67 PCM-3362 User Manual

Appendix B System Assignments

* Audio DMA select 1, 3, or 5
** Parallel port DMA select 1 (LPT2) or 3 (LPT1)

B.4 Interrupt assignments

1 Available (audio)
2 Floppy disk (8-bit transfer)
3 Available (parallel port)
4 Cascade for DMA controller 1
5 Available
6 Available
7 Available

Table B.3: DMA channel assignments

Table B.4: Interrupt assignments

Interrupt# Interrupt source
IRQ 0 Interval timer
IRQ 1 Keyboard
IRQ 2 Interrupt from controller 2 (cascade)
IRQ 3 COM2
IRQ 4 COM1
IRQ 5 Reserved (COM4)
IRQ 6 FDD
IRQ 7 LPT1
IRQ 8 RTC
IRQ 9 Reserved (audio)
IRQ 10 Reserved (COM3)
IRQ 11 Reserved
IRQ 12 PS/2 mouse
IRQ 13 INT from co-processor
IRQ 14 Primary IDE
IRQ 15 Reserved