Choplifter 1-4-84

 

This version is very close to final.  The only real noticeable differences are that this version lacks the opening demo and the copyright says 1983 instead of 1984.  Interestingly this demo is actually something new that Atari decided to add (at the last minute apparently) as the original Broderbund version has no demo. 

Thanks to some code examination by AA member Kr0tki, it was discovered that this proto still uses the two-chip 16K cartridge design instead of the one-chip 16K cartridge design that the final uses.  This means that in this prototype all the ROM addresses are in the $6000-$9FFF range instead of $8000-$BFFF.  This of course cannot be seen in any of the gameplay.

 

Prototype Differences
The Copyright says 1983 instead of 1984

There is no opening demo
When pressing reset the game goes back to the 5200 splash screen instead of the game title screen
The word Choplifter! is off center on the splash screen.
The prototype does not work on the two port version of the 5200 BIOS
The prototype uses the two chip 16K cartridge design instead of the one chip design

 

Notice how the title is off center a bit?  The C is over the R instead of the I.

 

That little helicopter is going to sit there all day...

 

You're welcome!

Oops! My bad!

 

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