PeaCE: Ptolemy extension as Codesign Environment
Soonhoi Ha, Seoul National University, Korea

PeaCE is a codesign environment for rapid development of heterogeneous digital systems targetting from system-on-chip (SOC) design to distributed heterogeneous system design. The PeaCE project aims to cover the multi-facets of codesign tasks: codesign of hardware and software modules, and codesign of control and function modules. Since it is built on top of Ptolemy (Ptolemy classic, not Ptolemy II), basically PeaCE inherits all nice features of Ptolemy: seamless integration of diverse models of computations, powerful simulation capabilities specially for DSP applications, and much more.

However, PeaCE differs from Ptolemy that it does not allow arbitrary integration of heterogeneous models of computation. Instead, PeaCE introduces the concept of "codesign backplane" that is the top-level model of computation (actually derived from DE model of computation). Control logic is specified with an extended FSM model (called, flexible FSM) that supports hierarchy, concurrency, internal event, and variable state. Computation modules are specified with an extended SDF model (called, SPDF) that supports controlled global state. Then, inter-model communications and synchronizations are performed through the codesign backplane. Even though it is developed as a University research project, it targets for applying a new design methodology in the real system design. To use PeaCE for a real system design, you have to customize the environment somewhat though we are making best efforts to minimize such customizing work for fast system development.