Pci Interrupt Request Routing - VIA Technologies P4PA User Manual

Chapter 2

PCI Interrupt Request Routing

IRQ allows devices to send interrupt signals to the microprocessor. The PCI
IRQ pins are typically connected to the PCI bus INT A# ~ INT D# pins as
follows:
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
Order 1 Order 2
INT B# INT C#
INT C# INT D#
INT D# INT A#
INT A# INT B#
INT B# INT C#
INT C# INT D#
2-20
Order 3 Order 4
INT D# INT A#
INT A# INT B#
INT B# INT C#
INT C# INT D#
INT D# INT A#
INT A# INT B#