Brian, Thanks for your response to my request, for links to information and for illuminating some of the darker corners of the topic.
I have an M100 and an M102 that could interact with the DV interface, but I've been wondering if I need both and will probably opt for a cable that suits on or the other. My DV has two drives (one is loose...) I have some 5.25" DD disks and should be able to find a way to boot it, if it powers up at all. I'll report back with progress. Thanks again, -CH-