Audio channels are swapped since commit e02b66d (20230722)

[retrofun]

Since commit e02b66d (Jul 22 2023) in staging branch the audio channels are swapped.

Committed as fff8f20 (Jan 20 2024) to master branch.

rtl/virtual/hybrid_pwm_sd.v

How to reproduce: Audio test with Amiga Test Kit:

• minimig_mist_20230712_2.rbf :heavy_check_mark:
• minimig_mist_20230722.rbf :x:

[robinsonb5]

Thanks, confirmed - I'll revert that in the near future. (Turns out my PC's speakers are the wrong way round!)