Supermicro X7DWT User Manual page 63

Chapter 4: BIOS
Route Port 80h Cycles to
This feature allows the user to decide which bus to send debug information to. The
options are Disabled, PCI and LPC.
High Precision Event Time
Select Yes to activate the High Precision Event Timer (HPET), which is capable of
producing periodic interrupts at a much higher frequency than a Real-time Clock
(RTC) can in synchronizing multimedia streams, providing smooth playback and
reducing the dependency on other timestamp calculation devices, such as an x86
RDTSC Instruction embedded in a CPU. The High Precision Event Timer is used
to replace the 8254 Programmable Interval Timer. The options for this feature are
Yes and No.
USB Function
Select Enabled to enable the function of USB devices specifi ed. The settings are
Enabled and Disabled.
Legacy USB Support
This setting allows you to enable support for Legacy USB devices. The settings
are Enabled and Disabled.
Advanced Processor Options
Access the submenu to make changes to the following settings.
CPU Speed
This is a display that indicates the speed of the installed processor.
Frequency Ratio Available when supported by the CPU
( )
The feature allows the user to set the internal frequency multiplier for the CPU.
The options are: Default, x12, x13, x14, x15, x16, x17 and x18.
Core-Multi-Processing
Set to Enabled to use a processor's Second Core and beyond. (Please refer to
Intel's web site for more information.) The options are Disabled and Enabled.
Machine Checking Available when supported by the CPU
( )
Set to Enabled to activate the function of Machine Checking and allow the CPU to
detect and report hardware (machine) errors via a set of model-specifi c registers
(MSRs). The options are Disabled and Enabled.
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