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- Screen Save Program for the Hercules Graphics Card
-
- There is in circulation on electronic bulletin boards, magazines and
- users groups a program called variously, Mono Blank, Monitor Blank,
- MONBLK2, SCRNSAVE, and probably a few other things by now too. The
- program is designed to remove the display from the monochrome screen
- after some period of inactivity. This is meant to protect the monitor
- from having an image burned into the phospher if something is left on
- the screen for a long time. The programs will work on IBM's monochrone
- board, but are quite unsuitable for use with a monochrome graphics card.
- This is because in graphics mode the 6845 CRT controller chip operates
- with a different set of controlling parameters than it uses in a text
- mode. If one of these programs goes into effect while the board is in
- graphics mode it will remove the display, but will not replace proper
- parameters. Quite severe monitor damage can result.
-
- On this diskette is a file called HGC.COM. It is an elaboration of the
- HGC.EXE file that has been shipped with the Hercules Graphics Card model
- GB101. The program will blank the screen after there has not been any
- activity at the keyboard for five minutes. It will ONLY run properly on
- the Hercules Graphics Card. Do NOT use this program with a regular IBM
- Monochrome Display/Printer Adapter Card, or any video adapter other than
- the Hercules Graphics Card. If you are using any other version of this
- program with a Hercules Graphics Card you should immediately get rid of
- it. And tell anyone else that you know who may be using it in the same
- situation to do so as well. This program was written by Hercules in
- response to a number of their customers who were having unfortunate
- experiences with other versions of this program.
-
- To use the program simply type "HGC SAVE" while at the DOS level. If you
- want to incorporate this command in a regular start-up configuration for
- the Hercules Card, you can specify "HGC FULL SAVE" or "HGC HALF SAVE".
- After the program takes effect, and blanks the screen, the display may be
- restored by striking any key. (The shift key is recommended, because the
- keystroke will be processed.)