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14<h1>OSPhysicalToUncached</h1>
15
16<h2>Syntax</h2>
17<dl><dd><pre class="construction">
18#include &lt;revolution/os.h&gt;
19
20void* OSPhysicalToUncached(u32 addr);
21</pre></dd></dl>
22
23<h2>Arguments</h2>
24<TABLE class="arguments" border="1" >
25  <tr>
26<TH>addr</TH>
27<TD>Physical address.</TD>
28  </tr>
29</TABLE>
30
31<h2>Return Values</h2>
32<p>Uncached address.</p>
33
34<H2>Description</H2>
35<P>Converts <SPAN class="argument">addr</SPAN> from a physical address into a non-cached address.</P>
36<P>
37<B>Note:</B> Uncached access is only supported for access in units of 4, 8, and 32 bytes. If you attempt to access in byte units other than these, a PI  <CODE>Unsupported transfer size</CODE> error occurs.
38</P>
39<h2>See Also</h2>
40<P class="reference">
41<a href="../toc.html#Address Conversion" target="contents">Address Conversion Functions</a><BR> <a href="OSUncachedToPhysical.html">OSUncachedToPhysical</a>
42</p>
43
44<H2>Revision History</H2>
45<P>
462009/07/13 Added a note about uncached access.<br>2006/03/01 Initial version.<br>
47</P>
48
49<hr><p>CONFIDENTIAL</p></body>
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