Protech Systems PPC-7400 Operation Manual page 75

Chapter 4 Award BIOS Setup
any changes would be if you discovered that data was being lost while
using your system.
Please be aware that if select the wrong panel type, it may cause the
abnormal display of the LCD.
DRAM TIMING BY SELECTABLE:
This allows you to select the DRAM timing.
CAS LATENCY TIME:
When synchronous DRAM is installed, the number of clock cycles of CAS
latency depends on the DRAM timing.
ACTIVE TO PRECHARGE DELAY:
This item controls the number of DRAM clocks for TRAS.
DRAM RAS# TO CAS# DELAY:
This field let's 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:
If an insufficient number of cycles is allowed for the RAS to accumulate 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.
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.
VIDEO BIOS CACHEABLE:
Select Enabled allows caching of the video BIOS, resulting in better system
performance. However, if any program writes to this memory area, a system
error may result.
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PPC-740X USER S MANUAL