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Chapter 4: BIOS
4-9
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 extended
memory area above 1MB. Select Write Back to allow the 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. If enabled, the user can achieve
better graphic effects when using a Linux graphic driver that requires the 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 GLAN. The options are
Disabled and Enabled.
Onboard SCSI OPROM Confi gure
Enabling this option provides the capitally to boot from SCSI HDD. The options
are Disabled and Enabled.
Default Primary Video Adapter
This item allows the user to select the Primary Video Adapter between two adapters
instead of selecting among three or more adapters. The options are Other and
Onboard Video.
PCI Parity Error Forwarding
Enable this item to forward the PCI errors occurring behind P2P bridges to the
South Bridge, so NMI can be asserted. The options are Enabled and Disabled.