Int 6F Fn 3E  - Hp Vectra Ex-bios - "f_snd_tone" - Sound Tone With Freq A  [b]

   AH = 3Eh
   BP = 0012h (driver ID of V_SYSTEM)
   BX = frequency in Hz (1-25000, 0 = off)
   DX = duration in 10-microsecond increments

Return: AH = status (see #3415)
   BP,DS destroyed

See Also: AH=00h"HP Vectra",AH=3Ah/BP=0012h,AH=3Ch/BP=0012h,AH=40h/BP=0012h