Chapter 2
2-24
PCI Interrupt Request Routing
The IRQ, abbreviation of interrupt request line and pronounced I-R-Q,
are hardware lines over which devices can send interrupt signals to the
microprocessor. The AGP/PCI IRQ pins are typically connected to the PCI
bus INT A# ~ INT D# pins as follows:
The mainboard supports PCI Slot 1~5 Bus Master.
Order 1 Order 2 Order 3 Order 4
AGP INT A# INT B#
PCI 1 INT A# INT B# INT C# INT D#
PCI 2 INT B# INT C# INT D# INT A#
PCI 3 INT C# INT D# INT A# INT B#
PCI 4 INT D# INT A# INT B# INT C#
PCI 5 INT B# INT C# INT D# INT A#
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