Casio AP-20 - Using MIDI; MIDI Fundamentals; MIDI Terminals and Functions

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SCHEMATIC DIAGRAMS
MAIN PCB JCM433-MA1M (1/2)
DSP
CPU
ROM
(1M)
RAM
(256K)
Reset IC
Key Controller
RAM
(256K)
RAM
(256K)
ROM (16M)
ROM (8M)
D/A Converter
D/A Converter