Int 15 Fn 2304  u - Ibm Bios - Smart Energy System - System Setup          [B]

   AX = 2304h
   DX = segment of 32K buffer

Return: CF clear if successful
       AX = 0003h (left over from setting video mode 3)
       BX,CX,DX,BP,DS,ES destroyed
   CF set on error
       AH = error code (80h,86h)
Desc:  run system setup utility, and optionally save any changed settings to
     CMOS RAM

Note:  IBM classifies this function as optional

See Also: AX=2301h,AX=2305h