3 ms·

Jack Garman had hand-written down all the trouble codes on a "cheat sheet". He's the one who called "go". I am not even sure if the MIT software team knew what

Jack Garman had hand-written down all the trouble codes on a "cheat sheet". He's the one who called "go". I am not even sure if the MIT software team knew what 1201 and 1202 were. The AGC was one of the first to use priority multitasking. The 1201 and 1201 faults were indication that lower priority tasks were getting yanked. See "Moon Machines". Seriously.

dm2 12y ago
What would be an example of a lower-priority task in this situation? A couple of links to the videos you mentioned: http://www.sciencechannel.com/video-topics/space-videos/moon-machines.htm http://www.sciencechannel.com/video-topics/space-videos/moon... The above is probably one of the most informative 2 minute videos I've ever seen. https://www.youtube.com/watch?v=DWcITjqZtpU&list=PL7E69228169F0FA1B https://www.youtube.com/watch?v=DWcITjqZtpU&list=PL7E6922816... "there were no specs, we made it up" "if you screwed up you got a stack of papers that was 2 feet thick" "the overall memory for the Apollo guidance computer was 72 kilobytes" https://www.youtube.com/channel/UClDdlBdSzrWIUijnnUDXobw https://www.youtube.com/channel/UClDdlBdSzrWIUijnnUDXobw https://www.youtube.com/channel/UCNpdHqZ5OmFOnICpZz4Mflw https://www.youtube.com/channel/UCNpdHqZ5OmFOnICpZz4Mflw
- ArkyBeagle 12y ago
  Oops - display and keypad. See above :)
- XorNot 12y ago
  Clicked into the first one and got a thing about the insulation between the tanks - the 3rd video in the playlist was about them hiring surfboard makers to do the honeycomb insulation between the fuel tanks, since they had more experience working with the materials in the heat conditions. Just another kind of "the space program was amazing" thing - the sheer diversity of people who got hired on to contribute is continually surprising. An amazing tribute to the pragmatism of NASA under the conditions.
ArkyBeagle 12y ago
Display and keypad as I recall. The problem was actually a deployment problem. The checklist for configuring the computer left a diagnostic mode on that sucked up a lot of CPU.

dm2 12y ago

What would be an example of a lower-priority task in this situation? A couple of links to the videos you mentioned: http://www.sciencechannel.com/video-topics/space-videos/moon-machines.htm http://www.sciencechannel.com/video-topics/space-videos/moon... The above is probably one of the most informative 2 minute videos I've ever seen. https://www.youtube.com/watch?v=DWcITjqZtpU&list=PL7E69228169F0FA1B https://www.youtube.com/watch?v=DWcITjqZtpU&list=PL7E6922816... "there were no specs, we made it up" "if you screwed up you got a stack of papers that was 2 feet thick" "the overall memory for the Apollo guidance computer was 72 kilobytes" https://www.youtube.com/channel/UClDdlBdSzrWIUijnnUDXobw https://www.youtube.com/channel/UClDdlBdSzrWIUijnnUDXobw https://www.youtube.com/channel/UCNpdHqZ5OmFOnICpZz4Mflw https://www.youtube.com/channel/UCNpdHqZ5OmFOnICpZz4Mflw

ArkyBeagle 12y ago
Oops - display and keypad. See above :)
XorNot 12y ago
Clicked into the first one and got a thing about the insulation between the tanks - the 3rd video in the playlist was about them hiring surfboard makers to do the honeycomb insulation between the fuel tanks, since they had more experience working with the materials in the heat conditions. Just another kind of "the space program was amazing" thing - the sheer diversity of people who got hired on to contribute is continually surprising. An amazing tribute to the pragmatism of NASA under the conditions.

ArkyBeagle 12y ago

Display and keypad as I recall. The problem was actually a deployment problem. The checklist for configuring the computer left a diagnostic mode on that sucked up a lot of CPU.