Re: Problem with my ALU

Posted by princejones on Feb 04, 2014; 1:33pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Problem-with-my-ALU-tp4027708p4027715.html

Would using XoutMUX as an input for another chip cause this problem? Because I thought you can use the output from any chip as an input so long as it wasn't the final "out".

On Feb 3, 2014, at 1:39 PM, "cadet1620 [via Nand2Tetris Questions and Answers Forum]" <[hidden email]> wrote:

princejones wrote

Hi, I'm having a problem with my ALU. After a bug fixing my chip completely(I had thought) I get an error on my first line of code: Line101, XoutMUX has no source pin.

This is the first line: Mux16(a = x, b = false, sel = zx, out = XoutMux);

I'd appreciate if I could get any help on this,
Thanks

I don't see anything wrong with this line. Note that the message you quoted has all upper case MUX. If that's not a typo in the post, then you have some part that's using XoutMUX as an input. The line number in the error message may be incorrect.

If you can't find the problem, feel free to email me your HDL.

--Mark

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