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I/O Address Map
Hex Range
000-00F
020-021
040-043
060-060
061-061
070-071
081-08F
0A0-0A1
0C0-0DF
0F0-0FF
170-177
1F0-1F7
278-27F
2F8-2FF
378-37F
3F0-3F5
3F6-3F6
3F7-3F7
3F8-3FF
0CF8
0CFC
778-77A
ALI M1543C GPIO (General Purpose I/O) PIN Definitions
Item
GPO3
FANOFFJ
GPO22
DISS0I01
GPI2
CHKPSW
GPO2
PWRLED
Chapter 1
DMA Controller-1
Interrupt Controller-1
System Timer
Keyboard Controller 8742
System Speaker
CMOS RAM Address and Real Time Clock
DMA Controller-2
Interrupt Controller-2
DMA Controller-2
Math Co-Processor
Secondary IDE
Primary IDE
Parallel Printer Port 2
Serial Asynchronous Port 2
Parallel Printer Port 1
Floppy Disk Controller
Secondary IDE
Primary IDE
Serial Asynchronous Port 1
Configuration Address Register
Configuration Data Register
Parallel Printer Port 1
0: Turn off the fan
1: Turn on the fan
0: Disabled
1: Enabled
0: Bypass
1: Check password
0: Suspend
1: Normal
Devices
Description
9
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