Shuttle XPC SD30, Руководство пользователя

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15
English This field is applied only when synchronous DRAM is installed in the
system.
Ø The Choice: Auto,2,3,4,5 or 6.
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-incompleted, and the
DRAM may fail to retain data. Fast gives faster performance; and Slow
gives more stable performance. This field is applied only when synchro-
nous DRAM is installed in the system.
Ø The Choice: Auto,2,3,4,5 or 6.
Precharge dealy (tRAS)
The precharge time is the number of cycles it takes for DRAM to accumu-
late its charge before refresh.
Ø The Choice: Auto or 4~15.
System BIOS Cacheable
Selecting Enabled allows caching of the system BIOS ROM at
F0000h~FFFFFh, resulting in better system performance. However, if
any program is written to this memory area, a system error may result.
Ø The Choice: Enabled or Disabled.
Video BIOS Cacheable
Selecting Enabled allows caching of the video BIOS, resulting in better
system performance. However, if any program is written to this memory
area, a system error may result.
Ø The Choice: Enabled or Disabled.
Memory Hole At 15M-16M
You can reserve this area of system memory for ISA adapter ROM. When
this area is reserved, it can't be cached. The user information of peripher
als that need to use this area of system memory usually discusses their
memory requirements.
Ø The Choice: Enabled or Disabled.
** VGA Setting **