QkoSad
32 lines
792 B
Plaintext
Executable File
32 lines
792 B
Plaintext
Executable File
// 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/01/DMux4Way.hdl
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/**
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* 4-way demultiplexor:
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* {a, b, c, d} = {in, 0, 0, 0} if sel == 00
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* {0, in, 0, 0} if sel == 01
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* {0, 0, in, 0} if sel == 10
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* {0, 0, 0, in} if sel == 11
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*/
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CHIP DMux4Way {
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IN in, sel[2];
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OUT a, b, c, d;
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PARTS:
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Not(in=sel[1],out=notsel1);
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Not(in=sel[0],out=notsel0);
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And(a=notsel1,b=notsel0,out=out1);
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And(a=notsel1,b=sel[0],out=out2);
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And(a=sel[1],b=notsel0,out=out3);
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And(a=sel[1],b=sel[0],out=out4);
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And(a=in,b=out1,out=a);
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And(a=in,b=out2,out=b);
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And(a=in,b=out3,out=c);
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And(a=in,b=out4,out=d);
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} |