Weird typing problem in police quest 3
 

I'm using DosBox to run Police Quest 3 but I seem to experience some typing problems in the save game screen.Though there's nothing wrong with my keyboard (obviously),I only managed to save one game.The next time I opened the save game screen and tried to type in a name for the sav,nothing happened!The only thing I can do is use the one game I've already saved over and over again.Essentially,I'm stuck with only one save slot!
Funny problem,I know, but any help is welcome!

Disregard the latter
 

Problem seemed solved after quiting and reloading,but for only about a couple of saves.After that,it reemerged.Anyway,it seems to be nothing that can't be handled by quiting and reloading,so I don't think I'll be needing any help.Thanks though...