The Original Xbox and Xbox 360 used different processors as well.
IIRC, Microsoft allowed/encouraged publishers to re-compile, and release a patch via XBL which let people play the original games on the new system.
IIRC, Microsoft allowed/encouraged publishers to re-compile, and release a patch via XBL which let people play the original games on the new system.
It seems like this would be an ideal opportunity for the QuickTransit [2] stuff Apple used in Rosetta to see some more use, assuming IBM would be willing to license it (and MS sees it as a worthwhile endeavour).
[1] : http://en.wikipedia.org/wiki/List_of_Xbox_games_compatible_w... [2] : http://en.wikipedia.org/wiki/QuickTransit