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BIOS Configuration
PnP/PCI Configuration 53
4.7. PnP/PCI Configuration
Both the ISA and PCI buses on the Mainboard use system IRQs (In-
terrupt ReQuests) and DMAs (Direct Memory Access). You must set
up the IRQ and DMA assignments correctly through the PnP/PCI
Configuration Setup utility; otherwise, the mainboard will not work
properly.
Selecting “PnP/PCI CONFIGURATION” on the main program
screen displays this menu:
CMOS Setup Utility – Copyright (C) 1984 – 2000 Award Software
PnP/PCI Configurations
Item Help
PNP OS Installed No
Reset Configuration Data Disabled
Resources Controlled by Manual
IRQ Resources Press Enter
DMA Resources Press Enter
PCI/VGA Palette Snoop Disabled
Assign IRQ For VGA Disabled
Assign IRQ For USB Enabled
Menu Level
Select Yes if you are
using a Plug and Play
capable operating
system Select No if
you need the BIOS to
configure non-boot
devices
↑ ↑ ↓ ↓ → → ← ←
: Move Enter : Select +/-/PU/PD:Value: F10: Save ESC: Exit F1:General Help
F5:Previous Values F6:Fail-Safe Defaults F7:Optimized Defaults
Figure 4-7: PNP/PCI configuration
PnP OS Installed: Setting this option to “Yes” allows the PnP OS
(instead of BIOS) to assign the system resources such as IRQ and I/O
address to the ISA PnP device. The default setting is “No.”
Reset Configuration Data: The system BIOS supports the Plug and
Play feature so the resources assigned to each peripheral have to be
recorded to prevent them from conflicting. The location to store the
assigned resources is called ESCD (Extended System Configuration
Data) which is located in the system flash EEPROM. If this option is
set to “Disabled,” the ESCD will update automatically when the new
configuration varies from the last one. If set to “Enable,” the ESCD
will be cleared and updated and then this option will automatically be
set to “Disabled.”