UVM RAL · Topic
UVM RAL Debugging — Mirror Mismatches & Access Failures
Diagnosing register-layer failures — mirror mismatches, adapter conversion errors, map and offset problems, and access-policy surprises.
Almost every RAL failure reports as a mirror mismatch, and the mismatch is the symptom of four quite different causes: the adapter lost information, the predictor is in the wrong mode, the address map has the wrong offset, or the field's access policy means the value legitimately changed. Diagnosis is mostly about eliminating those in order, because the error message is identical in all four cases.