You now have a Origin62 which also includes the electronics of a Sonus88?
The donor was an M-Audio Prokeys Sono 88. Yes I took the mainboard and the board with the input and output ports etc. and installed it into the Origin62.
Here is a photo of the case with the holes I made. I brought some of the buttons and knobs of the Sono 88 board out to the case of the Origin62. The other ports are the ones that the Origin62 normally has.
Both are connected to the midi connectors (DIN ?), so both receive incoming midi data?
No I'm not using DIN connectors at the moment. I connect the Origin62 interface by USB to a computer then connect the computer by USB to the Sono 88 interface and send midi to it that way, triggering the Sono 88's internal sounds.
The Sono88 is connected to buttons (not sure how you've done that, but not important right now), but NOT to the keys. The Origins62 is connected normally?
I took the buttons and knobs out of the Sono 88 and installed them in the Origin62. My goal is to send keypress signals directly into the Sono 88 mainboard after physically pressing the 'edit mode' button on the voices daughter board (or preferably by invoking edit mode via midi command) so it thinks they are physical keypresses in edit mode, allowing me to assign midi CC to the sustain port on the sono 88 interface, and other controllers applied to the sono 88. I imagined taking the output from the keybed of the Origin62, splitting it, sending to both the origin62 mainboard as normal, and then also translating and sending to the Sono 88. I guess I need a microcontroller for the keypress translation part, and it's complicated etc., so I'm wondering if I can do it via midi/usb instead.
I assume therefore that the Origin62 will operate normally?
The Sonus88 will operate normally for midi data received?
Yes they both work fine. But I cant assign Midi CCs to controllers on the the sono interface (eg. assign Midi CC #64 to the sustain pedal from the sono 88, which is on the ports board which was transplanted along with the mainboard) because it normally requires pressing keys on the Sono 88 keyboard/keybed. This sono 88 keybed wasn't working and was not transplanted (too big anyway).
For the S88 I only have the User manual. https://www.manualslib.com/manual/293112/M-Audio-Prokeys-Sono-88.html
It does contain probably most of the common midi commands it supports. Full midi implementation would be great, but I can't find it.
Do you have the manual with the map printed? Can you see the bit you need to change? Usually, you CAN find such manuals via the web - I'll have a look and see what I can find, as I understand it, you're looking for the parameters of the Controllers.
No, I don't have any memory maps for the device unfortunately.