Intel Desktop Board D845PEBT2 Product Guide
68
Chipset Configuration Submenu
Maintenance Main Advanced Security Power Boot Exit
Chipset Configuration
The menu shown in Table 22 is used to configure advanced chipset features.
Table 22. Chipset Configuration Submenu
Feature Options Description
ISA Enable Bit
• Enabled (default)
• Disabled
Some older expansion devices require this to be
enabled.
PCI Latency Timer
• 32 (default)
• 64
• 96
• 128
• 160
• 192
• 224
• 248
Set PCI latency time.
Extended Configuration
• Default (default)
• User Defined
Chooses the default or user defined settings for
the extended configuration options.
SDRAM Frequency
• Auto (default)
• 200 MHz
• 266 MHz
• 333 MHz
Allows override of detected memory frequency
value.
SDRAM Timing Control
• Auto (default)
• Manual – Aggressive
• Manual – User Defined
Auto allows timings to be programmed according
to the memory detected.
Manual – Aggressive selects the most aggressive
user defined timings.
Manual – User Defined allows manual override of
detected SDRAM settings.
SDRAM RAS Act. To Pre. • 8
• 7
• 6
• 5
• Auto (default)
Selects length of time from read to pre-change.
SDRAM CAS# Latency • 2.5
• 2
• Auto (default)
Selects the number of clock cycles required to
address a column in memory.
SDRAM RAS# to CAS#
delay
• 4
• 3
• 2
• Auto (default)
Selects the number of clock cycles between
addressing a row and addressing a column.
SDRAM RAS# Precharge • 4
• 3
• 2
• Auto (default)
Selects the length of time required before
accessing a new row.