Pci (Peripheral Component Interconnect) Slots; Pci Interrupt Request Routing - MSI MS-7042 Getting Started

MS-7042 M-ATX Mainboard
The motherboard provides one AGP slot and three 32-bit PCI bus slots.
AGP (Accelerated Graphics Port) Slot
The AGP slot allows you to insert the AGP graphics card. AGP is an
interface specification designed for the throughput demands of 3D graphics. It
introduces a 66MHz, 32-bit channel for the graphics controller to directly ac-
cess main memory. The onboard AGP slot supports up to 8X AGP card.

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.

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 1
PCI Slot 2
PCI Slot 3
2-20
Slots
Order 1 Order 2
INT A# INT B#
INT B# INT C#
INT C# INT D#
AGP Slot
PCI Slots
Order 3 Order 4
INT C# INT D#
INT D# INT A#
INT A# INT B#