Intel BOXD955XBKLKR Product Specification - Page 52
Table 14., PCI Interrupt Routing Map
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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 PIRQA PIRQB INTA INTD INTC ICH7-R PIRQ Signal Name PIRQC PIRQD PIRQE PIRQF INTA INTB INTD INTC INTA INTB PIRQG INTB INTA PIRQH INTC INTD 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
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