What a beautiful intro to assembly programming and reverse engineering. Very minor issues that bother me more than they should:

- Could it be that there is a whitespace missing after the " ◐ " or is the gap in the border intentional?

- X/Z are used in the 'program structure' example without introducing them beforehand (or mentioning 'we will look at these later').

- A real RE report would certainly have mentioned all visible part numbers and the type of I/O controller. Although it is certainly not relevant to the game, it somehow bothers me that the author decided to omit this information. (hmm, maybe this was described in Section 3?)