Appendix B Address Mapping

IO Address Map

I/O address Range

Description

000-01F

DMA Controller

020-021

Interrupt Controller

040-05F

System time

060-06F

Keyboard Controller

070-07F

System CMOS/Real time Clock

080-09F

DMA Controller

0A0-0A1

Interrupt Controller

0C0-0DF

DMA Controller

0F0-0FF

Numeric data processor

1F0-1F7

Primary IDE Channel

2F8-2FF

Serial Port 2 (COM2)

378-37F

Parallel Printer Port 1 (LPT1)

3B0-3BF

Intel(R) 82815 Graphics Controller

3C0-3DF

Intel(R) 82815 Graphics Controller

3F6-3F6

Primary IDE Channel

3F7-3F7

Standard floppy disk controller

3F8-3FF

Serial Port 1 (COM1)

44

Page 44
Image 44
IBM SAGP-845EV user manual Appendix B Address Mapping, IO Address Map Address Range Description