Re: ALU Help

Posted by ybakos on Sep 14, 2016; 1:58am
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/ALU-Help-tp4030242p4030243.html

You're on the right track. There's just a mistake in your addition, which is causing the confusion.

   1111
+ 1111
  ------
   1110

Now negate that, and what do you get?