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<HTML>
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<HEAD>
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<TITLE>Int 67/AX=FFA5h
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</TITLE>
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<META NAME="Description" CONTENT="
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Int 67/AX=FFA5h - Microsoft EMM386.EXE v4.20+ - INSTALLATION CHECK -
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AX = FFA5h
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Return: AX = 845Ah/84A5h if loaded
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BX:CX - API entry point (see #03666)
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Notes: this call is available even if EMM386 is not providing EMS
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the returned AX is 845Ah inside of MSWindows, 84A5h under bare DOS
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if no other program has hooked INT 67, an alternate installation
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check is to test for the string
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MICROSOFT EXPANDED MEMORY MANAGER 386 at offset 14h in the INT 67
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handler's segment; the word immediately preceding this string
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contains the offset of the API entry point
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">
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</HEAD>
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<BODY BGCOLOR="#FFD0A0">
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<center>
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<h2>Int 67/AX=FFA5h
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</h2>
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</center><p>
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<table border=1 cellpadding=3 cellspacing=1>
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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>Microsoft EMM386.EXE v4.20+ - INSTALLATION CHECK</font></h3>
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<PRE>
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AX = FFA5h<br>
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<p><b>Return:</b><br>AX = 845Ah/84A5h if loaded
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BX:CX -> API entry point <a href="rb-7507.htm#Table3666" tppabs="http://www.ctyme.com/intr/rb-7507.htm#Table3666">(see #03666)</a>
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</PRE>
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<p><b>Notes:</b>
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This call is available even if EMM386 is not providing EMS.
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The returned AX is 845Ah inside of MSWindows, 84A5h under bare DOS.
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If no other program has hooked INT 67, an alternate installation
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check is to test for the string
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"MICROSOFT EXPANDED MEMORY MANAGER 386" at offset 14h in the INT 67
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handler's segment; the word immediately preceding this string
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contains the offset of the API entry point
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<p><b>See Also:</b>
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<a href="rb-7414.htm" tppabs="http://www.ctyme.com/intr/rb-7414.htm">AH=3Fh</a> - <a href="rb-7508.htm" tppabs="http://www.ctyme.com/intr/rb-7508.htm">AX=FFA5h/BX=4345h</a> - <a href="rb-2846.htm" tppabs="http://www.ctyme.com/intr/rb-2846.htm">INT 21/AX=4402h"EMM386.EXE"</a>
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<PRE>
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<p>
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<a name=table3666></a>
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(Table 03666)
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Call EMM386.EXE API entry point with:.
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AH = 00h get memory manager's status
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<p><b>Return:</b><br>AH = status
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<p><b>bit 0:</b><br>Not active (OFF)
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<p><b>bit 1:</b><br>In "Auto" mode.
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AH = 01h set memory manager's state
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AL = new state (00h ON, 01h OFF, 02h AUTO).
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AH = 02h Weitek coprocessor support
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AL = subfunction
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00h get Weitek support state
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<p><b>Return:</b><br>AL = status
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<p><b>bit 0:</b><br>Weitek coprocessor is present
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<p><b>bit 1:</b><br>Weitek support is enabled
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01h turn on Weitek support
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02h turn off Weitek support
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--- v4.20-4.41 only ---.
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AH = 03h Windows support???
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AL = subfunction (00h, 01h).
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AH = 04h print copyright notice to standard output
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(using INT 21/AH=09h).
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AH = 05h print available report
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(the one shown when running EMM386 from the DOS prompt)
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</PRE>
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<p><b>See Also:</b>
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#01513 at INT 21/AX=4402h/SF=02h - #02617 at INT 2F/AX=12FFh/BX=0106h
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<p>
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<b>Category: <a href="cat-024.htm" tppabs="http://www.ctyme.com/intr/cat-024.htm">
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Memory Management</a>
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- <a href="int-67.htm" tppabs="http://www.ctyme.com/intr/int-67.htm">
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Int 67h</a>
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- <a href="alpha-m.htm" tppabs="http://www.ctyme.com/intr/alpha-m.htm">
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M</a>
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</b><p><p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
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<table border=1 cellpadding=3 cellspacing=1>
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<td>
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<a href="rb-7506.htm" tppabs="http://www.ctyme.com/intr/rb-7506.htm">
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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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<!-- Bottom Link Start -->
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<center>
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<p><table border=1 bgcolor="#ffff99"><tr><td>
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<table border=0 height=80>
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<tr align=center><td width="65">
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