Re: I'm working on my last chip in chapter/week 3: the PC chip

Posted by WBahn on Jul 17, 2019; 5:15pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/I-m-working-on-my-last-chip-in-chapter-week-3-the-PC-chip-tp4033386p4033396.html

Probably. But they would be small components, whereas a Mux8Way16 is a pretty big component.

You were basically there with the truth table you had posted previously.

You had all eight possibilities of (reset, load, inc) listed along with the corresponding action (reset, load, increment, hold) -- you called the 'hold' action 'else'.

Now you just have to add two columns, one for each of the Mux4Way16 control bits. You now have two truth tables (one for each control bit). Design the logic for each one separately.