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This is an article about reverse-engineering the 1983 arcade classic Sinistar. Sinistar is one of the most technically-impressive arcade games of the 1980s, and one of the first to use voice samples. The game is notoriously difficult, and the author, SynaMax, wanted to rebuild the game with an easier difficulty, and also restore stereo sound.
Since the original assembler for Sinistar is considered lost, SynaMax re-wrote the source code to target the Macro Assembler. One of their accomplishments was restoring the original title screen for Sinistar (see above) from the 1982 prototype release.