Thanks, CoderJeff ... After I posted the question, I checked the running processes in the task manager and noticed that I already had a session of the FB program running. When I canceled the process and tried rerunning the EXE ... it worked fine. I'll bet this happened because I tried running the pr...

Thanks for posting your replies. However I'm still stumped. Here's a little program that is supposed to open the COM1 port and return a 'result' from the controller board attached to the serial port. '----------------------------------------------------- Dim Result As Byte Result=Open Com ("COM...

Hi Phishguy ... came across your post about servos. I am brand new to FB but have been programming in QB, VB, VisualFoxPro for lots of years. I have a stepper motor control board from Eggert Electrics which interactively operates steppers using QB at the DOS level (Print #1, ... ). Of course I have ...