I only removed my GUS PnP and packed it away this morning, but it was working in a dual boot 95/Dos 5.02 system with an SB Pro 2. The files were a bit of a mess because Win 95 and DOS were on different hd's and I changed the bios settings when rebooting to a different OS. And the GUS software was a hassle to setup and I ended up with things cross-referenced [C: and D: mixed up].
However, here is what I think I had in my working GUS PnP configuration:
autoexec.bat contains:
@SET ULTRADIR=C:\ULTRASND
@C:\ULTRASND\ULTRINIT.EXE -dj
SET INTERWAVE=C:\GRAVIS\ULTRASND\IW.INI
SET IWDIR = C:\GRAVIS\ULTRASND
PATH= ... C:\ULTRASND; C:\GRAVIS\ULTRASND
I have a feeling the first two lines above were left over from an GUS ACE install.
config.sys contains:
device=C:\GRAVIS\ULTRANSD\IWINIT.EXE id=GRV00001
INTERWAVE=C:\GRAVIS\ULTRASND\IW.INI
IW.INI contains amongst a lot else:
[vendor grav_org]
default.fff=c:\ultrasnd\midi\
For sound in heretic I also need to type:
SET ULTRASND=220,5,7,11,5
Maybe not all this is relevant [as it may relate to other things I was trying, and not be necessary] but it might help you work out what you need to do.
If you have no joy with this I'll dig out my PnP and test it again.
🤣
Edit: Also noticed my Heretic is setup up for Gravis as sound card but General MIDI @330 for music.