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kernel-doc-3.11.10-100.fc18.noarch.rpm

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>z8530_write_port</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="Z8530 Programming Guide" /><link rel="up" href="intfunctions.html" title="Chapter&#160;10.&#160;Internal Functions" /><link rel="prev" href="API-z8530-read-port.html" title="z8530_read_port" /><link rel="next" href="API-read-zsreg.html" title="read_zsreg" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">z8530_write_port</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-z8530-read-port.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;10.&#160;Internal Functions</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-read-zsreg.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="API-z8530-write-port"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>z8530_write_port &#8212; 
     Architecture specific interface function
 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">z8530_write_port </strong>(</code></td><td>unsigned long <var class="pdparam">p</var>, </td></tr><tr><td>&#160;</td><td>u8 <var class="pdparam">d</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a id="idm140438215178016"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>p</code></em></span></dt><dd><p>
     port to write
    </p></dd><dt><span class="term"><em class="parameter"><code>d</code></em></span></dt><dd><p>
     value to write
    </p></dd></dl></div></div><div class="refsect1"><a id="idm140438215173056"></a><h2>Description</h2><p>
   Write a value to a port with delays if need be. Note that the
   caller must hold locks to avoid read/writes from other contexts
   violating the 5uS rule
   </p><p>

   In the longer term this should become an architecture specific
   section so that this can become a generic driver interface for all
   platforms. For now we only handle PC I/O ports with or without the
   dread 5uS sanity delay.
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