By Marc Boulé, Zeljko Zilic
Assertion-based layout is a strong new paradigm that's facilitating caliber development in digital layout. Assertions are statements used to explain houses of the layout (I.e., layout intent), that may be incorporated to actively fee correctness in the course of the layout cycle or even the lifecycle of the product. With the looks of 2 new languages, PSL and SVA, assertions have already began to enhance verification caliber and productivity.
This is the 1st publication that offers an “under-the-hood” view of producing statement checkers, and as such offers a special and constant standpoint on making use of assertions in significant components, corresponding to: specification, verification, debugging, online tracking and layout caliber improvement.
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Additional info for Generating hardware assertion checkers: for hardware verification, emulation, post-fabrication debugging and on-line monitoring
In this figure, propositions labeled above the states are true in those states, and false otherwise. When quantifiers over computation paths are added to the formulas of LTL, CTL is formed. CTL is not fully related to the themes in this book, and is only overviewed informally. The two quantifiers added in CTL are: A and E, indicating for all paths and there exists a path. 6 for illustration purposes, such that the nuance between linear temporal logic and computation tree logic can be better understood.
Assertions are typically bound to a design to be verified, which is called the source design. The ABV methodology is based on the fact that the observation of an assertion failure helps to identify design errors, which are then used as a starting point for the debugging process. The amount of assertions that should be added to the design depends on the amount of coverage desired. One question that arises often with new ABV practitioners is: How many assertions do I need to write? The answer is not 18 2 Assertions and the Verification Landscape an easy one.
PSL’s OBE operators allow the specification of there types of properties, but because they are not applicable to dynamic verification they are not treated here. Properties are also often categorized as either liveness or safety, or both in some cases. These qualifiers are defined next, inspired by their definitions in the PSL specification . The definition of safety is given first. 3. A safety property describes an invariant over the states in a design. A property is qualified as a safety property when its failure in a finite trace or path can not be undone by extending the said trace or path.