Did not realize it was "very old". I just now became aware that version 0.74 came out...thus making my 0.73 version so ancient. Also, as I said before, the game WAS running fine with the version I had been using but suddenly now this one in game key command to bring up the auto-map no longer works.
I take it this is not a common issue with any known probable reasons or solutions then...? I will try updating DosBox to the new .74 version and see if that helps. I tried to download and install the "DBGL" frontend from this forum but using that thing is like trying to patch an old game to run in Windows XP without the source code or something.
Thanks you both for trying to help me here BTW. I know us 'noobs' who are no anxious to put in the time and effort to figure out all the ins and outs of Dosbox are probably a bother at times...
I will continue to check back in here just in case.