Pci Interrupt Routing Map - Intel BOXD915GEV - LGA775 800FSB 4DDR2 Aud+Vdo SATA ATX 4PCI Manual

Intel Desktop Board D915GEV/D915GRF Technical Product Specification
Table 15.

PCI Interrupt Routing Map

PCI Interrupt Source
IEEE-1394a controller
PCI bus connector 1
PCI bus connector 2
PCI bus connector 3
PCI bus connector 4

NOTE
In PIC mode, the ICH6 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 14 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.
58
ICH6 PIRQ Signal Name
PIRQA PIRQB PIRQC
INTA
INTD INTC INTA
INTB
PIRQD PIRQE PIRQF
INTD INTA
INTC INTB
INTB
INTA INTC
PIRQG PIRQH
INTB INTC
INTA INTD
INTD