<p>in order to single-step on this goddamn core, you have to program the two breakpoint/watchpoint units in tandem</p><p>the second one is used to match on only the address of the current instruction</p><p>and the first one is used to construct a NOT gate appended to the output of the second one</p><p>it took me like 20 minutes to figure out how to implement this, _and i write RTL professionally_</p><p>imagine being a developer with no RTL background or something :)</p>