Chapter 3
3-6 PNP/PCI Configurations
This section provides IRQ and DMA setting information. By choosing the PNP/PCI
Configuration option from the CMOS Setup Utility menu (Figure 3-1), the screen
below displays the manufacturer's default values for the motherboard.
Figure 3-6 PNP/PCI Configurations
Reset Configuration Data:
Default is [
Disabled
]. Select Enabled to reset Extended System Configuration Data
(ESCD) if you have installed a new add-on and the system reconfiguration has
caused such a serious conflict that the OS cannot boot.
Resources Controlled By:
When set to Manual the system BIOS will not refer to ESCD for IRQ & DMA
information. Instead, it will refer to the items in the setup menu for assigning IRQ &
DMA. When set to Auto the system BIOS will refer to ESCD for all legacy
information. ESCD (
Extended System Configuration Data
) provides a detailed
format of the configuration data structures stored in flash memory. Each data
structure defines the resources used by a device or a card in the system. This
includes legacy and PCI/ISA PnP devices.
PCI/VGA Palette Snoop:
When set to [
Enabled
], multiple VGA devices operating on different buses can
handle data from CPU to each set of palette registers of every video device. Bit 5 of
the command register in the PCI device configuration space is the VGA Palette
Snoop bit (0 is disabled). Available options are [
Enabled
] and [
Disabled
].
FDD IRQ Can Be Free:
This function allows user to choose if the FDD IRQ can be freed up. The default
setting is [
Yes
] and this does not allow the IRQ to be free.
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