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authorFrederick Yin <fkfd@fkfd.me>2022-08-16 11:54:23 +0800
committerFrederick Yin <fkfd@fkfd.me>2022-08-16 11:54:23 +0800
commit9542deeb483a00b6fabed7574720926ce97d7511 (patch)
tree0f2c1f72c03dd4693fd59df67544d2a4dddc5494 /projects/01/DMux8Way.hdl
parent9c0cb1d1c32724fc95ac9548e4f8d873d3adaccc (diff)
Projects, 01-06 completed
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+// 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:
+ DMux(in=in, sel=sel[2], a=ad, b=eh);
+ DMux(in=ad, sel=sel[1], a=ab, b=cd);
+ DMux(in=eh, sel=sel[1], a=ef, b=gh);
+ DMux(in=ab, sel=sel[0], a=a, b=b);
+ DMux(in=cd, sel=sel[0], a=c, b=d);
+ DMux(in=ef, sel=sel[0], a=e, b=f);
+ DMux(in=gh, sel=sel[0], a=g, b=h);
+}