Thanks! I just ordered Terminus
The name of the game is Elite, and I spent most of my 14th & 15th years playing it... never did get to Elite status though. I was at Deadly for a long time, then the return key on my C-128 broke, which made it somewhat difficult to load the game.
I did finish all the Navy missions though.
Now if only someone would do a version of The Sentry...
Right on Commander!