174 lines
11 KiB
HTML
174 lines
11 KiB
HTML
<HTML>
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<HEAD>
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<TITLE>Int 21/AH=89h
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</TITLE>
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<META NAME="Description" CONTENT="
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Int 21/AH=89h - European MS-DOS 4.0 - SLEEP -
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AH = 89h
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CX = time in milliseconds or 0000h to give up time slice
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Return: CF clear if successful
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CX = 0000h
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CF set on error
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AX = error code (interrupted system call)
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CX = sleep time remaining
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Desc: suspend the calling process for the specified duration
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Notes: the sleep interval is rounded up to the next higher increment of the
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scheduler clock, and may be extended further if other processes are
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">
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<BODY BGCOLOR="#FFD0A0">
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<center>
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<h2>Int 21/AH=89h
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</h2>
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</center><p>
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<h3><font color=#C00040>European MS-DOS 4.0 - SLEEP</font></h3>
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<PRE>
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AH = 89h
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CX = time in milliseconds or 0000h to give up time slice<br>
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<p><b>Return:</b><br>CF clear if successful
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CX = 0000h
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CF set on error
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AX = error code (interrupted system call)
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CX = sleep time remaining
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</PRE>
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<p><b>Desc:</b>
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Suspend the calling process for the specified duration
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<p><b>Notes:</b>
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The sleep interval is rounded up to the next higher increment of the
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scheduler clock, and may be extended further if other processes are
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running.
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This call may be interrupted by signals (see AH=8Dh).
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Reportedly called by Microsoft C 4.0 startup code.
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Background processes have higher priority than the foreground process,
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and should thus periodically yield the CPU
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<p><b>See Also:</b>
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<a href="rb-3241.htm" tppabs="http://www.ctyme.com/intr/rb-3241.htm">AH=81h</a> - <a href="rb-1192.htm" tppabs="http://www.ctyme.com/intr/rb-1192.htm">INT 15/AX=1000h</a> - <a href="rb-4530.htm" tppabs="http://www.ctyme.com/intr/rb-4530.htm">INT 2F/AX=1680h</a> - <a href="rb-7852.htm" tppabs="http://www.ctyme.com/intr/rb-7852.htm">IN
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<p>
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<b>Category: <a href="cat-010.htm" tppabs="http://www.ctyme.com/intr/cat-010.htm">
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DOS Kernel</a>
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- <a href="int-21.htm" tppabs="http://www.ctyme.com/intr/int-21.htm">
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Int 21h</a>
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E</a>
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<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
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