It's assembly code from here:
https://code.google.com/p/virtualagc/source/browse/?r=258#sv...The posters start with the code from BURN_BABY_BURN--MASTER_IGNITION_ROUTINE.s
I concatenated a number of files together and removed new lines, and runs of certain characters (space, #, and * for example). I felt that runs of the same character distracted the eye too much to keep. Those NASA engineers liked to make huge blocks of # characters.