
The reason Genesis emulation on DS is so fast is because it's a hardware based emulator as opposed to software. The rest of my post is directed more towards the topic creator and others as i'm sure Rydian knows these things already. It has been done in other emulators that I didn't really notice any significant speed or compatibility reductions. But besides just not ever getting around to it before being recruited by Sega, implementing support for games over 3MB in size likely wouldn't have been impossible to do. A lot of the games actually run quite well already, fullspeed or close to it (there are exceptions here and there as well as slowdowns in some games). The speed I don't know about, though I could possibly imagine it being improved. Either way his name is in the credits but he never appeared online since then. It looks like it actually uses a modified version of JenesisDS with some tweaks and fixes here and there. Turned out he had been hired by Sega themselves to create their official Sonic collection on the DS, Sonic Classics Collection. The author Lordus (AKA Stephen Dittrich) disappeared off the net years ago.


I think it's probably fair to say that further improvements likely would have been made to JenesisDS had the author stuck with it.
