Int 2F Fn 7000  - License Service API - Installation Check                 [N]

   AX = 7000h
   CX = license server index (0000h to 001Fh)

Return: AL = status
       00h not installed
       FFh installed

Notes: The License Service API is being maintained by Microsoft but is being
     supported by a large number of companies including Apple, Banyan,
     DEC, HP, Lotus, Microsoft, Novell, Software Publishers Association,
     and Wordperfect (not a complete list!)
   Each license service provider must search for the next free index
     slot to use

See Also: AX=7001h,AX=7003h,AX=7004h,AX=7005h