101 AIMB-581 User Manual
Appendix B I/O Pin Assignments
B.23 Interrupt Assignments
B.24 1st MB Memory Map
Table B.23: Interrupt Assignments
Priority Interrupt# Interrupt source
1 NMI Parity error detected
2 IRQ0 Interval timer
3 IRQ1 Keyboard
- IRQ2 Interrupt from controller 2 (cascade)
4 IRQ8 Real-time clock
5 IRQ9 Cascaded to INT 0A (IRQ 2)
6 IRQ10 Serial communication port 4/6
7 IRQ11 Serial communication port 3/5
8 IRQ12 PS/2 mouse
9 IRQ13 INT from co-processor
10 IRQ14 Primary IDE Chan el
11 IRQ15 Secondary IDE Chan el
12 IRQ3 Serial communica on port 2
13 IRQ4 Serial communica ion port 1
14 IRQ5 Availab e
15 IRQ6 Availab
16 IRQ7 P rallel port 1 (print port)
Table B.24: 1st MB Memory Map
Addr. range (Hex) Device
E0000h - F FFF BIOS
CC000h DFFFFh Unused
C0000 - CBFFFh VGA BIOS
A0000h - BFFFFh Video Memory
00000h - 9FFFFh Base memory
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