INT 33 - MS MOUSE v3.0+ - EXCHANGE INTERRUPT SUBROUTINES

	AX = 0014h
	CX = call mask (see #03171)
	ES:DX -> FAR routine
Return: CX = call mask of previous interrupt routine
	ES:DX = FAR address of previous interrupt routine
SeeAlso: AX=000Ch,AX=0018h