In March 1984,
Sega Enterprises Ltd. was purchased by its former
CEO,
David Rosen, along with a group of backers.
Hayao Nakayama, one of these backers, was named the new CEO of Sega. Following the crash of the arcade industry, Nakayama decided to focus development efforts on the
home console market. To get around licensing, Accolade chose to seek an alternative way to bring their games to the Genesis by purchasing a console in order to decompile the
executable code of three Genesis games and use it to program their new cartridges in a way that would allow them to disable the security lockouts that prevented playing of unlicensed games. As a result of the piracy and unlicensed development issues, Sega incorporated a technical protection mechanism into a new edition of the Genesis released in 1991, referred to as the Genesis III. This new variation of the Genesis included code known as the Trademark Security System (TMSS), which, when a game cartridge was inserted into the console, would check for the presence of the
string "SEGA" at a particular point in the memory contained in the cartridge. If and only if the string was present, the console would run the game, and would briefly display the message: "Produced by or under license from Sega Enterprises LTD." This system had a twofold effect: it added extra protection against unlicensed developers and software piracy, and it forced the Sega trademark to display when the game was powered up, making a lawsuit for trademark infringement possible if unlicensed software were to be developed. Accolade learned of this development at the
Winter Consumer Electronics Show in January 1991, at which Sega showed the new Genesis III and demonstrated it screening and rejecting an
Ishido game cartridge. With more games planned for the following year, Accolade successfully identified the TMSS code. They later added this code to the games
HardBall!,
Star Control,
Mike Ditka Power Football, and
Turrican. ==Lawsuit==