User manual

PCA-6009 User Manual 100
B.20 DMA Channel Assignments
B.21 Interrupt Assignments
Table B.20: DMA channel assignments
Channel Function
0Available
1Available
2 Floppy disk (8-bit transfer)
3Available
4 Cascade for DMA controller 1
5Available
6Available
7Available
Table B.21: 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
11 IRQ15 Secondary IDE Channel
12 IRQ3 Serial communication port 2