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README.DPM
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1994-07-12
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***********************************************************************
Display Power Management Signaling (DPMS)
***********************************************************************
READ THIS FILE COMPLETELY BEFORE ATTEMPTING TO USE THIS PRODUCT !
*****************************
Contents
1.0 Introduction
2.0 Requirements
3.0 Installation
4.0 Using DPMS
5.0 Known Problems
6.0 Reporting Problems
*****************************
1.0 Introduction
The DPMS Terminate and Stay Resident (TSR) program allows you to use the
energy saving features of a monitor that conforms to the VESA Display Power
Management Signaling (DPMS) Proposal. This program provides DPMS signaling
under the DOS environment. This TSR will not provide DPMS support under
Windows. If you wish to use DPMS under Windows, use the ATI Desktop DPMS
icon.
The DPMS proposal is designed to work in conjunction with other power
management standards such as the U.S. Environmental Protection Agency's
Energy Star Computer program in reducing PC power consumption after an
extended period of inactivity from the user. The power management states
are designed to follow the Microsoft/Intel Advanced Power Management standard.
The three power management states are known as Standby, Suspend and Off.
Standby represents a state of minimal power reduction. Suspend represents
a state with a significant reduction in power consumption. Off represents
the lowest level of power consumption.
*****************************
2.0 Requirements
- mach64 Accelerator Card
- System:
DPMS requires at least a 386-based or higher computer running
at least DOS 5.0 or greater. The display monitor must comply
with the VESA Display Power Management Signaling proposal.
-Monitor:
DPMS compliant monitors ONLY. Damage may occur to non-DPMS monitors
*****************************
3.0 Installation
When you run the INSTALL Program on Disk #1 and select the "Utilities
Installation", DPMS.COM is automatically copied to the Utilities
subdirectory. Start the program by typing "DPMS" or DPMS followed by
one or more options at the DOS prompt. See the following section for
details regarding the various options that are available for DPMS.
*****************************
4.0 Using DPMS
To use the screen saver, simply type "DPMS" at the DOS prompt. Type
"DPMS HELP" to get an overview of the commands that DPMS recognizes. The
program is case insensitive so keywords can be entered in upper or lower
case. Keywords and parameters must be separated by at least one space or
tab character, e.g. "DPMS STBY 5" is fine, but "DPMS STBY5" will generate
an "unknown parameter" error.
Typing DPMS with no options will load the TSR with default timer settings.
If the TSR is already loaded, typing DPMS with no options simply displays
the current timer settings; the timers are not adjusted.
If any timer keyword is specified, all timers that are not specified are
automatically disabled. For example "DPMS STBY 5" will set the Standby
timer to 5 minutes and disable the Suspend and Off timers. In other words,
the screen saver will only go into standby mode; it will never go into either
of the other two modes. To set all three timers, specify them all on the
command line e.g. "DPMS STBY 5 SUSP 10 OFF 15".
The following options are recognized by DPMS. These options may appear in
any order, although specifying HELP or UNLOAD will cancel all other options:
STBY {number of minutes} - Sets the standby timer. After the specified
number of minutes has elapsed with no keyboard activity, DPMS puts
the monitor into Standby mode.
SUSP {number of minutes} - Sets the suspend timer. After the specified
number of minutes has elapsed with no keyboard activity, DPMS puts
the monitor into Suspend mode.
OFF {number of minutes} - Sets the off timer. After the specified number
of minutes has elapsed with no keyboard activity, DPMS puts the
monitor into Off mode.
NOMOUSE - Normally, DPMS only monitors the keyboard for activity and will
optionally monitor the mouse for activity only if it detects that a
Microsoft compatible mouse driver is installed. Specifying the NOMOUSE
option tells DPMS to ignore all mouse activity, even if a mouse driver
is detected.
QUIET - Suppresses the normal messages that DPMS displays when called. This
option is useful in batch files.
UNLOAD - Unloads DPMS from memory.
HELP - Displays a usage message and then exits, no other action is done.
*****************************
5.0 Known Problems
- DOS:
If DPMS is loaded and you receive the message "DPMS unable to unload
itself." when you attempt to unload DPMS, it is likely another TSR has
been loaded after DPMS. Try unloading the other TSR first and then
attempt to unload DPMS again.
- Microsoft Windows 3.1 Enhanced mode:
The DPMS DOS TSR does not run under Windows. When Windows 386 enhanced
mode is started up, DPMS "goes to sleep" by disabling its internal
timers and resumes operation when you either open up a full screen DOS
box or you exit Windows.
If you wish to use DPMS under Windows, use the ATI Desktop DPMS icon.
- Microsoft Windows 3.1 Standard mode:
The DPMS DOS TSR (DPMS.COM) is not supported under Windows when run
in standard mode (/s). Prior to starting Windows, change directory to
the mach64 utilities directory and type:
DPMS UNLOAD
- Microsoft Windows 3.0:
The mach64 does not support DPMS under Windows 3.0.
- Screen Savers:
DOS screen savers should not be used in conjunction with the DOS
DPMS.COM TSR.
Windows 3.1 screen savers should not be used in conjunction with ATI
Desktop's DPMS function.
****************************
6.0 Reporting Problems
If you experience any difficulties, open the file REPORT.TXT and complete
the Problem Report form.