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AIMB-258 User Manual 74
B.18 Interrupt Assignments
B.19 1st MB Memory Map
Table B.18: 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 Available
7 IRQ11 Available
8 IRQ12 PS/2 mouse
9 IRQ13 INT from co-processor
10 IRQ14 Primary IDE Channel
12 IRQ3 Serial communication port 2/4
13 IRQ4 Serial communication port 1/3
14 IRQ5 Serial communication port 5
15 IRQ6 Diskette controller (FDC)
16 IRQ7 Serial communication port 6
Table B.19: 1st MB Memory Map
Addr. range (Hex) Device
E0000h - FFFFFh BIOS
CC000h - DFFFFh Unused
C0000h - CBFFFh VGA BIOS
A0000h - BFFFFh Video Memory
00000h - 9FFFFh Base memory