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.

“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.