HappySqurriel on 31 May 2008
Full backwards compatibility is a nightmare when you look at consoles that switch their architecture from generation to generation; you don't have enough processing power to do a full software emulation so you're forced to do instruction translation which has compatibility issues. Now you can continue to develop the software and provide alternatives to how you translate instructions but then you have to store configuration information about particular games which involves testing various games under various settings to determine which works well.
