Gravis Ultrasound Classic

Base address jumper setting -- JUMPER JP1

           :|||    |:||    ::||    ||:|    :|:|    |::|
           0x210   0x220   0x230   0x240   0x250   0x260
                 (Default)

Linux drivers.
Use ALSA drivers from http://www.alsa-project.org.
If you cannot unmute your card with amixer (as the INSTALL file suggests), do it with the alsactl utility:
```
           % ./alsactl store
           % $EDITOR /etc/asound.conf
           % ./alsactl restore
```
Contrary to what the ALSA documentation says, mpg123 does not always work right, use mp3blaster instead. Get it at http://www.stack.nl/~brama/mp3blaster/index.html.
GUS no longer supported :-/
The official gravis homepage is http://www.gravis.com -- but don't waste your time, you won't find anything there. Don't bother calling their support either -- they won't even answer a simple jumper question). Instead you might want to see:
1. Sound-HOWTO: http://www.linuxdoc.org/HOWTO/Sound-HOWTO.html
2. Gravis Ultrasound HOWTO (outdated): ftp://ftp.netbiz.net.au/linux2/howto/GRAVIS-U.TXT
3. The ULTRASOUND Plug 'n' Play MINI howto: http://wuarchive.wustl.edu/systems/linux/slackware/docs/Linux-mini-HOWTO/Gravis-UltraSound