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1992-07-04
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1. Included in the archive:
DTRCTRL.PAS A Turbo Pascal 6.0 unit for DTR control with sources so
DTRCTRL.TPU you can compile this with another version of Turbo Pascal
DTR.PAS A little utility to drop or raise DTR with Turbo Pascal
DTR.EXE sources
HANGUP.PAS A utility that will hang up the modem, by dropping the DTR,
HANGUP.EXE pausing and raising the DTR
2. Usage of the DTRCTRL unit:
Two functions can be used in this unit:
- DTRControl (COMPort: Byte; DTR: Boolean);
You just have to specify for which COMPort you want to change the
DTR State, and the DTR option is: TRUE = Raise DTR, FALSE = Drop DTR
- DTRState (COMPort: Byte);
Returns TRUE if the DTR of the specified COMPort is ON (Raised) and
FALSE if the DTR is OFF (Dropped)
3. Other programs in the archive:
You can get the information about their usage by typing the name of the
EXE file without specifying any parameter.
4. Specifications:
If you want to use the DTR as a hangup utility, you have to configure the
modem so when the DTR is off, it hangs up. With lots of modems, you
configure it by typing: AT &D2.
5. Using the unit in your programs
There is no fee when you want to use this unit in your programs. The only
thing you have to do is to SHARE YOUR KNOWLEDGE with other computer users!
If you have problems or questions with serial port and modem programming
(or other topics), you can contact me:
- VIA Mail:
Les Logiciels de Marque inc.
a/s Marc Boutet
974 Senneterre
Sainte-Foy, Québec, Canada
G1X 3Y3
- VIA America On-Line: BERGERONG
- VIA BBS: (418) 651-1394 or (418) 651-7662, login on user: SUPPORT
password: DTR
- VIA Phone: (418) 653-1881
It will also be a pleasure for me to know that you use my units, so let
me know!
Good success!