first commit

project-1-boolean-logic/01/Or8Way.hdl

@@ -0,0 +1,25 @@
+// 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/Or8Way.hdl
+/**
+ * 8-way Or gate: 
+ * out = in[0] Or in[1] Or ... Or in[7]
+ */
+CHIP Or8Way {
+    IN in[8];
+    OUT out;
+
+    PARTS:
+
+    Or(a= in[0], b=in[1] , out=out00 );
+    Or(a= in[2], b=in[3] , out=out01 );
+    Or(a= in[4], b=in[5] , out=out02 );
+    Or(a= in[6], b=in[7] , out=out03 );
+
+    Or(a= out00 , b= out01 , out= out0001 );
+    Or(a= out02, b=out03 , out=out0203 );
+
+    Or(a=out0001 , b=out0203 , out= out );
+
+}