Abit KG7, User Manual

Page: 60 / 104

Chapter 3
KG7-Lite/KG7/KG7-RAID
3-32
SIGNALS
PCI
Slot 1
PCI
Slot 2
PCI
Slot 3
PCI
Slot 4
PCI
Slot 5
PCI
Slot 6
PIRQ_0 Assignment
INT A INT B INT B INT D INT C INT D
PIRQ_1 Assignment INT B INT D INT A INT A INT D INT B
PIRQ_2 Assignment
INT C INT C INT D INT B INT A INT C
PIRQ_3 Assignment INT D INT A INT C INT C INT B INT A
!
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.
!
PCI-4 and USB controllers share an IRQ.
!
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
function.
!
PCI slot 5 shares IRQ signals with the HPT 370A IDE controller (supports Ultra DMA 100). The
driver for HPT 370A 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 5, you may
encounter some problems. Furthermore, if your Operating System doesn’t allow peripheral devices
to share IRQ signals with each other, such as Windows
®
NT for example, you can’t install a PCI
card into PCI slot 5. (KG7-RAID Only)
!
HPT 370A IDE controller is designed to support high-speed and high performance mass storage
devices. Thus we suggest that you don’t connect non-disk devices that use ATA/ATAPI interfaces,
such as CD-ROM to HPT 370A IDE connector (IDE3 & IDE4).
(KG7-RAID Only)