hello marc,
sorry for my late response. Attached you will find a new zip-file - I add some descriptions in english and deleted german letters :smileywink:
my problem is as follows:
when you did not activate the TimerB in main.c when deleting // and also in softec_linker.prm (see prm directory) the program runs, means the ports next to the while-loop will switch up and down.
If you activate the TimerB - function is a flashing LED for active processor - the program does not work correctly, means the port C4 is always on a high and also the sound is on - seems that the while-loop is not entered, or the TimerB-Interrupt is not disabled anymore.
Thanks for your help.
Best regards
Hubert