Contec BX710 Series, Руководство пользователя

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4. BIOS Setup
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BX710 series User’s Manual
Table 4.6. Advance Chipset Feature Selections
Description Choice
DRAM Timing Selectable
The value in this field depends on performance parameters
of the installed memory chips (DRAM). Do not change the
value from the factory setting unlees you install new
memory that has a different performance rating than the
original DRAMs.
CAS Latency Time
When synchronous DRAM is installed, the number of clock
cycles of CAS latency depends on the DRAM timing. Do
not reset this fild from the default value specified by the
system designer.
You can select CAS latency time in HCLK of 3/4/5/6 or Auto.
The system board designer should set the values in this
field, depends on the DRAM installed specifications of the
installed DRAM or the installed CPU.
DRAM RAS# to CAS# delay
This field lets you insert a timing delay between the CAS
and RAS strobe signals, used when DRAM is written to,
read from, or refreshed. Fast gives faster performance; and
Slow gives more stable performance. This field applies only
when synchronous DRAM is installed in the system.
DRAM RAS# Precharge
The precharge time is the number of cycles it takes for the
RAS to accumulate its charge before DRAM refresh. If
insufficient time is allowed, refresh may be incomplete and
the DRAM may fail to retain data.