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<TITLE>Int 21/AX=8400h
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Int 21/AX=8400h - European MS-DOS 4.0 - CREATMEM - CREATE A SHARED MEMORY AREA -
AX = 8400h
BX = size in bytes (0000h = 65536)
CX = flags
bit 6: zero-initialize segment
DS:DX - ASCIZ name (must begin with \SHAREMEM\)
Return: CF clear if successful
AX = segment address of shared memory global object
CF set on error
AX = error code (06h,08h) (see #01680 at AH=59h/BX=0000h)
Desc: create an area of memory which may be accessed by multiple processes
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<h2>Int 21/AX=8400h
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<h3><font color=#C00040>European MS-DOS 4.0 - CREATMEM - CREATE A SHARED MEMORY AREA</font></h3>
<PRE>
AX = 8400h
BX = size in bytes (0000h = 65536)
CX = flags
<p><b>bit 6:</b><br>Zero-initialize segment.
DS:DX -> ASCIZ name (must begin with "\SHAREMEM\")<br>
<p><b>Return:</b><br>CF clear if successful
AX = segment address of shared memory global object
CF set on error
AX = error code (06h,08h) <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)
</PRE>
<p><b>Desc:</b>
Create an area of memory which may be accessed by multiple processes
<p><b>Notes:</b>
Shared memory objects are created as special files (thus the
restriction on the name).
On successful creation, the reference count is set to 1
<p><b>See Also:</b>
<a href="rb-3247.htm" tppabs="http://www.ctyme.com/intr/rb-3247.htm">AX=8401h</a> - <a href="rb-3248.htm" tppabs="http://www.ctyme.com/intr/rb-3248.htm">AX=8402h</a> - <a href="rb-1700.htm" tppabs="http://www.ctyme.com/intr/rb-1700.htm">INT 15/AX=DE19h</a>
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<b>Category: <a href="cat-010.htm" tppabs="http://www.ctyme.com/intr/cat-010.htm">
DOS Kernel</a>
- <a href="int-21.htm" tppabs="http://www.ctyme.com/intr/int-21.htm">
Int 21h</a>
- <a href="alpha-e.htm" tppabs="http://www.ctyme.com/intr/alpha-e.htm">
E</a>
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