A document on best practices for modeling buses for simulation and code generation can be found at the link below. Basic guidelines covers topics such as bus diagnostics, virtual buses, multi-rate buses, setting the initial value of bus signals, extracting non-virtual bus signals inside atomic subsystems, virtual bus signals crossing atomic boundaries, and arrays in buses. Advanced topics include initializing data with persistent information, working with bus arrays and reusable subsystems, and building bus arrays in reusable subsystems.
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