This is finally almost good enough to be useful, so I’m making it public. It does try to recognize and deal with both OS 2 and OS 3 of the PCM 70.
NOTE - you NEED the Mk II version of the Electra One controller. There simply wasn’t enough memory to support the editor in its current form. Some day I will be able to streamline it to work on the Mk I. but for now, it’s not possible.