105 AIMB-785 User Manual
Appendix B I/O Pin Assignments
B.27 Interrupt Assignments
B.28 1st MB Memory Map
Table B.28: Interrupt assignments
Priority Interrupt# Interrupt source
1 NMI Parity error detected
2 IRQ0 System timer
3 IRQ1 Keyboard
- IRQ2 Interrupt from controller 2 (cascade)
4 IRQ8 Real-time clock
5IRQ9 SCI IRQ
6 IRQ10 Available
7IRQ11COM3 ~ 6
8 IRQ12 PS/2 mouse
9 IRQ13 Numeric data processor
10 IRQ14 Available
11 IRQ15 Available
12 IRQ3 Communication port (COM2)
13 IRQ4 Communication port (COM1)
14 IRQ5 Available
15 IRQ6 Floppy
16 IRQ7 Parallel port 1 (print port)
Table B.29: 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
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