217 lines
14 KiB
HTML
217 lines
14 KiB
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<TITLE>Int 21/AX=4402h/SF=00h
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<META NAME="Description" CONTENT="
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Int 21/AX=4402h/SF=00h - Memory Managers - GET API ENTRY POINT -
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AX = 4402h subfn 00h
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BX = file handle for device EMMXXXX0
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CX = 0006h (size of buffer in bytes)
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DS:DX - buffer for API entry point record (see #01512)
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first byte must be 00h on entry
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Return: CF clear if successful
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buffer filled (see #03603 at INT 67/AH=3Fh)
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CF set on error
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AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
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Notes: this function is supported by Microsoft EMM386.EXE v4.45+ and
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<h2>Int 21/AX=4402h/SF=00h
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<h3><font color=#C00040>Memory Managers - GET API ENTRY POINT</font></h3>
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<PRE>
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AX = 4402h subfn 00h
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BX = file handle for device "EMMXXXX0"
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CX = 0006h (size of buffer in bytes)
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DS:DX -> buffer for API entry point record <a href="rb-2847.htm#Table1512" tppabs="http://www.ctyme.com/intr/rb-2847.htm#Table1512">(see #01512)</a>
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first byte must be 00h on entry<br>
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<p><b>Return:</b><br>CF clear if successful
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buffer filled <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 #03603 at INT 67/AH=3Fh)
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CF set on error
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AX = error code (01h,05h,06h,0Dh) <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>Notes:</b>
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This function is supported by Microsoft EMM386.EXE v4.45+ and
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CEMM v5.10+, and is intended for use by MS Windows as it starts up.
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If no other program has hooked INT 67, an alternate installation
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check for CEMM is testing for the string
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"COMPAQ EXPANDED MEMORY MANAGER 386" at offset 14h in the INT 67
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handler's segment; if present, the word at offset 12h contains the
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offset of the API entry point
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<p><b>See Also:</b>
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<a href="rb-2848.htm" tppabs="http://www.ctyme.com/intr/rb-2848.htm">AX=4402h/SF=01h</a> - <a href="rb-2849.htm" tppabs="http://www.ctyme.com/intr/rb-2849.htm">AX=4402h/SF=02h</a> - <a href="rb-2846.htm" tppabs="http://www.ctyme.com/intr/rb-2846.htm">AX=4402h"EMM386"</a> - <a href="rb-7414.htm" tppabs="http://www.ctyme.com/intr/rb-7414.htm">INT 67/AH=3Fh</a>
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<PRE>
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<p>
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Format of memory manager API entry point record:
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<a name=table1512></a>
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Offset Size Description (Table 01512)
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00h WORD ??? (0022h for CEMM 5.11, 0025h for MS EMM386 v4.45)
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02h DWORD manager's private API entry point
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<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 #01513,#03666 at INT 67/AX=FFA5h)
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<p>
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<a name=table1513></a>
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(Table 01513)
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Call CEMM v5.10+ entry point with:.
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AH = 00h get memory manager's state
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<p><b>Return:</b><br>AH = state
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<p><b>bit 0:</b><br>Turned OFF
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<p><b>bit 1:</b><br>AUTO mode enabled.
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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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<p><b>Return:</b><br>CF clear if successful
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CF set on error.
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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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<p><b>Return:</b><br>CF clear if successful
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CF set on error
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AH = error code (01h invalid subfunc, 02h no Weitek).
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AH = 05h get statistics
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???.
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AH > 06h
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<p><b>Return:</b><br>CF set
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AH = 01h (invalid function)
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</PRE>
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<p><b>Notes:</b>
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AH=03h,04h,06h are NOPs which return CF clear, presumably for backwards
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compatibility with earlier versions of CEMM.
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In v5.11, AH=05h merely prints an error message (using INT 21/AH=09h)
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stating that a different version of CEMM is installed and it is
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therefore not possible to display the statistics
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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-21.htm" tppabs="http://www.ctyme.com/intr/int-21.htm">
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Int 21h</a>
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M</a>
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