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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>z8530_rx</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1" /><link rel="home" href="index.html" title="Z8530 Programming Guide" /><link rel="up" href="intfunctions.html" title="Chapter 10. Internal Functions" /><link rel="prev" href="API-z8530-rtsdtr.html" title="z8530_rtsdtr" /><link rel="next" href="API-z8530-tx.html" title="z8530_tx" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>z8530_rx</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-z8530-rtsdtr.html">Prev</a> </td><th width="60%" align="center">Chapter 10. Internal Functions</th><td width="20%" align="right"> <a accesskey="n" href="API-z8530-tx.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="z8530_rx"><a id="API-z8530-rx"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>z8530_rx —
Handle a PIO receive event
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <strong>fsfuncz8530_rx </strong>(</code></td><td>struct z8530_channel * <var class="pdparam">c</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2799429"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>c</code></em></span></dt><dd><p>
Z8530 channel to process
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2799455"></a><h2>Description</h2><p>
Receive handler for receiving in PIO mode. This is much like the
async one but not quite the same or as complex
</p></div><div class="refsect1" title="Note"><a id="id2799467"></a><h2>Note</h2><p>
Its intended that this handler can easily be separated from
the main code to run realtime. That'll be needed for some machines
(eg to ever clock 64kbits on a sparc ;)).
</p><p>
The RT_LOCK macros don't do anything now. Keep the code covered
by them as short as possible in all circumstances - clocks cost
baud. The interrupt handler is assumed to be atomic w.r.t. to
other code - this is true in the RT case too.
</p><p>
We only cover the sync cases for this. If you want 2Mbit async
do it yourself but consider medical assistance first. This non DMA
synchronous mode is portable code. The DMA mode assumes PCI like
ISA DMA
</p><p>
Called with the device lock held
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