from
The Free On-line Dictionary of Computing (8 July 2008)
Portable Scheme Interpreter
PSI
(PSI) A portable scheme interpreter by Ozan Yigit
<[email protected]>, David Keldsen and Pontus Hedman that
includes a simple {DAG} compiler and a {virtual machine}. It
can be used as an integrated extension {interpreter} in other
systems and allows easy addition of new primitives. There are
some unique debugging and tracing facilities. Acceptable
performance results from a fairly straight-forward
implementation. {Continuations} are fully and portably
supported and perform well. PSI is based on the simple
compilers and {virtual machine} in Kent Dbyvig's thesis.
The pre-release version conforms to {R4RS} with a number of
useful extensions.
(1993-02-19)