darthgently Posted April 12 Share Posted April 12 1 minute ago, Nuke said: best tape decks in the known universe. i think the real solution is to remap the tx buffer into an unused memory location. since there are a lot of systems you can no longer use due to lack of power, and other failures. if some of those have memory mapped i/o, you mighty be able to use that memory space for a new buffer. while this is trivial to do in asm, there just isnt any hardware you can test and verify this earth side. Oh, dang, I didn't catch that it was specifically the tx buffer. Yeah, that seems viable Quote Link to comment Share on other sites More sharing options...
Nuke Posted April 12 Share Posted April 12 (edited) 12 minutes ago, darthgently said: Oh, dang, I didn't catch that it was specifically the tx buffer. Yeah, that seems viable im remembering an article i read a week ago so it may not specifically be the tx buffer. voyager's memory has fared better than mine. looks like its not a tx buffer proper but an intermediate buffer for formatting the data for transmission. still something you can address to an unused block. Edited April 12 by Nuke Quote Link to comment Share on other sites More sharing options...
magnemoe Posted April 12 Share Posted April 12 16 hours ago, Nuke said: best tape decks in the known universe. i think the real solution is to remap the tx buffer into an unused memory location. since there are a lot of systems you can no longer use due to lack of power, and other failures. if some of those have memory mapped i/o, you mighty be able to use that memory space for a new buffer. while this is trivial to do in asm, there just isnt any hardware you can test and verify this earth side. They don't have an stationary Voyager probe? Pretty sure everything newer has the computer in some NASA or other agency storage. For an rover you want the physical rover and the computer. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted April 12 Share Posted April 12 A voodoo probe. You are trying the needles, and watching its reactions by telemetry. Much faster than light. Quote Link to comment Share on other sites More sharing options...
PakledHostage Posted April 12 Share Posted April 12 5 hours ago, magnemoe said: They don't have an stationary Voyager probe? Pretty sure everything newer has the computer in some NASA or other agency storage. For an rover you want the physical rover and the computer. That's the thing. They would need to have something. They're not going to write new code and upload it without testing it on the ground first. Maybe they don't have actual hardware for all of it, but I suspect they at least have the core equipment. Or maybe they have a virtual machine Voyager that they can test on? The VM would have to be very high fidelity in order to serve as a meaningful test platform, so maybe they even have both a VM and a hardware reference system? (i.e. do the initial development and testing with the VM and then do the final testing on the reference hardware.) I'd sure be interested to know. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted April 13 Share Posted April 13 (edited) It's launched 47 ya. The midget pilot on board is about 70 yo. Age matters. His reaction and coordination are not the same like in youth. Edited April 13 by kerbiloid Quote Link to comment Share on other sites More sharing options...
darthgently Posted April 13 Share Posted April 13 3 hours ago, kerbiloid said: The midget pilot on board is about 70 yo. Age matters. Midget? Not for a Kerbal. Age does not matter either. Get your facts right Quote Link to comment Share on other sites More sharing options...
Nuke Posted April 13 Share Posted April 13 im starting to like the whole disembodied brain thing. rocket science and brain surgery together at last. Quote Link to comment Share on other sites More sharing options...
Shpaget Posted April 14 Share Posted April 14 On 4/11/2024 at 10:50 PM, darthgently said: Voyagers use tape for secondary storage. And V1's tape is still working? Amazing! To be fair, tape is still number one choice for data archiving. That being said, archiving != usage. That tape is being constantly used. It is amazing that it didn't fall apart from purely mechanical manipulation. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted April 15 Share Posted April 15 Another evidence of the pilot onboard. He has iron and duct tape, Quote Link to comment Share on other sites More sharing options...
darthgently Posted April 15 Share Posted April 15 17 hours ago, Shpaget said: That being said, archiving != usage. That tape is being constantly used. It is amazing that it didn't fall apart from purely mechanical manipulation. And in those temperatures at that. Not your typical '70s materials in the tape. Amazing Quote Link to comment Share on other sites More sharing options...
PakledHostage Posted April 15 Share Posted April 15 7 hours ago, darthgently said: Not your typical '70s materials in the tape. So no bell-bottomed polyester tape in Voyager? Quote Link to comment Share on other sites More sharing options...
adsii1970 Posted April 15 Share Posted April 15 @Minmus Taster, there's still some hope for Voyager I. But we know eventually, the hardware will be unworkable and unsalvageable from here. Time and environment are the enemies of anything. https://www.msn.com/en-us/news/technology/nasa-tries-to-jog-voyager-1-s-memory-from-15-billion-miles-away/ar-BB1lESkx Quote Link to comment Share on other sites More sharing options...
darthgently Posted April 15 Share Posted April 15 4 hours ago, PakledHostage said: So no bell-bottomed polyester tape in Voyager? Wouldn't it be the greatest punchline if the tape system in V1 turned out to be basically Sony BetaMax? It was a better standard. Oh, wait, that's right, no politics or religion ... Quote Link to comment Share on other sites More sharing options...
adsii1970 Posted April 15 Share Posted April 15 20 minutes ago, darthgently said: Oh, wait, that's right, no politics or religion ... I am old enough to remember the Betamax recorders. That's not politics or religion; it's just a fact. What did them in was the recordable cassettes were more expensive than the VHS ones. Those suckers, even in the 1980s, were not cheap! Quote Link to comment Share on other sites More sharing options...
magnemoe Posted April 17 Share Posted April 17 On 4/15/2024 at 10:15 PM, adsii1970 said: I am old enough to remember the Betamax recorders. That's not politics or religion; it's just a fact. What did them in was the recordable cassettes were more expensive than the VHS ones. Those suckers, even in the 1980s, were not cheap! Yes also think VHS was larger on rental videos. Remember you could also rent the player who was smart as it extend customer base to people not having an player. But saw the fun in Betamax vs VHS being politic or religion Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted April 17 Share Posted April 17 So, NASA and Voyager are exchanging with videocassettes, sending them to each other? Makes sense. Quote Link to comment Share on other sites More sharing options...
darthgently Posted April 17 Share Posted April 17 5 hours ago, kerbiloid said: So, NASA and Voyager are exchanging with videocassettes, sending them to each other? Makes sense. Everyone wondered what happened to Blockbuster. They got a big dark government contract and are doing just fine. Though most of their margin in that contract is late fees Quote Link to comment Share on other sites More sharing options...
Nuke Posted April 17 Share Posted April 17 (edited) On 4/15/2024 at 11:54 AM, darthgently said: Wouldn't it be the greatest punchline if the tape system in V1 turned out to be basically Sony BetaMax? It was a better standard. Oh, wait, that's right, no politics or religion ... my head canon is that its an 8 track. On 4/15/2024 at 12:15 PM, adsii1970 said: I am old enough to remember the Betamax recorders. That's not politics or religion; it's just a fact. What did them in was the recordable cassettes were more expensive than the VHS ones. Those suckers, even in the 1980s, were not cheap! my grandpa was an electronics repairman so i saw all kinds of gizmos visiting the grandparents. they also collected antiques. when there was some overlap awesomeness ensued. old timey radios, betamax, a very early tv with a tiny screen, all functional of course. Edited April 17 by Nuke Quote Link to comment Share on other sites More sharing options...
adsii1970 Posted April 18 Share Posted April 18 35 minutes ago, Nuke said: my head canon is that its an 8 track. That predates the Betamax. I am so old I had a portable 8-track player. It ran on six "D" cell batteries. Ah, the old cla-clunk of the thing changing tracks. I remember it well! 37 minutes ago, Nuke said: my grandpa was an electronics repairman so i saw all kinds of gizmos visiting the grandparents. they also collected antiques. when there was some overlap awesomeness ensued. old timey radios, betamax, a very early tv with a tiny screen, all functional of course. We want antiques that are fully functional. That's what distinguishes an antique from junk. Quote Link to comment Share on other sites More sharing options...
Nuke Posted April 18 Share Posted April 18 (edited) 19 minutes ago, adsii1970 said: That predates the Betamax. I am so old I had a portable 8-track player. It ran on six "D" cell batteries. Ah, the old cla-clunk of the thing changing tracks. I remember it well! We want antiques that are fully functional. That's what distinguishes an antique from junk. unfortunately grandpa died some 20 years ago and the collection has been liquidated by greedy members of the family (read most of them). the only thing i got was a massive roll of rosin core 60-40 solder, which i still haven't used up yet. i kind of wanted to make the ancient tv run doom. Edited April 18 by Nuke Quote Link to comment Share on other sites More sharing options...
Lisias Posted April 18 Share Posted April 18 9 hours ago, kerbiloid said: So, NASA and Voyager are exchanging with videocassettes, sending them to each other? Makes sense. As someone that "been there, done that"... Videocassetes had a way better noise/signal ratio, and we could save our programs using it faster and with more reliability than using audio cassettes. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted April 18 Share Posted April 18 2 hours ago, Lisias said: As someone that "been there, done that"... Videocassetes had a way better noise/signal ratio, and we could save our programs using it faster and with more reliability than using audio cassettes. They send videoinstructions to the pilot. Quote Link to comment Share on other sites More sharing options...
PakledHostage Posted April 23 Share Posted April 23 This CNN article says Voyager 1 is back in business as of April 20th, following a firmware update that works around the bad memory location. Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted April 23 Author Share Posted April 23 40 minutes ago, PakledHostage said: This CNN article says Voyager 1 is back in business as of April 20th, following a firmware update that works around the bad memory location. Quote Link to comment Share on other sites More sharing options...
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