i have a old ps1 the grey fat one with a X-killer adapter that goes in the parallel port. With it i can boot backup games by using a original playstation disc and then the cd stops and i can swap the burned/backup one and play. I could play most of my backups, pal or ntsc games. but now days the its really hard to boot up the backup games, like 1/15 tries. Even if it work it would automatic restarts after a few min of gameplay to the xkillers menu. I can still play original playstation games fine, without problems. Now to my 1st question is my x-killer adapter failing on me ? or is it the laser ? I recently bought a psone, the small newer one. That have already been mod chipped, so i can play backups without swaping disc etc. But not all my backup games that once worked with my old ps1 worked. Why is that ? may it be that the new psone cant read all the types of burned discs ? (diff brands)? cuz some of them works, or is it because the mod chip dont allow me to play ntsc games ? to my 2nd question, if i download the PS-X-Change boot disc and burn it from the iso, and use it on my psone will i be able to play all my games ? both of my playstations are pal versions.