Complete first project

1_Boolean_Arithmetic/Mux8Way16.hdl

@@ -0,0 +1,26 @@
+// 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/1/Mux8Way16.hdl
+/**
+ * 8-way 16-bit multiplexor:
+ * out = a if sel = 000
+ *       b if sel = 001
+ *       c if sel = 010
+ *       d if sel = 011
+ *       e if sel = 100
+ *       f if sel = 101
+ *       g if sel = 110
+ *       h if sel = 111
+ */
+CHIP Mux8Way16 {
+    IN a[16], b[16], c[16], d[16],
+       e[16], f[16], g[16], h[16],
+       sel[3];
+    OUT out[16];
+
+    PARTS:
+    Mux4Way16(a=a, b=b, c=c, d=d, sel=sel[0..1], out=x);
+    Mux4Way16(a=e, b=f, c=g, d=h, sel=sel[0..1], out=y);
+    Mux16(a=x, b=y, sel=sel[2], out=out);
+}