Apollo 12 Source Code: Looking at the original flown code printout, and the 1202 error fix
Mike Stewart recently acquired an original source code listing of Apollo 12, that he had been working on for years. In this longish video, he gives us a glimpse of what's inside, including the software fix for the infamous 1202 errors that had plagued the Apollo 11 landing.
0:00 How we got the Apollo listings
2:45 How to read the assembly listings
16:50 Landing on the Moon with the P66 program
18:15 1202 error fix code added after Apollo 11
24:27 Version control in the 1960's
The scan of the listing has been made available to all right here, thanks to Mike's dedication and the Internet Archive:
https://archive.org/details/luminary1...
The clean, hand-recovered, checked and known-to-recompile code derived from this listing is available here, also the master work of Mike Stewart:
https://www.ibiblio.org/apollo/listin...
Here is a link to the installation instructions of the unmodified Orbiter/NASSP software, which flies with the original code:
https://www.orbiter-forum.com/showthr...
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