Lets play name that game; Who has a better memory than me?

Answer: Darned near everyone. I'm trying to locate a game I used to play on my cousin's computer back in the early 90s. The game is most likely older than this, but I can't say how much. (The only other games on this machine was Test Drive (#1) and some horrendous ASCII golf game) The game was a top-down dungeon style game (As in the location, rather than D&D or Zork association). The game used ASCII characters to build out the 'map' that you walked through using the arrow guys to guide your character, if memory serves an *, running into monsters and treasure and the like. I -think- the dungeon view only took up a portion of the screen, perhaps the right-half only, and your view was fairly limited to a "if you were in the dungeon this would be the extent of your eye line" sort of thing. Pretty nifty. Does this sound famaliar to anyone? A name would be great, a link would be disco, and source code would be fascinating. Thanks all for your hive-mind; JP