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+<table class="head">
+ <tr>
+ <td class="head-ltitle">SND_ES137X(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">SND_ES137X(4)</td>
+ </tr>
+</table>
+<div class="manual-text">
+<section class="Sh">
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
+<p class="Pp"><code class="Nm">snd_es137x</code> &#x2014;
+ <span class="Nd">Ensoniq AudioPCI ES137x bridge device driver</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp">To compile this driver into the kernel, place the following lines
+ in your kernel configuration file:</p>
+<div class="Bd Pp Bd-indent"><code class="Cd">device sound</code>
+<br/>
+<code class="Cd">device snd_es137x</code></div>
+<p class="Pp">Alternatively, to load the driver as a module at boot time, place
+ the following line in <a class="Xr">loader.conf(5)</a>:</p>
+<div class="Bd Pp Bd-indent Li">
+<pre>snd_es137x_load=&quot;YES&quot;</pre>
+</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The <code class="Nm">snd_es137x</code> bridge driver allows the
+ generic audio driver <a class="Xr">sound(4)</a> to attach to the Ensoniq
+ 137x audio cards.</p>
+<section class="Ss">
+<h2 class="Ss" id="Runtime_Configuration"><a class="permalink" href="#Runtime_Configuration">Runtime
+ Configuration</a></h2>
+<p class="Pp">The following <a class="Xr">sysctl(8)</a> variables are available
+ in addition to those available to all <a class="Xr">sound(4)</a>
+ devices:</p>
+<div class="Bd-indent">
+<dl class="Bl-tag">
+ <dt id="hw.snd.pcm_d.latency_timer"><var class="Va">hw.snd.pcm%d.latency_timer</var></dt>
+ <dd>Controls the PCI latency timer setting. Increasing this value will solve
+ most popping and crackling issues (especially on VIA motherboards).</dd>
+ <dt id="hw.snd.pcm_d.spdif_enabled"><var class="Va">hw.snd.pcm%d.spdif_enabled</var></dt>
+ <dd>Enables S/PDIF output on the primary playback channel. This
+ <a class="Xr">sysctl(8)</a> variable is available only if the device is
+ known to support S/PDIF output.</dd>
+ <dt id="dev.pcm._d.polling"><var class="Va">dev.pcm.%d.polling</var></dt>
+ <dd>Experimental polling mode, where the driver operates by querying the
+ device state on each tick using <a class="Xr">callout(9)</a>. 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.</dd>
+</dl>
+</div>
+</section>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
+<p class="Pp">The <code class="Nm">snd_es137x</code> driver supports the
+ following sound cards:</p>
+<p class="Pp"></p>
+<ul class="Bl-bullet Bl-compact">
+ <li>Creative CT5880-A</li>
+ <li>Creative CT5880-C</li>
+ <li>Creative CT5880-D</li>
+ <li>Creative CT5880-E</li>
+ <li>Creative SB AudioPCI CT4730</li>
+ <li>Ensoniq AudioPCI ES1370</li>
+ <li>Ensoniq AudioPCI ES1371-A</li>
+ <li>Ensoniq AudioPCI ES1371-B</li>
+ <li>Ensoniq AudioPCI ES1373-A</li>
+ <li>Ensoniq AudioPCI ES1373-B</li>
+ <li>Ensoniq AudioPCI ES1373-8</li>
+</ul>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+ ALSO</a></h1>
+<p class="Pp"><a class="Xr">sound(4)</a></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
+<p class="Pp">The <code class="Nm">snd_es137x</code> device driver first
+ appeared in <span class="Ux">FreeBSD 4.0</span>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
+<p class="Pp"><span class="An">Russell Cattelan</span>
+ &lt;<a class="Mt" href="mailto:cattelan@thebarn.com">cattelan@thebarn.com</a>&gt;
+ <br/>
+ <span class="An">Cameron Grant</span>
+ &lt;<a class="Mt" href="mailto:cg@FreeBSD.org">cg@FreeBSD.org</a>&gt;
+ <br/>
+ <span class="An">Joachim Kuebart</span>
+ <br/>
+ <span class="An">Jonathan Noack</span>
+ &lt;<a class="Mt" href="mailto:noackjr@alumni.rice.edu">noackjr@alumni.rice.edu</a>&gt;</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">November 29, 2006</td>
+ <td class="foot-os">FreeBSD 15.0</td>
+ </tr>
+</table>