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An IRQ number is automatically assigned to PCI expansion cards.
In the PCI bus design, the BIOS automatically assigns an IRQ to a
PCI slot that contains a card requiring an IRQ. To install a PCI card,
you need to set the INT (interrupt) assignment. Since all the PCI
slots on this motherboard use an INTA #, set the jumpers on your
PCI cards to INTA.
