Pci Interrupt Request Routing - MSI 845G Max Manual

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/USB/LAN" IRQ pins are typically connected
to the PCI bus INT A# ~ INT H# pins as follows:
AGP
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
USB1.1 Controller 1 INT A#
USB1.1 Controller 2 INT D#
USB1.1 Controller 3 INT C#
USB2.0 Controller
LAN Controller
AGP & PCI Slot 1 & PCI Slot 6 & USB1.1 Controller 1 shared.
PCI Slot 2 & PCI Slot 5 shared.
PCI Slot 3 & USB1.1 Controller 3 shared.
PCI Slot 4 & USB1.1 Controller 2 shared.
PCI Slot 1~6: Bus Master
Order 1 Order 2 Order 3 Order 4
INT A# INT B#
INT A# INT B#
INT B# INT C#
INT C# INT D#
INT D# INT A#
INT B# INT C#
INT A# INT B#
INT H#
INT E#
2-27
Hardware Setup
INT C# INT D#
INT D# INT A#
INT A# INT B#
INT B# INT C#
INT D# INT A#
INT C# INT D#