4-22 Chapter 4: BIOS setup
4.4.5 PCIPnP
The PCIPnP menu items allow you to change the advanced settings for PCI/PnP
devices. The menu includes setting IRQ and DMA channel resources for either
PCI/PnP or legacy ISA devices, and setting the memory size block for legacy ISA
devices.
Take caution when changing the settings of the PCI PnP menu items. Incorrect
eld values can cause the system to malfunction.
Plug And Play O/S [No]
When set to [No], BIOS congures all the devices in the system. When set to
[Yes] and if you install a Plug and Play operating system, the operating system
congures the Plug and Play devices not required for boot. Conguration options:
[No] [Yes]
PCI Latency Timer [64]
Allows you to select the value in units of PCI clocks for the PCI device latency
timer register. Conguration options: [32] [64] [96] [128] [160] [192] [224] [248]
Allocate IRQ to PCI VGA [Yes]
When set to [Yes], BIOS assigns an IRQ to PCI VGA card if the card requests for
an IRQ. When set to [No], BIOS does not assign an IRQ to the PCI VGA card even
if requested. Conguration options: [No] [Yes]
Palette Snooping [Disabled]
When set to [Enabled], the pallete snooping feature informs the PCI devices that
an ISA graphics device is installed in the system so that the latter can function
correctly. Conguration options: [Disabled] [Enabled]
IRQ-xx [PCI Device]
When set to [PCI Device], the specic IRQ is free for use of PCI/PnP devices.
When set to [Reserved], the IRQ is reserved for legacy ISA devices.
Conguration options: [PCI Device] [Reserved]
Advanced PCI/PnP Settings
WARNING: Setting wrong values in below sections may
cause system to malfunction.
Plug And Play O/S [No]
PCI Latency Timer [64]
Allocate IRQ to PCI VGA [Yes]
Palette Snooping [Disabled]
IRQ-3 [PCI Device]
IRQ-4 [PCI Device]
IRQ-5 [PCI Device]
IRQ-7 [PCI Device]
IRQ-9 [PCI Device]
IRQ-10 [PCI Device]
IRQ-11 [PCI Device]
IRQ-14 [PCI Device]
IRQ-15 [PCI Device]
NO: Lets the BIOS
congure all the
devices in the system.
YES: Lets the
operating system
congure Plug and
Play (PnP) devices not
required for boot if
your system has a Plug
and Play operating
system.
v02.61 (C)Copyright 1985-2007, American Megatrends, Inc.
BIOS SETUP UTILITY
Advanced