Int 31H Function 0801H

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Int 31H Function 0801H

Free Physical Address Mapping

Releases a mapping of physical to linear addresses that was previously obtained with the Physical Address Mapping function (Int 31H Function 0800H).

Call With

AX = 0801H
BX:CX = linear address returned by physical address mapping call

Returns

if function successful
Carry flag = clear

if function unsuccessful
Carry flag = set
AX = error code

8025H invalid linear address

The client should call this function when it is finished using a device previously mapped to linear addresses with the Physical Address Mapping function (Int 31H Function 0800H ).

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