Manual for GeniuX 4
SCSI
The onboard SCSI adapter AIC-7890 occupies PIRQ#C of the PCI interrupt.
LAN
The onboard LAN adapter 82558 occupies PIRQ#B of the PCI interrupt.
AGP
Normally AGP card occupies PIRQ#A of the PCI interrupt.
PCI Resource Configuration
Normally PCI card uses A6 as the IRQ line, and AGP occupies PIRQ#A of the PCI interrupt.
Based on this assumption, we recommend the PCI resource configuration listed in the table
below.
PCI Interrupt
PIRQ#A
PIRQ#B PIRQ#C
PIRQ#D
Onboard Device
LAN SCSI
AGP
AGP
USB
USB
PCI
PCI Slots
(Refer to
above chart)
PCI2, PCI4 PCI 5 PCI1
PCI 3
PCI6
Devices
Installed
1. If the add-in AGP card
can share the interrupt
with other devices, the
master device can oc-
cupy one slot, however
slave devices can be in-
stalled on both slots at the
same time, or simulta-
neously install one mas-
ter and one slave device.
2. If the add-in AGP card
can not share the inter-
rupt, only slave devices
can be installed.
1. If no USB device is
connected and the op-
tion “ Assign IRQ For
USB” in “ PNP/PCI CON-
FIGURATION” of CMOS
setup is disabled, both
master and slave de-
vices can be installed,
2. If a USB device is
connected, or the option
“ Assign IRQ For USB” in
“ PNP/PCI CONFIGURA-
TION” of CMOS setup is
enabled, only slave de-
vices can be installed.
Slave
device
only.
Slave
device
only.
chapter 2
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