RBIL61 - INT 31 - DPMI 1.0+ - FREE PHYSICAL ADDRESS MAPPING {protected mode}

INT 31 P - DPMIsee DOS Protected-Mode Interface 1.0+ - FREE PHYSICAL ADDRESS MAPPING
	AX = 0801h
	BX:CX = linear address returned by AX=0800h
Return: CF clear if successful
	CF set on error
	    AX = error code (8025h) (see #03143)
Note:	should be called at end of access to device mapped with AX=0800h
SeeAlso: AX=0508h,AX=0509h,AX=0800h,INT 21/AX=EB03h