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Voyager Status, What is it?
tuvas
post Dec 6 2006, 05:48 AM
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Anyone know the latest Voyager status? I've hear rumors, but I'm wondering if anyone has anything more concrete (I won't share the rumors, as I really don't know much about it, so...)
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stevesliva
post Feb 8 2024, 07:37 PM
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That FDS history is better than anything else I found a few weeks back. And James Wooddell might be unhappy to hear them say that so many people of import have passed. It appears that he might be turning 91 before the month is out. The text cites a graduate paper from USC in 1974 as having a lot of documentation on the architecture.

That text does make it clear that the bigger issue is... what's the software on there, and if a bit's become stuck, what do you do about it. There, Edgar Blizzard is (maybe) 89. Richard Rice is a more generic name, but I can't see that he's necessarily passed, either.

I did sort of glean that the "registers" might simply be specific words in the memory, and "bad register" might be what means the other FDS was abandoned. Which might make a bad bit in a register harder to work around vs. like it was in a specific word of instruction memory like in the hard error in 1985. Yes, there are other registers, but rewriting that much of the code...

Oh, and it says a full FDS software load took 4hrs in 1984, which was then considered real slow because of lower bandwidth.
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- tuvas   Voyager Status   Dec 6 2006, 05:48 AM
- - stevesliva   That FDS history is better than anything else I fo...   Feb 8 2024, 07:37 PM
|- - Floyd   QUOTE (stevesliva @ Feb 8 2024, 02:37 PM)...   Feb 9 2024, 01:01 AM
- - mcaplinger   I'm not sure why you take issue with the simpl...   Feb 8 2024, 08:06 PM
- - stevesliva   Oh, I'm not taking any truck with it, just won...   Feb 8 2024, 10:31 PM
- - mcaplinger   The Voyager FDS was designed several years before ...   Feb 9 2024, 02:45 AM
|- - stevesliva   What I gathered from Ars was simply that they...   Feb 9 2024, 06:39 AM
|- - mcaplinger   QUOTE (stevesliva @ Feb 8 2024, 10:39 PM)...   Feb 9 2024, 04:09 PM
- - Doug M.   So, does anyone have a prognosis here? How likely...   Feb 18 2024, 10:51 AM
|- - MahFL   QUOTE (Doug M. @ Feb 18 2024, 10:51 AM) S...   Feb 18 2024, 06:55 PM
|- - mcaplinger   QUOTE (Doug M. @ Feb 18 2024, 02:51 AM) S...   Feb 18 2024, 07:20 PM
- - Doug M.   I wrote a post on the situation here: https://cro...   Feb 21 2024, 06:48 PM
- - mcaplinger   Nice post, but I feel compelled to nit-pick a litt...   Feb 21 2024, 08:55 PM
|- - Tom Tamlyn   What about the Pathfinder models that JPL occasion...   Feb 21 2024, 11:31 PM
||- - mcaplinger   QUOTE (Tom Tamlyn @ Feb 21 2024, 03:31 PM...   Feb 21 2024, 11:55 PM
||- - Tom Tamlyn   <groan> Naturally I meant to refer to the S...   Feb 22 2024, 12:37 AM
|- - Doug M.   QUOTE (mcaplinger @ Feb 21 2024, 09:55 PM...   Feb 22 2024, 02:06 PM
|- - mcaplinger   QUOTE (Doug M. @ Feb 22 2024, 06:06 AM) A...   Feb 22 2024, 02:43 PM
|- - HSchirmer   QUOTE (mcaplinger)You want to bet on the chances o...   Feb 22 2024, 07:23 PM
|- - stevesliva   QUOTE (mcaplinger @ Feb 22 2024, 09:43 AM...   Feb 22 2024, 10:18 PM
- - djellison   The only flight-like rover testbeds in the wild ar...   Feb 22 2024, 02:48 AM
- - Floyd   mcaplinger the PDF you linked is amazing reading. ...   Feb 22 2024, 06:17 PM
- - mcaplinger   It might still be garbage (probably is), but DSS-6...   Feb 27 2024, 03:38 AM
- - stevesliva   NPR had some more color on this, yesterday: https:...   Mar 7 2024, 04:28 PM
- - climber   It looks like we have encouraging progress (sorry ...   Mar 11 2024, 11:17 AM
|- - Tom Tamlyn   From the article: "Today, the Voyager team co...   Mar 13 2024, 09:16 PM
|- - mcaplinger   QUOTE (Tom Tamlyn @ Mar 13 2024, 02:16 PM...   Mar 13 2024, 09:57 PM
- - deedan06   Well they still need a permanent team to deal with...   Mar 13 2024, 10:02 PM
- - mcaplinger   Voyager costs $5-7M per year according to the...   Mar 13 2024, 10:21 PM
- - djellison   Also it's worth noting - the phrase " 12 ...   Mar 13 2024, 10:45 PM
- - Tom Tamlyn   QUOTE (djellison @ Mar 13 2024, 05:45 PM)...   Mar 14 2024, 12:00 AM
- - Bernard1963   Well, this is looking more hopeful than I was expe...   Mar 14 2024, 12:36 AM
- - Explorer1   There's a 2022 documentary about the team that...   Mar 14 2024, 02:36 AM
|- - mcaplinger   QUOTE (Explorer1 @ Mar 13 2024, 07:36 PM)...   Mar 14 2024, 04:32 PM
- - Bernard1963   I gather a bare bones version of the FDS software ...   Mar 14 2024, 09:22 AM
- - Floyd   In some old computer languages, the peek command w...   Mar 14 2024, 06:03 PM
- - Tom Tamlyn   Thanks Explorer1 for suggesting It's Quieter i...   Mar 14 2024, 06:46 PM
|- - stevesliva   My speculation is that the "dump memory...   Mar 14 2024, 08:04 PM
- - Bernard1963   QUOTE (mcaplinger @ Mar 14 2024, 04:32 PM...   Mar 16 2024, 12:45 AM
|- - mcaplinger   QUOTE (Bernard1963 @ Mar 15 2024, 05:45 P...   Mar 16 2024, 03:20 AM
- - Bernard1963   QUOTE (mcaplinger @ Mar 16 2024, 03:20 AM...   Mar 20 2024, 11:50 PM
- - stevesliva   Media reports of a DSN engineer having a eureka mo...   Mar 21 2024, 12:22 AM
- - Bernard1963   Going by the latest SFOS this looks very hopeful. ...   Mar 31 2024, 12:41 PM
- - Bernard1963   Thought I'd post an update as clearly Voyager ...   Apr 3 2024, 09:52 AM
- - stevesliva   This makes me wonder if the "died in 1981...   Apr 3 2024, 01:37 PM
- - stevesliva   https://blogs.nasa.gov/voyager/2024/04/04/e...ng-o...   Apr 5 2024, 05:32 PM
- - climber   We’re back !   Apr 22 2024, 05:49 PM
- - Explorer1   Very impressive work! Congratulations! ht...   Apr 22 2024, 07:21 PM
- - Tom Tamlyn   Maybe you meant to post the link to today's bl...   Apr 23 2024, 03:39 AM
- - Explorer1   Yes, I did. Incredible to think that they both mi...   Apr 23 2024, 01:25 PM
- - climber   Just learnt that Voyager I will be 1 light day fro...   Apr 23 2024, 06:13 PM
- - Bernard1963   Voyager 1 remains in engineering mode but it looks...   May 16 2024, 08:29 PM
- - climber   Here we go : https://blogs.nasa.gov/voyager/2024/0...   May 22 2024, 09:35 PM
- - Floyd   Ed Stone, Former Director of JPL and Voyager Proje...   Jun 12 2024, 09:16 PM
- - deedan06   So the machine has now officially outlived the man...   Jun 13 2024, 08:35 PM
- - Tom Tamlyn   The New York Times has put up its obituary for Ed ...   Jun 15 2024, 08:09 PM
- - Floyd   Tom, many thanks for posting that and the links. ...   Jun 15 2024, 10:01 PM
|- - Explorer1   QUOTE (Floyd @ Jun 15 2024, 05:01 PM) Tom...   Jun 15 2024, 10:20 PM
- - Explorer1   A detailed article on the anomaly and the rescue.   Aug 21 2024, 03:19 PM
- - stevesliva   Everyone interested in the details needs to read t...   Aug 22 2024, 04:44 AM
- - Roby72   In the last days I checked via DSNOW that V1 was a...   Aug 31 2024, 03:49 PM
- - Bernard1963   Yes I had also noticed Voyager 1 had been in engin...   Sep 11 2024, 03:10 AM
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