45
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
IRQ 5, 9, 10 and 11 are available for interface cards.
Appendix I
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