Ptolemy Group Software Development

The following list summarizes the software currently being developed by the Ptolemy Group.

Links to other local pages of interest:

Many potential software development plans are summarized as research summaries.

The Possible Undergraduate or Masters Projects page lists many areas of development.

Ptolemy II

We have begun the design of the key Java infrastructure that will support the design of distributed adaptive signal processing systems. The core of this design is a set of classes fashioned after the core of Ptolemy that support hierarchical graphs as an abstract data structure. Many specializations, for example to process networks, are possible. We plan PN to be the first implemented specialization since it promises to give us the most benefit from Java Threads.

See the Ptolemy II page for more information about the Java Ptolemy Kernel.

We are using Tcl Blend, the Tcl/Java interface for testing the Java Ptolemy kernel.

Development in C++ Ptolemy

Ptolemy II is to be released in October, 1998.
Ptolemy 0.7.1 was released on June 12, 1998.

Future work in the C++ Version of Ptolemy include:

Expansion of the Adaptive Computing Systems (ACS) domain
Release of a shrinkwrapped version of Ptolemy under NT

The minor changes below might appear in a future version of C++ Ptolemy:

Tk replacement for xv.
Upgrade the Gantt chart.
TkText star in CGC domain.
Make the FIR filter stars in the CG56 and C50 domains support multirate functionality present in the SDF and CGC versions
Modify CGC TkMonoIn and CGC TkMonoOut so that they have radio buttons for the sources, rates etc.
Modify ptlang to support radio-button style parameters for stars. Then substitute the Tycho EntryQuery object in place of the Pigi edit-params window.
Extend the CGC domains to support the TMS302C30 as a target and download cross-compiled code to either a C30 simulator or C30 board.
Extend the C50 domain to download code to a C50 board -- Luis Gutierrez got this working under Linux if you run Ptolemy as the super user.
New SDF and CGC Neural network stars, galaxies, and demos - Biao Lu and Brian Evans
New SDF, CGC, CG56, and C50 DTMF decoding demonstrations and DTMF ITU standard tester - Matt Felder, Jimmy Mason, and Brian Evans
Signal Processing Packages for Mathematica to derive new algorithms as algebraic formulas and convert the formulas to textual descriptions of Ptolemy systems in a form suitable for the Ptolemy interpreter
Modify the class hierarchy for wormholes so that a wormhole can schedule itself for future execution if the outside scheduler supports that.

Last updated 08/05/98. Send comments to www@ptolemy.eecs.berkeley.edu.