VIA 693/693A AT MAINBOARD
AWARD BIOS SETUP
4-8
SDRAM Cycle Length :
(default setting: 3 )
The Cycle Length in this field is used to define the CAS latency. The CAS latency is
one of the most important parameter in the memory subsystem because it will
deci8de the system performance. Basically, the default setting “3” is the suggest
parameter for this mainboard. You may also select “2” to make the system faster,
Before you can make this selection, please make sure that your SDRAM is fast
enough otherwise your PC system will be unstable.
DRAM Clock :
(default setting: AGP CLK)
When VIA693 is installed on the board, you will see "CPU CLK" and "AGP CLK"
selectable in this field. If your SDRAM modules support the specification of PC-
100, please select CPU CLK. If your SDRAM does not compatible with PC-100,
select AGP CLK.
When VIA693A is installed on the mainboard, you will be able to select between
CPU CLK and HCLK-33 (default setting: CPU CLK). Please refer to the following
for the difference:
A.
When FSB clock is 133MHz:
1.
CPU CLK: please use PC-133 DIMM module.
2.
HCLK-33: please use PC-100 DIMM module.
B.
When FSB clock is 100MHz:
1.
CPU CLK: please use PC-100 DIMM module.
2.
HCLK-33: please use PC-166 DIMM module.
Memory Hole : (
default setting: Disabled )
Some specific add-on cards may require one MB address space between 15MB and
16MB area. Please refer to the user’s manual of your add-on card carefully to see
whether you will have to enable this field or not when you are installing a add-on
card to the system..
Read Around write :
(default setting : Disabled)
DRAM optimization feature: If a memory read is addressed to a location whose
latest write is being held in a buffer before being written to memory, the read is
satisfied through the buffer contents, and the read is not sent to the DRAM
The choice: Enabled, Disabled.
Concurrent PCI / Host :
(default Setting : Disabled)
When disable, CPU bus will be occupied during the entire PCI operation period.
The choice: Enabled, Disabled.
