INT 7F - Alloy NTNX, MW386 - SET ACKNOWLEDGE ISR
        AH = 14h
        CL = 01h
        DX:DI -> application FAR acknowledge service routine (see below)
Return: AL = status (00h-03h) (see AH=12h)
Note:   the service routine will be called as soon as an acknowledgment arrives
SeeAlso: AH=12h,AH=14h/CL=00h,AH=14h/CL=04h,AH=15h/CL=04h

Service routine called with:
        DS:SI -> acknowledge structure (see AH=15h/CL=04h)
Return: AL = response code
            00h application busy, network executive should call again later
            01h acknowledge accepted
        AH,DX,SI may be destroyed

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