reference model comparison

Technique

Reference model comparison is a processor verification technique in which implemented processor behavior is checked against a reference model. It is useful when specifications leave some scenarios underspecified, because differences between the reference model and RTL prompt engineering analysis of whether the implementation behavior is acceptable.

First seen 5/27/2026

Last seen 5/27/2026

Evidence 1 chunks

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WIKI

Overview

Reference model comparison is a verification technique used in processor verification. The provided evidence states that most teams validate processor implementations by comparing implemented behavior against a reference model. When the reference model and RTL differ, engineers analyze whether the RTL behavior is acceptable.^[1]

Role in processor verification

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NEIGHBORHOOD

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RELATIONSHIPS

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Processor Verification ← uses 92% 1e

Most teams validate by comparing implemented behavior against a reference model.

RTL ← compares with 90% 1e

When the reference model and RTL differ, engineers analyze whether the RTL behavior is acceptable.

LINKED ENTITIES

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Processor Verification USES Extracted graph relationship

RTL COMPARES_WITH Extracted graph relationship

CITATIONS

4 sources

4 citations — click to collapse

[1] Most teams validate processor implementations by comparing implemented behavior against a reference model, and RTL/reference mismatches require engineering analysis. RISC-V Microarchitecture Verification Approaches

[2] Processor verification commonly uses a hybrid strategy that includes formal verification, simulation, UVM test platforms, test software, and integration-level validation. RISC-V Microarchitecture Verification Approaches

[3] Specifications may leave scenarios underspecified, such as simultaneous equal-priority interrupts, and different cores may make different microarchitectural choices. RISC-V Microarchitecture Verification Approaches

[4] Verification is never truly complete; sufficiency is commonly judged by manageable residual risk, and processor coverage alone is insufficient because instruction sequences and dynamic pipeline events must also be considered. RISC-V Microarchitecture Verification Approaches