This Software is from Karl Hakimian <hakimian@eecs.wsu.edu>

And the following things are changed by me:    (olaf@criseis.ruhr.de)

1. New readfunction with errordetection. Program works now on heavy
   used machines, too.

2. Switch DC20 back to 9600B when terminating the program, so it is
   possible to restart the program with dc20 stay on.

3. Devicelocking

4. Changed defaultport to /dev/ttyS1 and read port from shell enviroment.
   Put this in you .bashrc-file for com1

   export DC20_PORT='/dev/ttyS0'
   export DC20_LOCKFILE='/var/spool/uucp/LCK..ttyS0'



