User`s manual

2-23
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 ICH INT Pin IDSEL CLOCK REQ & GNT
PCI Slot 1 INT# B/C/D/A AD17 PCICLK0 1/2
PCI Slot 2 INT# A/B/C/D AD16 PCICLK1 0
VT6307 IEEE 1394 INT# F AD25 PCICLK2 3