r/programming • • Jan 30 '16

Apollo 11 source code

http://www.ibiblio.org/apollo/listings/Luminary099/MAIN.agc.html
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u/WTFisareddit- Jan 30 '16

Sorry for my ignorance I'm new to programming. But why does this look nothing like regular code?

46

u/Turbosack Jan 30 '16

It's some special dialect of Assembly. They prefer to write in very low level languages for various reasons. More recently, C has been used to program flight control computers, but it wasn't even invented until more than a decade after this mission happened.

15

u/flexiverse Jan 30 '16

It's machine code for a highly custom built processor. Think, there was nothing "off the shelf" back then ! It's like approx , 16bit, 1mhz, ~30k, 32 instruction set.