App-Scheme79asm version 0.001001 ================================ SIMPLE is a LISP processor defined in the 1979 B paper by Steele and Sussman. The SIMPLE processor expects input in a particular tagged-pointer format. This module takes a string containing a sequence of S-expressions. Each S-expression is a list of one of three types: (tag value), for example (symbol nil), represents a value to be put in memory (for example a number, or a symbol, or a variable reference). (tag list), where list is of one of these three types, represents a tagged pointer. In this case, list is (recursively) laid out in memory as per these rules, and a pointer to that location (and tagged tag) is put somewhere in memory. (tag list1 list2), where list1 and list2 are of one of these three types (not necessarily the same type). In this case, list1 and list2 are (recursively) laid out in memory such that list1 is at position X and list2 is at position X+1, and a pointer of type tag and value X is put somewhere in memory. After this process the very last pointer placed in memory is moved to the special location 5 (which is where SIMPLE expects to find the expression to be evaluated). In normal use a single S-expression will be supplied, representing an entire program. INSTALLATION To install this module type the following: perl Makefile.PL make make test make install DEPENDENCIES This module requires these other modules and libraries: * Data::SExpression COPYRIGHT AND LICENCE Copyright (C) 2018 by Marius Gavrilescu This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.24.3 or, at your option, any later version of Perl 5 you may have available.