Jim Johnson writes "I am the author of that system. The package was
known as the "Deadlock BBS Construction Kit". We have not supported
or developed it for many years, it faded away in 1986-7.
As a bit of history: The software was written in compiled basic
and the source code was so large that it could only be edited on
a Commodore 128. The company was a 2 man operation, myself, Jim
Johnson, and my partner, Kevin Masucci. We operated out of our
homes and sold the system nationwide via PC magazines."