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Chapter 7: BIOS
7-9
Select Write Protect to prevent data from being written into the base memory area
of Block 0-512K. Select Write Back to allow CPU to write data back directly from
the buffer without writing data to the System Memory for fast CPU data processing
and operation. The options are Uncached, Write Through, Write Protect, and Write
Back.
Cache Base 512K-640K
If enabled, this feature will allow the data stored in the memory area: 512K-640K to be
cached (written) into a buffer, a storage area in the Static DROM (SDROM) or written
into L1, L2, L3 cache inside the CPU to speed up CPU operations. Select Uncached
to disable this function. Select Write Through to allow data to be cached into the
buffer and written into the system memory at the same time. Select Write Protect
to prevent data from being written into the base memory area of Block 512-640K.
Select Write Back to allow CPU to write data back directly from the buffer without
writing data to the System Memory for fast CPU data processing and operation.
The options are Uncached, Write Through, Write Protect, and Write Back.
Cache Extended Memory
If enabled, this feature will allow the data stored in the extended memory area
to be cached (written) into a buffer, a storage area in Static DROM (SDROM) or
written into L1, L2, L3 cache inside the CPU to speed up CPU operations. Select
Uncached to disable this function. Select Write Through to allow data to be cached
into the buffer and written into the system memory at the same time. Select Write
Protect to prevent data from being written into the system memory area above 1MB.
Select Write Back to allow CPU to write data back directly from the buffer without
writing data to the System Memory for fast CPU data processing and operation.
The options are Uncached, Write Through, Write Protect, and Write Back.
Discrete MTRR Allocation
If enabled, MTRRs (-Memory Type Range Registers) are confi gured as distinct, separate
units and cannot be overlapped. Set to Enabled to enhance graphic performance
when using a Linux graphic driver that requires write-combining confi guration with
4GB or more memory. The options are Enabled and Disabled.
PCI Confi guration
Access the submenu to make changes to the following settings for PCI devices.
Onboard GLAN1/Onboard GLAN2 (Gigabit- LAN) OPROM Confi gure
Enabling this option provides the capability to boot from the GLAN port specifi ed.
The options are Disabled and Enabled.
Default Primary Video Adapter
This feature allows the user to specify which video adapter to be used as the
default primary video adapter--the onboard video adapter or others. The options
are Other and Onboard Video.