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7<TITLE>MI_SetMainMemoryPriority</TITLE>
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11<H1 align="left">MI_SetMainMemoryPriority <IMG src="../../image/NTR.gif" align="middle"><IMG src="../../image/TWL.gif" align="middle"></H1>
12<H2>Syntax</H2>
13<DL>
14  <DD><CODE>#include &lt;nitro/mi.h&gt;</CODE><BR>
15  <BR>
16  <CODE>void MI_SetMainMemoryPriority( MIProcessor proc )</CODE>
17</DL>
18<H2>Arguments</H2>
19<TABLE border="1" width="100%">
20  <TBODY>
21    <TR>
22      <TD width="13%"><EM><STRONG>proc</STRONG></EM></TD>
23      <TD width="87%">Access priority setting</TD>
24    </TR>
25  </TBODY>
26</TABLE>
27<H2>Return Values</H2>
28<P>None.</P>
29<H2>Description</H2>
30<P>This function sets the priority for access to the main memory. It sets the priority for instances when both ARM9 and ARM7 are accessed simultaneously. The argument <EM><STRONG><code>proc</code></STRONG></EM> is in <CODE>MIProcessor</CODE> enumeration format and has the following meanings:</P>
31<TABLE>
32  <TBODY>
33    <TR>
34      <TD bgcolor="#e0e0e0"><CODE>MI_PROCESSOR_ARM9</CODE></TD>
35      <TD bgcolor="#e0e0e0">Gives priority to ARM9.</TD>
36    </TR>
37    <TR>
38      <TD bgcolor="#e0e0e0"><CODE>MI_PROCESSOR_ARM7</CODE></TD>
39      <TD bgcolor="#e0e0e0">Gives priority to ARM7.</TD>
40    </TR>
41  </TBODY>
42</TABLE>
43<P>By default, priority is set to ARM7.</P>
44<P><FONT color="#ff3300">Caution: If you use this function to keep priority to ARM9, then there is a risk that ARM7 will stall and the wireless and sound processes will not behave normally.</FONT></P>
45
46<H2>Internal Operation</H2>
47<P>Accesses the <code>EXMEMCNT</code> I/O register <code>(0x4000204)</code>.</P>
48<H2>See Also</H2>
49<P><A href="MI_GetMainMemoryPriority.html"><code>MI_GetMainMemoryPriority</code></A>, <a href="../dma/MI_DispMemDmaCopy.html"><code>MI_DispMemDmaCopy</code></a>, <a href="../dma/MI_HBlankDmaCopy.html"><code>MI_HBlankDmaCopy</code></a></P>
50<H2>Revision History</H2>
51<P>2007/05/09 Added a Caution note to the description <BR>2004/08/26 Added <CODE>MI_DispMemDmaCopy</CODE> to See Also.<br> 2003/12/25 <CODE>enum</CODE> name changed to <CODE>MIProcessor</CODE>.<BR> 2003/12/18 Initial version.</P>
52<hr><p>CONFIDENTIAL</p></body>
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