I'm confused. I'm trying to send simple ascii data to a video multiplexer that is looking for data in three bytes like:
/01 display camera 1
/02 display camera 2
/pp display picture in picture
/22 display cameras 2 x 2

I have my 16F877 sending the data to the MUX but it does not respond. If I send the same data to the mux on the same cabling via Hyperterminal(on my laptop) the MUX responds correctly.
If I send the data from 18F877 to the same Hyperterminal
the data appears correct. Does anyone know anything special about Hyperterminal output that would make different from the Pic output?
Specs are: PIC 16F877 & Max 232cpe transmitting at 9600,8,n,1. I know the PIC device works because I can communicate to the cameras.
Any input would be appreciated.

John P