On Sun, 23 Feb 2003, Antti Kantee wrote:

> On Fri Feb 21 2003 at 12:17:19 -0500, Adam K Kirchhoff wrote:
> > > > 2) Are there any soundcards that NetBSD suppots hardware mixing on?
> > >
> > > Mixing of different sources?  Yes.
> >
> > Can you give me an example?  The emuxki driver only allows one app at a
> > time to access /dev/audio...  The yds driver only allows one app at a time
> > to access /dev/audio.  Cards which use the eap driver don't support
> > hardware mixing at all (though you're right that the quality for playback
> > and recording is quite good).
>
> eap-class cards have two physical DACs, and if you define options
> EAP_USE_BOTH_DACS in your kernel config, the driver will attach two
> audio interfaces which can be used for playback simultaneously.
>
> A similar trick is possible with the esa driver.

FYI, not all eap-class cards have both DACs.  The ones made by Ensoniq do,
but I believe the ones from Creative only have one.

Adam