Dear Sirs
I have exactly the same problem. Unable to connect uV3.3c to monitor.
Could you please help with this?
I use mon-int-sio1.hex, SIO1 Connector 38400 Baud.
There is no step by step introduction on how to get an application running on this monitor. It is even not obvious on how to compile and link in such a way it does not interfere with the monitor ressources. There is no source of the monitor either.
Sincerely Felix Daners