PCIPnP Asus prime Asus M3A78-EH

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Chapter 2: BIOS setup



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 


Take caution when changing the settings of the PCI PnP menu items. Incorrect 

field values can cause the system to malfunction.

Plug and Play 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 Timer [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]

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. Configuration options: [No] [Yes]

Palette Snooping [Disabled]

When set to [Enabled], the palete 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]

Select Screen

    Select Item

+-   Change Option

F1   General Help

F10   Save and Exit

ESC   Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.




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 



Allocate IRQ to PCI VGA   


Palette Snooping 



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 

configure all the 

devices in the 


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.