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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<meta http-equiv="Content-Type"
content="text-html; charset=Windows-1252">
<title>INT 21,50 - Set Current Process ID (Undocumented DOS 2.</title>
<meta name="FORMATTER" content="Microsoft FrontPage 2.0">
</head>
<body>
<h1><a name="kap_interrupt_2390"></a>INT 21,50 - Set Current
Process ID (Undocumented DOS 2.x)</h1>
<p> AH = 50h</p>
<p> BX = process ID number (process ~PSP~ segment address)</p>
<p> returns nothing</p>
<p> - the process ID number is actually the segment address of a</p>
<p> program's PSP. This is useful for TSR's to access their own</p>
<p> file handle table inside their PSP.</p>
<p> - this function cannot be called while in an ~INT 28~ handler
in</p>
<p> DOS 2.x unless the critical error flag is set or stack
corruption</p>
<p> will occur</p>
<p> - safe in DOS 3.x INT 28 handlers since they use a different
stack</p>
<p> by default</p>
<p> - available in OS/2 compatibility box</p>
<p> - see ~INT 21,51~ ~INT 21,62~</p>
<hr>
<table border="0" width="100%" cols="3">
<tr>
<td width="33%">Zur<EFBFBD>ck zum <a href="inte1at0.htm">Interrupt
Info</a>. </td>
<td align="center" width="33%"><a
href="mailto:Roger.Morgan@htl-steyr.ac.at">Roger Morgan</a>
/ 1998 </td>
<td align="right" width="33%"><font size="1">L.<2E>nderung <!--webbot
bot="Timestamp" s-type="EDITED" s-format="%d.%m.%y"
startspan -->29.03.99<!--webbot bot="Timestamp" endspan
i-checksum="13964" --> </font></td>
</tr>
</table>
</body>
</html>