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4 HP BIOS
BIOS Addresses
PCI Interrupt Request Lines
PCI devices generate interrupt requests using up to four PCI interrupt
request lines (INTA#, INTB#, INTC#, and INTD#).
PCI interrupts can be shared; several devices can use the same interrupt.
However, optional system performance is reached when minimizing the
sharing of interrupts. Therefore, the interrupts of the PCI devices are routed
in the distributed manner, as shown below.
ABCD
ABCD
A
B
C
D
PCI/ISA
Bridge
Slot 3 (ARO) Slot 4
AGP
ABCD
Slot 2
ABCD
Slot 1(LAN)
AB
16-bit
SCSI
8-bit
SCSI
A
A
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