: It contains software interrupt routines that games call to perform standard tasks, such as calculating sound frequencies or managing power states.
Go to Config -> Emu settings -> DS-mode and browse for the file. ds bios7.bin file
RetroArch (MelonDS or DeSmuME cores) Cause: The BIOS files are placed in the system directory but RetroArch’s permissions block access. Fix: Manually set the System Directory in RetroArch Settings → Directory → System/BIOS. : It contains software interrupt routines that games