Int 16 Fn E007  - Ami Bios - Bios-flash Interface - Flash Write Enable     [b]

   AX = E007h

Return: CF clear if successful
       AL = FAh
   CF set on error

Note:  this function performs any delay required to allow the Flash ROM to
     stabilize in the write-enabled state

See Also: AX=E000h,AX=E005h,AX=E006h,AX=E008h