This program shows how to use an external UART on the PIC. It will identify ports 0 and 1 on startup then transfer data from port 0 to 1 and from 1 to 0. This example will work with the PCB, PCM and PCH compilers.-This program shows how to use an external UART on the PIC. It will identify ports 0 and 1 on startup then transfer data　from port 0 to 1 and from 1 to 0.　This example will work with the PCB, PCM and PCH compilers.