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PCI bus interrupts - Selecting correct PCI slot

PCI bus interrupts - Selecting

correct PCI slot

Extensive information on this section is contained in the "Basic information on mainboard" manual.

To achieve optimum stability, performance and compatibility, avoid the multiple use

of ISA IRQs or PCI IRQ Lines (IRQ sharing). Should IRQ sharing be unavoidable,

then all involved devices and their drivers must support IRQ sharing.

Which ISA IRQs are assigned to the PCI IRQ Lines is normally automatically speciﬁed

by the BIOS (see "BIOS Setup" description).

Monofunctional expansion cards

PCI/PCI Express expansion cards require a maximum of one interrupt, which is called the PCI

interrupt INT A. Expansion cards that do not require an interrupt can be installed in any desired slot.

Multifunctional expansion cards or expansion cards with integrated PCI-PCI bridge

These expansion cards require up to four PCI interrupts: INT A, INT B, INT C, INT D. How many and

which of these interrupts are used is speciﬁed in the documentation provided with the card.

The assignment of the PCI interrupts to the IRQ Lines is shown in the following table:

On board controller

1 (A)

PCI INT LINE

UHCI USB 1.1

Dev 1A Fn 0 1

Dev 1A Fn 1 2

Dev 1D Fn 0 3

Dev 1D Fn 1 4

Dev 1A Fn 2 5

EHCI USB 2.0

Dev 1A Fn 7

Dev 1D Fn 7

SATA #1

SATA #2

SMBus

Intel LAN

HD Audio

Broadcom LAN

Onboard

Graphik

6 - English

2 (B)

3 (C)

4 (D)

5 (E)

6 (F)

7 (G)

A26361-D2317-Z110-1-8N19, edition 2

8 (H)