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25 lines
664 B
Plaintext
25 lines
664 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/Or8Way.hdl
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/**
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* 8-way Or gate:
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* out = in[0] Or in[1] Or ... Or in[7]
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*/
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CHIP Or8Way {
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IN in[8];
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OUT out;
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PARTS:
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// combine pairs
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Or(a=in[0], b=in[1], out=pair0);
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Or(a=in[2], b=in[3], out=pair1);
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Or(a=in[4], b=in[5], out=pair2);
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Or(a=in[6], b=in[7], out=pair3);
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// combine groups of pairs
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Or(a=pair0, b=pair1, out=lowGroup);
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Or(a=pair2, b=pair3, out=highGroup);
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// combine both groups
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Or(a=lowGroup, b=highGroup, out=out);
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}
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