Pci Interrupt Routing Map - Intel DESKTOP BOARD D955XBK Manual

Intel Desktop Board D955XBK Technical Product Specification
Table 14.

PCI Interrupt Routing Map

PCI Interrupt Source
IEEE-1394a/b controller
PCI bus connector 1
PCI bus connector 2
PCI bus connector 3
NOTE
In PIC mode, the ICH7-R can connect each PIRQ line internally to one of the IRQ signals (3, 4, 5,
6, 7, 9, 10, 11, 12, 14, and 15). Typically, a device that does not share a PIRQ line will have a
unique interrupt. However, in certain interrupt-constrained situations, it is possible for two or
more of the PIRQ lines to be connected to the same IRQ signal. Refer to Table 13 for the
allocation of PIRQ lines to IRQ signals in APIC mode.
PCI interrupt assignments to the USB ports, Serial ATA ports, and PCI Express ports are dynamic.
52
ICH7-R PIRQ Signal Name
PIRQA PIRQB PIRQC
INTA
INTD INTC INTA
PIRQD PIRQE PIRQF
INTD INTA
INTC INTB
INTB
PIRQG PIRQH
INTB INTC
INTA INTD