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Introduction
Appendix I
On Board I/O Addresses & IRQ Maps
System Resource
IRQ
I/O Address
1. Timer
IRQ0
040, 043
2. Keyboard
IRQ1
060, 064
3.
Programmable INT
IRQ2
0020, 0021,
00A0, 00A1
4. COM2(B)
IRQ3
2F8, 2FF
5. COM1(A)
IRQ4
3F8, 3FF
6. Floppy
IRQ6
3F0, 3F7
7. LPT1
IRQ7
378, 37F
8. Real Time Clock
IRQ8
070, 071
9. PS/2 Mouse
IRQ12
060, 064
10.Math coprocessor
IRQ13
0F0, 0FF
11.IDE 1
IRQ14
1F0, 1F7
12.IDE 2
IRQ15
170, 177
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IRQ 5, 9, 10 and 11 are available for interface cards.