The Atari XG-1 is an electronic light gun accessory manufactured by Atari Corporation. Released in 1987, it is compatible with the Atari 8-bit computers, Atari 7800, and Atari 2600. It was bundled with the Atari XEGS Deluxe home computer and video game console combination system,[1] and with the light gun game Bug Hunt for the 7800 as model XES2001 for US$34.95 1987. Atari eventually released five light gun games on the 7800 (Alien Brigade, Barnyard Blaster, Crossbow, Meltdown, and Sentinel) and one on the 2600 (Sentinel).
Hardware
The XG-1 is a specialized light pen. Generic light pen support was built into the Atari 8-bit home computers since its 1979 launch. The Atari 400/800 Hardware Technical Reference recommends a calibration procedure each time a light pen is used, so that the software can compensate for this offset for maximal accuracy. Bug Hunt and Barnyard Blaster for the XEGS each have unique hard-coded values.[2]