FWA8206 Series User’s Manual
19
Advanced Chipset Features
This Setup menu controls the configuration of the chipset.
Phoenix - AwardBIOS CMOS Setup Utility
Advanced Chipset Features
DRAM Timing Selectable
By SPD
ITEM HELP
CAS Latency Time
Auto
Menu Level
DRAM RAS# to CAS# Delay
Auto
DRAM RAS# Precharge
Auto
Precharge Delay
Auto
SLP_S4# Assertion Width
System Memory Frequency
Auto
System BIOS Cacheable
Enabled
Video BIOS Cacheable
Enabled
Memory Hole at 15M-16M
Disabled
PCI Express Root
Press Enter
On-Chip Video Memory
Press Enter
On-Chip Frame Buffer Size Memory
8MB
DVMT Version
DVMT 3.0
FIXED Memory Size
64MB
DVMT Memory Size
64MB
Boot Display
Auto
DRAM Timing Selectable
This option refers to the method by which the DRAM timing is selected. The default is
By SPD
.
CAS Latency Time
You can configure CAS latency time in HCLKs as 2 or 2.5 or 3. The system board designer should set the values in
this field, depending on the DRAM installed. Do not change the values in this field unless you change specifications
of the installed DRAM or the installed CPU.
DRAM RAS# to CAS# Delay
This option allows you to insert a delay between the RAS (Row Address Strobe) and CAS (Column Address Strobe)
signals. This delay occurs when the SDRAM is written to, read from or refreshed. Reducing the delay improves the
performance of the SDRAM.
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
The default setting for the Precharge Delay is
Auto
.
System Memory Frequency
This field sets the frequency of the DRAM memory installed. The default setting is
Auto
. The other settings are
DDR266, DDR333, DDR320
and
DDR400
.
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
On-Chip Frame Buffer Size Memory
Allow user to select the amount of system memory pre-allocated by the internal graphics device.
