INT 33 - LOGITECH MOUSE - SET PARAMETERS - SET MOUSE PORTIBM PC Portable (uses same BIOS as XT) (SERIAL MOUSE ONLY)
	AX = 256Ch
	BX = 0003h
	CX = port (1, 2)
Return: AX = FFFFh if driver installed for serial mouse
SeeAlso: AX=246Ch,AX=256Ch/BX=0000h,AX=256Ch/BX=0004h,AX=276Ch