Downloading MIDI patterns into SR-16?

I just recently bought a used SR-16. I have read through the manual, but I still have a question.

I have some MIDI drum patterns that I'd like to put into the SR-16. Is there software available that will let me download the patterns into the SR-16?

I seem to remember that the SR16 used a proprietary system, so only other SR16 patterns can be loaded. It was very easy to write custom patterns on that machine - just tap them in !

I suspect that you are correct. Thanks.