Datasheet

Chapter 4: BIOS

4-13

Enabling Multi-Media Timer

Select Yes to activate a set of timers that are alternative to the traditional 8254

timers for the OS use. The options 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 and x12.

Hyperthreading (*Available when supported by the CPU.)

Set to Enabled to use the Hyperthreading Technology, which will result in increased

CPU performance. The options are Disabled and Enabled.

Machine Checking (*Available when supported by the CPU.)

Set to Enabled to use this function which will 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.

C1 Enhanced Mode (*Available when supported by the CPU.)

Set to Enabled to enable Enhanced Halt State to lower CPU voltage/frequency to

prevent overheat. The options are Enabled and Disabled. (*Note: please refer

to Intel’s web site for detailed information.)

Execute Disable Bit (*Available when supported by the CPU.)

Set to Enabled to allow the processor to classify areas in memory where an

application code can execute and where it cannot, and thus preventing a worm or

a virus from inserting and creating a ﬂ ood of codes to overwhelm the processor or

damage the system during an attack.

(*Note: this feature is available when your OS and your CPU support the function

of Execute Disable Bit.) The options are Disabled and Enabled. (Note: For more

information regarding hardware/software support for this function, please refer to

Intel's and Microsoft's web sites.)