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BIOS Setup
3.1.3.7 DRAM RAS# Precharge
This field controls RAS# precharge (in local memory clocks).
3.1.3.8 Memory Frequency For
This field is used to select the memory clock speed of the DIMM.
DDR333 will run at 320MHz memory frequency when used with
800MHz FSB CPU. Under such circumstance, make sure this field
is set to Auto or DDR320.
3.1.3.9 System BIOS Cacheable
When this field is enabled, accesses to the system BIOS ROM
addressed at F0000H-FFFFFH are cached, provided that the cache
controller is enabled. The larger the range of the Cache RAM, the
higher the efficiency of the system.
3.1.3.10 Video BIOS Cacheable
As with caching the system BIOS, enabling the Video BIOS cache
will allow access to video BIOS addresssed at C0000H to
C7FFFH to be cached, if the cache controller is also enabled. The
larger the range of the Cache RAM, the faster the video perform-
ance.
3.1.3.11 Memory Hole At 15M-16M
In order to improve system performance, certain space in memory
can be reserved for ISA cards. This memory must be mapped into
the memory space below 16MB. When enabled, the CPU assumes
the 15-16MB memory range is allocated to the hidden ISA address
range instead of the actual system DRAM. When disabled, the CPU
assumes the 15-16MB address range actually contains DRAM
memory. If more than 16MB of system memory is installed, this
field must be disabled to provide contiguous system memory.
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