4.4.6 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.

Take caution when changing the settings of the PCI PnP menu items. Incorrect field values can cause the system to malfunction.

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]

NO: Lets the BIOS configue all the devices in the system. YES: Lets the operating system configure Plug and Play (PnP) devices not required for boot if your system has a Plug and Play operating system.

Select Screen

Select Item

+- Change Option

F1 General Help

F10 Save and Exit

ESC Exit

Pl ug And Pl ay O/S [ No]

When set to [No], BIOS configures all the devices in the system. When set to [Yes] and if you install a Plug and Play operating system, the operating system configures the Plug and Play devices not required for boot.

Configuration options: [No] [Yes]

PCI Latency Ti mer [ 64]

Allows you to select the value in units of PCI clocks for the PCI device latency timer register. Configuration options: [32] [64] [96] [128] [160] [192] [224] [248]

All ocate I RQ 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. Configuration options: [No] [Yes]

Pal ette Snoopi ng [ Di sabl ed]

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. Configuration options: [Disabled] [Enabled]

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Chapter 4: BIOS setup