don't modify data bus when accessing unknown address

diff --git a/galaxian/src/roms.v b/galaxian/src/roms.v
index ee71dc99ac8267c7d282b92320c84229721b1602..bdaf1306ab77f72c5d9bc7b669bb3f82bcb13087 100644 (file)
--- a/galaxian/src/roms.v
+++ b/galaxian/src/roms.v
@@ -125,7 +125,7 @@ begin
                DATA_OUT <= 8'h00;
        end
        else begin
-               DATA_OUT <= 8'h00;
+               DATA_OUT <= DATA_OUT;
        end
 end