Appendix B: Interrupt Request Lines (Irq) - Lead International FPC-7500 User Manual

0000F070 - 0000F077
0000F080 - 0000F087

Appendix B: Interrupt Request Lines (IRQ)

Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
Level Function
IRQ 0 System Timer
IRQ 1 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
IRQ 3 Communications Port (COM2)
IRQ 3 Intel(R) 5 Series/3400 Series Chipset Family SMBus Control-
ler - 3B30
IRQ 4 Communications Port (COM1)
IRQ 8 System CMOS/real time clock
IRQ 9 Microsoft ACPI-Compliant System
IRQ 10 Communications Port (COM3)
IRQ 11 Communications Port (COM4)
IRQ 12 Microsoft PS/2 Mouse
IRQ 13 Numeric data processor
IRQ 16 Intel(R) HD Graphics
Intel(R) Management Engine Interface
Intel(R) 5 Series/3400 Series Chipset Family USB Enhanced
Host Controller - 3B3C
IRQ 17 Intel(R) 5 Series/3400 Series Chipset Family PCI Express
Root Port 1 - 3B42
Intel(R) 82574L Gigabit Network Connection #2
Intel(R) 82574L Gigabit Network Connection
IRQ 18 Intel(R) 5 Series/3400 Series Chipset Family PCI Express
Root Port 2 - 3B44
Intel(R) 5 Series/3400 Series Chipset Family PCI Express
Root Port 6 - 3B4C
Intel(R) 5 Series 6 Port SATA AHCI Controller
Intel(R) HD Graphics
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Appendix