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A1SAi & A1SRi Series Motherboard User's Manual
Fast String
Select Enabled to enable Fast String support for REP MOVS/STOS, which will carry
out Repeat-String Operation instructions to move a string of commands to another
location (MOVS) or to add a string of commands to an existing instruction code
(STOS). The options are Disable and Enable.
Machine Check
Select Enabled to use Intel's machine check mechanism to detect and report hard-
ware (machine) errors. The options are Disable and Enable.
Execute Disable Bit (Available if supported by the OS & the CPU)
Set to Enabled to enable the Execute Disable Bit which will allow the processor
to designate areas in the system memory where an application code can execute
and where it cannot, thus preventing a worm or a virus from flooding illegal codes
to overwhelm the processor and damage the system during an attack. The default
is Enable. (Refer to Intel and Microsoft websites for more information.)
VMX (Available when supported by the CPU)
Select Enabled to enable Intel ® Vanderpool Technology support which will allow
one platform to run multiple operating systems and applications in independent
partitions, creating multiple "virtual" systems in one physical computer. The options
are Disable and Enable.
BIST Selection (Available when supported by the CPU)
Select Enabled to set a BIST (Built-In-Self-Test) point selection to enhance system
performance. The options are Disable and Enable.
MTRR (Memory Type Range Register) Default as Uncacheable
If this feature is set to Enabled, the default setting will be set to "Uncacheable" in
the Memory-Type-Range Table to protect the data stored in the MTRR table from
being cached. The options are Disable and Enable.
Extended APIC
Select Enabled to enable Extended APIC (Advanced Programmable Interrupt Con-
trol) support to enhance power management. The options are Disable and Enable.
AES-NI
Select Enabled to use the Advanced Encryption Standard in the processor. The
options are Disable and Enable.
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