183 lines
12 KiB
HTML
183 lines
12 KiB
HTML
<HTML>
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<HEAD>
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<TITLE>Int 21/AX=4B05h
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</TITLE>
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<META NAME="Description" CONTENT="
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Int 21/AX=4B05h - DOS 5+ - SET EXECUTION STATE -
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AX = 4B05h
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DS:DX - execution state structure (see #01625)
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Return: CF clear if successful
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AX = 0000h
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CF set on error
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AX = error code (see #01680 at AH=59h/BX=0000h)
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Note: used by programs which intercept AX=4B00h to prepare new programs for
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execution (including setting the DOS version number). No DOS, BIOS
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or other software interrupt may be called after return from this call
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before commencement of the child process. If DOS is running in the
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">
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<META NAME="robots" CONTENT="none">
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</HEAD>
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<BODY BGCOLOR="#FFD0A0">
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<center>
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<h2>Int 21/AX=4B05h
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</h2>
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</center><p>
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<td>
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<td><a href="int.htm" tppabs="http://www.ctyme.com/intr/int.htm">Interrups</a></td>
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<td><a href="cat.htm" tppabs="http://www.ctyme.com/intr/cat.htm">Categories</a></td>
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<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
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</td></table><p>
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<p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
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<h3><font color=#C00040>DOS 5+ - SET EXECUTION STATE</font></h3>
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<PRE>
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AX = 4B05h
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DS:DX -> execution state structure <a href="rb-2942.htm#Table1625" tppabs="http://www.ctyme.com/intr/rb-2942.htm#Table1625">(see #01625)</a><br>
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<p><b>Return:</b><br>CF clear if successful
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AX = 0000h
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CF set on error
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AX = error code <a href="javascript:if(confirm('http://www.ctyme.com/intr/rb-0000.htm \n\nThis file was not retrieved by Teleport Pro, because it was unavailable, or its retrieval was aborted, or the project was stopped too soon. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/intr/rb-0000.htm#Table0'" tppabs="http://www.ctyme.com/intr/rb-0000.htm#Table0"></a>(see #01680 at AH=59h/BX=0000h)
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</PRE>
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<p><b>Note:</b>
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Used by programs which intercept AX=4B00h to prepare new programs for
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execution (including setting the DOS version number). No DOS, BIOS
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or other software interrupt may be called after return from this call
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before commencement of the child process. If DOS is running in the
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HMA, A20 is turned off on return from this call.
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<p><b>See Also:</b>
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<a href="rb-2939.htm" tppabs="http://www.ctyme.com/intr/rb-2939.htm">AH=4Bh</a>
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<PRE>
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<p>
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Format of execution state structure:
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<a name=table1625></a>
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Offset Size Description (Table 01625)
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00h WORD reserved (00h)
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02h WORD type flags
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<p><b>bit 0:</b><br>Program is an .EXE
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<p><b>bit 1:</b><br>Program is an overlay
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04h DWORD pointer to ASCIZ name of program file
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08h WORD PSP segment of new program
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0Ah DWORD starting CS:IP of new program
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0Eh DWORD program size including PSP
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</PRE>
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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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- <a href="alpha-d.htm" tppabs="http://www.ctyme.com/intr/alpha-d.htm">
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D</a>
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<img src="lup.gif" tppabs="http://graphics.ctyme.com/gif/lup.gif" border=0 alt=Prev></a>
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<img src="ldown.gif" tppabs="http://graphics.ctyme.com/gif/ldown.gif" border=0 alt=Next></a>
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<td><a href="int.htm" tppabs="http://www.ctyme.com/intr/int.htm">Interrups</a></td>
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<td><a href="cat.htm" tppabs="http://www.ctyme.com/intr/cat.htm">Categories</a></td>
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<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
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</td></table><p>
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