MSI K9SD Master, User Manual

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2-19
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:
DEVICE INT Pin IDSEL CLOCK REQ & GNT
ATi Radeon 7000M VGA_IRQJ PCI_AD20 VGA_CLK PCI_REQ/GNT J2
PCI Slot PCI_IRQJ 8/9/10/11 PCI_AD21 PCI_CLK PCI_REQ/GNT J1
PCI-X Slot PCI_IRQJ 2/3/4/5 PCIX_A_AD20 PCIX_A_CLK PCIX_A_REQ/GNT J0
Adaptec AIC-8130 SATA2_IRQJ PCIX_B_AD22 PCIX_B_CLK PCIX_B_REQ/GNT J0