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14<h1 align="left">MI_GetFreeWramSlot* <IMG src="../../image/TWL.gif" align="middle"></h1>
15<h2>Syntax</h2>
16
17<dl>
18  <dd>
19<CODE>#include &lt;twl/mi.h&gt;</CODE><BR>
20  <BR>
21  <CODE>u8 MI_GetFreeWramSlot( <A href="../mi_constant.html">MIWramPos</A> wram );</CODE><br>
22  <BR>
23  <CODE>(#define)</CODE><br>
24  <CODE>MI_GetFreeWramSlot_A();</CODE><br>
25  <CODE>MI_GetFreeWramSlot_B();</CODE><br>
26  <CODE>MI_GetFreeWramSlot_C();</CODE><br>
27  </dd>
28</dl>
29<h2>Arguments</h2>
30<TABLE border="1">
31  <TBODY>
32    <TR>
33      <TD><B><I>wram</I></B></TD>
34      <TD>The WRAM to get information about.</TD>
35    </TR>
36  </TBODY>
37</TABLE>
38<h2>Return Values</h2>
39<p>Returns information about the slots within the specified WRAM that are not reserved for or allocated by any processor. Returns slot values between 0-3 for WRAM-A, or returns slot values between 0-7 for WRAM-B and WRAM-C.</p>
40<H2>Description</H2>
41<P>Gets information about the slots within the specified WRAM that are not reserved for or allocated by any processor.</P>
42<P>The separate <CODE><A href="MI_IsWramSlotUsed.html">MI_IsWramSlotUsed()</A></CODE> has been created for finding out whether a single slot has been assigned.</P>
43<P><BR> <B>About the return values:</B></P>
44<p>The lower bits of the u8 value indicate slot 0, slot 1, and so on (in order). If a given bit is 1, it means that the corresponding slot is neither reserved nor allocated.</p>
45<p>For example, if the return value of <CODE>MI_GetFreeWramSlot( MI_WRAM_B )</CODE> is <CODE>0xC0</CODE> (11000000 in binary), this indicates that WRAM-B slots 0, 1, 2, 3, 4, and 5 have either been reserved for or allocated by some processor, and that slots 6 and 7 have not been reserved for or allocated by any of the processors.</p>
46<BLOCKQUOTE><IMG src="image_allocatable1.gif" width="226" height="163" border="0"></BLOCKQUOTE>
47<P><BR> <B>Convenience functions that include the WRAM type in the function name:</B></P>
48<P><CODE>MI_GetFreeWramSlot_A(...)</CODE> is the <CODE>#define</CODE> directive of <CODE>MI_GetFreeWramSlot( MI_WRAM_A, ... )</CODE>.<BR><CODE>MI_GetFreeWramSlot_B(...)</CODE> is the <CODE>#define</CODE> directive of <CODE>MI_GetFreeWramSlot( MI_WRAM_B, ... )</CODE>.<BR><CODE>MI_GetFreeWramSlot_C(...)</CODE> is the <CODE>#define</CODE> directive of <CODE>MI_GetFreeWramSlot( MI_WRAM_C, ... )</CODE>.<BR>
49
50
51<h2>Internal Operation</h2>
52<p>The WRAM manager managed by the ARM9 determines the return value.<BR>The ARM7 gets values from the ARM9 through PXI.</p>
53<p>This function is implemented by specifying <CODE>MI_WRAM_FREE</CODE> as the processor type of the <CODE><A href="MI_GetAllocatableWramSlot.html">MI_GetAllocatableWramSlot</A></CODE> function. </p>
54<h2>See Also</h2>
55<P><A href="about_Wram.html">Overview (Work RAM)</A>, <A href="../mi_constant.html">MI-Related Constants</A><BR> <CODE><A href="MI_GetAllocatableWramSlot.html">MI_GetAllocatableWramSlot</A>, <A href="MI_GetUsedWramSlot.html">MI_GetUsedWramSlot</A></CODE><BR> <CODE><A href="MI_IsWramSlotUsed.html">MI_IsWramSlotUsed</A></CODE></P>
56
57<H2>Revision History</H2>
58<P>2008/05/29 Initial version.</P>
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