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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In addition, the graphical user interface is used to define target architectures and design constraints. Unlike most of the other tools cosyma, cosmos, etc.

Large heterogeneous systems are often composed of several components, such as microprocessors, dedicated hardware, external devices, and memories, interconnected by general or local buses, using a variety of communication protocols.

The main objective of COOL is heterogeneous implementation. Philip Koopman ‘s page for Embedded Communications.

There are many different academic approaches to try to solve the problem of embedded system design. The synchronous approach to reactive and real-time systems. Today, embedded systems are designed with an fodesign hoc approach that is heavily based on earlier experience with similar products and on manual design.

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

A specification, often incomplete and written in non-formal languages, is developed and sent to the hardware and software engineers. The description is also analyzed with a hardware estimator which writes the estimation result to the same database as the profilers.


Note this architecture is a “multicomponent architecture” which means the architecture is composed of programmable components processors possibly of different types and of non-programmable nardware-software ASIC, FPGA alltogether connected by communication media possibly of different types. Each element of a network of CFSMs describes a component of the system to be ejbedded. This is a tool focussed on real-time systems.

In our opinion, none of them address satisfactorily the issues of unbiased specification and efficient automated synthesis for control-intensive reactive real-time systems. Thus, the POLIS system which is a co-design environment for embedded systems is based on a formal model of computation. Formal verification hardware-softwade automatic synthesis of implementations are the surest ways to guarantee safety. The architecture of the system has to be provided by the user.

These controllers utilize Embedder, Micro-controllers and Digital Signal Processors but are neither used nor perceived as computers. So far, the system has mainly been used for design-space exploration where it gives fast response times which are not available in a purely manual design process.

The hardware and software components are derived from a single SDL-specification. Other Papers by Dr.

Hardware-software partition is decided a priori and is adhered to as much as is possible, because any changes in this partition may necessitate extensive redesign. It is closely related to DSP and Telecommunication. Some examples of applications of embedded controllers are: The difference between the two models is that the synchronous communication model of classical concurrent FSMs is replaced in the CFSM model by a finite, non-zero, unbounded reaction hardware-softwar.

Design of embedded systems can be subject to many different types of constraints, including timing, size, weight, power consumption, reliability, and cost.

My library Help Advanced Book Search. The POLIS Approach will be of interest to embedded system designers dodesign electronics, consumer electronics and telecommunicationsmicro-controller designers, CAD developers and students. It emmbedded not for circuit synthesis. For concurrent and interactive design, we need to provide the following capabilities: 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.


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.

Hardware/Software Codesign Group

Use of higher-level languages such as Hardward-software helps structure the design somewhat, but with increasing complexity it is not sufficient. The environment CoWare supports efficient heterogeneous co-simulation at different design levels by encapsulating the most appropriate simulation methods at those levels.

Due to the problems they want to solve, this project is more concentrated on the formal specification, formal verification and co-simulation. The environment also builds upon existing synthesis and compilation techniques by encapsulating them and supports system design flows by providing design methodology management support It generates software and hardware files.

They leave the decisions of partitioning and scheduling to the designers, and provide the designers with an environment to quickly evaluate their decisions through formal verification or system co-simulation. Generated hardware and software can be co-simulated before and after synthesis, behavioural and RT-level co-simulation.