Stimulus Coverage
ConceptStimulus Coverage (SC) is a verification metric used to measure how thoroughly generated stimulus exercises ISA features and system behaviours. In RISC-V verification flows, automatically generated coverage models, including those produced by ImperasFC/ImperasSC, help expose coverage gaps and support coverage closure.
First seen 5/25/2026
Last seen 5/26/2026
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Definition
Stimulus Coverage (SC) is a coverage metric that measures how thoroughly verification stimulus has exercised ISA features and system behaviours. It is described alongside Functional Coverage (FC) as a way to assess the completeness of stimulus with respect to relevant architectural and system-level behaviours.
Role in RISC-V verification
NEIGHBORHOOD
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1 connectionsImperasSC is the stimulus coverage tool that auto-generates SystemVerilog coverage models for RISC-V ISA features.
CITATIONS
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[1] Stimulus Coverage is a metric that measures how thoroughly stimulus exercises ISA features and system behaviours. source
[2] Automatically generated coverage models such as those from ImperasFC/SC provide insight into coverage gaps. source
[3] ImperasFC/ImperasSC auto-generate SystemVerilog coverage models for RISC-V ISA features and provide detailed metrics. source
[4] Coverage closure is the process of achieving sufficient functional and code coverage to provide confidence that relevant design behaviours have been tested. source