Concerning DSP firmware

[71knight]

Bsnes does not seem to be applying the DSP lle firmware to the games. Specifically pilotwings plane crashes short of the runway in the demo. I have dsp1.data.rom and dsp1.program.rom in retroarch/system directory. Retroarch core information says I have the correct firmware but the plane demo is still broken. Maybe this is a regression? Also would be nice if there was an indicator showing if lle or hle DSP emulation was being used.

[nanitaro]

It works fine on Mesen-S cores that use DSP firmware.
Therefore, it seems to be a problem specific to the Bsnes core.
The Prefer HLE option does not seem to work.