Does anyone know if it’s possible to get 64dd roms to work on an everdrive 64? That’d be so cool if possible.
Yes.
First of all, I have NO Everdrive for N64, and I've never tested that, BUT, you SHOULD BE ABLE to play the 64DD games in a N64 using the roms you can found in 64DD.org with your Everdrive64.
Go to 64DD.org, go to "database", and then go to "Cartridge Ports". Download the cart ports, NOT the original disk roms you can also find in that web. The cart versions are ".n64" type of roms, and they are "new", made by the community converting the original disks, to a cart format (by 64DD experts) like if they were originally cart based games for N64 (Basically, like this SM64DD cart version above).
So you can now (I hope) play them in an Everdrive64. You could also get a complete version of F-Zero X with his expansion included, in cart format. I repeat, though, I've never tried them in original hardware, so, don't get mad with me if you have any problem.
And talking about problems:
the problem with that web is... it is confusing as hell, and the new version, supposedly improved to solve that, is even MORE confusing than the old one, so if you could not find them, the cart versions are here:
https://64dd.org/database.html#cart
BUT WAIT, because along the last years they even made TRANSLATIONS to english of many of those games, available ALSO in cart format. But those are not in the same place (that web is chaotic as hell). Those English versions are here:
https://64dd.org/database.html#trans
You are welcome.
PS: That webpage is owned (I'm almost 100% sure) by LuigiBlood, which (I believe) is a french dude who made amazing discoveries about the 64DD this last 10 years along with people like Zoinkity and others. Those include how it technically works, the dumping of games, the dumping of betas, translations of games and betas, and the dumping of the IPLs (basically "the firmware/BIOS") of different 64DD models. Models like the japanese comercial one, development 64DDs (extremely rare versions), or the IPL of the one and only "US version of 64DD" ever found... literally ONE OF A KIND hardware, which was a HUGE surprise to find because nobody in the community knew "a western 64DD version" it ever even existed... so
nobody was even "searching"for it. That "US 64DD" was found in a flee market, 100% BY CHANCE, around the area of Seattle where Nintendo of America is based, by some youtuber called Metaljesus, and he just BARELY knew what a "64DD" was when he bought that. He thought he was buying a normal 64DD... by a bargain price, with just a "strange sticker" in its side. What he was really buying was "an unknown (by then) holy grail", if that even makes sense. THAT is C-R-A-Z-Y.
And I mean, a level of craziness similar to when a random guy found a real "SNES Playstation" in his own family house attic (which at least, that machine was known to exist... during some point in time). Recently we could see as Shuhei Yoshida, ex-Sony executive, has another SNES Playstation in perfect state. So... that "US 64DD" is even rare than a SNES Playstation (and that was considered the true "Holy grail" of console videogames during decades, until it was found). Fortunately, the unique IPL of that american 64DD is now dumped and saved forever, and anyone can download it and use it (even emulate it) by free, thanks to these people. Amazing.
That guy, Luigiblood, also discovered some official "read check and even recording" hidden programs in the 64DD firmware he uses to make backups of the disks he can found and upload them into the internet, or to test the 64DD rom hacks in real hardware, like for example a fan made 64DD expansion for Zelda Ocarina of time.
And btw, he is also a searcher of BLUE DISKS (they are literally blue cased 64DD disks), very rare to find, used to develop tech demos and games on the 64DD by Nintendo and official developers. Finding one Blue Disk is way more stranger than a blue moon, and can contain from nothing (blank, ready to be recorded), to beta versions of released titles... to potentially pure treasures, like cancelled games. They could even have some Zelda 64 alpha/beta content, or even bigger... and talking again about "Holy Grails", the biggest one in the Nintendo community: a Mother 3's beta for 64DD. But that never happened up to this day, and maybe never will: If a 64DD disk like this exist today, it's probably being slowly rotten apart in some Nintendo warehouse/storehouse/archive).
Anyways... if anyone have a 64DD Blue Disk, please GET IN TOUCH WITH HIM to see if it contains data (those disks can't be read by "normal" 64DDs) and dump it to preserve whatever the disk has (if has something): those are magnetic disks, and they will eventually be corrupted at some point. Being already 25 years old... there is a lot of hurry in finding and dumping to preserve the maximum possible number of them as soon as possible.