вот (вроде эта игра) дизасм с подробными комментами
https://gist.github.com/1wErt3r/4048722
rom`ка оказывается всего 32Kb, графика в другой 8Kb
" you would see just three chips on board labeled "PRG" and "CHR" (and a third, the lockout chip). What you see above is the entire 32KB contents of the "PRG" chip - PRoGram code and data like levels, music, etc. Not included is the 8KB CHR - CHaRacter data, the appearance of tiles and sprites."
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