Comment on Voyager 1
FlatFootFox@lemmy.world 6 months ago
I still cannot believe NASA managed to re-establish a connection with Voyager 1.
That scene from The Martian where JPL had a hardware copy of Pathfinder on Earth? That’s not apocryphal. NASA keeps a lot of engineering models around for a variety of purposes including this sort of hardware troubleshooting.
It’s a practice they started after Voyager. They shot that patch off into space based off of old documentation, blueprints, and internal memos.
To add to the metal, the blueprints include the blueprints for the processor.
hackaday.com/2024/05/…/the-computers-of-voyager/
They don’t use a microprocessor like anything today would, but a pile of chips that provide things like logic gates and counters. A grown up version of gigatron.io
That means “written in assembly” means “written in a bespoke assembly dialect that we maybe didn’t document very well, or the hardware it ran on, which was also bespoke”.
They also released the source code of the Apollo 11 guidance computer. So if you want to fly to the moon, here is one part of how to do it.
Nice, now I just need a rocket and launchpad! Craigslist?
Commission one on fiverr or etsy.
I realize the Voyager project may not be super well funded today (how is it funded, just general NASA funds now?), just wondering what they have hardware-wise (or ever had). Certainly the Voyager system had to have precursors (versions)?
Or do they have a simulator of it today - we’re talking about early 70’s hardware, should be fairly straightforward to replicate in software? Perhaps some independent geeks have done this for fun? (I’ve read of some old hardware such as 8088 being replicated in software because some geeks just like doing things like that).
I have no idea how NASA functions with old projects like this, and I’m surely not saying I have better ideas - they’ve probably thought of a million more ways to validate what they’re doing.
Probably brought in some of the original guys for one last job.
takes long drag off cigarette “I’m too old for this shit”
You sure? The smell off some of the corpses will have been terrible.
I’m not saying they’re all dead, but an intern at the time of launch would now be 70. Anybody who actually designed anything is… Well… The odds of them still being around are low.
I have a uncle who worked on Apollo writing machine code, and he is a spry, clear-headed 80-something-year-old.
IIRC, they did pull in a guy who had just started his career on the project.
do I hear heist movie?
They apparently didn’t have an emulator. The first thing I’d have done when working on a solution would have been to build one, but they seem to have pulled it off without.
There is an fascinating documentary about the team that sends the commands to Voyager 1 and 2 called It’s Quieter in the Twilight
100% they’ve got an emulator, they’ve had dedicated test environments since the moon landing for emulating disaster recovery scenarios since the moon landings, they’ve likely got at least one functioning hardware replica and very likely can spin up a hardware emulation as a virtual machine at will.
Source: I made this up, but I have a good understanding of systems admin and have a interest in space stuff so I’m pretty confident they would have this stuff at bare minimum
That’s my assumption too, but we’re talking about a different era, and I really have no idea how they approached validation and test/troubleshooting.
I’ve seen some test environments for manned missions, but that’s really for humans to validate what they’re doing.
V’ger was quick 'n dirty by comparison (with no criticism of the process or folks involved…they had one chance to get these missions out there).
nxdefiant@startrek.website 6 months ago
Imagine scrolling back in the Slack chat 50 years to find that one thing someone said about how the chip bypass worked.
xantoxis@lemmy.world 6 months ago
Imagine any internet company lasting 50 years.
jaybone@lemmy.world 6 months ago
This is why slack is bullshit. And discord. We should all go back to email. It can be stored and archived and organized and get off my lawn.
Artyom@lemm.ee 6 months ago
It’s not Slack’s fault. It is a good platform for one-off messages. Need a useless bureaucratic form signed? Slack. Need your boss to okay the afternoon off? Slack. Need to ask your lead programmer which data structure you should use and why they’re set up that way? Sounds like the answer should be put in a wiki page, not slack.
All workflows are small components of a larger workplace. Emails also suck for a lot of things. They probably wouldn’t have worked in this case, memos are the logical upgrade from emails where you want to make sure everyone receives it and the topic is not up for further discussion.
deweydecibel@lemmy.world 6 months ago
I mean, unironically, yeah.
It’s not even that we need to go back to email. The problem isn’t moving on from outdated forms of communication, it’s that the technology being pushed as a replacement for it is throwing out the baby with the bathwater.
Which is to say nothing of the fact that all of these new platforms are proprietary, walled off, and in some cases don’t make controlling the data easy if you’re not hosting it (and their searches are trash).
militaryintelligence@lemmy.world 6 months ago
Even then, you get banned from Google for some reason, what then?
SomethingBurger@jlai.lu 6 months ago
Microsoft is 49.
xantoxis@lemmy.world 6 months ago
Yeah. Technically I’m not talking about Microsoft, as their primary product is the OS and they are not purely Internet-based. IBM, of course, is much older than that and also has some Internet products, as does every software company.
In my statement “Internet company” means a company whose only product is SaaS on the Internet; i.e. someone who, if they went away, their product would disappear with them.
imgcat@lemmy.ml 6 months ago
And most microsoft products surely can run 50 years with no glitches.
noodlejetski@lemm.ee 6 months ago
fingers crossed!
MrSpArkle@lemmy.ca 6 months ago
They were a software for decades before they became an “internet company”.
nxdefiant@startrek.website 6 months ago
IBM is 100, but the Internet didn’t exist in 1924, so we’ll say the clock starts in 1989. I’m pretty sure at least MS or IBM will be around in 15 years.
jaybone@lemmy.world 6 months ago
What does IBM even do anymore? I’m guessing they just support all of their legacy products that customers are locked into.