INT 15h,  43h (67)       Read System Status                       Convertible
 
    Reports the status of the system for the PC Convertible.
 
       On entry:      AH         43h
 
       Returns:       Carry      Set if error, else cleared
                      AH         Modified
                      AL         Status (see below)
 
  --------------------------------------------------------------------------
               Status (AL)
            7 6 5 4 3 2 1 0
            1 . . . . . . .       Low battery
            . 1 . . . . . .       Operating on external power source
            . . 1 . . . . .       Standby power lost
            . . . 1 . . . .       Power activated by real-time clock alarm
            . . . . 1 . . .       Internal modem power-on
            . . . . . 1 . .       Serial/parallel power-on
            . . . . . . 1 .       Reserved
            . . . . . . . 1       LCD not attached
  --------------------------------------------------------------------------
 
       Notes:         This service is available only for the PC
                      Convertible.
 
                      If the standby power is lost (bit 5 is on), then the
                      real-time clock time will be incorrect.
 
                      See INT 1Ah, Service 08h, for power-on using the
                      real-time clock alarm.

Seealso:


 INT 15h, 44h 
 INT 1Ah, 08h