When is the PP (program pointer) lost?

Hi

Many ways. Here just two of them

1) if you are running one program and you select another program to move a point it will be a pp lost

2) after reboot

I mean every time you alter the location jumping from one program to another. All robot that I know do that

Loading a new program or module, use of the EXIT instruction. Changing a line of code right where the program pointer is. Sysfail, maybe certain serious errors.