add nor

cpu/src/alu/utils.mj

@@ -121,7 +121,9 @@ not_n<n>(a:[n]) = (o:[n]) where
   end if
 end where
 
-
+nor_ALU(a:[32], b:[32]) = (o:[32]) where
+	o = not_n<32>(or_ALU(a, b));
+end where
 
 (* ------------------------------------------------------------------------- *)
 (*Opérations arithmétiques *)