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This contains more technical information behind the 1202 alarms [0]. It is an awesome read. [0] https://www.hq.nasa.gov/alsj/a11/a11.1201-pa.html https://www.h

• SmileyRedBall 7y ago
  > This contains more technical information behind the 1202 alarms .. “You also have to remember that, long before Bill Gates, we had developed a real-time multi-tasking operating system.” “When a job was to be scheduled, a call would be made to the appropriate executive routine - sort of like a DOS call today” edit: I thought this was hysterical, on so many levels, just imagine the scenario if Microsoft had got the contract for the AGC.
• sytelus 7y ago
  Relevant text: So what was happening during Apollo 11, as I recall, was that repeated jobs to process rendezvous radar data (that of course were not really there) were scheduled because a misconfiguration of the radar switches. Thus, the core sets got filled up and a 1202 alarm was generated. The 1201 that came later in the landing was because the scheduling request that caused the actual overflow was one that had requested a VAC area. Quite fascinating that these alarms automatically rebooted computer and picked up essential jobs exactly where they had left off.