Pci Interrupt Routing Map - Intel BLKD915PGNL - LGA775 800FSB 4DDR Audio Lan SATA ATX 4PCI Technical Product Specification

Intel Desktop Board D915PGN/D915PSY Technical Product Specification
Table 17.

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: Not present on the D915PSY board.
✏
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 16 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.
62
PIRQA PIRQB
INTA
(Note)
INTD INTC
(Note)
ICH6 PIRQ Signal Name
PIRQC PIRQD PIRQE
INTD
INTC
INTA INTB
INTB INTA
PIRQF PIRQG PIRQH
INTA INTB INTC
INTB INTA INTD
INTC INTD