Hideo Kojima described to the PS Blog some of the changes his team made to Metal Gear Solid: Peace Walker so the PSP title would work on PS3.
“PSP obviously has fewer buttons than the PS3 controller, and it had some limitations when it comes to control,” he said. “Using the DualShock 3, movement of many things improved…as did, of course, [the addition of] rumble support.
“On the PSP, it was also hard to tell some textures apart. Now, rendered in HD, they are are much easier to see. The in-game text is also easier to read.”
Kojima went on to say that “transfarring” will allow players to take their Peace Walker save files from one PSP to another PSP, and that the next step is to take PS2-quality games like MGS 2 and MGS 3to HD and “then to take them to Vita transfarring.”
“My next step is games that will come out for the PS3 from now on, so I can take advantage of this technology with the Vita with content that is exactly the same,” he said. “I hope that cloud service is available now, and it would be ideal for me if transfarring were to serve as a bridge between the two services.”
You can read more through the link, where he also chats a bit about the recently announced FOX Engine.