Mere mention of "reverse engineering" gets me kicked back to Opus. Where I reside, reverse engineering for interoperability is generally legal, and interoperab

Mere mention of "reverse engineering" gets me kicked back to Opus. Where I reside, reverse engineering for interoperability is generally legal, and interoperability (e.g. getting a USB HID and USB MIDI devices or DOS programs to work in Linux/Android) is essentially what I'm interested in.