Abit SR7-8X, Руководство пользователя

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Chapter 4
SR7-8X
4-24
Allocate IRQ to PCI VGA:
Two options are available: Yes or No. The default setting is Yes . Name the interrupt request (IRQ) line
assigned to the VGA on your system. Activity of the selected IRQ always awakens the system.
You can assign an IRQ for the either PCI VGA or disable it.
PIRQ_0 Use IRQ No. ~ PIRQ_3 Use IRQ No.:
Seven options are available: Auto 3 4 5 7 10 11. Default setting is Auto. This item
allows the system to automatically specify the IRQ number for the device installed on PCI slots. This
means that the system can specify the fixed IRQ number for the device installed on the PCI slots (PCI slot
1 to PCI slot 5). This is a useful function for when you want to fix the IRQ for a specific device.
For example, if you want to move your hard disk to another computer and don’t want to re-install
Windows
®
NT or Windows
®
2000, you can simply specify the IRQ for the device installed on the new
computer to fit the original computer settings.
This feature is for the operating system that 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 SiS 963chipset), INT#
(means PCI slot IRQ signals) and devices, please refer to the table below:
SIGNALS
PCI
Slot 1
PCI
Slot 2
PCI
Slot 3
PCI
Slot 4
PCI
Slot 5
PIRQ_0 Assignment INT A INT B INT B INT D INT C
PIRQ_1 Assignment INT B INT D INT A INT A INT D
PIRQ_2 Assignment INT C INT C INT D INT B INT A
PIRQ_3 Assignment
INT D INT A INT C INT C INT B
USB used INT D.
Each PCI slot has four INT#s (INT A~INT D), and the AGP slot has two INT# (INTA and INT B).
Note
PCI slot 1 shares IRQ signals with the AGP slot.
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 supports the IRQ sharing
function.