https://manpages.ubuntu.com/manpages/focal/man4/snd_gusc.4freebsd.html
Ubuntu Manpage: snd_gusc - Gravis UltraSound ISA bridge device driver
Gravis UltraSound ISA bridge device driver
gravis ultrasoundbridge deviceubuntumanpagesnd
https://forums.cncnet.org/topic/852-dune-ii-unofficial-gravis-ultrasound-patch-for-dosbox/
Dune II Unofficial Gravis Ultrasound Patch (for DOSBox) - General Discussion - CnCNet Community...
Not long ago I've configured DOSBox for Gravis Ultrasound emulation (which allows for high-quality synthesized music), and while browsing for possibly useful...
dune iigravis ultrasound
https://www.soundcard-drivers.com/drivers/37/37031.htm
Advanced Gravis gravis driver - Advanced Gravis Sound Card Drivers - gravis_ultrasound_PnP.zip
sound cardadvancedgravisdriverultrasound