File	Date	Author	Commit
user	2020-10-03	Daniel Weaver	[641a72] Point to version four of the simulator.
COPYING	2020-04-14	Daniel Weaver	[0aacc9] Initial commit
README	2020-04-14	Daniel Weaver	[0aacc9] Initial commit
comment.txt	2020-10-03	Daniel Weaver	[de1054] Add a descripton of the I/O format elements.
makefile	2020-10-03	Daniel Weaver	[1ca29a] Point to version 4 of the XPL compiler
spl.bnf	2020-04-14	Daniel Weaver	[0aacc9] Initial commit
spl.xpl	2020-09-20	Daniel Weaver	[c029c1] Implement the L format for both GET EDIT and PU...
xxpl.xpl	2020-06-21	Daniel Weaver	[e124ff] Move the MONITOR_LINK structure back to locatio...

Read Me

   Student Programming Language (SPL) compiles and executes programs written in a
subset of PL/I.  SPL was created by David B. Wortman in 1969 at Stanford University
as a teaching tool for beginning programmers.  In 1970 the compiler was modified
by Robin A. Vowels at Royal Melbourne Institute of Technology to be more compatible
with the PL/I language.  The compiler is written in XPL using an MSP parser.  XPL
is described in the book "A Compiler Generator" by McKeeman, Horning and Wortman.
   The SPL compiler takes the source code and generates a byte code which is
executed after the entire source stream has been processed.  This architecture
was beneficial on the IBM/360 because the compile and execution phase could
be run without additional program loads.
   In order to run the compiler you will need the IBM/360 simulator from the
SUNY Pascal project found here:  https://sourceforge.net/projects/suny-pascal/