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oldlinux-files/docs/interrupts/int-html/rb-5818.htm
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<TITLE>Int 31/AX=0100h
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Int 31/AX=0100h - DPMI 0.9+ - ALLOCATE DOS MEMORY BLOCK -
AX = 0100h
BX = number of paragraphs to allocate
Return: CF clear if successful
AX = real mode segment of allocated block
DX = first selector for allocated block
CF set on error
AX = DOS error code (07h,08h) (see #01680 at INT 21/AH=59h/BX=0000h)
(DPMI 1.0+) DPMI error code (8011h) (see #03143)
BX = size (in paragraphs) of largest available block
Notes: multiple contiguous selectors are allocated for blocks of more than 64K
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<h2>Int 31/AX=0100h
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<h3><font color=#C00040>DPMI 0.9+ - ALLOCATE DOS MEMORY BLOCK</font></h3>
<PRE>
AX = 0100h
BX = number of paragraphs to allocate<br>
<p><b>Return:</b><br>CF clear if successful
AX = real mode segment of allocated block
DX = first selector for allocated block
CF set on error
AX = DOS error code (07h,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 INT 21/AH=59h/BX=0000h)
(DPMI 1.0+) DPMI error code (8011h) <a href="rb-5802.htm#Table3143" tppabs="http://www.ctyme.com/intr/rb-5802.htm#Table3143">(see #03143)</a>
BX = size (in paragraphs) of largest available block
</PRE>
<p><b>Notes:</b>
Multiple contiguous selectors are allocated for blocks of more than 64K
if the caller is a 16-bit program.
Never modify or deallocate returned descriptors.
Not supported by MS Windows 3.0 in Standard mode
<p><b>See Also:</b>
<a href="rb-5819.htm" tppabs="http://www.ctyme.com/intr/rb-5819.htm">AX=0101h</a> - <a href="rb-5841.htm" tppabs="http://www.ctyme.com/intr/rb-5841.htm">AX=0501h</a>
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DOS Extenders</a>
- <a href="int-31.htm" tppabs="http://www.ctyme.com/intr/int-31.htm">
Int 31h</a>
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