INT 7F - Alloy ANSK, NTNX, MW386 - GET NETWORK EXECUTIVE TYPE
        AH = 25h
        CL = 01h
Return: CL = type
            00h RTNX
            01h ATNX
            02h NTNX
            03h BTNX
            04h MW386
            05h ANSK
SeeAlso: AH=25h/CL=00h

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