28 Chapter 1NOTE: IRQ settings may be changed by OSIRQ Assignment Map
Interrupt Channel Function
NMI System errors
IRQ0 System timer
IRQ1 Keyboard
IRQ2 Programmable interrupt controller
IRQ3 Reserved
IRQ4 COM1
IRQ5 Reserved
IRQ6 Floppy
IRQ7 LPT1
IRQ8 Real time clock
IRQ9 SCI
IRQ10 Audio/Mode
IRQ11 USB/VGA/Cardbus
IRQ12 PS2 pointing device
IRQ13 Numeric data processor
IRQ14 1st IDE device (hard disk)
IRQ15 2nd EIDE device (CD-ROM drive)
DMA Channel Assignment
DMA Channel Function
DRQ0 Not used
DRQ1 Not used
DRQ2 Flopp
DRQ3 Not used
DRQ4 DMA controller
DRQ5 Not used
DRQ6 Not used
DRQ7 Not used
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