Supermicro 5025M-4, Руководство пользователя

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Chapter 7: BIOS
7-9
Cache Video BIOS Area
This setting allows you to designate a reserve area in the system memory to be
used as a Video BIOS buffer to allow the BIOS write (cache) its data into this
reserved memory area. Select " Write Protect " to enable the function and this
area will be reserved for Video BIOS ROM access only. Select "Uncached" to
disable this function and make this area available for other devices.
Cache Base 0-512K
If enabled, this feature will allow the data stored in the base memory area: block
0-512K to be cached (written) into a buffer, a storage area in the Static DRM
(SDROM) or to be written into L1, L2 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 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 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 the Static DRM (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 0-512K. 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 .