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- N O T E S O N S P E E D K E Y
- by John B. Zuckerman
- 7230 Wurzbach, #1603
- San Antonio, TX 78240
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- 1. To use SPEEDKEY, simply type "SK" at the DOS prompt. The
- program then loads, initializes, and returns to DOS. You may
- now run any other DOS program (except BASIC under DOS 1.1,
- see below). The keyboard repeat speed is now nearly
- doubled. SPEEDKEY is completely invisible to other programs.
-
- 2. I have attempted to keep the operation of the keyboard
- exactly the same except for the speedup. Even without
- SPEEDKEY, the keyboard produces some bizarre effects at times
- (especially when the BIOS keyboard buffer becomes full).
- These effects are also present with SPEEDKEY.
-
- 3. The interrupt handlers do something that from a
- programming standards perspective is blatantly illegal. They
- actually jump into the middle of a ROM BIOS routine rather
- than enter the routine via the conventional method (using the
- INT instruction).
-
- Because this is in violation of the established programming
- standards, I have included extra code in the initialization
- part of the program to verify that the version of BIOS
- encountered is one of the recognized versions (there are four
- of these, in total).
-
- 4. I have tested the program on both PC's and XT's, with DOS
- 1.1 and 2.0, and with a variety of software. The only
- commonly used program that I have found so far that will not
- work properly with SPEEDKEY is BASIC under DOS 1.1 (and
- BASICA). Actually, BASIC runs fine, but the repeat function
- is defeated. Curiously, when you exit BASIC (with SPEEDKEY
- installed), the repeat function is reinstated!
-
- 5. Should you find a bug or error caused by this program, I
- would be grateful if you would report it to me.
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-
-
- 5. Should you find a bug or error caused by this program, I
-