Pci Interrupt Request Lines - HP Vectra VE4 Reference Manual

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IRQ13

Processor

IRQ14

Integrated IDE hard disk drive controller

IRQ15

Available for integrated PCI device if not used by ISA board

PCI Interrupt Request Lines

PCI devices generate interrupt requests using up to four PCI interrupt request lines (INTA#,

INTB#, INTC#, and INTD#).

When a PCI device makes an interrupt request, the system interrupt controller assigns the

interrupt request to one of the IRQ lines made available for PCI devices.

All PCI devices with interrupt transfer support will use and share INTA#. A PCI device

supporting multiple functionalities may support several INT lines (for example, the

LAN/SCSI-2 controller uses INTA# and INTB#). These devices will require more than one

system interrupt request line.

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Vectra ve 4/xx