Source : Free On-Line Dictionary of Computing

VSCM
     
         A highly {portable} implementation of
        {Scheme}, written in {ANSI C} and {Scheme}.  VSCM features
        {exception} and {interrupt} handling, executable portable
        memory images, {coroutines} and {continuations} with multiple
        arguments.
     
        Portability is achieved by exclusive use of legal ANSI C
        features.
     
        Version II Nov9 by Matthias Blume 
        included {run-time support} and a {bytecode compiler}.  It
        conforms to R4RS and IEEE P1178 and runs on {Unix} and
        {Macintosh}.
     
        VSCM is no longer actively developed - the author recommends
        {StandardML}.
     
        {Home (http://www.cs.princeton.edu/~blume/vscm/)}.
     
        (2001-01-02)