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EGABLANK.DOC
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1986-09-04
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EGABLANK
PC Magazine, 9/30/86
"EGABLANK" is a program described in the PC TUTOR section of the 9/30/86
issue of PC Magazine to be included in your autoexec.bat file (or to be
otherwise invoked on demand, if you'd prefer) to blank an EGA or EGA
compatible screen after n minutes. (Programs like SCRN.COM will NOT blank
an EGA screen).
The program was written to blank the screen after 7-1/2 minutes of keyboard
inactivity. However, it can be revised to increase or decrease the wait
before blanking by revising the line 'MOV WO [010A],2000' to something
else. "A value of 1 will blank the screen every 55 milliseconds. Going up
to FFFF gives you about an hour before the lights go out."
"While it is really intended only for the monochrome display (these are the
ones susceptible to phosphor burn), it will also work with a color display
attached to an EGA."
"EGABLANK will not work well with programs that entirely steal the keyboard
interrupt, since it then has no way of knowing when keys have been struck.
If you have any of these programs, you probably know about this, since
other resident programs won't work with them either."
I have an Amdek 722 EGA color monitor. SCRN.COM will NOT blank my screen
as it would with my standard IBM color monior.
I keyed in and debugged the source code included in this ARC file and
immediately invoked the resulting EGABLANK program. IT WORKED, blanking my
screen after the promised 7-1/2 minutes of inactivity!
Ed Kanka
9/4/86