logic gate XOR HDL not working with Nand2Tetris [closed] - hdl

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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);
}

Answer 1

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.

Answer 2

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