1 files changed, 16 insertions, 0 deletions
diff --git a/cpu/alu.ml b/cpu/alu.ml
new file mode 100644
index 0000000..0a0c00f
--- /dev/null
+++ b/cpu/alu.ml
@@ -0,0 +1,16 @@
+open Netlist_gen
+
+let fulladder a b c =
+       let s = a ^^ b ^^ c in
+       let r = (a ^& b) ^| ((a ^^ b) ^& c) in
+       s, r
+
+let rec nadder n a b c_in =
+    if n = 1 then fulladder a b c_in
+    else 
+        let s_n, c_n1 = fulladder (a ** 0) (b ** 0) c_in in
+        let s_n1, c_out = nadder (n-1) (a % (1, n-1)) (b % (1, n-1)) c_n1 in
+        s_n ++ s_n1, c_out
+
+
+