TYAN TIGERCUB ATX Manual page 53

field, as determined by the system board manufacturer for the installed
DRAM. This value is access speed, so a lower value means a faster
system.
MA Wait State
Selecting Slow inserts one wait state before the beginning of a memory
read. The setting of this parameter depends on the board design. Do
not change from the manufacturer's default unless you are getting
memory addressing errors.
EDO RAS# to CAS# Delay
This field applies only if EDO DRAM is installed in the system. It lets
you insert a timing delay between the CAS and RAS strobe signals,
used when DRAM is written to, read from, or refreshed. Disabled
gives faster performance; and Enabled gives more stable performance.
EDO is short for Extended Data Output. EDO DRAM is faster than
conventional DRAM if the cache controller in the system supports
pipeline burst transfer mode. Unlike conventional DRAM, which only
allows one byte to be read at a time, EDO DRAM can copy an entire
block of memory to its internal cache. While the processor is accessing
this cache, the memory can collect a new block to send.
EDO RAS# Precharge Time
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. This field applies only if EDO DRAM is installed in the system.
EDO DRAM Read Burst
Set the timing for burst-mode reads from DRAM. The lower the timing
numbers, the faster the system addresses memory. This field applies
only if EDO DRAM is installed in the system.
EDO DRAM Write Burst
Set the timing for burst-mode writes from EDO DRAM. The lower the
timing numbers, the faster the system addresses memory. This field
applies only if EDO DRAM is installed in the system.
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