Nice. I can't imagine people paying for my app, but I used to have a JX-10. I could've used a program like that - though it would have to run on something a little more modern 

Nice looking piece of work. I will give it a shot at some point. One of the first things I wrote in 1982 was a sysex patch transformer and editor for the Roland JX-8p. I sold a lot of them. Ran on the Apple II and the Commodore. These tools are handy as I too am always trying NOT to overwrite programs.. unsuccessfully sometimes. When I started with Sequencers I would often just keep the patches in the workstation and just send them down when needed. Never lost one after that. Thanks for the work.

Well, not very straight-forward, but it’s possible... it may drift out of phase eventually, depending on how well the sync source and the Rev2’s clocks match.

You’ll have to trigger the voices you want running with LFO key sync ON, synced to the source. Then you turn the LFO key sync OFF, with the source still running... so that the voices LFOs aren’t actually synced, but free-running at whatever BPM they’re clock-synced to.

If you want all voices to behave like one global LFO, turn unison ON and enable all unison voices, 8 or 16, hit a key, and then turn unison off again. If not, you’ll have to trigger the voices separately with your DAW or whatever, an arpeggiator or sequencer with the phase offsets you want. 8ths, 16ths, or why not a rhythmical pattern...? You can get some REALLY cool results this way... but you can’t stop the clock source from running, if it’s an external arpeggiator for instance, always keep it running...

Possible to do consequetively (is that word even english?  ) with each LFO separately too, so EVERY voice has each of their 4 LFOs set to different phases, free-running but still in sync... It’s quite tedious to set up, but as I said it makes for some REALLY cool results. Especially when using the onboard gated sequencers set to other, different rhythmical and melodical patterns. It’s ”magical”.

On day 3 with this beast and starting to discover a few things that I hope might be addressed in a firmware update. Thought I'd start a thread here so people can add to it! My unit is on OS 1.0.0.2 as of these notes:

1. It would be great to have the screen show parameter/value changes when operating controls. It shows value changes in Page 2 mode, but it would be great in normal mode too.

2. It would be WONDERFUL to be able to cycle through all 6 filter models without having to enter Page 2, and display them on the OLED as you do that.  Instead of the filter LEDs just being dark for the Page 2 modes, maybe they could blink in different ways to indicate the SEM modes?

3. We need a linked mode to edit both layers simultaneously when in Double mode; as of now you can only edit one layer at a time.

4. Transpose should go more than 1 octave in each direction... at least two?

5. The Arpeggiator should show a BPM display when spinning the Rate knob

6. Is it possible to swap pitch & mod levers in software? 40 years of pitch bend on the left and mod on the right is really tough to unlearn ;-)

7. Pan Mode (Page 2) doesn’t transmit any MIDI CC when you change it - it only sends NRPN. This happens in both single and Double modes.

8. The sustain pedal doesn’t work when the arpeggiator is running. Maybe I'm missing something with how that works?

9. There’s a user on the big GS thread (Mr Analog) who made an excellent list of other ideas that could make the Page 2 parameters much faster/easier to access…

Hello everyone. About a year ago I was workshopping a patch on my Prophet XL and felt intimidated to stray too far from the original sound. Saving/finding copies of a patch on most synths is a pain and my memory isn't good enough to remember every little change.

So I wrote a little program that saves and loads the patches for me. I named it Patchup.
I think there's a saying about how software is never done, so I spent a good chunk of my free time over the last year iterating on Patchup. It'll work with any MIDI device, but there's some special functionality built in just for the Prophet X. For example, a single button press to send a request program edit buffer data dump. The responses are automatically saved as a new patch.

Today I've decided I can't justify dumping any more time into a program that only I use, so I've released it to the Microsoft store. It's a Windows app for now. The front end was written in React Native (as well as most of the business logic) so maybe one day I'll write a MacOS, iOS, Android, and browser version (shout-out to web assembly).

It's free, and all your data is saved locally so no need for a user account or an internet connection. You can save patches into folders and load them with a single press. You can rename them, add notes, edit the sysex directly (be careful), and more.

It'd be wonderful if you can try it out. It would be mildly heroic if you can provide feedback. Thank you.
https://patchup.app/
https://apps.microsoft.com/store/detail/patchup/9NGFHJ4DGT72?hl=en-us&gl=US