Download Formal Methods in Circuit Design by Victoria Stavridou PDF

By Victoria Stavridou

ISBN-10: 0521443369

ISBN-13: 9780521443364

The fast progress within the VLSI industry has intended that brands are stressed to bring more and more advanced, trustworthy, and value powerful items. Dependability is turning into a growing number of very important as pcs turn into an essential component of security severe platforms. Formal suggestions which have been utilized in software program verification have migrated into the area, the place for a number of purposes, they've been in a few respects extra profitable. This e-book analyzes the standards at the back of this good fortune and formulates a suite of standards opposed to which numerous techniques to verification could be judged. This comprises determining the standards and the problems affecting the economic use of formal equipment. Dr. Stavridou additionally offers an total viewpoint of the sector, offers case experiences of varied formalisms and eventually describes an algebraic method of the specification and verification of synchronous electronic structures. This designated booklet can be utilized via scholars and lecturers for classes in verification, through designers looking an advent to formal equipment, and via researchers drawn to algebraic specification.

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How do we add communication to our basic FSM model? The simplest way is to label the transitions with “action” names. Thus, each FSM is now defined as M ϭ (S, I, ⌺, →), where S is a finite set of states, I ⊆ S is the set of initial states, ⌺ is a collection of actions also called the action alphabet, and →⊆ S ϫ ⌺ ϫ S is the transition relation. Composition of FSMs is now defined as follows. Definition 3 (Composition of Communicating FSMs) Given two FSMs M1 ϭ (S1 , I1 , ⌺1 , →1 ) and M2 ϭ (S2 , I2 , ⌺2 , →2 ) their composition is defined as M ϭ (S1 ϫ S2 , I1 ϫ I2 , ⌺1 ∪ ⌺2 , →) Here S1 ϫ S2 is the set of states, I1 ϫ I2 is the set of initial states, and ⌺1 ∪ ⌺2 is the action alphabet.

Sometimes, model simulations can be used to achieve more ambitious goals. Multiple simulations can be carried out through a systematic exploration of the model, possibly ensuring some sort of structural coverage of the model. By such multiple simulations we can generate a suite of execution runs or test cases that give a clear idea about the set of behaviors captured by the model. 1 FSM Simulations Simulating one single FSM representing global system behavior is not particularly difficult. After all, an FSM naturally comes equipped with execution semantics, and we can exploit this execution semantics to guide our simulation.

The overall control flow of the system is obtained by any arbitrary interleaving of the control flows of the constituent processes. Interleaving is implicitly integrated into the definition of FSM composition — a composite state (s, t) makes a transition if and only if either s or t makes a transition in their local FSMs. In a broad sense, having a notion of interleaving integrated in the process composition is a useful thing to do. In particular, consider the system implementation as implementing the local FSMs in a distributed fashion.

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