39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
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/01/DMux8Way.hdl
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/**
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* 8-way demultiplexor:
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* {a, b, c, d, e, f, g, h} = {in, 0, 0, 0, 0, 0, 0, 0} if sel == 000
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* {0, in, 0, 0, 0, 0, 0, 0} if sel == 001
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* {0, 0, in, 0, 0, 0, 0, 0} if sel == 010
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{0, 0, 0, in, 0, 0, 0, 0} if sel == 011
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{0, 0, 0, 0, in, 0, 0, 0} if sel == 100
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{0, 0, 0, 0, 0, in, 0, 0} if sel == 101
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{0, 0, 0, 0, 0, 0, in, 0} if sel == 110
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* {0, 0, 0, 0, 0, 0, 0, in} if sel == 111
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*/
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CHIP DMux8Way {
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IN in, sel[3];
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OUT a, b, c, d, e, f, g, h;
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PARTS:
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// Put your code here:
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Not(in=sel[2], out=out1);
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DMux4Way(in=in, sel=sel[0..1], a=outA, b=outB, c=outC, d=outD);
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And(a=out1, b=outA, out=a);
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And(a=out1, b=outB, out=b);
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And(a=out1, b=outC, out=c);
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And(a=out1, b=outD, out=d);
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DMux4Way(in=in, sel=sel[0..1], a=outE, b=outF, c=outG, d=outH);
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And(a=sel[2], b=outE, out=e);
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And(a=sel[2], b=outF, out=f);
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And(a=sel[2], b=outG, out=g);
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And(a=sel[2], b=outH, out=h);
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} |