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PET 2001 CPU 6502  H A L L O synthesizer knitting machine secunet Raspberry Pi
Since Ralf and me were both interested in making music our next project was a music synthesizer with touch sen- sitivity. The keyboard and controls were scanned by a 6502-based self developed micro controller, the sound was generated by analoguous circuits and special synthe- sizer IC's by Curtis.    (+)
synthesizer diagram