Asus TX97-X User Manual - Page 45

Chipset Features Setup

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IV. BIOS SOFTWARE Chipset Features Setup This "Chipset Features Setup" option controls the configuration of the board's chipset. Control keys for this screen are the same as for the previous screen. (BIOS Features) IV. BIOS (Chipset Features) NOTE: SETUP Defaults are noted in parenthesis next to each function heading. Details of Chipset Features Setup Auto Configuration (60ns DRAM) The default setting of 60ns DRAM sets the optimal timings for items 2 through 9 for 60ns DRAM modules. If you are using 70ns DRAM modules, you must change this item to 70ns DRAM. See section III for DRAM installation information. SDRAM CAS# Latency (3T) If you use ASUS SDRAM DIMM modules, you can set this to 2T for better performance, otherwise leave on default or check with your vendor for DIMM specs. SDRAM Speculative Read (Disabled) If Enabled, the CPU will issue predict commands to access the DRAM, if a miss occurs, the CPU will cancel this command. Some operating systems under certain situations have a problem utilizing this feature so it is normally Disabled. Passive Release (Enabled) This is a mechanism that allows concurrency of ISA/EISA cycles and CPU-to-PCI cycles. When this feature is enabled, the TXC will be possible to re-arbitrate PCI bus and allow the CPU to access PCI even when the PCEB has been granted the bus. ASUS TX97-X User's Manual 45

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ASUS TX97-X User's Manual
45
IV.
BIOS SOFTWARE
(BIOS Features)
IV.
BIOS
(Chipset Features)
Chipset Features Setup
This “Chipset Features Setup” option controls the configuration of the board’s chipset.
Control keys for this screen are the same as for the previous screen.
NOTE:
SETUP Defaults are noted in parenthesis next to each function heading.
Details of Chipset Features Setup
Auto Configuration (60ns DRAM)
The default setting of
60ns DRAM
sets the optimal timings for items 2 through 9 for
60ns DRAM modules.
If you are using 70ns DRAM modules, you must change this
item to
70ns DRAM
.
See section III for DRAM installation information.
SDRAM CAS# Latency (3T)
If you use ASUS SDRAM DIMM modules, you can set this to
2T
for better perfor-
mance, otherwise leave on default or check with your vendor for DIMM specs.
SDRAM Speculative Read (Disabled)
If
Enabled
, the CPU will issue predict commands to access the DRAM, if a miss
occurs, the CPU will cancel this command.
Some operating systems under certain
situations have a problem utilizing this feature so it is normally
Disabled
.
Passive Release (Enabled)
This is a mechanism that allows concurrency of ISA/EISA cycles and CPU-to-PCI
cycles.
When this feature is enabled, the TXC will be possible to re-arbitrate PCI
bus and allow the CPU to access PCI even when the PCEB has been granted the bus.