Depends on which part you are wondering about. First things first. Are you familiar with what Duff’s Device is? If not, have a look at https://en.wikipedia.or

Depends on which part you are wondering about. First things first. Are you familiar with what Duff’s Device is? If not, have a look at https://en.wikipedia.org/wiki/Duff%27s_device https://en.wikipedia.org/wiki/Duff%27s_device And actually before that, are you familiar with switch statements and the difference between having breaks in the switch cases and falling through from one switch case to the next?