Whoo! Fantastic work! Just checked it all out!
This is
exactly the kind of thing the scene needs right now. I get a lot of people who look at the ultimate resource list and still don't have any step-by-step beginner-oriented tutorials to follow. It's mostly resources that are focused towards intermediate-to-advanced developers, so we're missing a lot of opportunities to grab new developers.
I've just updated the page with your tutorials near the top, just after the tools, so you can expect a bunch of traffic from it:
https://dreamcast.wiki/VMU_development.
I'm literally working on the next release of EVMU2 and am meticulously working on hardware documentation for it right now. Let me know if there's anything you need from EVMU2 or anything you want covered in the hardware documentation:
https://vmu.elysianshadows.com/hardware_docs.html. Really focusing hard on this, because Marcus Comstedt's site is extremely incomplete, and even the official VMU development manual is 1) largely incomplete, hiding things from you or outright lying 2) SERIOUSLY wrong and incoherent in a lot of places. We've also discovered a bunch of new things since conducting research for EVMU2 that hasn't really been documented, and I want to get it out there for everyone.