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9<title>OSGetMEM2ArenaHi</title>
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14<h1>OSGetMEM2ArenaHi</h1>
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16
17<h2>C Specification</h2>
18
19<dl>
20<dd><pre><CODE>#include &lt;revolution/os.h&gt;</CODE></pre></dd>
21<dd><pre><CODE>void* OSGetMEM2ArenaHi(void);</CODE></pre></dd>
22</dl><h2>Arguments</h2>
23
24<p>None.</p>
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26<h2>Return Values</h2>
27
28<p>The upper boundary of the arena.</p>
29<H2>Description</H2>
30<P>Gets the upper boundary of the arena in external main memory (MEM2 area).</P>
31
32<P><STRONG>Note:</STRONG>More than 12MB of the last half of the external main memory (MEM2 region) is reserved as a system work area for all device drivers. This memory region is already deducted from the address returned when <code>OSGetMEM2ArenaHi</code> is called during initial status. The size of reserved memory may change in the future. <P>
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34
35<h2>See Also</h2>
36
37<p><a href="../toc.html#Arena" target="contents">Arena Functions</a>, <CODE><a href="OSGetMEM2ArenaLo.html">OSGetMEM2ArenaLo</a>, <a href="OSSetMEM2ArenaHi.html">OSSetMEM2ArenaHi</a>, <a href="OSSetMEM2ArenaLo.html">OSSetMEM2ArenaLo</a>, <a href="OSGetMEM1ArenaHi.html">OSGetMEM1ArenaHi</a>, <a href="OSGetMEM1ArenaLo.html">OSGetMEM1ArenaLo</a>, <a href="OSSetMEM1ArenaHi.html">OSSetMEM1ArenaHi</a>, <a href="OSSetMEM1ArenaLo.html">OSSetMEM1ArenaLo</a></CODE></p>
38
39<h2>Revision History</h2>
40<P>
416/16/2006 Added notes regarding reserved memory.<BR>03/01/2006 Initial version.
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