2807790 Mainboard
3-8
I/O Map
I/O Port
Description
0000-000F
DMA Controller 1
0020-0021
Interrupt Controller 1
002E-002F SIO Port
0040-0043
ystem Timer
004E-004F TPM Port
0060, 0064 Keyboard Controller
0070-0073
RTC and CMOS
0080-0090
DMA Controller Page Registers
0092
Port 92h
00A0-00A1 Interrupt Controller 2
00B2-00B3 APM register
00C0-00DF DMA Controller 2
00F0-00FF Numeric Data Processor
01F0-01F7 Primary IDE Controller
02F8-02FF COM2
0376
Secondary IDE Controller
0378-037F
LPT1
03F6
Primary IDE Controller
03F8-03FF COM1
0800-085F
ACPI I/O space
0B00-0B0F SMBus I/O Space
0CF8-0CFF PCI configuration Port