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Int 67/AH=57h - LIM EMS 4.0 - MOVE/EXCHANGE MEMORY REGION -
AH = 57h
AL = subfunction
00h move memory region
01h exchange memory region
DS:SI - structure describing source and destination (see #03653)
Return: AH = status (see #03652)
Note: source and destination may overlap for a move, in which case the copy
direction is chosen such that the destination receives an intact copy
of the source region
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<h2>Int 67/AH=57h
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<h3><font color=#C00040>LIM EMS 4.0 - MOVE/EXCHANGE MEMORY REGION</font></h3>
<PRE>
AH = 57h
AL = subfunction
00h move memory region
01h exchange memory region
DS:SI -> structure describing source and destination <a href="rb-7440.htm#Table3653" tppabs="http://www.ctyme.com/intr/rb-7440.htm#Table3653">(see #03653)</a><br>
<p><b>Return:</b><br>AH = status (see #03652)
</PRE>
<p><b>Note:</b>
Source and destination may overlap for a move, in which case the copy
direction is chosen such that the destination receives an intact copy
of the source region
<PRE>
<p>
<a name=table3652></a>
(Table 03652)
Values for EMS function status:
00h successful
80h internal error
81h hardware failure
83h invalid handle
84h undefined function requested
8Ah invalid logical page number encountered
8Fh undefined subfunction
92h successful, but a portion of the source region has been overwritten
93h length of source or destination region exceeds length of region
allocated to either source or destination handle
94h conventional and expanded memory regions overlap
95h offset within logical page exceeds size of logical page
96h region length exceeds 1M
97h source and destination EMS regions have same handle and overlap
98h memory source or destination type undefined
A2h attempted to wrap around 1M conventional address space
<p>
Format of EMS copy data:
<a name=table3653></a>
Offset Size Description (Table 03653)
00h DWORD region length in bytes
04h BYTE source memory type
00h conventional
01h expanded
05h WORD source handle (0000h if conventional memory)
07h WORD source initial offset (within page if EMS, segment if convent)
09h WORD source initial segment (conv mem) or logical page (EMS)
0Bh BYTE destination memory type
00h conventional
01h expanded
0Ch WORD destination handle
0Eh WORD destination initial offset
10h WORD destination initial segment or page
</PRE>
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<b>Category: <a href="cat-024.htm" tppabs="http://www.ctyme.com/intr/cat-024.htm">
Memory Management</a>
- <a href="int-67.htm" tppabs="http://www.ctyme.com/intr/int-67.htm">
Int 67h</a>
- <a href="alpha-l.htm" tppabs="http://www.ctyme.com/intr/alpha-l.htm">
L</a>
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