Abit SR7-8X User Manual page 72

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
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
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
PIRQ_0 Assignment
PIRQ_1 Assignment
PIRQ_2 Assignment
PIRQ_3 Assignment
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).
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.
SR7-8X
3 4 5
®
2000, you can simply specify the IRQ for the device installed on the new
PCI
Slot 1
INT A
INT B
INT C
INT D
7 10 11. Default setting is Auto. This item
PCI PCI
Slot 2 Slot 3
INT B INT B
INT D INT A
INT C INT D
INT A INT C
Note
Chapter 4
PCI PCI
Slot 4 Slot 5
INT D INT C
INT A INT D
INT B INT A
INT C INT B