Yamaha CS80

I have plans to make an SMD M-board.  What I need is to find a spare 
Yamaha M board that isn't priced at $500.  Even one with all the custom 
chips removed is fine as it is mostly needed for metrics.

   As far as other filter topologies, let me get an M board working 
first. ;)  It will have better tuning trimpots, and a better stop 
selector.  I have two outlines for M board refits: original and 
digitized.  The digitized version would use a local microcontroller to 
manage parameter presets...but that is a ways off yet.  The prototypes 
look like Yamaha TF-1 circuit boards because I am using an old TX FM 
rackmount chassis as the test bed.  I call the thing my CSR-80. But 
actual M boards have to fit where vintage ones fit, so eventually it all 
has to be compacted.

Crow
/**/

On 11/14/2011 3:38 PM, David Rogoff wrote:
> Excellent news!  Keep the group informed - lots of potential customers
> here!
>
> Of course, this all begs the question of a complete M-Card replacement...
>
>    David
>
> p.s. - for the M-Card replacement, I'd like additionally selectable
> Oberheim SEM and Moog Ladder (904A AND Minimoog while I'm asking...)
> filters. And don't tell me you haven't thought of (and possibly
> prototyped) this :)   Also much nicer trim pots for tuning and
> calibration - assuming it doesn't have built-in auto-cal!
>