gamerk316 :
There was an attempt at an Xbox emulator very early in development; MSFT went a little ballistic though. While emulation has been protected by numerous court rulings over the years, the developers decided that wasn't a fight worth fighting.
And what was that emulator called? Ive never heard of microsoft going mad over anyone making an emulator, if they would WINE and DOSBox would have been nuked on day one lol
So far theres only been 3 emulators for the xbox, one is cxbx, the other is dxbx which is basically cxbx but rewritten in a different programming language and nothing more, and ofcourse xeon, which works like cxbx but only plays Halo : Combat Evolved, and just the first level of it at that, and incredibly glitchy too. The sad thing about them is they arent actually emulators, just dumb patchers that try to route all calls to the xbox's hardware to that of windows, that really isnt emultion, but people got hopeful from it and rallied behind it since caustik (guy behind cxbx) came up with the idea as an experiment.
Xeon came and went as fast as it went, caustik and the guy behind xeon (_SF_) fought because he thought xeon stole cxbx code, everyone booed him even though he didnt. He never came back since he made it sometime in 2001-2002
Caustik got bored of cxbx (it was just a weird idea he came up with after all) and the project died in 2005 officially after he left it, some people though worked on it but the three other guys that made random updates to it vanished too, since then its been maintained by a guy called blueshogun, andddddd... well its been his pet that he just blogs about and nothing else happens much to it
Dxbx officially died off when they had nothing left to work with since cxbx didnt update and dxbx was just a way for its developers to play with the delphi programming language
For an emulator to actually emulate (like every single emulator that exists like pcsx2, pSX, stella, nulldc, snes9x etc..) they need to recreate the entirety of the hardware so that technically theres a virtual console and the game loads into it as normally as you would on the real thing, all xbox emulators never did that, so they failed and died, however.... recently a guy called espes did a breakthrough and used Qemu to create something that might just be the only hope left for an xbox emulator, but no news aside from its github page exists, it was/is called "xqemu"
the only thing capable of emulating xbox games and actually playing them, is non other than the xbox 360, microsoft created an emulator within it that works with specific games, its your best bet so far, however it only works with select games, and sadly it doesnt even work with half of the xbox's exclusive titles, the only other hope you have is seeing if your game was also made for the ps2 (then use pcsx2 to play it) or to the gamecube (use dolphin for that) or lastly, if it was made for the pc