HP Vectra XE310 Technical Reference Manual page 32

BIOS Overview
PCI Interrupt Request Lines
PCI devices generate interrupt requests using up to eight PCI interrupt request lines. PCI interrupts can
be shared; several devices can use the same interrupt. However, optimal system performance is reached
when minimizing the sharing of interrupts.
PIRQA
PIRQB
PIRQC
Chipset
PIRQD
PCI INT
PIRQE
lines
PIRQF
PIRQG
PIRQH
32 product description
PCI1 PCI2 PCI3
INTD INTC INTB
INTA INTD INTC
INTB INTA INTD
INTC INTB INTA
Devices
Internal USB
AC97
LAN controller 1
USB
SMBus
controller 2