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sva-assertions

Testing & Quality
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Specialized skill for creating and debugging SystemVerilog assertions for FPGA verification

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SVA Assertions Skill

Overview

Expert skill for SystemVerilog Assertions (SVA) development, enabling formal property specification and verification for FPGA designs.

Capabilities

  • Write concurrent and immediate assertions
  • Create property specifications and sequences
  • Implement coverage properties (cover property)
  • Create assume properties for formal verification
  • Debug assertion failures with cause analysis
  • Generate assertion bind files
  • Optimize assertion performance
  • Integrate assertions with formal tools

Target Processes

  • sva-development.js
  • constrained-random-verification.js
  • uvm-testbench.js
  • verilog-systemverilog-design.js

Usage Guidelines

Assertion Types

  • Immediate Assertions: Use for procedural checks within always blocks
  • Concurrent Assertions: Use for temporal properties across clock cycles
  • Cover Properties: Use for functional coverage collection
  • Assume Properties: Use for formal verification constraints

Best Practices

  • Use $rose, $fell, $stable for edge detection
  • Apply disable iff for reset handling
  • Use |-> for overlapping implication, |=> for non-overlapping
  • Create reusable sequences for common patterns
  • Add meaningful labels to all assertions

Performance Optimization

  • Limit sequence length for simulation efficiency
  • Use local variables in sequences sparingly
  • Group related assertions in bind files
  • Consider assertion synthesis for emulation

Dependencies

  • SVA parser
  • Formal verification tool awareness
  • IEEE 1800-2017 SystemVerilog standard knowledge