User's Manual

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IRQ Mapping Table

IRQ0 System Timer IRQ8 RTC clock

IRQ1 Keyboard IRQ9 Available

IRQ2 Cascade to IRQ Controller IRQ10 COM4

IRQ3 COM2 IRQ11 COM3

IRQ4 COM1 IRQ12 PS/2 mouse

IRQ5 Audio Device IRQ13 FPU

IRQ6 FDC IRQ14 Primary IDE

IRQ7 Printer IRQ15 Secondary IDE

DMA Channel Assignments

Channel Function

0 Available

1 Available

2 Floppy disk (8-bit transfer )

3 Available

4 Cascade for DMA controller 1

5 Available

6 Available

7 Available