Welcome to the HADES simulation framework!

Overview

The first application of HADES will be to gate-level and RT-level simulation of digital circuits, but the potential range of applications is much broader. Because both the HADES simualation models and the simulation engine can be subclassed, and because all software in HADES is loaded dynamically via the Java class-loader, almost every aspect of HADES can be adapted to your needs. Key features of the HADES framework include:

• A fully visual user interface, combining traditional editing with interactive simulation and animation capabilities.
• Integration of timing-diagram (waveform) information for a simulation results.
• Fully object-oriented core design. This allows subclassing of simulation models, signals, and the core simulation engine.
• Full access to the simulation engine via a specified API. This allows to write your own debugging and interaction models on top of HADES. For example, we will provide a standard simulation model called 'design inspector' that allows to register combinations of value/action pairs to control the simulation.
• Scripting for all HADES commands.
• Full WWW-integration. Using Java's built-in TCP/IP and http-features, HADES is able to search, access, and install simulation models from the WWW, as well as to publish new models to the global model database.
• HADES designs may be hyperlinked. Unlike the hyperlinking features built on top of the state-of-the-art business graphics programs, HADES gives you full access to an simulation environment.
• Note that the HADES model database includes detailed version management, a feature not even found in the current CORBA standard. If you need WWW-based version management now, use HADES.

Contact:
Dr. Norman Hendrich
Fachbereich Informatik (Computer Science)
Universität Hamburg
Vogt-Kölln-Str. 30
D-22527 Hamburg
Germany

hendrich@informatik.uni-hamburg.de

Download

• The HADES class archive, complete with all HADES and JavaFIG classes, the basic gate-level simulation models, and some examples. Download this file, install to your CLASSPATH, and run!
  hades-011.jar (1.2MB)

• The HADES whitepaper, in compressed Postscript-format. hades-whitepaper.ps.gz

• The javadoc-generated class documentation for HADES. You can also browse the documentation from here.
  HADES class documetation, jar compressed (500KB).

Basic usage

System requirements

• Java Version 1.1.1 HADES makes full use of the advanced features of Java 1.1. Please make sure to install a Java 1.1.1 compatible Java virtual machine to your system, before trying to run HADES. It does not run under Java 1.0.2!.

• Application The current version of HADES will only run as an application, not as an applet. You will have to download and install the HADES class archive hades.jar to your system, before you can run HADES.

• Portability I hope that Java version 1.1 will be as portable as Sun Microsystems keeps promising. Note, that HADES has been tested only with JDK 1.1.2 and Visual Cafe on Solaris and Windows'95/NT. Please report all portability problems with other platforms to the mail-address given below (section hints).

• Running HADES Just to repeat the steps to run an Java-application:
  1. download the HADES class-archive (hades-011.jar)
  2. include a reference to the class-archive with your CLASSPATH variable. On Windows systems, you will have to specify something like this in your autoexec.bat file:
     set CLASSPATH=%CLASSPATH%;c:\where\you\installed\hades-011.jar;.
  3. run the Java interpreter with the main class of the application:
     java hades.gui.Editor>tt>
  4. have fun!
  5. report all errors!!