Source : Free On-Line Dictionary of Computing

DPB
     
        /d*-pib'/ The {PDP-10} instruction "DePosit Byte" that inserts
        some bits into the middle of some other bits.  Hackish usage
        has been kept alive by the {Common LISP} function of the same
        name.
     
        [{Jargon File}]
     
        (1994-12-07)