0040h:0097h           Keyboard LED Status

    Length: 1 byte

    Contains the state of the keyboard LED.

        Keyboard LED Status

        7 6 5 4 3 2 1 0
        x . . . . . . .       Keyboard Transmit error
        . x . . . . . .       Mode Indicator update
        . . x . . . . .       Resend Receive flag
        . . . x . . . .       Received Acknowledgment
        . . . . x . . .       Reserved
        . . . . . x x x       Keyboard LED State bits