MSI K9ND Master-A4R, User Manual

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2-21
Hardware Setup
PCI Interrupt Request Routing
The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hardware lines
over which devices can send interrupt signals to the microprocessor. The PCI IRQ
pins are typically connected to the PCI bus pins as follows:
Primary IDE Interrupt : R_IDE_IRQ14
DEVICE INT Pin IDSEL CLOCK REQ & GNT
ATI VGA VGA_INT PCI_AD20 VGA_CLK PCI_REQJ1/GNT J2