CALL xxxxh:xxxxh - Microsoft Mouse Driver - Alternate Entry Point               
InstallCheck:	INT 33 must be non-NULL, and must not point at an IRET
	  instruction; the alternate entry point is located two bytes past
	  the INT 33 handler
Note:	this alternate entry point accepts the same arguments as the
	  INT 33 interface, but is invoked with a FAR CALL instead of INT 33.
SeeAlso: INT 33/AX=0000h