User`s manual

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Appendices
Level Function
IRQ0 Interval timer
IRQ1 Keyboard
IRQ2 Interrupt from controller 2 (cascade)
IRQ3 COM2
IRQ4 COM1
IRQ5 Reserved
IRQ6 Reserved
IRQ7 Reserved
IRQ8 RTC
IRQ9 Reserved
IRQ10 Reserved
IRQ11 Reserved
IRQ12 PS/2 mouse
IRQ13 Math coprocessor
IRQ14 Primary IDE
IRQ15 Secondary IDE
Appendix D. DMA Map
DMA Channel Device Description
4 Direct memory access controller