Status Flags

      Has the following bit level definitions:

      High Byte

        Bit settings are as follows:

        Bits 7-2

          Reserved. Set to 0.
        Bit 1
          Set, if mouse data returned in mickeys
        Bit 0
          Set, if the interrupt level pointer draw routine is not called.
        Low Byte
          Bit settings are as follows:

          Bits 7-4

            Reserved. Set to 0.
          Bit 3
            Set, if pointer draw routine disabled by unsupported mode
          Bit 2
            Set, if flush in progress
          Bit 1
            Set, if block read in progress
          Bit 0
            Set, if event queue busy with I/O.
          A set bit is a value of 1.


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