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What is it? A common, retail PS2 memory card which comes with custom (encrypted) data in it that we cannot duplicate nor move to a different memory cards. What I suspect it is doing? I believe this game uses the cryptographic engine embedded into the card MCU to encrypt/decrypt the...

On this thread I'll try to explain the approach I use when decrypting games manually. The target, an American revision of Street Fighter Zero/Alpha3. I am starting with the encrypted romset, decryption keys (mame can execute the game) and mame debugger. The first step is discern is the size of...

As the title says, I spent a while thinking of how making this work. CPS1Q and CPS2 use a 16 byte array to send sound codes and Q-SOUND through the first 16 bytes of the shared RAM area. example: code 0x0ff0 => 0f ff 00 00 00 ff 00 xx 00 00 00 00 00 ff ff ff xx let 68k side know if anything...

Some of you already know me from other forums. I am from Brazil, I like retro gaming stuff (I'm very eclectic with the stuff I play with) with particular interest on stuff like SEGA, Capcom, Konami and Namco arcade games. Also, I am one of the folks making the decrypted CPS2 roms which are...