MSI 945GZM6 User Guide - Page 15

PCI Peripheral Component Interconnect Slot, PCI Interrupt Request Routing - specifications

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PCI (Peripheral Component Interconnect) Slot The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that comply with PCI specifications. Important: When adding or removing expansion cards, make sure that you unplug the power supply first. Meanwhile, read the documentation for the expansion card to configure any necessary hardware or software settings for the expansion card, such as jumpers, switches or BIOS configuration. 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: PCI Slot1 PCI Slot2 PCI Slot3 Order1 INT B# INT C# INT D# Order2 INT C# INT D# INT A# Order3 INT D# INT A# INT B# Order4 INT A# INT B# INT C# 9

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9
PCI (Peripheral Component Interconnect) Slot
The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that
comply with PCI specifications.
Important:
When adding or removing expansion cards, make sure that you unplug the power supply
first. Meanwhile, read the documentation for the expansion card to configure any
necessary hardware or software settings for the expansion card, such as jumpers,
switches or BIOS configuration.
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:
Order1
Order2
Order3
Order4
PCI Slot1
INT B#
INT C#
INT D#
INT A#
PCI Slot2
INT C#
INT D#
INT A#
INT B#
PCI Slot3
INT D#
INT A#
INT B#
INT C#