INT 7F - Alloy NTNX (Host) - GET INTERRUPT VECTORS
        AH = 08h
        CL = function
            00h get original interrupt vector
            01h get Network Executive interrrupt
        AL = interrupt number
        DX:SI -> DWORD to hold interrupt vector
Return: AL = status
            00h successful
            01h interrupt vector not used by network executive
            02h invalid subfunction
Note:   the network executive uses interrupts 02h,08h,09h,0Fh,10h,13h,16h-19h,
          1Ch,20h,28h,2Ah,2Fh,5Bh,67h,7Fh,ECh, and F0h-FFh
SeeAlso: INT 21/AH=35h