To resolve "dl-1425.bin NOT FOUND" errors, the file must be present in one of the following:

To resolve the "dl-1425.bin NOT FOUND" error, follow these steps: Locate the File: Search for a MAME "Roll-up" or "BIOS set" that includes qsound_hle.zip Place it Correctly: unzip it. Move the qsound_hle.zip file directly into your MAME Check Version Match: Ensure your qsound_hle.zip

The implementation of this file in MAME is documented in the source code, specifically within the qsoundhle.cpp file on GitHub. This source file outlines how the internal ROM region is mapped and used by the emulator to process PCM and ADPCM audio voices.