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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)