Originally Posted by
ProgrammingAce
You have to remember, the system discs are still reigon locked. You would need a jap saturn to play a jap game with the system disc. The action replay cart does something screwey with the system disc that makes it not work.
That's not what the Action Replay Plus 4M Auto cart does. What it's doing is injecting a Japanese BIOS into the system, you're trying to run a USA disc (the Saturn System Disc) so it won't run. Now if you use the System Disc in a US Saturn it will load but of course Radiant Silvergun won't because it's a JPN game. The reason the System Disc won't work with the AR cart is it's trying to shift to JPN mode to run the copy of Radiant Silvergun which has JPN coding. Daahh.. it's hard to explain clearly - apples and oranges?
In this case not even a hardmod switch will get around the problem since the System Disc needs to start in USA mode and the game would need to run in JPN mode.