The SPACEX demo is a very simple space combat simulation.

To run SPACEX, type
	.EX SPACEX

Two ships will appear. "Player 1" is the left ship.

The ships can be maneuvered using the front panel switches
or the joysticks. For switches, each ship gets "left, right,
accelerate, fire" switches, with player one using switches
0-3 on the left, and player two using switches 8-11 on the
right.  Hopefully the joysticks are intuitive, with the red
button as "fire".

Hyperspace is requested by pulling back on the joystick, or by
requesting a right and left turn at the same time.

If a winner has been announced, strike any key on the console
to restart.

A Control-C character should be typed to exit back to the dot prompt.