Instruction Manual

78 System Resources
B.3 IO Map
Hex Range Device
000-00F DMA controller 1
020-021 Programmable interrupt controller
02E-02F
04E-04F
LPC SIO (Winbond W83627 and Fintek 81216)
configuration index/data registers
040-043 System timer
060, 062, 064, 066 8742 equivalent (keyboard)
061 System speaker
070-071 System CMOS/Real time clock
080-091 DMA page register
092 Reset (Bit 0)/ Fast Gate A20 (Bit 1)
093-09F DMA page registers continued
0A0-0B1 and 0B4-0BD Interrupt controller 2, 8259 equivalent
0C0-0DF DMA controller 2, 8237A-5 equivalent
0F0
Read: PCI and Master abort. (Note 1)
Write: FERR#/ IGNNE# /Interrupt controller
2F8 – 2FF Serial Port 2
170-177 and 1F0-1F7
376 and 3F6
ATA Channel 0
378 - 37F Parallel port
3B0 – 3BB Mono/VGA mode video
3C0- 3DF VGA registers
3F8 – 3FF Serial Port 1
4D0 and 4D1 Interrupt controller
400 – 47F SB PM Base Address
500 – 57F SB GPIO
A00 – A3F SIO PME Base Address
C80-C87 Serial Port 3
C88-C8F Serial Port 4
C90-C97 Serial Port 5
C98-C9F Serial Port 6
CF9 Reset Control register (8 bit I/O)
F040-F05F Smbus Controller
Table B-3: IO Map