?? ??? ?? ?? ??? ???? ?? ???????? ??? ?? ?????? ???? ??? ????? ????????? ??? ?? ?????? ? ?? ??????? ????? ???? ????? ??????? ??????.With previous hardware architecture becoming carried forward to the following consoles, Microsoft and Sony have emerged as robust advocates of backward compatibility.???? ??? ?????? ???? ?? ???? ????? ???? ??? ??? ?? ?