Supero SUPER P3TDL3, User Manual

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UPER P3TDL3/P3TDLE User’s Manual
4-16
Act to Deact
This settings for this option are 6 CLKS and 5 CLKS.
Act to Read/Write
This settings for this option are 3 CLKS and 2 CLKS.
RAS Precharge Time
The precharge time is the number of cycles it takes for the RAS to
accumulate a charge before a DRAM refresh. Insufficient recharge
time may cause the DRAM to lose data. The settings are 3 CLKS (which is
more stable) and 2 CLKS. RAS stands for Row Address Strobe.
System Memory Frequency
This option allows the system memory frequency to be adjusted. The set-
tings are 100 MHz (for PC100 memory), 133 MHz (for PC133 memory) and
Auto, which allows the system memory frequency to auto select itself
RAS Cycle Time
This option defines the RAS cycle time. Settings include 10 CLKS, 9 CLKS,
8 CLKS and 7 CLKS.
Write to Deact
This settings for this option are 3 CLKS and 2 CLKS.
DC00, 16k Shadow
These options specify how the 16 KB of video ROM at each of the above
addresses is treated. When Disabled, the contents of the video ROM are
not copied to RAM. When Enabled, the contents of 16 KB of video ROM
beginning at the above address are copied (shadowed) from ROM to RAM
for faster application. When set to Cached/WP, the contents of 16 KB of
video ROM beginning at the above address are copied (shadowed) from
ROM to RAM and can be written to or read from cache memory. The
settings for this option are Disabled, Enabled and Cached/WP. (The optimal
settings are Cached/WP for C000 and C400 and Disabled for all the other
settings.