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- SCROLL LOCK
- -----------
-
- INTRODUCTION
- ------------
-
- SCROLOCK.COM is a small memory-resident (TSR) utility for IBM and
- compatible PC's that does one thing: makes the Scroll Lock key
- functional. Normally when using the TYPE, DIR, and other DOS
- commands, information scrolls off the screen too fast for you to
- read. You can press Ctrl-S to pause the scrolling, but that's
- only a partial solution. SCROLOCK make the Scroll Lock key do
- what it should do. Press it once and the screen pauses...press it
- again to resume scrolling.
-
- SCROLOCK works by constantly intercepting the video BIOS interrupt
- (INT 10h), checking the status of the Scroll Lock. If the key is
- not engaged, processing continues as usual with virtually no
- delay. If the key IS engaged, the system will wait until it is
- released before continuing. Only the foreground application is
- halted by SCROLOCK, and only when it is updating the screen.
-
-
- HARDWARE REQUIREMENTS
- ---------------------
-
- SCROLOCK works on any IBM-compatible computer with DOS 2.1 or a
- later version. It has no special memory or monitor requirements.
-
-
- USING SCROLOCK
- --------------
-
- To activate SCROLOCK, simply type SCROLOCK at the DOS prompt, or
- include the line in your AUTOEXEC.BAT or other batch file. It is
- useful in particular with programs and languages (like
- BASICA/GWBASIC) that do not recognize a "control-S" keypress to
- halt a long screen listing.
-
- NOTE: SCROLOCK should be loaded only once during a session at
- the computer. If you invoke it a second time, you will just eat
- up another 400 bytes or so of memory for no good purpose. You can
- use a TSR manager like INSTALL/REMOVE or MARK/RELEASE or POPDROP
- to reclaim the memory used by the program and disable it. (The
- active part of the program after installation is actually less
- than 32 bytes long. The other 300-odd bytes it uses are basically
- DOS overhead.)
-
- After loading SCROLOCK, simply press the Scroll Lock key to pause
- any data scrolling too fast for you to read. To resume scrolling,
- press the key once more. You may repeat this process as needed.
-
- Because of the way it works, SCROLOCK will always pause the screen
- BETWEEN the output of two characters, not DURING the output of a
- single character, eliminating this source of confusion.
-
- DONATIONS
- ---------
-
- This is my first attempt at "publishing" a PC utility program.
- Feel free to use it and to give copies to whomever you choose, but
- please also include this documentation file with it. If you upload
- it to another BBS system, upload the two files together as a .ZIP
- or .ARC or similar combined file.
-
- I do not demand that you pay me money if you find the program
- useful, but if you would like to contribute $5.00 or so it would
- certainly encourage me to attempt other, more ambitious projects.
-
- Send any contributions to:
-
- Daniel Schwartz
- 75 E. 190 St. #1D
- Bronx, NY 10468
-
-