CHAPTER 3
AWARD
®
BIOS SETUP
3-13
SDRAM CAS latency Time
When synchronous DRAM is installed, the number of clock cycles
of CAS latency depends on the DRAM timing. The settings are: 2 and 3.
SDRAM Cycle Time Tras/Trc
Select the number of SCLKs for an access cycle. The settings are: 5/7
and 6/8.
SDRAM 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.
The settings are: 2 and 3.
SDRAM RAS Precharge Time
If an insufficient number of cycles is allowed for the RAS to accumu-
late its charge before DRAM refresh, the refresh may be incomplete and the
DRAM may fail to retain data. Fast gives faster performance; and Slow
gives more stable performance. This field applies only when synchronous
DRAM is installed in the system. The settings are: 2 and 3.
System BIOS Cacheable
Selecting Enabled allows caching of the system BIOS ROM at
F0000h-FFFFFh, resulting in better system performance. However, if any
program writes to this memory area, a system error may result. The settings
are: Enabled and Disabled.
