Int 16 Fn E009  - Ami Bios - Bios-flash Interface - Flash De-select        [b]

   AX = E009h

Return: CF clear if successful
       AL = FAh
   CF set on error
Desc:  select the EPROM if the system contains both EPROM and Flash ROM

Note:  this function performs any delay required to allow the Flash ROM to
     stabilize in the de-selected state; if no EPROM is present, this
     function always returns successfully

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