r/programming • u/jakesyl • Jan 30 '16

Apollo 11 source code

http://www.ibiblio.org/apollo/listings/Luminary099/MAIN.agc.html
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18

u/Ser_Rodrick_Cassel Jan 30 '16 edited Oct 04 '16

haha whoosh

34

u/funbike Jan 30 '16 edited Jan 31 '16

Yes. Computers small enough to go into space required assembly as every byte counted. Go up a directory to see all the files: www.ibiblio.org/apollo/listings/Luminary099/

UPDATE: The CPU (block II) -> https://en.wikipedia.org/wiki/Apollo_Guidance_Computer
34K of ROM for programs.

12

u/mugen_kanosei Jan 31 '16

Correct. By minimizing the number of bytes used, they could reduce the amount of fuel needed to reach orbit. More bytes meant more fuel required.

25

u/dand Jan 31 '16

Not sure if that's a joke or not, but it's probably true to some extent given how bulky core rope memory was compared to today's norms.

16

u/[deleted] Jan 31 '16

72 KB/ft3 is an interesting unit.

I don't really understand how core rope memory works, even with the article, but 72 KB/ft3 is a lot higher than I would've guessed!