[sdiy] Polyphonic keyboard scanner

[Tom Wiltshire]

On 19 Aug 2009, at 18:07, George Hearn wrote:

>   That said, some early synths had basic duophonic keyboard  
> scanners that
> used only logic like the Octave CAT.  I'm not sure how it worked in  
> the Korg
> MonoPoly, but this maybe somewhere to look as well.  George

Sorry, but the Monopoly won't help you. It used an 8049 uP. Still,  
the schematics are worth a read. It's a good service manual.

T.