format) and named exactly as the core expects. For example, a PS1 BIOS might need to be named scph5501.bin Verification

✅ : Some cores use HLE (High-Level Emulation) BIOS — no file needed, but compatibility may suffer.

Must remain zipped; often required in both system and ROM folders. Go to product viewer dialog for this item. dc_boot.bin , dc_flash.bin Often placed in a dc subfolder. Game Boy Advance gba_bios.bin

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