diff --git a/src/mame/drivers/midyunit.c b/src/mame/drivers/midyunit.c
index 3325bcf75fa..8e33a10d5f6 100644
--- a/src/mame/drivers/midyunit.c
+++ b/src/mame/drivers/midyunit.c
@@ -26,6 +26,7 @@
     Notes:
         * Super Hi Impact Proto V4.0: You need to at least reset the high score
             table from the UTILITIES menu.  It's best to do a FULL FACTORY RESTORE
+        * Known to exist, but not dumped Terminator 2 LA4 (8/3/92)
 
 
 Super High Impact