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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>mca_set_dma_mode</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="MCA Driver Programming Interface" /><link rel="up" href="ch04.html" title="Chapter 4. DMA Functions Provided" /><link rel="prev" href="re15.html" title="mca_set_dma_io" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>mca_set_dma_mode</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re15.html">Prev</a> </td><th width="60%" align="center">Chapter 4. DMA Functions Provided</th><td width="20%" align="right"> </td></tr></table><hr /></div><div class="refentry" title="mca_set_dma_mode"><a id="API-mca-set-dma-mode"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>mca_set_dma_mode —
set the DMA mode
</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 <b class="fsfunc">mca_set_dma_mode </b>(</code></td><td>unsigned int <var class="pdparam">dmanr</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">mode</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2614883"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dmanr</code></em></span></dt><dd><p>
DMA channel
</p></dd><dt><span class="term"><em class="parameter"><code>mode</code></em></span></dt><dd><p>
mode to set
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2614924"></a><h2>Description</h2><p>
The DMA controller supports several modes. The mode values you can
set are-
</p><p>
<code class="constant">MCA_DMA_MODE_READ</code> when reading from the DMA device.
</p><p>
<code class="constant">MCA_DMA_MODE_WRITE</code> to writing to the DMA device.
</p><p>
<code class="constant">MCA_DMA_MODE_IO</code> to do DMA to or from an I/O port.
</p><p>
<code class="constant">MCA_DMA_MODE_16</code> to do 16bit transfers.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re15.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04.html">Up</a></td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top"><span>mca_set_dma_io</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
