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Article #7505Re: Mars Observer Update - 01/08/93
From: Steve Collins
Date: Mon, 11 Jan 1993 02:19
Date: Mon, 11 Jan 1993 02:19
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I turns out that the Mars Observer flight software and the new Mac OS
turned out to be almost identical in hex. The program can fulfill two
such different applications because the Mars Observer SCP (spacecraft
processor)
interprets the code as Mil-Std 1750A instructions instead of motorola
680x0 instructions. The the coincidence was the source of much amusement
when it was first discovered. It looks like the STAREX anomaly tiger team
might recommend code changes that would cause the two programs to differ
again, so we plan to continue our own development rather than waiting
for the next Apple update...
Steve Collins MO Spacecraft Team (AACS)
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Newsgroups: sci.space,sci.astro,alt.sci.planetary Path: arc1-ca.pugleaf.net!sparky!uunet!well!collins From: collins@well.sf.ca.us (Steve Collins) Subject: Re: Mars Observer Update - 01/08/93 Message-ID: <C0o3sz.IzG@well.sf.ca.us> Keywords: Mars Observer, JPL Sender: news@well.sf.ca.us Organization: Whole Earth 'Lectronic Link References: <9JAN199300533179@kelvin.jpl.nasa.gov> <1993Jan10.042812.25658@wuecl.wustl.edu> Date: Mon, 11 Jan 1993 02:19:47 GMT Lines: 14