Portable Standard Lisp (PSL) was a
tail-recursive dynamically bound dialect of
Lisp inspired by its predecessor, Standard Lisp and the Portable Lisp Compiler. It was developed by researchers at the
University of Utah in 1980, which released PSL 3.1; development was handed over to developers at
Hewlett-Packard in 1982 who released PSL 3.3 and up. Portable Standard Lisp was available as a kit containing a screen editor, a
compiler, and an
interpreter for the
68000 processor archictecture,
DEC-20s,
CRAY-1s, and the
VAX architecture (among many others). It compiled Lisp to
C code, which would run in a virtual machine language; so programs written in it would be as portable as C itself, which is very portable. The compiler itself was written in PSL or a more primitive dialect dubbed "System Lisp"/"SYSLISP" as "an experiment in writing a production-quality Lisp in Lisp itself as much as possible, with only minor amounts of code written by hand in assembly language or other systems languages", so the whole ensemble could
bootstrap itself, and improvements to the compiler improved the compiler itself as well. Its later releases had a compatibility package for
Common Lisp.
See more at Wikipedia.org...
<
language> (PSL) A dialect of
Lisp from
Utah University. PSL is available as a kit for
68000 and also runs on
VAX. It compiles
Lisp to
C-code
virtual machine language.
["The Portable Standard LISP Users Manual", TR-10, CS Dept, U Utah, Jan 1982].
["A Portable Lisp System", M.L. Griss et al, Proc 1982 ACM Symp on Lisp and Functional Prog, Aug 1982].
(2000-09-25)
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