Abit BX6 User Manual page 52

3-30
Note: If you specific the IRQ in this item, then you cannot specific the same IRQ to Legacy
ISA. Otherwise, it will cause the hardware conflict.
You must familiar with the PCI interrupt distribution mechanism to adjust this
setting. This feature is for the OS who will record and fix the PCI
configuration status, and you want to change it.
For the relations between the hardware layout of PIRQ (the signals from the
PIIX4 chipset), INT# (means PCI slot IRQ signals) and devices, please refer
to the table below:
Signals
PIRQ_1
PIRQ_2
PIRQ_3
PIRQ_4
l USB used PIRQ_4.
l Each PCI slot has four INT#s (INT A~INT D), and the AGP slot has two
INT# (INTA and INT B).
PCI slot 1 PCI slot 2
AGP slot
INT A INT B
INT B INT C
INT C INT D
INT D INT A
PCI slot 3 PCI slot 4
PCI slot 5
INT C INT D
INT D INT A
INT A INT B
INT B INT C
Chapter 3