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Int 67/AH=5Bh - LIM EMS 4.0 - ALTERNATE MAP REGISTER SET -
AH = 5Bh
AL = subfunction
00h get alternate map register set
Return: BL = current active alternate map register set number
ES:DI - map register context save area if BL=00h
01h set alternate map register set
BL = new alternate map register set number
ES:DI - map register context save area if BL=0
02h get alternate map save array size
Return: DX = array size in bytes
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<h2>Int 67/AH=5Bh
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<h3><font color=#C00040>LIM EMS 4.0 - ALTERNATE MAP REGISTER SET</font></h3>
<PRE>
AH = 5Bh
AL = subfunction
00h get alternate map register set
<p><b>Return:</b><br>BL = current active alternate map register set number
ES:DI -> map register context save area if BL=00h
01h set alternate map register set
BL = new alternate map register set number
ES:DI -> map register context save area if BL=0
02h get alternate map save array size
<p><b>Return:</b><br>DX = array size in bytes
03h allocate alternate map register set
<p><b>Return:</b><br>BL = number of map register set; 00h = not supported
04h deallocate alternate map register set
BL = number of alternate map register set<br>
<p><b>Return:</b><br>AH = status (00h,80h,81h,84h,8Fh,9Ah-9Dh,A3h,A4h) (see #03656)
</PRE>
<p><b>Note:</b>
This function is for use by operating systems only, and can be
enabled or disabled at any time by the operating system
<PRE>
<p>
<a name=table3656></a>
(Table 03656)
Values for EMS function status:
00h successful
80h internal error
81h hardware malfunction
84h undefined function requested
8Fh undefined subfunction
9Ah specified alternate map register or DMA register set not supported
9Bh all alternate map register or DMA register sets currently allocated
9Ch alternate map register or DMA register sets not supported
9Dh undefined or unallocated alternate map register/DMA register set
9Eh dedicated DMA channels not supported
9Fh specified dedicated DMA channel not supported
A3h source array corrupted
A4h operating system denied access
</PRE>
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Memory Management</a>
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Int 67h</a>
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