Pci Interrupt Routing Map - Intel BLKD945GNTL - LGA775 1066 800FSB 4DDR2 A/V Lan SATA ATX 10Pack Motherboard Technical Product Specification

Intel Desktop Board D945GNT Technical Product Specification
Table 15.

PCI Interrupt Routing Map

PCI Interrupt Source
ICH7 LAN
PCI bus connector 1
PCI bus connector 2
PCI bus connector 3
PCI bus connector 4
IEEE-1394a controller
(optional)
NOTE
In PIC mode, the ICH7 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.
54
ICH7 PIRQ Signal Name
PIRQA PIRQB PIRQC
INTD INTC INTA
INTB
INTA
PIRQD PIRQE PIRQF
INTA
INTD INTA
INTC INTB
INTB
INTA INTC
PIRQG PIRQH
INTB INTC
INTA INTD
INTD