> There's a long article about it on IGN- perhaps your answer is contained within it?: > > The Untold Story of Xbox One Backwards Compatibility > > There is also a discussion about it on Reddit where one poster says: > > Yep and it's complete fiction. Literally, all of the games that are backwards > compatible are downloadable titles where they've replaced the executables and some of > the resources with x86 equivalents by recompilation. > > None of this is emulation in real-time. > > So maybe the article doesn't have the answer after all.
I've also been told by somebody who claims to have worked on one of them that it's not real emulation either. At best it's a hybrid, large parts simply recompiled / static recompiled with hacks applied, a few specific bits emulated, some 'mapper' stuff to plaster over other differences.
'By any means possible' were his exact words.
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