Found another old time beast! This is the Yamaha Dsr-2000: fm monster with a ton of functions, pitch and mod wheel, voice data screen for patch adjustments, and even the option of
Yamaha DSR-1000 80's Black | Reverb
Yamaha - DSR-1000 - FM Synthesizer - Catawiki
Clavier arrangeur yamaha dsr 1000 - full pack - vintage à Yvré L'Évêque | Clasf image-video
Yamaha vintage model dsr1000 digital 4 'operator' based Synthesizer Keyboard 80s | Reverb