introduces the key factors involved in the design of an embedded system, . area is today known as hardware/software codesign, providing a global view of the Basically, the automation of the global hw/sw design approach, that .. applications is the scope of SpecSyn, TOSCA, Co-Saw and Polis, while the activity of. Hardware-Software Co-Design of Embedded Systems: The POLIS Approach is Page – A formal specification model for hardware/software codesign. COSYMA (COSYnthesis for eMbedded micro Architectures) is a platform for Hardware-Software Co-Design of Embedded Systems: The Polis Approach.

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Codesign Tools

Ben Ismail, and A. Design of embedded systems can be subject to many different types of constraints, including timing, size, weight, power consumption, reliability, and cost. Each element of a network of CFSMs describes a component of the system to be modeled. Page – G. Therefore, we are developing a methodology for specification, automatic synthesis, and validation of this sub-class of embedded systems that includes the examples described above.

A priori definition of partitions, which leads to sub-optimal designs. Some important research issues in the development are cosimulation, partitioning, and synthesis.

The Polis Approach Kluwer international series in engineering and computer science: The Polis Approach F. Design is done in a unified framework, POLISwith a unified hardware-software representation, so as to prejudice neither hardware nor software implementation.


Generally, software is used for features and flexibility, while hardware is used for performance. A specification, often incomplete and written in non-formal languages, is developed and sent to the hardware and software engineers.

The synchronous approach to reactive and real-time systems. Designers often strive to make everything fit in software, and off-load only some parts of the design to hardware to meet timing constraints. The target architectures are organized in a target architecture library too.

Specification Language and Methodology Daniel D. Embedded systems are informally defined as a collection of programmable parts surrounded by ASICs and other standard components, that interact continuously with an environment through sensors and actuators.

The hardware and software components are derived from a single SDL-specification.

The Complete List of Publications of the Project. My library Help Advanced Book Search. The specification parts dedicated to hardware are then transformed into a VHDL description.

Hardware/Software Codesign Group

Today, embedded systems are designed with appfoach ad hoc approach that is heavily based on earlier experience with similar products and on manual design. The CFSM specification is a priori unbiased towards a hardware or software implementation.

These controllers utilize Micro-processors, Micro-controllers and Digital Signal Processors but are neither used nor perceived as computers.

For approacu and interactive design, we need to provide the following capabilities: The environment CoWare supports efficient heterogeneous co-simulation at different design levels by encapsulating the most appropriate simulation methods at those levels.

This permits the use of a broad range of target FPGA-architectures.

Lack of a well-defined design flow, which makes specification revision difficult, and directly impacts time-to-market. Other Papers by Dr. Due to te problems they want to solve, this project is more concentrated on the formal specification, formal verification and co-simulation.


Partitioning, Software generation, Hardware generation. Schedule validation for embedded reactive real-time systems. POLIS was initiated in as a research project at the University of California at Berkeley and, over the years, grew into a full design methodology with a software system supporting it. Your interest may be in simulation or synthesis, for instance.

A Framework for Hardware-Software Co-Design of Embedded Systems

Beginning with rather small target architectures and single input programs it has developed into a design system for fairly complex time constrained multi process systems and larger heterogeneous target architectures. In our opinion, none of them address satisfactorily the issues of unbiased specification and efficient automated synthesis for control-intensive reactive real-time systems. Gajski No preview available – This model is maintained throughout the design process, in order to preserve the formal properties of the design.

Polis Publications Chinook the tool is not available on-line Chinook is a hardware-software co-synthesis CAD tool for embedded systems. D thesis at UC Berkeley The abstract and table of content of the thesis: