          
          move       20,R0             
  start:  wait_sync  4          #sync  
          set_mrk    1                 
                                       
          play       0,1,4             
                                       
          play       2,3,4             
          wait       8          #Wait  
                                       
          play       0,1,4             
                                       
          loop       R0,@start         
          stop                         
