Pci interrupt request routing – MSI MS-6380 User Manual

Page 44

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Chapter 2

2-28

Order 1 Order 2 Order 3 Order 4

AGP

INT A# INT B#

PCI Slot 1 INT A# INT B# INT C# INT D#

PCI Slot 2 INT B# INT C# INT D# INT A#

PCI Slot 3 INT C# INT D# INT A# INT B#

PCI Slot 4 INT D# INT A# INT B# INT C#

PCI Slot 5 INT A# INT B# INT C# INT D#

The mainboard supports PCI Slot 1~5 Bus Master.

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. To install a PCI expansion card on a PCI shared slot, you
must make sure the card’s driver supports “IRQ shared” function or there is
no need to assign an IRQ to the device.

The “AGP/PCI” IRQ pins are typically connected to the PCI bus INTA#-

INTD# pins as follows:

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