[sdiy] J-Wire keyboards

[Ian Smith]

> Hi,
>
> The J-Wire keyboards were designed by Pratt-Read for E-Mu Systems back in
> the Early to Mid-1970's.
>
> Tom Oberheim was working with Dave Rossum back in those days on an analog
> design for Multi-channel that later became a Digital Scanned design.
>
> E-Mu patented the Microprocessor scanned keyboard around 1976 and was
> licensed to Sequential Circuits, Oberheim, Shultz Sound Design and others.
>
> It was based upon a Zilog Z-80 MCU and I have still all of my code and
> design info somewhere in my mass of documents.
>
> Hope that this helps. I believe ARP and Moog also used a variation of this
> analog version of keyboard design.
>
> Best regards,
>
> Terry Shultz
>

Terry,

I just stumbled upon some info about the J-Wire keyboards in either the Preferred Circuits or the Music Engineer's Handbook from Electronotes today. Good stuff. 

I actually have a Z-80 lying about still, not that they're hard to get or anything, I was going to use it to build my own single board computer just for giggles, but this would be a better use for it at the moment. If you find those docs, can you send a copy my way?

-Ian







 		 	   		  
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