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 money correctness during 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 increase verification caliber and productivity.
This is the 1st booklet that offers an “under-the-hood” view of producing statement checkers, and as such offers a special and constant point of view on utilizing assertions in significant parts, resembling: specification, verification, debugging, online tracking and layout caliber improvement.
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Extra resources for Generating hardware assertion checkers: for hardware verification, emulation, post-fabrication debugging and on-line monitoring
The weak until can be defined 30 2 Assertions and the Verification Landscape using its strong counterpart, along with the always operator. def [ϕ1 W ϕ2 ] = [ϕ1 U ϕ2 ] ∨ G ϕ1 Additional operators such as the weak until are often called “syntactic sugaring” operators, and assertion languages such as PSL will also be shown to have their fair share of sugaring. In formal verification, LTL expressions are implicitly evaluated over all paths in the model, and as a whole, an LTL property is expected to hold in the initial state of the model.
This book presents the state-of-the-art techniques for constructing hardware checkers for modern assertion languages. 2 Uses of Assertions in Hardware 17 is centered upon PSL assertions, an entire chapter is devoted to SystemVerilog assertions and generating SVA checkers. Even though both languages are based on sequential regular expressions, differences in their property operators are more important. Both languages are suitable for simulation and formal verification; however, PSL does offer a wider variety of operators that are somewhat closer to linear temporal logic languages, whereas SVA is more tightly coupled to a design language and offers action blocks and local variables.
One of the pioneers of temporal logic is Pnueli, who first applied such formal temporal reasoning to programs . Temporal logic in hardware is based on the same set of operators as in software. For example, temporal logic is used to perform the model checking of concurrent programs using the SPIN tool , and is also used to verify hardware designs in the SMV model checker . Depending on the type of verification, whether static or dynamic, temporal properties can have certain differences that are not negligible.