Tyan Computer Tyan S1598 Video Off Option, Video Off Method, Modem Use IRQ, Soft-Off by Pwrbtn

Chapter 3

BIOS Configuration

Video Off Option

Selects the power-saving modes during which the monitor goes blank.

Always On	Monitor remains on during power-saving modes.
Suspend --> Off	Monitor blanked when system enters Suspend mode.
All Modes--> Off	Monitor blanked when system enters any power-saving mode.

Video Off Method

Determines the manner in which the monitor is blanked. The Blank Screen option will let the system BIOS blank the screen when disabling video. V/H sync+Blank will allow the system BIOS to turn off the V-SYNC and H-SYNC signals running from the VGA card to the monitor.

V/H	System turns off vertical and horizontal synchronization ports
SYNC+Blank	and writes blanks to the video buffer.
	Select this option if your monitor supports the Display Power
DPMS	Management Signaling (DPMS) standard of the Video
	Electronics Standards Association (VESA). Use the software
Support
	supplied for your video subsystem to select video power
	management values.
Blank Screen	System only writes blanks to the video buffer.

MODEM Use IRQ

If Modem Ring Resume is Enabled, it is possible to wake the system by dialing in to it. This field determines which IRQ will be monitored for the incoming call.

Soft-Off by PWRBTN

When you select Instant Off or Delay 4 Sec., turning the system off with the on/off button places the system in a very low power usage state, either immediately or after 4 seconds, with only enough circuitry receiving power to detect wake-up event activity.

** PM Timers **

The following modes are Green PC power saving functions that are user- configurable only in User Defined Power Management mode.

HDD Power Down

After the selected period of drive inactivity (1 to 15 minutes), the hard disk drive powers down while all other devices remain active.

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