Re: Program Counter Implementation

Posted by huskeyw on May 21, 2019; 3:17am
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Program-Counter-Implementation-tp2974049p4033188.html

cadet1620 wrote

I haven't looked at your HDL in detail, but it looks like you may have a priority problem with load vs. inc.  The spec says that if reset is active, load and inc are don't cares.  When load is active, inc is don't care.

inc and load might be interacting in the Add16.

--Mark

best advice.. took 2 min once I saw this quote.. worked on it for an hour and it kept failing at different test numbers, saw this changed my mux order and worked first time..