This paper deals with a common verification methodology and environment for SystemC BCA and RTL models. The aim is to save effort by avoiding the same work done twice by different people and to reuse the same environment for the two design views. Applying this methodology the verification task starts as soon as the functional specification is signed off and it runs in parallel to the models and design development. The verification environment is modeled with the aid of dedicated verification languages and it is applied to both the models. The test suite is exactly the same and thus it's possible to verify the alignment between the two models. In fact the final step is to check the cycle-by-cycle match of the interface behavior. A regression tool and a bus analyzer have been developed to help the verification and the alignment process. The former is used to automate the testbench generation and to run the two test suites. The latter is used to verify the alignment between the two models comparing the waveforms obtained in each run. The quality metrics used to validate the flow are full functional coverage and full alignment at each IP port.