thomas@mvac23.UUCP (Thomas Lapp) (08/23/89)
Apologies to all who go , "Gee, any Unix/C wizard knows that."
I am writing a program which will raise DTR on the COM port (we're talking
IBM-PC here), send a dial command to a Hayes-like modem, and exit. So
far I've done all three. However, when the program exits, it lowers DTR
as part of it's cleanup (I'm talking previously hacking in BASIC). This is
no good, since the dial command goes out and before anything happens, DTR
goes low killing the modem.
Background: I am using a terminal emulator which operates in block mode.
However the modem can't handle a string which ends in an XOFF rather than
a carriage return. So.... I though I would write a 'dialer' program which
would dial the modem, then exit and start the emulation program so that it
is ready by the time the modem connects. So while going from the dialer
program to the emulator, DTR has to stay high (so that the modem doesn't
hang up).
The question: Can I do this with Turbo C? Do I have control over those
bits in the 'modem port' of the PC?
Thanks,
- tom
internet: mvac23!thomas@udel.edu or thomas%mvac23@udel.edu
uucp : {ucbvax,mcvax,psuvax1,uunet}!udel!mvac23!thomas
Location: Newark, DE, USA
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