كما ذكر أخي هشام ... ولتفاصيل اضافية:
IRQ 0 - System timer. Reserved for the system. Cannot be changed by a user.
IRQ 1 - Keyboard. Reserved for the system. Cannot be altered even if no keyboard is present or needed.
IRQ 2 - Cascaded signals from IRQs 8-15. A device configured to use IRQ 2 will actually be using IRQ 9
IRQ 3 - COM2 (Default) and COM4 (User) serial ports
IRQ 4 - COM1 (Default) and COM3 (User) serial ports
IRQ 5 - LPT2 Parallel Port 2 or sound card
IRQ 6 - Floppy disk controller
IRQ 7 - LPT1 Parallel Port 1 or sound card (8-bit Sound Blaster and compatibles)
IRQ 8 - Real time clock
IRQ 9 - Free / Open interrupt / Available / SCSI. Any devices configured to use IRQ 2 will actually be using IRQ 9.
IRQ 10 - Free / Open interrupt / Available / SCSI
IRQ 11 - Free / Open interrupt / Available / SCSI
IRQ 12 - PS/2 connector Mouse. If no PS/2 connector mouse is used, this can be used for other peripherals
IRQ 13 - ISA / Math Co-Processor
IRQ 14 - Primary IDE. If no Primary IDE this can be changed
IRQ 15 - Secondary IDE
المصدر : https://en.wikipedia.org/wiki/Interrupt_request
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