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<TITLE>Int 2F/AX=AE00h
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Int 2F/AX=AE00h - DOS 3.3+ internal - INSTALLABLE COMMAND - INSTALLATION CHECK -
AX = AE00h
DX = magic value FFFFh
CH = FFh
CL = length of command line tail (4DOS v4.0)
DS:BX - command line buffer (see #02977)
DS:SI - command name buffer (see #02978)
DI = 0000h (4DOS v4.0)
Return: AL = FFh if this command is a TSR extension to COMMAND.COM
AL = 00h if the command should be executed as usual
Notes: This call provides a mechanism for TSRs to install permanent
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<h2>Int 2F/AX=AE00h
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<h3><font color=#C00040>DOS 3.3+ internal - INSTALLABLE COMMAND - INSTALLATION CHECK</font></h3>
<PRE>
AX = AE00h
DX = magic value FFFFh
CH = FFh
CL = length of command line tail (4DOS v4.0)
DS:BX -> command line buffer <a href="rb-5189.htm#Table2977" tppabs="http://www.ctyme.com/intr/rb-5189.htm#Table2977">(see #02977)</a>
DS:SI -> command name buffer <a href="rb-5189.htm#Table2978" tppabs="http://www.ctyme.com/intr/rb-5189.htm#Table2978">(see #02978)</a>
DI = 0000h (4DOS v4.0)<br>
<p><b>Return:</b><br>AL = FFh if this command is a TSR extension to COMMAND.COM
AL = 00h if the command should be executed as usual
</PRE>
<p><b>Notes:</b>
This call provides a mechanism for TSRs to install permanent
extensions to the command repertoire of COMMAND.COM. It appears
that COMMAND.COM makes this call before executing the current
command line, and does not execute it itself if the return is FFh..
APPEND hooks this call, to allow subsequent APPEND commands to
execute without re-running APPEND
<p><b>See Also:</b>
<a href="rb-5190.htm" tppabs="http://www.ctyme.com/intr/rb-5190.htm">AX=AE01h</a>
<PRE>
<p>
Format of COMMAND.COM command line buffer:
<a name=table2977></a>
Offset Size Description (Table 02977)
00h BYTE max length of command line, as in INT 21/AH=0Ah
01h BYTE count of bytes to follow, excluding terminating 0Dh
N BYTEs command line text, terminated by 0Dh
<p>
Format of command name buffer:
<a name=table2978></a>
Offset Size Description (Table 02978)
00h BYTE length of command name
01h N BYTEs uppercased command name (blank-padded to 11 chars by 4DOS v4)
</PRE>
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<b>Category: <a href="cat-039.htm" tppabs="http://www.ctyme.com/intr/cat-039.htm">
Shells/Command Interpreters</a>
- <a href="int-2f-1.htm" tppabs="http://www.ctyme.com/intr/int-2F.htm">
Int 2Fh</a>
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