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- ALERT.EXE
- ---------
-
- A TSR program, inspired by a (February?) 'letter of the month' to PC-PLUS.
- It displays a visual signal on the screen if the speaker is being used.
-
- 1) The hardware is addressed directly by this program, so it may
- not work on some machines, though it should detect ALL use of
- the speaker.
-
- 2) The program intercepts the timer tick and checks the speaker port
- 18.2 times per second. This may not be enough to pick up all speaker
- use; test with your own software.
- Any software which reprograms the timer ( such as QuickBasic ) will
- cause the "BEEP" message to flash up quicker than normal.
-
- 3) ALERT will try to restore the screen after displaying the "BEEP"
- message (if it has not been rewritten already).
-
- 4) By default ALERT will display the "BEEP" message once only, at the
- beginning of the two second delay time. If the screen is scrolling at
- the time, then the message will disappear immediately.
- Use the optional /R switch to display repeatedly.
- BEWARE: Although using /R means you will not miss the "BEEP", if the
- program you are using at the time attempts attempts to write over it
- then the screen may be restored incorrectly.
-
- 5) ALERT will work in text mode only on most monitors ( mono, CGA, EGA,
- VGA, MCGA ).
-
- 6) Once loaded, ALERT can only be removed by rebooting the system.
-
- If you would like a version which a) detects and prevents multiple
- installation, and b) is capable of unloading itself from RAM, I can
- provide one. The penalty is that it increases program size by around
- 1500 bytes.
- Any other thoughts or suggestions, please let me know. ALERT is NOT
- written in assembler, so I can make substantial revisions very easily.
-
- Mike Williams Telephone:
- 176 HomeField Road
- Sileby Day : 0533 834878 ( if I'm in ! )
- LOUGHBOROUGH Evenings : 0509 813221
- Leics. LE12 7TQ
-
- ALERT is entirely my own work and has not been submitted to any other
- book, magazine or software publisher.
-
-