Int 2F Fn 5401  U - Power.exe - Get/set Power Status                       [p]

   AX = 5401h
   BX = function
       0000h get status

       Return: BL = power management status
               bit 0: CPU idle
               bit 1: ???
       ???

Return: AX = function status
       0000h success
       else  error code

Note:  called by MS Windows 3.1 POWER.DRV

See Also: AH=53h,AX=5400h,AX=5402h,AX=5403h