INT 14 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911./Yale EBIOS SERIAL I/O - INSTALLATION CHECK
	AX = F4FFh
	DX = port (00h-03h)
Return: CF clear if present
	    AX = 0000h
	CF set if not present
	    AX <> 0000h
SeeAlso: AH=36h"ComShare",AH=F9h,AH=FCh