Pci Interrupt Request Routing - MSI Midas 915GM User Manual

PCI Interrupt Request Routing

The IRQ, acronym of interrupt request line and pronounced I-R-Q, are
hardware lines over whic h devic es c an s end interrupt s ignals to the
microprocessor. The PCI IRQ pins are typically connected to the PCI bus pins as
follows:
DEVICE
PCI Slot 1
PCI Slot 2
VT6307 IEEE 1394
Chapter 2 - Mainboard Hardware
ICH INT Pin IDSEL
INT# B/C/D/A AD17
INT# A/B/C/D AD16
INT# F AD25
2-23
CLOCK REQ & GNT
PCICLK0 1/2
PCICLK1 0
PCICLK2 3