Initial Commit with everything done

2021-04-13 00:07:23 +03:00
commit 20cf599d89
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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/DMux4Way.hdl
+
+/**
+ * 4-way demultiplexor:
+ * {a, b, c, d} = {in, 0, 0, 0} if sel == 00
+ *                {0, in, 0, 0} if sel == 01
+ *                {0, 0, in, 0} if sel == 10
+ *                {0, 0, 0, in} if sel == 11
+ */
+
+CHIP DMux4Way {
+    IN in, sel[2];
+    OUT a, b, c, d;
+
+    PARTS:
+    Not(in=sel[0],out=negSel1);
+    Not(in=sel[1],out=negSel2);
+    
+    And(a=in,b=sel[0],out=out1);
+    And(a=in,b=negSel1,out=out2);
+    And(a=in,b=sel[1],out=out3);
+    And(a=in,b=negSel2,out=out4);
+
+    And(a=out1,b=out3,out=d);
+    And(a=out2,b=out3,out=c);
+    And(a=out1,b=out4,out=b);
+    And(a=out2,b=out4,out=a);
+}