Fact is, not all games had the entire contents of the cartridge on one single IC. In fact, I would wager my next paycheck that a fair few do not. They're split across multiple chips.
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Worse still, different cartridges had different ways of mapping the contents of these ICs onto a given console's bus. Doing a straight-up read of addresses 0 to N can't and won't give you the full contents of the cartridge in any one of numerous rare edge cases.
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What this tells me, more than anything, is that you folks are only interested in backing up the more popular games, the more common games, the ones that are largely in little jeopardy of being lost to bit-rot in the first place.
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Vastauksena käyttäjille @TheMogMiner ja @museumofplay
It's important to keep in mind that this is one tool out of a growing toolbox. Every tool can have its use case. We're not afraid to dump ROMs. I would actually say it's the opposite: we're more worried about those in jeopardy of being lost to bit-rot, which is why we prioritize.
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We've been focusing largely on our at-risk media. We embarked on a pilot project of dumping 100 floppy disks with a Kryoflux, which quickly expanded to dumping over 1700. These aren't retail floppy disks either, these are strictly from our archives.
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Vastauksena käyttäjille @Borman18 ja @museumofplay
I really hate to so consistently be That Guy (believe me, I do), but isn't the Kryoflux ostensibly a closed-source solution that relies on closed-source tools and proprietary formats, where there are equivalent tools that are far more open?
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Vastauksena käyttäjille @TheMogMiner ja @museumofplay
Again, the Kryoflux is a tool, but is unfortunately one of the ones that makes sense. right now We also have an Applesauce, which unfortunately didn't exist and was one of the limitations that I highlighted with the Kryoflux.
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Vastauksena käyttäjille @Borman18 ja @museumofplay
That's fair. On a similar note, have you all been in contact with the Domesday '86 people re: preserving laserdiscs? They've developed a 100% open-source solution, the Domesday Duplicator, which effectively captures laserdiscs as high-quality as physically possible.
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Do the project have really begun ? I'm waiting since ages from news about the Pioneer LaserActive project from their part.
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The hardware is done and dusted. To capture LaserActive discs, all you need to do is get a DdD board, tap the RF output directly off a compatible LD player, and start dumping discs.
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At this point, the main focus has been on improving the decode quality of ld-decode, and writing additional tools such as ld-combine, which can take multiple DdD captures of the same disc and merge them together to minimize dropouts without explicit dropout correction.
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Vastauksena käyttäjille @TheMogMiner, @Zetsuboushitta ja
For a practical example of the power of ld-combine, take a look at this: https://polygonal-moogle.com/laserdisc/ld-combine/before.mp4 … - a later part of the Domesday National disc 2, on a disc with bad edge rot. https://polygonal-moogle.com/laserdisc/ld-combine/after.mp4 … - after merging with a capture with a different copy of the same disc.
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Vastauksena käyttäjille @TheMogMiner, @Zetsuboushitta ja
Regarding the still-present "sparkles", there are plans to improve the signal analysis to get rid of them, too. Also, the "after" capture is just from analyzing per-scanline which of the two captures has better data. Eventually, ld-combine will merge intra-scanline, too.
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