A very good Question?

[Anzelmaster]

I'm not sure what this little error is called... but there are games which CAN detect even some brands of Stealth mod chips.

How do I know? I had one installed just the other day. I managed to play Parasite Eve 2's backup copy -- but when I tried to make one of Resident Evil 3: Nemesis, I was only able to get to the "This game contains explicit scenes of violence and gore" screen. After that the psx stopped reading and I was looking at a line of Japanese text and a small red circle with a line though it.

I was even told at the repair shop that there were some games that wouldn't work, and my brother's friend said that he had the same problem a few times.