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PCI Interrupt Request Routing
The IRQ (Interrupt ReQuest) is the mechanism for devices to request ser-
vices from the microprocessor. The "PCI & LAN" IRQ pins are typically
connected to the PCI bus INT A# ~ INT D# pins as follows:
PCI Slot 1
LAN
PCI Interrupt Request Routing
Order 1
INT B#
INT B#
Order 2
Order 3
INT C#
INT D#
2-19
Hardware Setup
Order 4
INT A#
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