Simplifying design and verification for structural hazards and datapaths in pipelined circuits

This paper describes a technique that automates the specification and verification of structural-hazard and datapath correctness properties for pipelined circuits. The technique is based upon a template for pipeline stages, a control-circuit cell library, a decomposition of structural hazard and datapath correctness into a collection of simple properties, and a prototype design tool that generates verification scripts for use by external tools. Our case studies include scalar and superscalar implementations of a 32-bit OpenRISC integer microprocessor.