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Sean O'Connor
c39ce212b4
- Removed verbose explanations - Made comments shorter and more casual - Focus on key concepts rather than formal descriptions
26 lines
1.1 KiB
Plaintext
26 lines
1.1 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/1/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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// One DMux + two DMux4Way
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DMux(in=in, sel=sel[2], a=tmp1, b=tmp2);
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DMux4Way(in=tmp1, sel=sel[0..1], a=a, b=b, c=c, d=d);
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DMux4Way(in=tmp2, sel=sel[0..1], a=e, b=f, c=g, d=h);
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}
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