INT 17 - Shamrock Software NET.24 v3.11+ - ENABLE/DISABLE API FUNCTIONS
        AX = 2400h
        DL = new state
            00h disabled
            01h enabled
Return: DL = 24h if installed
        DH = minor version number
        CX = network address of this machine
        AL = status
            00h successful
            01h timeout
            02h header error
            03h data error
            04h busy
            05h invalid parameters
SeeAlso: AX=2403h,INT 16/AX=4500h

.