I recently acquired a Roland MC-500 along with a binder of disks the previous owner had. I booted it up with the provided system disk, which to my surprise showed up as Version 0.1! I couldn't find any information about Super MRC older than
I've been searching around for other versions of the OS. I found one on Roland's site, but unsure which version that is. I've seen 2.0 for download on some sites but nothing of the nature of a changelog or description of the different versions is to be found anywhere, at least from what I've searched.
I also saw some vague writing while searching the Yahoo group about upgrading Super MRC boards but to the best of my knowledge it's all contained on a floppy, not on onboard ROM?
I'll do some testing when I have time to mess with writing to 720kb floppies but for now any knowledge anyone might have about Super MRC would be greatly appreciated