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4-32 Chapter 4: BIOS setup
4.4.7 PCI PnP
The PCI PnP 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.
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 assigned to [PCI Device]
IRQ-4 assigned to [PCI Device]
IRQ-5 assigned to [PCI Device]
IRQ-7 assigned to [PCI Device]
IRQ-9 assigned to [PCI Device]
IRQ-10 assigned to [PCI Device]
IRQ-11 assigned to [PCI Device]
IRQ-14 assigned to [PCI Device]
IRQ-15 assigned to [PCI Device]
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 palette 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]
Take caution when changing the settings of the PCI PnP menu items.
Incorrect eld values can cause the system to malfunction.
NO: Lets the BIOS
congue 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.