Intel S845WD1-E Product Guide - Page 58

Using the Setup Program, BIOS Setup Program Modes

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Extended Configuration Submenu To access this submenu, select Maintenance on the menu bar, then Extended Configuration. Maintenance Main Advanced Security Extended Configuration Power Boot Exit The submenu represented by Table 16 is for setting video memory cache mode. This submenu becomes available when User Defined is selected under Extended Configuration. Table 16. Extended Configuration Submenu Feature Options Description Extended Configuration • Default • User-Defined User Defined allows setting memory control and video memory cache mode. If selected here, will also display in the Advanced Menu as: "Extended Menu: Used." Video Memory Cache Mode • USWC Selects Uncacheable Speculative Write-Combining (USWC) video memory cache mode. Full 32 byte contents of the Write-Combining buffer are written to memory as required. Cache lookups are not performed. Both the video driver and the application must support Write-Combining. • UC (default) Selects UnCacheable (UC) video memory cache mode. This setting identifies the video memory range as uncacheable by the processor. Memory writes are performed in program order. Cache lookups are not performed. Well suited for applications not supporting Write-Combining. ISA Enable Bit • Disabled (default) • Enabled System Control No options SDRAM Auto-Configuration • Auto (default) Allows configuration of memory. • User Defined CAS# Latency • SDR 2.0/DDR 1.5 Corresponds to CL. • SDR 3.0/DDR 2.0 • DDR 2.5 • Auto (default) SDRAM RAS# to CAS# • 3 delay • 2 Corresponds to tRCD. • Auto (default) SDRAM RAS# Precharge • 3 Corresponds to tRP. • 2 • Auto (default) SDRAM RAS Act. To Pre. • 7 Corresponds to tRAS. • 6 • 5 • Auto (default) 58 Intel Server Board S845WD1-E (S845WD1H) Product Guide

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58
Intel Server Board S845WD1-E (S845WD1H) Product Guide
Extended Configuration Submenu
To access this submenu, select Maintenance on the menu bar, then Extended Configuration.
Maintenance
Main
Advanced
Security
Power
Boot
Exit
Extended Configuration
The submenu represented by Table 16 is for setting video memory cache mode.
This submenu
becomes available when User Defined is selected under Extended Configuration.
Table 16.
Extended Configuration Submenu
Feature
Options
Description
Extended Configuration
•
Default
•
User-Defined
User Defined allows setting memory control and video
memory cache mode.
If selected here, will also display
in the Advanced Menu as:
“Extended Menu:
Used
.”
Video Memory Cache Mode
•
USWC
•
UC (default)
Selects Uncacheable Speculative Write-Combining
(USWC) video memory cache mode.
Full 32 byte
contents of the Write-Combining buffer are written to
memory as required.
Cache lookups are not
performed.
Both the video driver and the application
must support Write-Combining.
Selects UnCacheable (UC) video memory cache mode.
This setting identifies the video memory range as
uncacheable by the processor.
Memory writes are
performed in program order.
Cache lookups are not
performed.
Well suited for applications not supporting
Write-Combining.
ISA Enable Bit
•
Disabled (default)
•
Enabled
System Control
No options
SDRAM Auto-Configuration
•
Auto (default)
•
User Defined
Allows configuration of memory.
CAS# Latency
•
SDR 2.0/DDR 1.5
•
SDR 3.0/DDR 2.0
•
DDR 2.5
•
Auto (default)
Corresponds to CL.
SDRAM RAS# to CAS#
delay
•
3
•
2
•
Auto (default)
Corresponds to tRCD.
SDRAM RAS# Precharge
•
3
•
2
•
Auto (default)
Corresponds to tRP.
SDRAM RAS Act. To Pre.
•
7
•
6
•
5
•
Auto (default)
Corresponds to tRAS.