Int 6F Fn 0402  - Hp Vectra Ex-bios - "f_io_ctrl Sf_disable_svc" - Mask 8  [b]

   AX = 0402h
   BP = 001Eh (driver ID for V_S8259)

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

See Also: AH=00h"HP Vectra",AX=0400h/BP=001Eh,AX=0406h/BP=001Eh

See Also: AX=040Ah/BP=001Eh