@SHAOS made me discover the "C-element" in his log Trying other ways to make chips. I don't know why I hadn't heard about it yet. It's something to keep in mind for when I have resurrected the project and after I added the ALI. The tools have a setback for a few reasons, one of them being the need to support asynchronous logic and clock domain crossings... This way I'll be able to fully characterise the debug interface of the #YGREC8.