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IRQ channels

System interrupt levels

Interrupt NameDescription
IRQ0 Timer/counter alarm
IRQ1 Keyboard buffer full
IRQ2 Cascade from INTC2
IRQ3 Serial port 2 (com2 or 4)
IRQ4 Serial port 1 (com1 or 3)
IRQ5 Parellel port 2
IRQ6 Floppy disk drive (FDD) controller
IRQ7 Parallel port 1 - line printer terminal 1 (LPT1)
IRQ8 Real-time clock
IRQ9 Cascade to INTC 1
IRQ10 Spare
IRQ11 Spare
IRQ12 Spare PS/2 mouse
IRQ13 Coprocessor
IRQ14 Primary Integrated Drive Electronics (IDE) controller
IRQ15 Secondary IDE controller
Created by: Brandon2258
Popular Computers sets

 

 



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