Is anyone familiar with this mod?



Evidently, he swapped out the NES' Picture Processing Unit (PPU) with one from a Playchoice 10, making the colors much brighter and the picture crisper. The modder also replaced the audio chip. The embedded video shows the difference in sound and audio quality in the Famicom version of Contra. I have to say, I'm kinda interested. What does anyone know about this mod? Does it require cannibalizing a Playchoice-10 or are there other ways? How much cash would something like this probably take to make happen?