Excerpts from netbsd: 29-Jul-98 Re: Boca PnP modem setup Christos
Zoulas@zoulas.c (2884)

> OK, if you want to try to configure this as an sb device, add:
> 
>  devlogic db YMH021
> 
> To the isapnpdevs and rebuild the header files and the kernel.

There is aleady a line
devlogic ym YMH0021  OPL3-SA3

best regards
Matthias