home *** CD-ROM | disk | FTP | other *** search
- Keyloc - Keyboard Lock Program
- --------------------------------
-
- Keyloc is a patch to the BIOS keyboard routine. It modifies the
- operation of the Alt, Ctrl, Left Shift and Right Shift keys. It allows
- one finger typing by locking those keys in their shifted state.
-
- Normally the Ctrl, Alt, Left Shift, and Right Shift keys have to be held
- down with one finger, while another finger is used to type another key.
- For example, if a program requires you enter a ^P, you must hold down
- the Ctrl key with one finger, then depress the "P" key with another.
-
- When Keyloc is loaded in memory, it changes the way these keys operate.
- To type in a ^P, you first type and release the Ctrl key. This locks the
- Ctrl key in it's shifted state. Next the "P" key is depressed and
- released. This enters a ^P. Depressing Ctrl again takes the key
- from it's shifted to unshifted state.
-
- Keyloc gives an audio signal so the user can tell when he is shifting or
- unshifting a key. The first time the Ctrl key is depressed, a low tone
- followed by a high tone is sounded. This signals that the key has been
- put in the shifted state. The next time the Ctrl key is depressed, a high
- tone followed by a low tone is sounded. This signals that the key has
- been returned to the unshifted state.
-
- Loading Keyloc Into Memory
- --------------------------
-
- The program Keyloc is loaded into memory by executing the program
- KEYLOC. This can be done by typing in the name of the program, KEYLOC,
- with the the file KEYLOC.EXE on the diskette in the default drive.
-
- Keyloc remains loaded in memory until the system is rebooted. It uses
- approximately 500 bytes of memory.
-
- Which Version of Keyloc to Use
- ------------------------------
-
- Because Keyloc is only a patch to a program that already exists in
- the ROM of the IBM PC, it may not work if changes are made to the
- code in the ROM.
-
- There are at least 3 versions of ROM-BIOS for the IBM PC and the new
- IBM XT. The original Keyloc patch worked for the first two versions,
- but changes to it were required by the latest version of ROM-BIOS.
-
- The original Keyloc is "KEYLOC.EXE". It should work if you purchased
- your PC before the release of the IBM XT.
-
- A modified version of Keyloc is "KEYLOC_3". This should work if you
- have an IBM XT or an IBM PC purchased after the XT was released.
-
- You can find out which version of ROM-BIOS you computer has by
- using the DEBUG program to print out the release marker of
- your ROM. Type in "DEBUG" to start the program, then type the
- command "D F000:FFF5 L 8". A date will be displayed that indicates
- which ROM you computer has.
-
- "04/24/81" - Version 1, use "KEYLOC.EXE"
- "10/19/81" - Version 2, use "KEYLOC.EXE"
- "10/27/82" - Version 3, use "KEYLOC_3.EXE"