Slots; Pci Slots; Pci Interrupt Request Routing - MSI MS-9245 User Manual

The motherboard provides two 64-bit PCI-X 100/133MHz slots. One is
full length and the other is half length.

PCI Slots

Two 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.

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:
Devices
PCI Slot 1
PCI Slot 2
LAN
VGA
SCSI
Primary IDE Interrupt: IRQ14 (for AMD8111)
Secondary IDE Interrupt: IRQ15 (for AMD8111)

Slots

IRQ Routing
Order 1 Order 2
INT A# INT B#
INT D# INT A#
INT A# INT B#
INT A#
INT C#
Hardware Setup
Order 3 Order 4
INT C# INT D#
INT B# INT C#
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