Or8Way done

README.md

@@ -20,7 +20,7 @@ Build order as per the website. Cost for each gate in NAND in brackets.
 - [x] `And16` (32)
 - [x] `Or16` (48)
 - [x] `Mux16` (113)
-- [ ] `Or8Way` ()
+- [x] `Or8Way` (21)
 - [ ] `Mux4Way16` ()
 - [ ] `Mux8Way16` ()
 - [ ] `DMux4Way` ()

projects/01/Or8Way.hdl

@@ -4,14 +4,24 @@
 // File name: projects/01/Or8Way.hdl
 
 /**
- * 8-way Or: 
+ * 8-way Or:
  * out = (in[0] or in[1] or ... or in[7])
  */
 
+// COST = 7x3 = 21 NAND Gates
+
 CHIP Or8Way {
     IN in[8];
     OUT out;
 
     PARTS:
-    // Put your code here:
-}
+    Or(a=in[0], b=in[1], out=p);
+    Or(a=in[2], b=in[3], out=q);
+    Or(a=in[4], b=in[5], out=r);
+    Or(a=in[6], b=in[7], out=s);
+
+    Or(a=p, b=q, out=x);
+    Or(a=r, b=s, out=y);
+
+    Or(a=x, b=y, out=out);
+}

projects/01/Or8Way.out

@@ -0,0 +1,6 @@
+|     in     | out |
+|  00000000  |  0  |
+|  11111111  |  1  |
+|  00010000  |  1  |
+|  00000001  |  1  |
+|  00100110  |  1  |