I'm coming back after a long break with my synthesizers.
Now I'll tell about my experience SDCard HxC Floppy Emulator with Ensoniq TS-10 synthesizer.
I installed Floppy Emulator to my TS-10 instead of FD container. There is enough place to do this modding without removing FDD.
There are some photos. (Video I'll do some later.)
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The only thing that I did - I moved the buzzer on the back side of the PCB and put the contacts extender to LCD connector. Caps of buttons mounted on the chassis allow to press buttons on the PCB, and the plastic transparent carries the light output from the LEDs to the front panel. PCB mounts to the front panel by two uprights. (Not shown)
I checked SDCard HxC Floppy Emulator with Ensoniq TS-10 synthesizer. Overall HxC firmware and PC software are working properly.
Next step I made adapter that allow to use both FDD or Floppy Emulator. I added one more IDС and power connectors to connect FDD in parallel. To switch between FE and FDD - simply insert Floppie to FDD (used internal signal "Disc inserted" in FDD)
Schematics, technical review and some issues I will put in the forum topic.