From 6c109081ba11c1ef4b33ed922cbd447b6fe96b29 Mon Sep 17 00:00:00 2001
From: uvok
Date: Fri, 2 Jan 2026 12:21:06 +0100
Subject: Fix verilator multi-module warning

---
 nandgame/arith_unit.sv | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'nandgame/arith_unit.sv')

diff --git a/nandgame/arith_unit.sv b/nandgame/arith_unit.sv
index b85d6d6..e0254aa 100644
--- a/nandgame/arith_unit.sv
+++ b/nandgame/arith_unit.sv
@@ -4,6 +4,9 @@
 
 `include "nandgame_types.v"
 
+`ifndef NANDGAME_ARU
+`define NANDGAME_ARU
+
 module  arith_unit #(
   parameter DATA_WIDTH = 16
 ) (
@@ -25,3 +28,5 @@ always_comb begin
 end
 
 endmodule
+
+`endif
-- 
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