Pci Interrupt Request Routing - MSI MS-9282 User Manual

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:
DEVICE INT Pin
ATI VGA VGA_INT
Primary IDE Interrupt : R_IDE_IRQ14
IDSEL CLOCK
PCI_AD20 VGA_CLK
Hardware Setup
REQ & GNT
PCI_REQJ1/GNT J2
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