I didn't fully think through my application before posting my question. Async com port routines to handle com port interrups only work well if one has access to the low level operating system. In that case the receive buffer interrupt would cause a jump to an interrupt service routine.. I don't believe that Python provides that capabilty directly. The solution then would be to write a C extention?
The suggestions offered by respondents to my original post were almost all of a "Use threads, and poll as needed" flavor. You're right...I need to learn threads as applied to com ports. Norm B -- http://mail.python.org/mailman/listinfo/python-list
