NAME

       snd_es137x — Ensoniq AudioPCI ES137x bridge device driver

SYNOPSIS

       To compile this driver into the kernel, place the following lines in your kernel configuration file:

             device sound
             device snd_es137x

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             snd_es137x_load="YES"

DESCRIPTION

       The snd_es137x bridge driver allows the generic audio driver sound(4) to attach to the Ensoniq 137x audio
       cards.

   Runtime Configuration
       The following sysctl(8) variables are available in addition to those available to all sound(4) devices:

             hw.snd.pcm%d.latency_timer  Controls  the  PCI  latency  timer setting.  Increasing this value will
                                         solve  most  popping  and   crackling   issues   (especially   on   VIA
                                         motherboards).

             hw.snd.pcm%d.spdif_enabled  Enables  S/PDIF output on the primary playback channel.  This sysctl(8)
                                         variable is available only if the device is  known  to  support  S/PDIF
                                         output.

             dev.pcm.%d.polling          Experimental  polling  mode,  where the driver operates by querying the
                                         device state on each tick using callout(9).   Polling  is  disabled  by
                                         default.   Do  not  enable  it  unless  you  are facing weird interrupt
                                         problems or if the device cannot generate interrupts at all.

HARDWARE

       The snd_es137x driver supports the following sound cards:

       •   Creative CT5880-A
       •   Creative CT5880-C
       •   Creative CT5880-D
       •   Creative CT5880-E
       •   Creative SB AudioPCI CT4730
       •   Ensoniq AudioPCI ES1370
       •   Ensoniq AudioPCI ES1371-A
       •   Ensoniq AudioPCI ES1371-B
       •   Ensoniq AudioPCI ES1373-A
       •   Ensoniq AudioPCI ES1373-B
       •   Ensoniq AudioPCI ES1373-8

SEE ALSO

       sound(4)

HISTORY

       The snd_es137x device driver first appeared in FreeBSD 4.0.

AUTHORS

       Russell Cattelan <cattelan@thebarn.com>
       Cameron Grant <cg@FreeBSD.org>
       Joachim Kuebart
       Jonathan Noack <noackjr@alumni.rice.edu>

Debian                                          November 29, 2006                                  SND_ES137X(4)