From 9542deeb483a00b6fabed7574720926ce97d7511 Mon Sep 17 00:00:00 2001
From: Frederick Yin <fkfd@fkfd.me>
Date: Tue, 16 Aug 2022 11:54:23 +0800
Subject: Projects, 01-06 completed

---
 projects/02/Inc16.hdl | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 projects/02/Inc16.hdl

(limited to 'projects/02/Inc16.hdl')

diff --git a/projects/02/Inc16.hdl b/projects/02/Inc16.hdl
new file mode 100644
index 0000000..6b27473
--- /dev/null
+++ b/projects/02/Inc16.hdl
@@ -0,0 +1,32 @@
+// 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/02/Inc16.hdl
+
+/**
+ * 16-bit incrementer:
+ * out = in + 1 (arithmetic addition)
+ */
+
+CHIP Inc16 {
+    IN in[16];
+    OUT out[16];
+
+    PARTS:
+    Not(in=in[0], out=out[0]);
+    HalfAdder(a=in[1], b=in[0], sum=out[1], carry=c1);
+    HalfAdder(a=in[2], b=c1, sum=out[2], carry=c2);
+    HalfAdder(a=in[3], b=c2, sum=out[3], carry=c3);
+    HalfAdder(a=in[4], b=c3, sum=out[4], carry=c4);
+    HalfAdder(a=in[5], b=c4, sum=out[5], carry=c5);
+    HalfAdder(a=in[6], b=c5, sum=out[6], carry=c6);
+    HalfAdder(a=in[7], b=c6, sum=out[7], carry=c7);
+    HalfAdder(a=in[8], b=c7, sum=out[8], carry=c8);
+    HalfAdder(a=in[9], b=c8, sum=out[9], carry=c9);
+    HalfAdder(a=in[10], b=c9, sum=out[10], carry=c10);
+    HalfAdder(a=in[11], b=c10, sum=out[11], carry=c11);
+    HalfAdder(a=in[12], b=c11, sum=out[12], carry=c12);
+    HalfAdder(a=in[13], b=c12, sum=out[13], carry=c13);
+    HalfAdder(a=in[14], b=c13, sum=out[14], carry=c14);
+    HalfAdder(a=in[15], b=c14, sum=out[15], carry=c15);
+}
-- 
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