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study/sabre/os/files/ProtectedMode/DPMI1.0Spec/api/310c01.html

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+<h2>Terminate and Stay Resident
+<img src="../1.0.gif" alt="[1.0]" width=22 height=17></h2>
+
+A resident service provider uses this function after its
+initialization to terminate execution while leaving its protected mode
+memory (and optionally some real mode memory) allocated.<p>
+
+<b>Call With</b><br>
+<img src="r/ax+bl+dx.gif" alt="" width=245 height=59><br>
+
+AX     = 0C01H<br>
+BL     = return code<br>
+DX     = number of paragraphs (16-byte blocks) of DOS
+memory to reserve<p>
+
+<b>Returns</b><br>
+
+Nothing (this call never returns)
+
+<h2>Notes</h2><ul>
+
+
+<li>This function should only be used by DPMI clients which only
+provide resident services to other DPMI protected mode clients.  If
+the objective is only to provide resident services to real mode
+programs, the client should use the DPMI translation service <a
+href="310300.html">Int 31H Function 0300H</a> to invoke DOS's Int 21H
+Function 31H directly.<p.
+
+<li>The value in DX only specifies the size of DOS allocated memory to
+reserve.  Any protected mode memory owned by the program remains
+allocated unless it is explicitly released before executing this
+function.  Note that the value in DX must either be 0 or a minimum of
+6.  If DX is 0, the DPMI host executes a DOS real mode terminate
+function (Int 21H Function 4CH), and no real mode memory is reserved.
+If DX is nonzero, the DPMI host requests the DOS real mode
+terminate-and-stay-resident function (Int 21H Function 31H).<p>
+
+
+<li>If the client has not made a prior call to <a
+href="310c00.html">Int 31H Function 0C00H</a>, the client will simply
+be terminated.<p>
+
+<li>For further details on programming of resident service providers,
+see <a href="../ch4.8.html">that page</a>.<p>
+
+</ul>
+
+