> > How large is it?  You can write a small userland program to feed in
> > that data via ioctl or other means.
> 
> See for yourself:
> 
>   http://invisible.yi.org/~jmcneill/netbsd/esa-20010826.tar.gz
> 
> The structures are in esadsp.h (esareg.h is also GPL'd, but I should be
> able to regenerate that).

So, around 2.5KB.  

I'll profess near-total ignorance of our sound driver subsystem -- not
sure how you'd hooking a new ioctl into a sound driver (because of the
/dev/audio indirection).  Lennart?