Int 6F Fn 40  - Hp Vectra Ex-bios - "f_str_get_free_index" - Find Free St  [b]

   AH = 40h
   BP = 0012h (driver ID of V_SYSTEM)

Return: AH = status (see #3415)
   BX = next free string index
   BP,DS destroyed
Desc:  get the next string index available to user programs

See Also: AH=00h"HP Vectra",AH=42h/BP=0012h,AH=44h/BP=0012h,AH=46h/BP=0012h