I've attached an example of how to use the Gnu C-compiler with the C-Control II.
This free compiler can be downloaded from www.hightec-rt.com.
 
The example assumes the compiler is installed. By calling make.bat it will generate a prg.hex file
that can be downloaded in the CC2. Together with the the test.c2 program (it calls the c code)
it will show a message on the internal display of the CC2.
 
Of course this is only a very simple beginning, I demonstrates how to write in C for the CC2!
 
Best regards,
 
Eric Hospel