It sounds like you're looking for a description or support detail for a "GameShark PS2 ROM" — likely meaning you want to use GameShark cheat codes on a PS2 ROM (i.e., a PS2 game backup or ISO) played via an emulator or on original hardware.
Strictly speaking, the PS2 GameShark did not run from a "ROM" (Read-Only Memory image) in the classic cartridge sense. However, in emulation and archival communities, the term "GameShark PS2 ROM" loosely refers to:
While the PS2 era has come and gone, the nostalgia for Gameshark PS2 ROMs remains strong. These cheat devices and ROMs not only enhanced gameplay experiences but also: Gameshark Ps2 Rom
provide pre-formatted patch files for thousands of PS2 titles, often allowing you to download them directly as .pnach files Emulator Guides : Detailed setup tutorials for (Android) explain how to manage these files effectively for a particular game or a link to a code converter
Original Gameshark discs are rare, prone to disc rot, and often require specific PS2 models to work. Consequently, the emulation community began creating of the Gameshark disc. A "Gameshark PS2 ROM" is nothing more than a digital backup of that original cheat disc. feature It sounds like you're looking for a
: The user boots the GameShark disc (or ROM/ELF file) first [9, 11].
Would you like to know more about Gameshark PS2 ROMs, or perhaps how to use them? I'm here to help! Easy access to cheats : No more tedious code entry
Tell me which of the above you want and provide the game title or the Gameshark code and/or the game's CRC/ID.