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Popeye 7-20-83This prototype is very very close to the final version.
In fact it only differs by 4 bytes! These bytes control
the number of scanlines displayed (269 vs 267 in the final) and
the address of a jmp instruction that's called when the game
ends. In the final NTSC version when the game ends the jmp
instruction jumps into the middle of another instruction which
shouldn't happen, but amazingly doesn't crash the game. In
this prototype the jmp goes to the correct address (as it does
in the PAL version). Why this change was made is unknown,
but it may have been a bug that was accidentally
introduced. This particular prototype was found on a disk of source code
obtained from the programmer.
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