Abit NF7 User Manual page 59

BIOS Setup
Table 3-1: Wake Up Device and Events
The table below describes which devices or specific events can wake the computer from specific states.
These device/events can wake up the computer......
Power switch
RTC alarm
LAN
Modem
IR command
USB
PS/2 keyboard
PS/2 mouse
Table 3-2: Effect of Pressing the Power Switch
If the system is in this state......
Off
On
On
Sleep
ACPI Suspend Type:
Two options are available: S1 (PowerOn-Suspend)
(PowerOn-Suspend). POS is "Power On Suspend", and STR is "Suspend To RAM". Generally, ACPI
has six states: System S0 state, S1 state, S2 state, S3 state, S4 state, S5 state. S1 and S3 states are
described below:
The S1 (POS) State (POS means Power On Suspend):
While the system is in the S1 sleeping state, its behavior is as described below:
•
The processor is not executing instructions. The processor's complex context is maintained.
•
Dynamic RAM context is maintained.
•
Power Resources are in a state compatible with the system S1 state. All Power Resources that
supply a System Level reference of S0 are in the OFF state.
•
Devices states are compatible with the current Power Resource states. Only devices which solely
reference Power Resources which are in the ON state for a given device state can be in that device
state. In all other cases, the device is in the D3 (off) state.
•
Devices that are enabled to wake the system and that can do so from their current device state can
initiate a hardware event which transitions the system state to S0. This transition causes the
processor to continue execution where it left off.
To transition into the S1 state, the operating software does not have to flush the processor's cache.
......and the power switch is
pressed for
Less than four seconds
More than four seconds
Less than four seconds
Less than four seconds
S3 (Suspend-To-RAM). The default setting is S1
......from this state
Sleeping mode or power off mode
Sleeping mode or power off mode
Sleeping mode or power off mode
Sleeping mode or power off mode
Sleeping mode
Sleeping mode
Sleeping mode or power off mode
Sleeping mode or power off mode
......the system enters this state
Power on
Fail safe power off
Soft off/Suspend
Wake up
3-17
User's Manual