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Subject: Re: [yamahacs80] Yamaha CS-60 modification

From: David Rogoff <david@...>
Date: 2005-12-01

JH. wrote:
> In my CS60, such a mod was done.
> The Gate signals were simply connected together in pairs (with a switch),
> apparently forming some weird wired-OR.
> In a 3rd switch position, the Gates were connected in two quadruples,
> obviously aiming at a two-voice, 4-note stack.
> First thing I did was getting rid of this modification.
> It _sort_of_ worked, but not really perfectly. Probably becaus eof the
> comlex voice allocation in the CS-Synths.
>
The problem is that this will deal with the CV/Gate to the M cards, but
there's other places that use the note data from the KAS that won't be
updated correctly. For example, the KBC boards use the note/octave
codes to generate the Brilliance & Level High/Low. This really has to
be done in the KAS chip, so it would have to be replaced by a PIC or
FPGA. Of course, if you're going to do this, you'd also implement MIDI
in/out, different voice assignment mode (low-note priority, etc), and
lots of other stuff. I've thought about doing this, but then I got
better :^)

David