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opengeode 0.99

A tiny, free SDL editor for TASTE

Latest Version: 1.5.2


OpenGEODE is a tiny open-source SDL editor that is developed for the purpose of providing an easy to use and free state machine editor and Ada code generator to the TASTE toolchain from the European Space Agency, running in combination with ESA’s ASN.1 “Space Certifiable” ASN.1 compiler.

SDL is the Specification and Description Language (Z100 standard from ITU-T).

This is NOT related to the graphical Simple DirectMedia Layer libraries!

Visit for more information about SDL.



There are three majors dependencies for OpenGEODE:

  • Pyside (the Qt bindings for Python) and the ANTLR runtime to be
  • Python ANTLR Runtime
  • PyGraphviz

If you use pip to install OpenGEODE, these dependencies should be installed automatically. However, note that installing PySide from pip requires some work and is not straightforward.

If you are using a Linux Debian-based distribution (including Ubuntu), I would recommended to install PySide using your package manager: You should also install pygraphviz using the same method, for convenience.

$ sudo apt-get install python-pyside pyside-tools python-pygraphviz

And to install pip:

$ sudo apt-get install pip

The Python 2.7 ANTLR 3.1.3 runtime is not part of Debian packages. Install it with pip (or download and install manually the package):

$ pip install antlr_python_runtime

On Windows:

You need to download and install Python, Pyside, and pip (binaries are available on respective websites)

On FreeBSD:

PySide is available through the ports. You can also use easy_install to install it. Use pip to install the ANTLR runtime (see above)

Installation from source

You can get the source from the TASTE repositories or from GitHub

$ svn co opengeode

Then as root, type:

$ make install

Information and contact

OpenGEODE is part of the TASTE project.

Find more information and download at

OpenGEODE is developed and maintained by Maxime Perrotin maxime (dot) perrotin (at) esa (dot) int

The background pattern was downloaded from

The ASN.1 compiler (ASN1Scc) that OpenGEODE is based on was developed by George Mamais and Thanassis Tsiodras for the European Space Agency. Information at


License is LGPL (see file LICENSE) The fonts are the fonts from Ubuntu, check licence in file FONT-LICENSE.TXT


0.99 (28/02/2014)
  • Refactoring of the backend engine, now using singledispatch
  • Minor bugfixes
0.98 (08/07/2014)
  • Added support for FOR loops In a task, use “for x in range([start], stop, [range]): … endfor” or “for x in sequenceOfvariable: … endfor”
  • Default symbol size is smaller
  • Various minor bugfixes
0.97 (07/12/2013)
  • added support for default value when declaring a variable e.g. DCL myVar myType ::= { x 5, y 2 }; default value must be a ground expression
File Type Py Version Uploaded on Size
opengeode-0.99.tar.gz (md5) Source 2014-03-07 1MB