Why don Intersvr, LapLink, Procomm, etc. work?
They do work, but not under the system manager, unless you use the trick described below. The System Manager slows down the serial port. It can also interfere with console I/O. If you’re having trouble running something under the System Manager, try exiting completely (Menu-Application-Terminate all) and run the program from raw DOS. If the program runs under raw DOS, you can probably get it to run under the system manager by putting an inverted exclamation point (keystroke Fn-Filer) into the comments field of the Application Manager. This effectively disables the System Manager and prevents switching to another application while the current application is running.
