Chapter 4: AMI BIOS
4-17
Rank Interleaving
Use this feature to select a rank memory interleaving method.
Auto
, 1-way Inter-
leave, 2-way Interleave, 4-way Interleave, and 8-way Interleave.
Demand Scrub
Demand Scrubbing is a process that allows the CPU to correct correctable memory
errors found on a memory module. When the CPU or I/O issues a demand-read
command, and the read data from memory turns out to be a correctable error, the
error is corrected and sent to the requestor (the original source). Memory is updated
as well. Select Enable to use Demand Scrubbing for ECC memory correction. The
options are
Enable
and Disable.
Device Tagging
Select Enable to support device tagging. The options are
Disable
and Enable.
A7 Mode
Select Enabled to support A7 (Addressing) Mode to improve memory performance.
The options are
Disable
and Enable.
DDDC Support
Select Enabled to enable Double-Device Data Correction (DDDC) support for the
error-correction codes to correct memory errors caused by two failed DRAM devices.
The options are
Disable
and Enable.
DDDC Wirekill (Wire-Kill)
Select Enabled for Double-Device Data Correction (DDDC) Wire-kill support which
will disable the wire connection between two DRAM devices when they fail. The
options are
Disable
and Enable.
South Bridge
This feature is used to configure Intel South Bridge settings.
USB Configuration
The following USB items will display.
•
USB Module Version
•
USB Devices
DDDC Wirekill (Wire-Kill) Threshold
Use this feature to set the DDDC Wirekill threshold. When the memory errors reach the threshold,wire-
connections between the failed DRAM modules will be disconnected. The Default setting is
2
.
Memory Mirroring
Select Enable to enable memory-mirroring support which will create a duplicate copy of the data stored in
the memory to enhance data security. The options are
Disable
and Enable.
