Feature/avalon

[parhamsoltani]

Interface now uses std_ulogic/std_ulogic_vector, addresses are now unsigned and UpperCamelCase is used to increase readability. Contributions on feature/avalon are now splitted into a new PR.

[Paebbels]

Thanks for the PR split. GitHub shows me 10 modified files including Wishbone files:

Please have a look. I also see indications for missing line breaks at the last line in the source file:

A final line break is required by many text based Linux commands.

[parhamsoltani]

I've rebuilt the feature/avalon branch to ensure it includes only Avalon-related changes, removing Wishbone files. I've also added the required final line breaks to the source files to comply with Linux text command standards.

[Paebbels]

@parhamsoltani thanks for splitting Avalon and Wishbone. Please see my detailed review. I created many code suggestions, which you can accept (as bulk operation on GitHub's Files changed tab).

Please also see some comments and questions in between suggestions.