Pci Interrupt Request Routing - MSI K8N Diamond Plus Series User Manual

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PCI (Peripheral Component Interconnect) Slots: PCI1/ PCI2
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.
The orange PCI slot also works as a communcation slot, which allows you to
insert the communcation card.

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:
PCI Slot 1
PCI Slot 2
E2-28
Order 1 Order 2
INT Y# INT Z#
INT Z# INT W#
PCI Slots
Order 3 Order4
INT W# INT X#
INT X# INT Y#