tasks can now be exited by calling exitTask - this MUST be called at the end of a main() to properly shutdown process
tried to get NES running as boss-task, but failed, too complicated with the given time
fixed a bug: stackpointer was point to the END of the stack, now correctly initialized. stack grows from higher memory to lower !!!!
malloc seems to work in a task only within main, something with the stack seems to be broken. couldnt find what is the problem, VERY difficult to debug in asm only
presentation for now: just print text which is sent from console to hdmi-driver. this demonstrates all of our kernel!