Compact Board PCM-6892 Rev.B
Appendix A I/O Information A - 3
A.3 IRQ Mapping Chart
IRQ0
System Timer IRQ8
System CMOS / Real
time clock
IRQ1
Keyboard IRQ9
Microsoft ACPI –
Compliant system
IRQ2
Cascade to IRQ Controller
IRQ10
COM3
IRQ3
COM2 IRQ11
COM4
IRQ4
COM1 IRQ12
PS/2 mouse
IRQ5
Unused IRQ13
FPU
IRQ6
Floppy Disk Controller IRQ14
Primary IDE
IRQ7
Printer IRQ15
Secondary IDE
A.4 DMA Channel Assignments
DMA Channel Function
0 Available
1 Available
2 Standard Floppy Disk Controller
3 Available
4 Direct Memory Access Controller
5 Available
6 Available
7 Available