MSI 915GM-FR User Manual - Page 35

PCI Interrupt Request Routing, PCI Peripheral Component Interconnect Slots

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Page 35 highlights

Hardware Setup PCI (Peripheral Component Interconnect) Slots The PCI slots allow you to insert the expansion cards to meet your needs. W hen adding or removing expansion cards, make sure that you unplug the power supply first. Meanwhile, read the documentation for the expansion card to make any necessary hardware or software settings for the expansion card, such as jumpers, switches or BIOS configuration. PCI Slots 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 INT A# ~ INT D# pins as follows: PCI Slot 2 PCI Slot 3 Order 1 INT B# INT C# Order 2 INT C# INT D# Order 3 INT D# INT A# Order 4 INT A# INT B# 2-23

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Hardware Setup
PCI Slots
PCI Interrupt Request Routing
The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hard-
ware lines over which devices can send interrupt signals to the microprocessor. The
PCI IRQ pins are typically connected to the PCI bus INT A# ~ INT D# pins as follows:
Order 1
Order 2
Order 3
Order 4
PCI Slot 2
INT B#
INT C#
INT D#
INT A#
PCI Slot 3
INT C#
INT D#
INT A#
INT B#
PCI (Peripheral Component Interconnect) Slots
The PCI slots allow you to insert the expansion cards to meet your needs.
When adding or removing expansion cards, make sure that you unplug the power
supply first. Meanwhile, read the documentation for the expansion card to make any
necessary hardware or software settings for the expansion card, such as jumpers,
switches or BIOS configuration.