MAME categorizes this as a rather than a standard BIOS or game ROM.
Starting with MAME version 0.201, the emulator shifted its audio handling and officially looks for a specific device file: dl-1425.bin qsound-hle.zip
The file is the internal DSP program ROM for the Capcom QSound audio chip, which was famously used in CPS2 (Capcom Play System 2) and ZN arcade hardware. In modern versions of the MAME emulator (starting around version 0.201), this file is a required component for any game utilizing High-Level Emulation (HLE) of the QSound chip. Technical Specifications File Name : dl-1425.bin MAME categorizes this as a rather than a