Montezuma's Revenge: levels 1-6

Here I play my favourite game: Montezuma's Revenge (Atari 800XL version) on a MacOS emulator. In former times I did not suck like because of using a real joystick, maybe because I used to play the C64 version (which however looks pretty much identical)...maybe because I was *way* younger! Anyway, pretty decent performance given that I haven't been playing this game (on an emulator) for something like 15 years :)