System I/O address specifications
I/O address (hex)
System function (shipping configuration)
000 - 00F
DMA controller
000 - CF7
PCI bus
010 - 01F
Motherboard resources
020 - 021
Programmable interrupt controller
022 - 03F
Motherboard resources
040 - 043
System timer
044 - 05F
Motherboard resources
060 - 060
Standard 101-/102-Key or Microsoft® Natural PS/2 Keyboard
061 - 061
System speaker
062 - 062
Microsoft ACPI-Compliant Embedded Controller
063- 063
Motherboard resources
064 - 064
Standard 101-/102-Key or Microsoft Natural PS/2 Keyboard
065 - 065
Motherboard resources
066 - 066
Microsoft ACPI-Compliant Embedded Controller
067 - 06F
Motherboard resources
070 - 071
System CMOS/real-time clock
072 - 07F
Motherboard resources
080 - 080
Motherboard resources
081 - 083
DMA controller
084 - 086
Motherboard resources
087 - 087
DMA controller
088 - 088
Motherboard resources
089 - 08B
DMA controller
08C - 08E
Motherboard resources
08F - 08F
DMA controller
090 - 09F
Motherboard resources
0A0 - 0A1
Programmable interrupt controller
0A2 - 0BF
Motherboard resources
0C0 - 0DF
DMA controller
0E0 - 0EF
Motherboard resources
0F0 - 0FF
Numeric data processor
78 Chapter 6 Specifications