Today on one Atari forum from Poland i found
amazing cartridge for Atari 65XE/800XE/130XE/800XL/XEGS.
It is 18 channel stereo - OPL3 soundcard!!!

Webpage:
http://atari.neostrada.pl/yamari/yamari.html

OPL3Wiki:
http://en.wikipedia.org/wiki/Yamaha_YMF262

How OPL3 sounds:
https://www.youtube.com/watch?v=iWGLRg9Vm_Q
https://www.youtube.com/watch?v=BVGoCWpLSbs

Picture:

Now I want 4x of them... I hope there will be some OPL3 player or
even native tracker on A800 too...

WOW Thanks for posting this!! Very cool. I've thought about something similar for a while, both on the A800 and ST. Got's to get me one....
Yogi

Matej wrote:

Hmmmmm....:)  This is ? a one-off Atari cart??  It's labeled with 2012. OR is it a PD-98xx cart?  Do Tell
Yogi