Abit BE6-II, Руководство пользователя

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Introduction of the BIOS 3-41
User’s Manual
This feature is for the operating system which will record and fix the PCI configuration
status, if 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 PCI slot 1
AGP Slot
PCI slot 2 PCI slot 3 PCI slot 4 PCI slot 5 HPT 366
PIRQ_0 INT A INT B INT C INT D INT B INT C
PIRQ_1 INT B INT D INT D INT A INT A INT D
PIRQ_2 INT C INT C INT A INT B INT D INT A
PIRQ_3 INT D INT A INT B INT C INT C INT B
!
Each PCI slot has four INT#s (INT A~INT D), and the AGP slot has two INT# (INTA and
INTB).
!
USB used PIRQ_3.
Note
!
PCI slot 5 and HPT 366 IDE controller uses the same bus master control signals,
therefore; if the HPT 366 IDE controller (see section 3-5) is enabled, you can’t install
a PCI card that will occupy the bus master signals into PCI slot 5. What kind of PCI
card needs to use the bus master signal? Generally speaking, most of the PCI cards
need to use the bus master signal, but some Add-on cards such as the Voodoo series
of graphics cards and some PCI-VGA and LAN cards don't occupy the bus master
signal.
!
PCI slot 3 shares IRQ signals with the HPT366 IDE controller (Ultra ATA/66). The
driver for HPT 366 IDE controller supports IRQ sharing with other PCI devices. But
if you install a PCI card that doesn’t allow IRQ sharing with other devices into PCI
slot 3, you may encounter some problems. Furthermore, if your Operating System
doesn’t allow peripheral devices to share IRQ signals with each other--Windows NT
for example, you can’t install a PCI card into PCI slot 3.
!
PCI slot 1 shares IRQ signals with the AGP slot.
!
PCI slot 2 shares IRQ signals with the PCI slot 5
!
If you want to install two PCI cards into those PCI slots that share IRQ with one
another at the same time, you must make sure that your OS and PCI devices’ driver
support IRQ sharing.