DFI LanParty 865PE User Manual download pdf (Page 78)

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.

3.1.3.12 AGP Aperture Size (MB)

This field is relevant to the memory-mapped graphics data of the

AGP card installed in your system. Leave this in its default setting.

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DFI LanParty 865PE User Manual Page 78