How does Gameshark do this?

[redbull]

Yep caetla codes are not the same. Pity becuase most of the codes published are gameshark.

I have the circuit diagram for the caetla chips. These can be turned into gameshark cartidges.

Also I have several roms too. (some really obscure) and some just plain cheap japanese ripp-offs.

I used to do quite a bit of Playstation programming and Caetla is the way to go for this. Unfortunately the card to hook the caetla to the PC is available in ISA only. I have the card, but alas my pc is PCI only.

Does anybody know of a PCI version of this card ??