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High Precision Event Timer
Select Enabled to activate the High Precision Event Timer (HPET) that produces periodic
interrupts at a much higher frequency than a Real-time Clock (RTC) does in synchronizing
multimedia streams, providing smooth playback and reducing the dependency on other
timestamp calculation devices, such as an x86 RDTSC Instruction embedded in the CPU.
The High Performance Event Timer is used to replace the 8254 Programmable Interval Timer.
The options are Disabled and Enabled.
Trusted Computing (Available when a TPM device is installed
and detected by the BIOS)
Security Device Support
If a Trusted Platform Module (TPM) device is connected to the TPM header (JTPM1) on the
motherboard and this feature is set to Enable, onboard security devices will be available for
the TPM support to enhance data integrity and network security. Please reboot the system
for a change on this setting to take effect. The options are Disable and Enable.
*If the item above is set to Enable, the following items will become available for user's
configuration:
The following Platform Configuration Register information will be displayed:
•
Active PCR banks
•
Available PCR banks
SHA-1 PCR Bank
Use this item to disable or enable the SHA-1 Platform Configuration Register (PCR) bank for
the installed TPM device. The options are Disabled and Enabled.
SHA256 PCR Bank
Use this item to disable or enable the SHA256 Platform Configuration Register (PCR) bank
for the installed TPM device. The options are Disabled and Enabled.
Pending operation
Use this item to schedule a TPM-related operation to be performed by a security device for
system data integrity. Your system will reboot to carry out a pending TPM operation. The
options are None and TPM Clear.
Platform Hierarchy
Use this item to disable or enable platform hierarchy for platform protection. The options are
Disabled and Enabled.
Storage Hierarchy
Use this item to disable or enable storage hierarchy for cryptographic protection. The options
are Disabled and Enabled.
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Chapter 6: BIOS
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