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24 lines
584 B
Plaintext
24 lines
584 B
Plaintext
// This file is part of www.nand2tetris.org
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// and the book "The Elements of Computing Systems"
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// by Nisan and Schocken, MIT Press.
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// File name: projects/1/Xor.hdl
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/**
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* Exclusive-or gate:
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* if ((a and Not(b)) or (Not(a) and b)) out = 1, else out = 0
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*/
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CHIP Xor {
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IN a, b;
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OUT out;
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PARTS:
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// invert both inputs
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Not(in=a, out=notA);
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Not(in=b, out=notB);
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// a and not b path
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And(a=a, b=notB, out=aPath);
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// not a and b path
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And(a=notA, b=b, out=bPath);
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// combine both paths
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Or(a=aPath, b=bPath, out=out);
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}
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