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<h2>
<a name="1207218"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">interrupt_uninstall</font>
</h2><hr>
<p>
<a name="1207219"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Uninstall an interrupt handler</font>
</p>
<h3>
<a name="1207220"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
</h3>
<a name="1221053"> </a><font size=2 face=Courier><strong>#include <interrup.h><br></strong></font>
<a name="1271143"> </a><font size=2 face=Courier><strong>int interrupt_uninstall( int <font size=2 face=Courier><strong><em>Number</em></strong></font>, int <font size=2 face=Courier><strong><em>Level </em></strong></font>);<br></strong></font>
<h3>
<a name="1221054"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
</h3>
<p>
<a name="1232331"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>int </strong></font><font size=2 face=Courier><strong><em>Number</em></strong></font></b></font>
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<dl><dl> <dl>
<dt> <a name="1232333"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Interrupt number</font>
</dl>
</dl></dl>
<p>
<a name="1232335"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>int </strong></font><font size=2 face=Courier><strong><em>Level</em></strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232337"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Interrupt level</font>
</dl>
</dl></dl>
<h3>
<a name="1207227"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Results</font>
</h3>
<p>
<a name="1207228"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Returns <font size=2 face=Courier><strong>0</strong></font> on success, <font size=2 face=Courier><strong>-1</strong></font> on failure.</font>
</p>
<h3>
<a name="1207229"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
</h3>
<p>
<a name="1207230"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">If the interrupt number or level are illegal, or no interrupt has been installed, then this fails.</font>
</p>
<h3>
<a name="1207231"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>
<p>
<a name="1207232"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This function allows an interrupt handler to be uninstalled. This then allows a replacement handler function to be installed as a replacement. No attempt is made to disable the interrupt, so before calling this function the interrupt must have been disabled at the peripheral level.</font>
</p>
<p>
<a name="1207233"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">On systems which do not have an interrupt level controller, specify the <font size=2 face=Courier><strong><em>Number</em></strong></font> parameter as <font face="Verdana, Arial, Helvetica, sans-serif"><b>1</b></font>.</font>
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<h3>
<a name="1207234"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Applies to</font>
</h3>
<p>
<a name="1207235"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">ILC-None, ILC-1, ILC-2, ILC-3</font>
</p>
<h3>
<a name="1207236"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Callable from</font>
</h3>
<p>
<a name="1207237"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Tasks only</font>
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<h3>
<a name="1207238"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">See also</font>
</h3>
<p>
<a name="1207239"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><a href="libs33.htm#1243070"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>interrupt_delete</i></font></a>, <a href="libs44.htm#1206829"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>interrupt_install</i></font></a></font>
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