Yamaha CX5M

” This sale is for the Yamaha CX5M MSX Music Computer sold between 1983 and 1986. I think this was an early version of this computer and therefore think the data of manufacture is 1983 or 1984. I think this principally because it has a power brick and later versions had the transformers inside the unit. This unit was sold in Europe and is therefore configured for a 240V AC supply. A picture of the rating on the power brick is included.”
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Yamaha CX5M with YK-10, MU-1 Mouse

“Yamaha CX5M with keyboard and many other items, used but in good shape.. Condition is Used. Shipped with USPS Priority Mail.

This auction is for a Yamaha CX5M with many accesories. Certainly used but never abused, this was my backup system back in the day. It includes the following goodies:

Yamaha CX5M
Yamaha YK-10 4 Octave Keyboard
Yamaha Dual ROM Cartride Adapter
Yamaha FD03 3.5″ floppy drive with adapter
Yamaha MU-01 Mouse
Yamaha Graphic Artist Rom
Yamaha YRM-104 FM Music Macro
Yamaha YRM502 FM Voicing Program
Yamaha SFG-05 manual and box ONLY, with original SFG-01
Yamaha YRM-103 box ONLY, YRM-301 box ONLY
Eng Systems ROMs Memex 32 and floppy, MidiSlav, assorted MSX floppys” Click here to visit listing on eBay

Yamaha CX5M

” Make a reasonable offer! All offers will be considered! Had this in storage for years, shows signs of age but works, I have included photos of it hooked up to a monitor but monitor and av cord are not included. This includes one software cartridge the keyboard and computer, power cord is built in on this model. As this is an old unit it is a final as is sale but again I have included photos to show it working, thank you in advance for your purchase!” Click here to visit listing on eBay

Yamaha CX5M

Vintage Yamaha CX5M music computer with Extras. Condition is Used.

one of a kind and looks shiny still

Works fine

Has box (beat up)


Data memory udc-01

2 fm sound synthesizers units

The actual computer in super shape” Click here to visit listing on eBay

Yamaha CX5M

“Hey All, I’m cleaning out my closet and getting rid of a few things. Here’s a Yamaha CX5M music computer without the midi keyboard. It comes with the manual and the following cartridges:

YRM-301 MIDI recorder w/manual

YRM-302 RX Editor w/manual

YRM-101 FM Music Composer w/manual

YRM-103 DX7 Voicing Program (no manual)

YRM-104 FM Music Macro w/manual

It also comes with the RF Modulator (RF-02) and the cable for cassette hookup” Click here to visit listing on eBay

Yamaha CX5MII/128 Project Machine

“There is wear on the lot from use and storage. It was acquired in a storage auction sale. The keyboard was quite dirty and was mostly wiped down, but still needs a little cleaning. I couldn’t get the Cx5MII/128 to turn on. The Floppydisk Drive FD-05U lit up and powered on when I plugged it in. This listing is being sold FOR PARTS OR REPAIR with NO RETURNS. ” Click here to visit listing on eBay

Yamaha CX5MII/128

“Another estate find.
( I had one in the day!)

1980’s YAMAHA CX5M II / 128 Super-cool addition to your DX7 era collection

Computer powers up ( check screen shots )
In the few minutes I spent checking it …
I was able to peck in and play black a short sequence,
Got clear sound out of the FM unit’s RCA outputs
All carts seem to respond correctly

Check all pics for everything included in the Bundle

Dusty from sitting on a basement shelf since the 80’s
Leaving cleaning to you” Click here to visit listing on eBay

Yamaha CX5M with Yamaha YK-10

“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 CX5M computer and YK-10 Keyboard come in their original boxes and packing material, original Owners Manual and “The Basics” manual, plus the YRM-101 FM Music Composer program cartridge, and 5-pin to A/V RCA breakout cable.” Click here to visit listing on eBay

Yamaha CX5M

” this CX-5MU was a project of mine. when I found the Synth it did not have the any of it other parts so I had to find a way to use it. first I made a normal MIDI cable in to a adaptor for video so I can see the MSX interface on my TV. then I needed a way to get it to play sound so I took apart the FM Synthesizer Unit and soldered a small switch on the side just above the Music Keyboard port so that if in the future I got the Keyboard it could be plugged in. I have uploaded all the pics I could to show what I have done. I hope its not to much or just enough to make it easy to use. ” Click here to visit listing on eBay