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- RS232 - Asynchronous Communications Port Monitor - Version 2.03
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- RS232 is a memory resident program that displays RS-232 signals
- for com1 or com2. It is intended to enhance internal modems by
- supplying software "lights" similar to those found on most
- external modems.
-
- Command Format: RS232 [ | ? | 1 | 2 ] where [ ... ] denotes a
- choice the following:
-
- blank - Displays this output before installed
- Disables/enables display after installed
-
- ? - Displays this output anytime
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- 1 - Installs resident portion of RS232 for COM1
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- 2 - Installs resident portion of rs232 for COM2
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- No method of removing this program from memory has been
- implemented. A boot is required.
-
- The output of this monitor program is displayed in the upper
- right hand corner of the display. From left to right the meaning
- of the eight character display is:
-
- T R R C R C T S
- | | | | | | | |____ data (S)et ready
- | | | | | | |______ data (T)erminal ready
- | | | | | |________ (C)arrier detect
- | | | | |__________ (R)ing indicate
- | | | |____________ (C)lear to send
- | | |______________ (R)equest to send
- | |________________ (R)eceive data
- |__________________ (T)ransmit data
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- If any signal is off, its position will show a period.
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- Compatibility:
-
- RS232 has been tested with IBM and Hercules monochrome and IBM
- color graphics video boards. It has been used with an IBM EGA
- for a limited time with no ill effects. Modems that have been
- tested with RS232 are Hayes 1200B, Hayes 300 and Ventel Half
- Card. RS232 runs on the author's Fido node and causes no
- problems for the Fido software running on an IBM PC.
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- Program limitations:
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- The status bits used for Receive and Transmit Data get cleared
- too fast by the communication programs to be of much use. Those
- signals therefore don't appear much of the time even though data
- is being received and transmitted.
-
-
- Copyright (c) 1986 William H. Beers, IV Page - 1
- All Rights Reserved 23 Dec 1986
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- RS232 - Asynchronous Communications Port Monitor - Version 2.03
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- Update History:
-
- 2.01 - April 86 - Original "working" version.
- 2.02 - Aug 86 - Internal clean up.
- 2.03 - Dec 86 - Fix lost characters when running with ProComm.
- Added code to RS232 to send EOI to the 8259
- instead of waiting for int 8 to do it when
- RS232 iret'd from int 1Ch.
-
- Distribution rights:
-
- Permission is granted to freely distribute this code, but not for
- profit, provided that this notice, the following disclaimer, and
- and this documenation file are included in their entirety and
- without modifications of any sort or nature. Commercial use of
- this work, without the expressed written consent of the author,
- is specifically prohibited.
-
- The author's address:
-
- William H. Beers, IV
- 1136 Bliss Drive
- St. Louis, MO 63137
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- Sysop, Fido 100/240, FidoNet mail only.
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- Disclaimer:
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- This prgoram is provided "as-is" without warranty of any kind,
- either expressed or implied, including, but not limited to the
- implied warranties of merchantability and fitness for a
- particular purpose. The entire risk as to the results and
- performance of the program is assumed by the user. Should the
- program prove defective, you (and not the author) assume the
- entire cost of all servicing, repair, or correction.
-
- The author or anyone else who has been involved in the creation,
- production or delivery of this program shall not be liable for
- any direct, indirect, consequential or incidental damages arising
- out of the use or inability to use this program.
-
- Despite all the above, the author would appreciate having bugs
- reported via FidoNet to SYSOP on node 100/240 or via US Mail.
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- Credit for this notice's wording given to Thomas J. Foth.
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- Credit given to John Socha for his screen save program which
- provided an example of the basic technique for resident
- programs.
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- Copyright (c) 1986 William H. Beers, IV Page - 2
- All Rights Reserved 23 Dec 1986
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