Okay it starts like this the original ps3′s used a microchip called the emotion engine to read Playstation 2 titles and was basically a mini ps2 processor. that microchip was expensive to make so inorder to reduce cost the ps3 lost it. well the Cell processor of the Playstation 3 might be able to do what the emotion chip did! PS2 game data just needs to be translated for the cell processor and sony have the code to do it!
To find out more head over to siliconera