totally untrue , the reason you have to have the machine chipped is because it is impossible for conventional cd burners to write certain sectors of a playstation disc which the machine needs to read before it will boot and load the game, this is the function of the chip it tricks the machine into thinking it is a genuine game, also unlike the ps1 which was a simple chipping job do not try this yourself on a ps2 as it is a major pain and easy to run joints together as they are so close on the pcb and it is also very easy to cook the parts that you solder the connections to