Brief description of mainbo ard
PCI bus interrupts - Selecting correct PCI slot
Extensive information on this section is contained in the manual "Basic information on mainboard".
To achieve optimum stability, performance an d compatibility, avoid the multiple use
of ISA IRQs or PCI IRQ Lines (IRQ sharing). Should IRQ sharing b e unavoidable,
then all involved devices and thei r drivers must support IRQ sharing.
Which ISA IRQs are assigned to the PCI IRQ Lines is normally automatically
specified by the BIO S ( see "BIOS Setup" de scription).
Monofu nct ional 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 interrup t can be inst alled in any desired slot.
Multifunctio nal expansi on cards or expa nsio n 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 the se interrupts are used is speci fied in th e documentation provided with the card.
The assignment of the PCI interrupts to the IRQ Lines is show n in the following table:
On board c ontroller
PCI INT LINE
1(A) 2(B) 3(C) 4(D) 5(E) 6(F) 7(G) 8(H)
UHCI USB 1.1
Dev 1A Fn 0
1th
----
x
---
Dev 1A Fn 1
2nd
--
x
-----
Dev 1D Fn 0
3rd
-------
x
Dev 1D Fn 1
4th
------
x
-
Dev 1A Fn 2
5th
---
x
----
EHCI USB 2.0
Dev 1A Fn 7
--
x
-----
Dev 1D Fn 7
-------
x
SATA #1
---
x
----
SATA #2
-
x
----
x
-
SMBus
---
x
----
Intel LAN
--
x
-----
A26361-D2764-Z110-1-7419, edition 1 English - 5
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