3 legacy i/o map, Legacy i/o map – ADLINK Express-CB User Manual
Page 32
Express-CB User’s Manual
Page 32
7.3 Legacy I/O Map
Address Range (hex)
Description
000-01F
DMA controller 1, 8237A-5 equivalent
020-02D and 030-03F
Interrupt controller 1, 8259 equivalent
02E-02F
LPC SIO (W83627HG-AW) configuration index/data registers
040-05F
Timer, 8254-2 equivalent
060, 062, 064, 066, 068-06F
8742 equivalent (keyboard)
061, 063, 065, 067
NMI control and status
070-07F
Real Time Clock Controller( bit 7 -NMI mask)
080-091
DMA page register
93-9F
DMA page registers continued
0A0-0B1 and 0B4-0BF
Interrupt controller 2, 8259 equivalent
0B2h
APM Control I/O Address
0B3h
APM Status I/O Address
0C0-0DF
DMA controller 2, 8237A-5 equivalent
0F0
Co-processor error register
0F1
N/A
0F2-0F3
N/A
0F4
IDE ID port
0F5-0F7
N/A
0F8
IDE Index port
0F9-0FB
N/A
0FC
IDE Data port
0FD-0FF
N/A
170-177 and 376
Secondary IDE Channel
180-181
Default AIM4 SRAM control register (may be remapped)
1F0-1F7 and 3F6
Primary IDE Controller (AT Drive)
290
SIO_PME_BASE_ADDRESS
2E8-2EF
Serial port 4
2F8-2FF
Serial port 3
370-377
Secondary Floppy Disk Controller
378- 37F
Printer Port (LPT 1)
3B0-3BF
Mono/VGA mode video
3C0-3DF
VGA registers
3E8-3EF
Serial port 2
3F0-3F7
Primary Floppy disk controller
3F8-3FF
Serial port 1
400
SMBUS IO base
4D0
Master PIC Edge/Level Trigger register
4D1
Slave PIC Edge/Level Trigger register
500
GPIO base address for SB
800
alias for ACPI I/O base address.
830
SMI Control Registers.
860
alias for ICH TCO base address
CF9
Reset Control register (8 bit I/O)
CF8-CFC
The PCI config space index/data ports
0A00-0AFF
Reserved for SIO functions base address (eg: Hardware Monitor, GPIO, etc)