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Chapter 6: BIOS
Restore on AC
Power Loss
This option allows you to specify what your system will do when power is
restored after an AC power loss. Options include Power Off, P
OWER ON and
L
AST STATE.
Power Button
Function
This option allows you to specify the power button function for turning off your
system. Options include 4 S
ECOND OVERRIDE and Instant Off.
Table 6-8. ACPI Configuration Sub-menu
Menu Option Description
Advanced ACPI
Configuration
This sub-menu allows you to configure Advanced Configuration and Power
Interface (ACPI) power management setting for your system.
Please refer to ACPI’s website http://www.acpi.info/ for more information.
ACPI Version
Features
This option allows you to enable RSDP pointers to 64-bit fixed system
description tables. Options include ACPI v1.0, ACPI v2.0 and ACPI v3.0.
ACPI APIC
Support
This option allows you to include an ACPI APIC table pointer in the Root System
Description Table (RSDT) pointer list. Options include Enabled and D
ISABLED.
AMI OEMB Table
This option allows you to include the OEMB table pointer to R(x)SDT pointer
lists. Options include Disabled or E
NABLED.
Headless Mode
This option allows you to enable your system to function without a keyboard,
monitor or mouse attached. Options include Disabled or E
NABLED.
Chipset ACPI
Configuration
This sub-menu allows you to configure Chipset ACPI configurations.
Energy Lake
Feature
This option allows you to enable the Energy Lake Feature in your system.
Options include Enabled and D
ISABLED.
APIC ACPI SCI
IRQ
This option allows you to enable the APIC ACPI SCI IRQ in your system. Options
include Enabled and D
ISABLED.
USB Device
Wakeup From S3/
S4
This option allows you to enable/disable USB device wakeup from S3/S4.
Options include Disabled or E
NABLED.
High Performance
Event Timer
Select Enabled to activate the High Performance Event Timer (HPET). This
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 HPET is used to replace
the 8254 Programmable Interval Timer. Options include Enabled and D
ISABLED.
HPET Memory
Address
This option allows you to set your HPET Memory Address for your system.
Options include FED00000h, FED01000h, FED02000h and FED03000h.
Table 6-7. Chipset Configuration Sub-menu (Continued)
Menu Option Description