资料来源 : Free On-Line Dictionary of Computing

Modula-2
     
         A high-level programming language designed by
        {Niklaus Wirth} at {ETH} in 1978.  It is a derivative of
        {Pascal} with well-defined interfaces between {module}s, and
        facilities for parallel computation.  Modula-2 was developed
        as the system language for the {Lilith} {workstation}.
     
        The central concept is the {module} which may be used to
        encapsulate a set of related subprograms and data structures,
        and restrict their visibility from other portions of the
        program.  Each module has a definition part giving the
        interface, and an implementation part.
     
        The language provides limited single-processor {concurrency}
        ({monitor}s, {coroutine}s and explicit transfer of control)
        and hardware access ({absolute address}es and {interrupt}s).
        It uses {name equivalence}.
     
        {DEC FTP archive
        (ftp://gatekeeper.dec.com/.1/DEC/Modula-2/m2.tar.Z)}.
     
        ["Programming in Modula-2", N. Wirth, Springer 1985].
     
        (1995-10-25)

Modula-2*
     
        An extension of {Modula-2} by M. Philippsen
         of the {University of Karlsruhe}.  It
        uses a superset of {data parallelism}, allowing both
        synchronous and asynchronous programs, both {SIMD} and {MIMD}.
        Parallelism may be nested to any depth.  There are version for
        {MasPar} and a simulator for the {SPARC}.
     
        {(ftp://iraun1.ira.uka.de/pub/programming/modula2star)}.
        E-mail: Ernst Heinz .
     
        ["Modula-2*: An Extension of Modula-2 for Highly Parallel,
        Portable Programs", W. Tichy et al, TR 4/90, U Karlsruhe, Jan
        1990].
     
        (1994-10-21)

Modula-2+
     
        {Modula-2} plus {exception}s and {thread}s developed by
        P. Rovner et al of {DEC} {SRC}, Palo Alto CA in 1984.
     
        ["Modula-2+ User's Manual", M-C van Leunen].
     
        ["Extending Modula-2 to Build Large, Integrated Systems",
        P. Rovner, IEEE Software 3(6):46-57 (Nov 1986)].
     
        (1994-10-21)