MATRIXSYNTH: Roland CMU-800 CompuMusic with Apple II Interface Card

Sunday, August 30, 2015

Roland CMU-800 CompuMusic with Apple II Interface Card

via this auction

Note this does require an Apple II and software to run. You don't see pics of the card often.

See this post and this post for a couple of video overviews of the CMU-800. A search will bring up previous posts.

"Up for sale is a very rare Roland CMU-800 CompuMusic vintage analog synthesizer/sequencer module. Additionally it has 8 cv/gate outs for controlling other gear that supports this feature.

The unit powers on and the LED lights up, but that is all as far as the testing goes as I don't have the needed gear to test. So I am selling this AS IS.

It also comes with an Apple II interface card -- no software though. (Everything you get is in the two photos).

If you search the net there is a way of making or buying a MIDI interface for this. One is available for around $75 from, which is based on an atMega168 using schematics and c code another Japanese fellow developed. I'll include on a DVD-ROM this set of files. -- in case you want to implement your own using the schematics, printed circut board image file and the c code.

I read that with the MIDI interface you can trigger all 8 channels of the cv/gate -- for compatible gear. Channel 8 has a nice portamento effect."

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