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Specifications
Maintenance and Service Guide 6–7
System I/O address specifications
I/O address (hex) System function (shipping configuration)
000 - 01F DMA controller
020 - 021 Program interrupt controller
024 - 025 Program interrupt controller
028 - 029 Program interrupt controller
02C - 03D Program interrupt controller
02E - 02F Motherboard resources
030 - 031 Program interrupt controller
034 - 035 Program interrupt controller
038 - 039 Program interrupt controller
03C- 03D Program interrupt controller
040 - 043 System timer
04E-04F Motherboard resources
050-053 System timer
060 Standard 101-/102-key or Microsoft natural keyboard
061 Motherboard resources
062 Microsoft ACPI-compliant embedded controller
063 Motherboard resources
064 Standard 101-/102-key or Microsoft natural keyboard
065 Motherboard resources
066 Microsoft ACPI-compliant embedded controller
067 Motherboard resources
070 Motherboard resources
071-077 System CMOS/real time clock
080 Motherboard resources
081-091 Direct memory access controller
092 Motherboard resources
093-09F Direct memory access controller
0A0-0A1 Program interrupt controller
0A4-0A5 Program interrupt controller
0A8-0A9 Program interrupt controller
0AC-0AD Program interrupt controller
0B0-0B1 Program interrupt controller
0B2-0B3 Motherboard resources
0B4- 0B5 Program interrupt controller
0B8-0B9 Program interrupt controller
0BC- 0BD Program interrupt controller
(Continued)