1990, Rusel DeMaria, Nintendo Games Secrets, volume 3, illustrated edition, Prima Pub. and Communications, ISBN9781559580625, page 333:
To continue in a one-player game, press U and Start together. In a two-player game, both players press U and only player one presses Start.
1992 October 23, Shannon R. Adams <GRS00010@CONRAD.APPSTATE.EDU>, “Hints and Cheats for many [genesis] games”, in rec.games.video, Usenet, message-ID <1c842aINNgkl@lester.appstate.edu>:
As soon as the map screen appears, leave the plane out over the ocean and hold down Start. While holding it down, press A, B, C, B, A, A, B, C, B, A. Now release Start and use one of the following for the desired effect: [...]
1992, Corey Sandler, Ultimate Unauthorized Nintendo Classic Game Strategies, 2, illustrated edition, Random House Information Group, ISBN9780553561241, page 303:
Full Weapons: When the title screen stops scrolling, press Up, Up, Down, Down, Left, Right, Left, Right, B, A and Start. You can also do this trick by pressing Start to pause the game once underway.
2006, Alexander R. Galloway, Gaming: essays on algorithmic culture, illustrated edition, U of Minnesota Press, ISBN9780816648511, page 8:
Or in Berzerk, pressing Start is a nondiegetic act, whereas shooting robots is a diegetic act. Likewise, activating the Pause button in Max Payne is a nondiegetic act, but activating the slow-motion effect during a gunfight is a diegetic act.