[jclevy]

Um, that was really a long time ago...

As I can remember, my approach was the first one: "bottom up in literally translating instructions and assuming it will lead to same results if translated accurately enough". That was not to difficult to achieve.

The funny thing was that Jordan Mechner used every bit of available memory in the Apple II computer, so I had to be very careful ;-)

Then the hard part: create the input and output codes that were totally different on the two computers, then the code for sounds and music also totally specific and then I wanted to have better graphics. So I ended up by creating a sprite editor, in assembly language, for my graphic artist colleague so that we can recreate all graphic assets and put color in it...