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Linux Journal: OSS in Space

Feb 17, 2004, 13:00 (0 Talkback[s])
(Other stories by Kaiwan N Billimoria)

"I recently read some interesting e-mails discussing the 1997 Mars Pathfinder mission. Yes, it's an old topic now; nonetheless, these e-mails are interesting reads.

"The first message, written by Mike Jones, describes the so-called software glitch that occurred on the Mars Pathfinder vehicle while it was on the surface of Mars and how the problem was solved. An authoritative follow-up message was penned by Glenn E Reeves, the software team leader from JPL for the Mars Pathfinder mission.

"To briefly summarize, a software priority inversion problem caused constant resets of the spacecraft's software. The problem finally was tracked down and solved by JPL's engineers with support from the software provider, Wind River. Yes, it ran VxWorks..."

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