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Chapter 2
Slots
Peripheral Component Interconnect: PCI
The PCI slot allows you to insert PCI expansion card. 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 nec-
essary 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 micro-
processor. The "PCI & LAN" IRQ pins are typically connected to the PCI
bus INT A# ~ INT D# pins as follows:
PCI Slot
IEEE 1394
N
Order 1
Order 2
INT B#
INT C#
INT B#
2-22
A
Order 3
INT D#
Order 4
INT A#
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