DOS/32 Advanced DOS Extender - Programmer's Reference
2.44 - DPMI function 0801h - Free Physical Address Mapping
Releases a mapping of physical to linear addresses that was previously obtained with the Physical Address Mapping DPMI function 0800h.
||AX = 0801h
BX:CX = linear address returned by physical address mapping call
AX = error code
8025h - invalid linear address
a) The client should call this function when it is finished using a device previously mapped to linear addresses with the Physical Address Mapping DPMI function 0800h.
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