Re: Understanding DFF behaviour

Posted by jbloggz on Apr 19, 2016; 2:15am
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Understanding-DFF-behaviour-tp4029740p4029749.html

Thank you! That's exactly the answer I was hoping for. So it's actually a bug in the built-in dff implementation? I can understand it would be annoying to fix, since all the test scripts rely on it. However it would be nice if this was mentioned somewhere (or did I miss it?).

I might fix it and see how this affects anything.

Is the reason that it's harmless because the input never changes between the rising and falling edges in the simulator?

It's an interesting bug, because it seems like it was done on purpose. I'd love to here the reasons behind it if there were any.