The Gravis Gamepad is a game controller produced by Advanced Gravis Computer Technology[?] similar to that used by the Sega or
Nintendo game systems. The Gamepad consists of a thumb-operated directional
pad and four buttons. Switches allow left- or right-handed operation and
autofire[?] capability. Compatible with all Amiga models, as well as the Atari ST line.
... in the form of a carbohydrate such as sugar, with the reaction being driven by ATP and NADPH. This ATP and NADPH is usually produced by the light reaction described above, ...