Int 21 Fn 4BFF  - Virus - "ussr-707", "justice", "europe 92" - Installati  [v]

   AX = 4BFFh

Return: BL = FFh if "USSR-707" resident
   DI = 55AAh if "Justice" resident
   AX = 1234h if "Hitchcock.1238" resident
   CF clear if "Europe 92" resident

See Also: AX=4BFEh,AX=4BFFh"Cascade",AX=5252h