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Why refactor the code?: less repetition, clearer intent, easier to change timing/logic by editing a table instead of code paths.

Feedback welcome—especially ideas to extend it.

(This post is part of Resorte, a Spanish magazine (comics, hobbies, technical notes) inspired by Argentina’s legendary Lúpin. If you read Spanish, check it out.)

All the sources for the designs and testbenches were tested on Vivado and are available at GitHub. For the generic implementations I used unconstrained ports, which gives much simpler and compact code than using generic parameters.

The implementation of the round-robin arbiter uses a very clever and (again) compact algorithm.