logic gate XOR HDL not working with Nand2Tetris

Question

i'm not too sure why my Nand2tetris simulator keep telling me line 3 error. can anyone tell me any problem with the following code:

CHIP Xor {
    IN a, b;
    OUT out;

    PARTS:
    Not(in=a, out=nota);
    Not(in=b, out=notb);
    And(a=a, b=notb, out=m);
    And(a=nota, b=b, out=n);
    Or(a=m, b=n, out=out);
}

I'm not too sure why suddenly it works. It doesn't seem to be the code issue. Or maybe Nand2Tetris simulator not working well? hmm — Steven Meow De Claude, May 25 '15 at 16:36
Are you following along with Module 1, Lecture 5? If so, you'll find the file that Noam is using in the lecture in the "demo" folder, not the 01 folder. — Mailbox, Apr 19 '23 at 00:25

score 11 · Answer 1 · answered Aug 24 '18 at 20:53

Place your file in the Project00 directory where there is no other chipset; if it (the Xor.hdl file) is in another directory the simulator will attempt to use other chips in your folder. It is likely those chips are merely skeletons still waiting to be "functioning" via your design implementation thus your chip will not load nor will it allow you to eval (-uate) any data.

score 3 · Answer 2 · answered Oct 07 '19 at 00:31

3

I just had this same issue. I had to move the HDL, TST and CMP files into a separate directory and rerun.

answered Oct 07 '19 at 00:31

RickNG

31
5

logic gate XOR HDL not working with Nand2Tetris

2 Answers2