Hi, I am currently installing my Pentium200mmx. It's a nice DesktopCase called FSC-ProC5. The Mainboard is D1025. http://www.eastcomp.de/fsc/d1025.html
It has crystal PNP soundcard onboard. Everything works fine, but I have one small issue. I have upgraded the onboard-wave-table socked with the crystal wavetable chip.
The wavetable is ok, not really that good, but OK. The onboard-sound has also a bug free MPU401 and I have a MT32 and SC55 connected to it.
The Problem is, that I cannot mute the crystal wavetable-chip. There is no mixersetting to choose "internal wave-table" <> "external midi-device"
Does anyone know a 3rdparty mixer that can provide that?
Otherwise I have two options:
1. Take out the crystal wavetable-chip
2. Add another mpu-card at H300 and use that for the external devices.

Thx Doc