Chapter 2
2-20
2.9 Slot
PCI Slots
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, abbreviation 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 follow:
Order 1
Order 2
Order 3
Order 4
PCI Slot 1
INT A#
INT B#
INT C#
INT D#
PCI Slot 2
INT B#
INT C#
INT D#
INT A#
PCI Slot 3
INT C#
INT D#
INT A#
INT B#
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 control-
ler to directly access main memory.
AGP Slot
