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README
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System Dynamic Simulation in Smalltalk
1. Introduction
1.1 What is SDS.
System Dynamic Simulator (SDS) program is a visual programming tool
for building and simulating dynamic system models.
SDS is written in SmallTalk 2.5 Parc-Place using Sun4-sparc. It is built
on top of Foible, which is a framework for visual programming development.
1.2 Installation Procedure
In order to install SDS, you should have a Smalltalk 2.5 from Parc-Place
running and Foible program available on your system. The following is a
step by step procedure to install SDS:
1. run smalltalk
2. load Foible.st
- in FoibleDirectory class, change the method 'iconDirectory' with
the correct Foible icon directory
3. load SDS.st
- in SDSDirectory class, change the method 'iconDirectory' with
the correct SDS icon directory
4. load SDS-Equations.st
5. load SDS-Graphs.st
6. load SDS-Tables.st
If you encounter undefined class error definitions when loading one of the
SDS-* files, you can ignore them since smalltalk always executes class
initialization when loading the class.
1.3 Examples
By now, you are ready to try SDS program. In the example directory, you will
find several *.stbin files which are example files for the simulator.
If you would like to start a new SDS program, execute the following in
Smalltalk workspace :
SDSView open.
If you are going to try one of the SDS examples, execute the following :
SDS openProgram.
SDS is a very similar to Stella program on the Macintosh. Most of the time
you will be able to learn how to use SDS by reading Stella manual.
SDS program is written by Herry Sutanto (sutanto@cs.uiuc.edu) and
Ignatius Setiadi (setiadi@cs.uiuc.edu) as a class project.