Here's why:
* Different Hardware: The PlayStation 1 and PlayStation 2 have different architectures, meaning their memory structures are different. Codes that work on one console won't necessarily function on the other.
* Different Code Formats: The code format used by GameShark for PS1 and PS2 is distinct.
* Different Memory Addressing: Memory locations where data is stored are different between the consoles.
Alternatives:
* Find PS2 Specific Codes: Search online using the game's name and "PS2 GameShark codes." There are dedicated websites and databases that specialize in PS2 cheat codes.
* Code Converters (Limited Success): There are some unofficial online tools that claim to convert PS1 codes to PS2. However, their effectiveness is questionable and not guaranteed.
* PS2 Code Generators: Some websites offer tools to generate your own PS2 codes, but this is a complex process requiring a deep understanding of memory addressing and code structure.
Important Note: Using cheat codes can potentially corrupt save files or break your game. Proceed with caution and back up your save data before trying any codes.