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6.3.
I/O Map
Hex Range
Device
000-01F Reserved
020-02D and 030-03F
Interrupt controller 1, 8259 equivalent
02E-02F
LPC SIO () 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)
080-090
LPC or PCIe
092
Reset (Bit 0)/ Fast Gate A20 (Bit 1)
091
，
93-9F
Reserved
0A0-0B1 and 0B4-0BF
Interrupt controller 2, 8259 equivalent
0B2 and 0B3
APM control and status port respectively
0C0-0DF Reserved
0E0-0EF Available
0F0
Co-processor error register
0F1-0FF N/A
100-169 N/A
170-177
Sata Controller
178-1EF N/A
1F0-1F7 Sata
Controller
1F8-2DF N/A
2E0 -2F7
Serial Port 3/4
2F8-2FF
Serial Port 2
300-36F Available
376
Sata Controller
378-37F Available
380-3AF Available
3B0-3BB and 3BF
Mono/VGA mode video
3BC-3BE
Reserved for parallel port
3C0-3DF VGA
registers
3E0-3EF Available
