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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
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+<table class="head">
+ <tr>
+ <td class="head-ltitle">LPT(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">LPT(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">lpt</code> &#x2014; <span class="Nd">generic
+ printer device driver</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp"><code class="Cd">lpt* at ppbus?</code>
+ <br/>
+ <code class="Cd">options LPT_DEBUG</code>
+ <br/>
+ <code class="Cd">options LPT_VERBOSE</code></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The <code class="Nm">lpt</code> driver is the port of the lpt
+ driver to the <a class="Xr">ppbus(4)</a> system.</p>
+<p class="Pp">The purpose of this driver is to allow parallel port sharing with
+ other parallel devices. See <a class="Xr">ppbus(4)</a> for more information
+ about the parallel port bus system.</p>
+<p class="Pp">The parallel port bus is reserved by <code class="Nm">lpt</code>
+ when the printer device is opened and released when the device is
+ closed.</p>
+<p class="Pp">Ports can be configured to use interrupts, DMA, IEEE negotiations,
+ and IEEE compliant transfer modes by using the <a class="Xr">lptctl(8)</a>
+ command, with modes depending on the hardware available.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="FILES"><a class="permalink" href="#FILES">FILES</a></h1>
+<dl class="Bl-tag Bl-compact">
+ <dt><span class="Pa">/dev/lpt?</span></dt>
+ <dd>parallel port device</dd>
+ <dt><span class="Pa">/dev/lpt?ctl</span></dt>
+ <dd>parallel port control device</dd>
+</dl>
+</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">atppc(4)</a>, <a class="Xr">ppbus(4)</a>,
+ <a class="Xr">lptctl(8)</a>, <a class="Xr">mknod(8)</a></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
+<p class="Pp">This driver is derived from the <span class="Ux">FreeBSD</span>
+ ppbus and also from the historic <span class="Ux">NetBSD</span> drivers.</p>
+<p class="Pp">The <code class="Nm">lpt</code> driver used to assign special
+ meaning for some bits of device minor. This was dropped in ppbus-based
+ <code class="Nm">lpt</code> in favour of configuration via
+ <a class="Xr">lptctl(8)</a>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
+<p class="Pp">This manual page was based on the <span class="Ux">FreeBSD</span>
+ <code class="Nm">lpt</code> manual page. The information has been updated
+ for the <span class="Ux">NetBSD</span> port by Gary Thorpe.</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">February 3, 2004</td>
+ <td class="foot-os">NetBSD 10.1</td>
+ </tr>
+</table>