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I've done 'And', 'And16', 'DMux', 'DMux4Way', right this way:Only using Nand Gate.
But while trying DMux8Way, the error is occured.
Can you change this file?
(I'm sorry about lack of comment)
DMux8Way.hdl
// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/01/DMux8Way.hdl
/**
* 8-way demultiplexor:
* {a, b, c, d, e, f, g, h} = {in, 0, 0, 0, 0, 0, 0, 0} if sel == 000
* {0, in, 0, 0, 0, 0, 0, 0} if sel == 001
* etc.
* {0, 0, 0, 0, 0, 0, 0, in} if sel == 111
*/
CHIP DMux8Way {
IN in, sel[3];
OUT a, b, c, d, e, f, g, h;
PARTS:
//Initialization
Nand(a=sel[0], b=sel[0], out=nsel0); //not of sel[0]
Nand(a=sel[1], b=sel[1], out=nsel1);
Nand(a=sel[2], b=sel[2], out=nsel2);
//Path : 'And' processing
Nand(a=nsel2, b=nsel1, out=n00);
Nand(a=n00, b=n00, out=s00);
Nand(a=nsel2, b=sel[1], out=n01);
Nand(a=n01, b=n01, out=s01);
Nand(a=sel[2], b=nsel1, out=n10);
Nand(a=n10, b=n10, out=s10);
Nand(a=sel[2], b=sel[1], out=n11);
Nand(a=n11, b=n11, out=s11);
Nand(a=s00, b=nsel0, out=n000); //'not' of value of sel for a
Nand(a=n000,, b=n000, out=sel000); //value of sel for a
Nand(a=s00, b=sel[0], out=n001);
Nand(a=n001, b=n001, out=sel001);
Nand(a=s01, b=nsel0, out=n010);
Nand(a=n010, b=n010, out=sel010);
Nand(a=s01, b=sel[0], out=n011);
Nand(a=n011, b=n011, out=sel011);
Nand(a=s10, b=nsel0, out=n100);
Nand(a=n100, b=n100, out=sel100);
Nand(a=s10, b=sel[0], out=n101);
Nand(a=n101, b=n101, out=sel101);
Nand(a=s11, b=nsel0, out=n110);
Nand(a=n110, b=n110, out=sel110);
Nand(a=s11, b=sel[0], out=n111);
Nand(a=n111, b=n111, out=sel111);
//Result
Nand(a=in, b=sel000, out=aa);
Nand(a=aa, b=aa, out=a);
Nand(a=in, b=sel001, out=bb);
Nand(a=bb, b=bb, out=b);
Nand(a=in, b=sel010, out=cc);
Nand(a=cc, b=cc, out=c);
Nand(a=in, b=sel011, out=dd);
Nand(a=dd, b=dd, out=d);
Nand(a=in, b=sel100, out=ee);
Nand(a=ee, b=ee, out=e);
Nand(a=in, b=sel101, out=ff);
Nand(a=ff, b=ff, out=f);
Nand(a=in, b=sel110, out=gg);
Nand(a=gg, b=gg, out=g);
Nand(a=in, b=sel111, out=hh);
Nand(a=hh, b=hh, out=h);
}
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Locked
