Unfortunately, this article manages to get the single example execution entirely wrong. > We begin by subtracting 7 from 7 (the locations of A and B), and will

Unfortunately, this article manages to get the single example execution entirely wrong. > We begin by subtracting 7 from 7 (the locations of A and B), and will store the result (0) in location B. Here the example gets confused as it shows the 0 result stored not in location B (address 4) but in the middle of the executing instruction (address 1). This mistake is then repeated for the next instruction.