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Yamaha CX5M Music Computer

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Yamaha CX5M is an MSX-system compatible computer that expands upon the normal features expected from these systems with a built-in eight-voice FM synthesizer module, introduced in 1984 by Yamaha Corporation.

This FM synth itself has stereo audio outputs, an input for a purpose-built four-octave keyboard, and a pair of MIDI Input/Output ports that could be used for normal MIDI on the second revision of the CX5M but only management of data from a Yamaha DX7 on the first model.

The CX5M was built to the MSX standard, which included slots for inserting programmed cartridges. These extended the machine's capability, accepting a range of games, office applications and so on. Yamaha produced a range of cartridges including a programmer for Yamaha's DX range of FM keyboards and a real-time sequencer. Two of these, the Voice Editor and Music Composer, allowed the user to program a bank of 48 sounds for the CX5's own built in synthesizer and to sequence up to eight channels of music, controlling the built-in module or external instruments via MIDI, in step-time using a musical-stave input screen.

Available Cartridges

UDC-01 Data Memory Cartridge
YRM-101 FM Music Composer
YRM-102 FM Voicing Program
YRM-103 DX7 Voicing Program
YRM-104 Music Macro
YRM-105 DX9 Voicing Program
YRM-301 MIDI Recorder
YRM-302 RX Editor
YRM-303 MIDI Macro & Monitor
YRM-304 DX7 Voicing Program II
YRM-305 DX21 Voicing Program
YRM-501 FM Music Composer II
YRM-502 FM Voicing Program II
YRM-504 Music Macro II
YRM-506 FB-01 Voicing Program

Technical Specifications
Type: Digital
Synthesis: Frequency Modulation
Oscillators: 4
Waveforms: Sine
Osc Modulation: Envelope, Glide / Portamento, Keyboard, LFO, Oscillator, Pitch Wheel, Velocity
Envelopes: 4
Evelope Paramerters: Attack, Decay, Sustain, Release, Monophonic, Polyphonic, Triggered
LFO: 1
LFO Parameters: Sample & Hold, Saw Up, Square, Triangle, Delay
Polyphony & Tuning
Polyphony: 8
Timbrality: 4
Tuning: Standard
Modes: Mono, Polyphonic
Patches RAM: 46
Storage: Internal, RAM Cartridge
Editing: MIDI
+ Bass and Chord accompany
+ 6 built-in rhythms
+ patterns: 16 beat, Waltz, S. Rock, J. Rock, Disco, Swing
+ Bar-step entry
+ 2,000 Notes
Chips and Operating System
Z80A Zilog CPU
3.57 MHz
32 K RAM
Microsoft MSX
Yamaha YM-2151 sound chip
Case: Desktop
Case Details: 32 Character QWERTY Keyboard
Keyboard: 37 keys, Non-weighted, Plastic
Controls: Buttons, Sequencer
Display Type: LED
Display Count H: 256
Display Count V: 192
Display Notes: Composite TV Monitor
Dimensions (WxDxH): 423 x 200 x 60 mm / 16 5/8 x 8 1/8 x 2 11/16 inches
Weight: 2.8 kg / 6.3 lbs
Audio Output Connections: RCA, Stereo Main
Audio Output Count: 2
DAC Bits: 12
DAC Frequency Rate: 32
Power: DC5 12V power supply
Year Released: 1984
Year Discontinued: 1986
Manuals & Documents

Product Links
Company Product Sites:
[+] download.yamaha.com
MSRP List Price: $595 - convert
Retail Street Price: $500 - convert
Used Price: $75 - $150 - convert
References & Sources

  Report Synthesizer

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