Program name:       A tiny Pascal Compiler Builder
 
Author name:        William A. Barret
 
Address:            QCAD Systems, Inc.
                    1164 Hyde Avenue
                    San Jose, CA  95129
 
 
Telephone Number:   800-538-9787 (408-727-6671 In CA)
 
Suggested Donation: $10 plus $2 shipping and handling
 
Program Description:
 
    In this program/article, they explain how to design and implement a
    small subset Pascal compiler, using the Turbo Pascal compiler and a
    couple of other software tools that you can purchase for a nominal
    charge.  It is capable of translating a Pascal subset program into 8086
    symbolic assembly language, which can then be assembled into a running
    program on an IBM PC.
 
    When you look at the tiny Pascal, it may strike you as being so
    ridiculously simple that it has no useful applications.  However, as it
    is explained, it provides all the important features of a high-level
    programming language, and can be extended indefinitely by writing more
    support functions.
 
    By reading this article, or better, by ordering the support software
    described at the end of this article, you will not only have your own
    extensible compiler going, but will have learned how language
    translators and compilers are organized and written.  So... carry on,
    please!
 
 
    Tiny Pascal Features
 
 
              * All four arithmetic operations in full expressions
                -- but on 16-bit integers only.
              * Assignment, IF-THEN-ELSE, BEGIN-END blocks, and WHILE-DO.
              * Functions with parameters
              * READ, WRITE, WRITELN with limited string support
              * Global variables
              * Integer literals