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You can use an open-source alternative like the PCSX Redux BIOS .

To play classic PlayStation 1 games on the high-performance emulator, you must first obtain a PS1 BIOS (Basic Input/Output System) file. This file acts as the console's operating system, enabling the emulator to bridge the gap between original hardware and your modern device. Why You Need a PS1 BIOS for DuckStation bios ps1 download duckstation

To ensure every game in your library runs smoothly, it is recommended to have one BIOS for each major region: You can use an open-source alternative like the