User`s guide

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

Map

Offset Address Register

007 1 C000 00E0 DMA1 CH3 base and current count register

008 1 C000 0100 DMA1 status and command register

009 1 C000 0120 DMA1 write request register

00A 1 C000 0140 DMA1 write single mask bit register

00B 1 C000 0160 DMA1 write mode register

00C 1 C000 0180 DMA1 clear byte pointer register

00D 1 C000 01A0 DMA1 master clear register

00E 1 C000 01C0 DMA1 clear mask register

00F 1 C000 01E0 DMA1 read/write all mask register bits register

020 1 C000 0400 INT 1 control register

021 1 C000 0420 INT 1 mask register

040 1 C000 0800 Timer counter 1—counter 0 count register

041 1 C000 0820 Timer counter 1—counter 1 count register

042 1 C000 0840 Timer counter 1—counter 2 count register

043 1 C000 0860 Timer counter 1—command mode register

060 1 C000 0C00 Reset utility bus IRQ12 register

061 1 C000 0C20 NMI status and control register

070 1 C000 0E00 CMOS RAM address and NMI mask register

078–07B 1 C000 0F18 BIOS timer register

080 1 C000 1000 DMA page register reserved

081 1 C000 1020 DMA channel 2 page register

082 1 C000 1040 DMA channel 3 page register

083 1 C000 1060 DMA channel 1 page register

084 1 C000 1080 DMA page register reserved

085 1 C000 10A0 DMA page register reserved

086 1 C000 10C0 DMA page register reserved

087 1 C000 10E0 DMA channel 0 page register

088 1 C000 1100 DMA page register reserved

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C–2 PCI Address Maps