Re: Not16 failure in building the ALU

Posted by Becca on Nov 01, 2012; 9:44pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Not16-failure-in-building-the-ALU-tp4025519p4025523.html

Hi Mark,

To try and identify the problem, I actually cut everything out of my ALU program except for the Not16 gate (   Not16(in=x, out=notx);).  I am testing it by reloading the file in the Hardware Simulator and then running the test file.  It evaluates notx as -1 when x is 0 (as it should), but continues to output notx as -1 even when x is changed (in the test) to 17.  

If you still think it would be helpful, I would happy to send you my ALU program.  I know it's very unlikely that the Not16 implementation would be failing, but am not sure what else might be going on.

Thanks again!

Becca