0040h:00A0h           Wait Active Flag

    Length: 1 byte

    Reports the current status of the real-time clock wait services.


        Wait Active Flag
        7 6 5 4 3 2 1 0
        x . . . . . . .      Wait Time elapsed and posted
        . x x x x . . .      Reserved
        . . . . . x . .      Power on by Alarm pending
        . . . . . . x .      User Alarm Int 4Ah pending service
        . . . . . . . x      Interval wait currently active

    See Int 15h, Services 83h and 86h, for more details on services
    that use the WAIT ability.

    Bits 2 and 1 are valid only for the PC Convertible.