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Power management setup – Foxconn BLACKOPS User Manual

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Power Management Setup

ACPI (Advanced Configuration and Power Interface) is an open industry standard that defines
power and configuration management interfaces between an operating system and the BIOS.
In other words, it is a standard that describes how computer components work together
to manage system hardware. In order to use this function the ACPI specification must be
supported by the OS (for example, Windows 2000 or Windows XP).
ACPI defines five sleeping states, they are :

S1 - The S1 sleeping state is a low wake latency sleeping state. In this state, no system

context is lost (CPU or chip set) and hardware maintains all system context. (also called

Power On Suspend)

S2 - The S2 sleeping state is a low wake latency sleeping state. This state is similar to

the S1 sleeping state except that the CPU and system cache context is lost (the OS
is responsible for maintaining the caches and CPU context). Control starts from the
processor’s reset vector after the wake event.

S3 - The S3 sleeping state is a low wake latency sleeping state where all system context is lost

except system memory. CPU, cache, and chip set context are lost in this state. Hardware
maintains memory context and restores some CPU and L2 configuration context. Control
starts from the processor’s reset vector after the wake event. (also called

Suspend to

RAM)

S4 - The S4 sleeping state is the lowest power, longest wake latency sleeping state supported

by ACPI. In order to reduce power to a minimum, it is assumed that the hardware platform
has powered off all devices. Platform context is maintained. (also called

Suspend to

Disk)

S5 - The S5 state is similar to the S4 state except that the OS does not save any context. The

system is in the “soft” off state and requires a complete boot when it wakes. Software
uses a different state value to distinguish between the S5 state and the S4 state to allow
for initial boot operations within the BIOS to distinguish whether or not the boot is going to
wake from a saved memory image.

Phoenix - AwardBIOS CMOS Setup Utility

Power Management Setup

► Power On Function

Press Enter

Item Help

ACPI Function

Enabled

ACPI Suspend Type

S3(STR)

Menu Level ►

Soft-Off by PWR-BTTN

Instant-off

Resume by Alarm

Disabled

x Date(of Month) Alarm

0

x Time(hh:mm:ss) Alarm

0 : 0 : 0

HPET Support

Enabled

HPET Mode

32-bit mode

PWRON after PWR-Fail

Off

↑↓��������:Move Enter:Select +/-/PU/PD:Value F10:Save

ESC:Exit F1:General Help

��������:Move Enter:Select +/-/PU/PD:Value F10:Save

ESC:Exit F1:General Help

:Move Enter:Select +/-/PU/PD:Value F10:Save ESC:Exit F1:General Help

F5:Previous Values F6:Fail-Safe Defaults F7:Optimized Defaults

Press Enter