC0 DMA2 read/write all mask register bits
0F0 85.C000.1E00 Coprocessor error
372 85.C000.6E40 Secondary floppy disk digital output
3F2 85.C000.7E40 Primary floppy disk digital output
40A 85.C000.8140 Scatter/gather interrupt status
40B 85.C000.8160 DMA1 extended mode
410 85.C000.8200 CH0 scatter/gather command
411 85.C000.8220 CH1 scatter/gather command
412 85.C000.8240 CH2 scatter/gather command
413 85.C000.8260 CH3 scatter/gather command
415 85.C000.82A0 CH5 scatter/gather command
416 85.C000.82C0 CH6 scatter/gather command
417 85.C000.82E0 CH7 scatter/gather command
418 85.C000.8300 CH0 scatter/gather status
419 85.C000.8320 CH1 scatter/gather status
41A 85.C000.8340 CH2 scatter/gather status
41B 85.C000.8360 CH3 scatter/gather status
41D 85.C000.83A0 CH5 scatter/gather status
41E 85.C000.83C0 CH6 scatter/gather status
41F 85.C000.83E0 CH7 scatter/gather status
420–423 85.C000.8418 CH0 scatter/gather descriptor table pointer
424–427 85.C000.8498 CH1 scatter/gather descriptor table pointer
Table B–5 (Continued) SIO Bridge Operating Register Address Space Map
Offset Address Register