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<TITLE>Int 2F/AX=1600h
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Int 2F/AX=1600h - -
INT 2F - MS Windows - WINDOWS ENHANCED MODE INSTALLATION CHECK
AX = 1600h
Return: AL = status
00h neither Windows 3.x enhanced mode nor Windows/386 2.x running
01h Windows/386 2.x running
80h XMS version 1 driver installed (neither Windows 3.x enhanced
mode nor Windows/386 2.x running) (obsolete--see note)
FFh Windows/386 2.x running
AL = anything else
AL = Windows major version number = 3
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<h2>Int 2F/AX=1600h
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<PRE>
INT 2F - MS Windows - WINDOWS ENHANCED MODE INSTALLATION CHECK
AX = 1600h<br>
<p><b>Return:</b><br>AL = status
00h neither Windows 3.x enhanced mode nor Windows/386 2.x running
01h Windows/386 2.x running
80h XMS version 1 driver installed (neither Windows 3.x enhanced
mode nor Windows/386 2.x running) (obsolete--see note)
FFh Windows/386 2.x running
AL = anything else
AL = Windows major version number >= 3
AH = Windows minor version number
</PRE>
<p><b>Notes:</b>
INT 2F/AH=16h comprises an API for non-Windows programs (DOS device
drivers, TSRs, and applications) to cooperate with multitasking
Windows/386 2.x and Windows 3.x and higher enhanced mode..
Certain calls are also supported in the Microsoft 80286 DOS extender in
Windows standard mode.
This function served as the installation check and AX=1610h served to
get the driver entry point for XMS version 1, which is now obsolete.
Use AX=4300h and AX=4310h instead.
Windows95 reports version 4.00, Windows95B reports version 4.03
<p><b>See Also:</b>
<a href="rb-4519.htm" tppabs="http://www.ctyme.com/intr/rb-4519.htm">AX=160Ah</a> - <a href="rb-4524.htm" tppabs="http://www.ctyme.com/intr/rb-4524.htm">AX=1610h</a> - <a href="rb-4765.htm" tppabs="http://www.ctyme.com/intr/rb-4765.htm">AX=4300h</a> - <a href="rb-4800.htm" tppabs="http://www.ctyme.com/intr/rb-4800.htm">AX=4680h</a>
<PRE>
<p><b>Index:</b><br>Installation check;XMS version 1
</PRE>
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