Well, except for the gamecube and the wii (wii has 2.0 usb) every console you named has native HD support so iso loading was kind of easy to implement via software only. And the sad answer to your question is: no, no one is working at the Dreamcast GD-Rom emulator and that sucks.
I believe that there's plenty of Dreamcast fans around the world willing to see this happen. If the word got spread across many blogs/ social networks/ forums/ etc, I'm sure this could turn into something very profitable. Why not start a kickstarter project? Again, no pressure intended.
Facebook group created for this: http://www.facebook.com/groups/336612363081189/#!/groups/336612363081189/
http://krikzz.com/res/ed64/ed64_t.jpg believe me or not, but Krikzz's ED64 is easy reprogram for emulating ps1/ps2/dc and for other consoles)).. it contains all parts it need for emu. the question is only in new firware of FPGA)) i can make it... BUT i have no ED64, i'll make my own.
I have the ED64 model in picture complete with USB port, casing, and 6102 CIC. Interested in it? PM if you want it cybdyn. I'll sell at reasonable price.
I've often wondered if anyone knew more about how Sega's Naomi hardware works. Wikipedia claims, with absolutely no references or attribution, that this arcade version of the Dreamcast was available either with simple ROM chips for game storage or a RAM-cached GDROM drive. Presumably these were using the same data interface as the Dreamcast's disc drive? Could any similar system be used to interface with the GD drive, using flash memory instead of ROM? Who knows. http://en.wikipedia.org/wiki/Sega_Naomi#Sega_Naomi
The disc drive for Naomi is basically a casing and interface for the DC disc drive - you can swap the internal actual drive units between the two. However the actual data interface is different, as is the data handling itself. Aside for the shared drive unit they operate in completely different ways. For example when a Naomi disc boots up it copies all it's data into ram before running, so the game essentially behaves as a massive cartridge. Dreamcast has to access the data from disc as it's needed, with games coded specifically to address this. The two systems have a lot in common but also a lot of differences which make a working DC solution extremely difficult whereas it's trivial to do on a Naomi now the security is long bypassed (providing you have the data). No amount of facebook groups or money will result in a working solution. What it will take is hard working skilled people working on it constantly and sharing information. Even then it won't be quick or simple a process. If anything social media and the idea of making a profit are the worst things you could do. Social media only attracts interest of people who want the hard work done for them and thoughts of profit should come after making a actual solution, and even then I wouldn't think about making money on it at all.
i still work on this project, why does anyone say that "there is no one.." it can be made faster if i can share my ideas with Krikzz capability of developing PCB, all debuging work i can make myself. but what we can do, He likes old-style cartridge based consoles like Sega MD....
Hasn't it been rumored that the maker of that new 3DO hard drive board may make one for DC? As for that USB/SD device, I can't believe a game could be loaded at all through a regular serial port like the DC has. Way too slow.
I am going to begin carrying 3DO IDE Adapter soon and I have been encouraging him that DC would be next system to do if he can. Told him would supply him whatever he needs to get it done.
Looking forward to it if this guy can do it. And to think, all the interest in getting this idea back up and running was started by me with my thread in the Dreamcast section. ["Let's make Dreamcast GD ROM emulation happen" group on Facebook.] thread. I hope this guy does it. I'd be all over that. Get at least 3 if they ever get made.
I would be down for one as well. I used to be an administrator on a Dreamcast forum, and back in the day, we would've killed for something like this (this was 4 to 7 years ago). With all the advancements in technology for retro consoles, it would be awesome to see this come to life!
Although this isn't really dreamcast related....I wonder how hard it would be to make a naomi flashcart of some form... ( besides the cf adapter thing they have )