BIOS SETUP
IB804 User’s Manual
25
DRAM RAS# Precharge
This option sets the number of cycles required for the RAS to
accumulate its charge before the SDRAM refreshes. The default setting
for the Active to Precharge Delay is Auto.
Precharge Delay (tRAS)
The default setting for the Precharge Delay is Auto.
System Memory Frequency
The default setting is
Auto
.
SLP_S4# Assertion Width
The default setting is
4 to 5 Sec
.
System BIOS Cacheable
The setting of
Enabled
allows caching of the system BIOS ROM at
F000h-FFFFFh, resulting in better system performance. However, if
any program writes to this memory area, a system error may result.
Video BIOS Cacheable
The Setting
Enabled
allows caching of the video BIOS ROM at
C0000h-F7FFFh, resulting in better video performance. However, if
any program writes to this memory area, a system error may result.
Memory Hole At 15M-16M
In order to improve performance, certain space in memory can be
reserved for ISA cards. This memory must be mapped into the memory
space below 16 MB. The choices are
Enabled
and
Disabled
.
On-Chip VGA Setting
The fields under the On-Chip VGA Setting and their default settings are:
On-Chip Frame Buffer Size: 8MB
DVMT Mode: DVMT
DVMT/Fixed Memory Size: 128MB
Boot Display: CRT+LVDS
Panel Scaling: Auto
Panel Number: 1024x768 18 bit SC
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