Looking for Apple II game

[tron.thomas@verizon.net (Tron Thomas)]

I remember playing a game on the Apple II when I was in high school. 
The game was in monochrome high resolution graphics mode.
I don't remember all the details of the game, but I believe it was a
two player game where each player had a stationary cannon they could
aim and fire.  The goal was to hit and destroy the other persons
cannon or something like that.

Does anyone remember this game, what it's name is and where I could
obtain it on the internet in a format that will run on the Catakig
emulator?