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Introducing the BIOS
User’s Manual
3-29
Force Update ESCD:
Two options are available: Disabled or Enabled. The default setting is Disabled. Normally, you should
leave this field Disabled. Select Enabled to reset Extended System Configuration Data (ESCD) when you
exit Setup if you have installed a new add-on and the system reconfiguration has caused a serious conflict
that prevents the operating system from booting.
Computer Knowledge: ESCD (Extended System Configuration Data)
The ESCD contains the IRQ, DMA, I/O port, memory information of the system. This is a
specification and a feature specific to the Plug & Play BIOS.
Resources Controlled By:
When resources are controlled manually, assign each system interrupt as one of the following types,
depending on the type of device using the interrupt:
Legacy ISA devices compliant with the original PC AT bus specification require a specific interrupt (such
as IRQ4 for serial port 1). PCI PnP devices comply with the Plug and Play standard, whether designed
for the PCI or legacy ISA bus architecture.
Two options are available: Auto (ESCD) or Manual. The default setting is Auto (ESCD). The Award Plug
and Play BIOS has the capability to automatically configure all boot and Plug and Play compatible
devices. If you select Auto (ESCD), all of the interrupt request (IRQ) fields become unselectable, as the
BIOS automatically assigns them.
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IRQ Resources:
If you have trouble in assigning the interrupt resources automatically, you can select Manual to set
which IRQis assigned to which PCI Device or Reserved it. See the screen shot below.
Figure 3-8B. IRQ Resources Screen Shot