Introducing the FireFly!
The FireFly is a simple device designed to remap the joystick's UP and FIRE button. In normal operation mode your joystick will function as normal. When the FireFly is engaged the FIRE button becomes UP and UP becomes FIRE! Very handy for games that use up to jump.
The swap can be done and any moment on the "FLY" so it does very little to interfere with normal game play!
Demo Video HERE