Int 21 Fn 4B04  - Virus - "mg", "699"/"thirteen Minutes" - Installation C  [v]

   AX = 4B04h

Return: CF clear if "MG" resident
   AX = 044Bh if "699"/"Thirteen Minutes" resident

See Also: AX=4243h,AH=4Ah/BX=FFFFh,AX=4B21h