System
Interrupts |
Hardware IRQ |
System Function |
IRQ0 |
Timer Interrupt |
IRQ1 |
Standard 101/102-Key or
Microsoft Natural Keyboard |
IRQ2 |
Programmable interrupt
controller |
IRQ3 |
Compaq Presario 56K-DF |
IRQ4 |
Communications Port (COM1) |
IRQ5 |
ES1869 Plug and Play
AudioDrive |
IRQ6 |
Standard Floppy Disk Controller |
IRQ7 |
Printer Port (LPT1) |
IRQ8 |
System CMOS/real time clock |
IRQ9 |
(free) |
IRQ10 |
OPTi 82C861 PCI to USB Open Host
Controller |
IRQ10 |
IRQ Holder for PCI Steering |
IRQ11 |
IRQ Holder for PCI Steering |
IRQ11 |
IRQ Holder for PCI Steering |
IRQ11 |
NeoMagic MagicGraph 128XD |
IRQ11 |
Texas Instruments PCI-1131 CardBus
Controller |
IRQ11 |
Texas Instruments PCI-1131 CardBus
Controller |
IRQ12 |
Synaptics PS/2 TouchPad |
IRQ13 |
Numeric data processor |
IRQ14 |
Primary IDE controller (dual fifo) |
IRQ14 |
Opti Viper Max Dual PCI IDE Controller |
IRQ15 |
Secondary IDE controller (dual fifo) |
IRQ15 |
Opti Viper Max Dual PCI IDE Controller |