9.4.2 PCI Configuration Submenu
Feature
Options
Description
Plug & Play O/S
No
Yes
Specifies if manual configuration is desired.
Set to
NO
for operating systems that do not meet the Plug and Play
specification. In this case the BIOS configures all devices in the
system.
Select
YES
to let the operating system configure PnP devices that
are not required for booting.
PCI Latency Timer
32,
64
, 96, ... 248
This option allows you to adjust the latency timer of all devices on
the PCI bus.
Allocate IRQ to PCI VGA
Yes
No
Allow or restrict the BIOS from giving the VGA controller an IRQ
resource.
Allocate IRQ to SMBUS HC
Yes
No
Allow or restrict the BIOS from giving the SMBus controller an IRQ
resource.
►PCI IRQ Resource
Exclusion
sub menu
Opens PCI IRQ Resource Exclusion sub menu.
►PCI Interrupt Routing
sub menu
Opens PCI Interrupt Routing sub menu.
9.4.2.1 PCI IRQ Resource Exclusion Submenu
Feature
Options
Description
IRQ xx
Available
Reserved
Allow or restrict the BIOS from giving IRQ resource to PCI/PNP
devices.
Note: Assigned IRQ resources are shaded and listed as 'Allocated'.
9.4.2.2 PCI Interrupt Routing Submenu
Feature
Options
Description
PIRQ xx (devices)
Auto,
3, 4, .., 14, 15
Select fixed IRQ for PCI interrupt line or set to AUTO to let the BIOS
and operating system route an IRQ.
Note: Only those IRQs that are free are listed.
1st Exclusive PCI IRQ
None
, [IRQs assigned
manually above]
The selected IRQ will only be assigned to the PIRQ line it has been
set to manually. PIRQs set to AUTO will not be assigned this IRQ.
2nd Exclusive PCI IRQ
None
, [IRQs assigned
manually above]
The selected IRQ will only be assigned to the PIRQ line it has been
set to manually. PIRQs set to AUTO will not be assigned this IRQ.
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