Source : Free On-Line Dictionary of Computing

Active Reconfiguring Message
     
         (ARM) An efficient mechanism which allows
        reconfiguration of the hardware logic of a system according to
        the particular data received or transmitted.
     
        In ARM each message contains extra information in a
        Reconfiguring {Header} in addition to the data to be
        transferred.  Upon arrival of the message the Reconfiguring
        Header is extracted, decoded and used to perform on-the-fly
        hardware reconfiguration.  As soon as the hardware has been
        reconfigured the data information of the message can be
        processed.
     
        [In what contect is this term used?]
     
        (1997-06-06)