QDI SynactiX 1E, Manual

Page: 45 / 65

Manual for Synactix 1E
Chapter 3
Advanced Chipset Features Setup
Figure-5 Advanced Chipset Features Menu
The following indicates the options for each item and describes their meaning.
Item Option Description
l SDRAM CAS
3
Contains the information for SDRAM initialization
Latency Time
2
procedure.
l SDRAM Cycle Time
5/7
Tras/Trc
6/8
l SDRAM RAS-to-CAS
2
Adds a delay time between the assertion of RAS
Delay
3
and CAS.
Without additional delay time.
l SDRAM RAS
2
Default setting is recommended.
Precharge Time
3
l System BIOS
Enabled
Besides conventional memory, the system BIOS
Cacheable
Disabled
area is also cacheable.
l
Video BIOS Enabled Besides conventional memory, video RAM area
Cacheable is also cacheable.
Disabled
Video RAM area is not cacheable.
l
Memory hole at Enabled
Memory hole at 15-16M is reserved for
15M-16M
expanded ISA card.
Disabled
Does not set this memory hole.
l
CPU Latency Timer Enabled
Defines the CPU Latency Timer
Disabled
l Delayed
Enabled
Default setting is recommended.
Transaction
Disabled
l Display Cache
100 MHz
Selects the Display Cache Frequency as 100MHz
Frequency
133 MHz
or 133MHz.
l System Memory
100 MHz Selects the System Memory Frequency 100MHz
133 MHz
or 133MHz, 133MHz can be set only if CPU
Auto frequency is over 133MHz.
l Close Empty Enabled Closes empty DIMM or PCI clock to reduce EMI.
DIMM/PCI Clk Disabled
Does not close empty DIMM or PCI clock.