ISA sound cards have been obsolete for more than a decade, and it is (past) time to retire their drivers. This includes the following drivers/devices:
snd_ad1816 Analog Devices AD1816 SoundPort snd_ess Ensoniq ESS snd_gusc Gravis UltraSound snd_mss Microsoft Sound System snd_sbc Creative Sound Blaster I have a review open to add deprecation notices: https://reviews.freebsd.org/D34604 I expect to commit this in the near future, then MFC to stable branches and remove these drivers from main. Please follow up if there's a reason we should postpone the removal of any of these drivers.
