How to debug source code?
 
     To run simulation in source code debug mode, click ‘Start Debug’ button in the 
            
        code editor window
             prior to execution of Time Domain 
        analysis
 During execution, code editor window is active and visible. The line by line 
     execution can be viewed by clicking the ’step into’ button each time.
    
     
    The changes in the contents of ports and registers can be viewed during this 
        process. The ‘Stop Debug’ button terminates debug mode.