[sdiy] Interesting article on top octave generators.

[The SynthiMuse]

Yea, using a processor seems like overkill but 'C' on a little dev board is
so accessible.

I suppose a good choice might be one of those 'Blue pill'-style FPGA boards
that would allow you to implement a logical clone of the original TOG chips.

A further advantage would be that if there were enough outputs, you might
be able to implement a custom divider for every note and get closer to the
integer numerator/denominator that Don mentioned was inherent on the
tonewheel organs.

My last VHDL experience was 20 years ago so well beyond the 3.5-year 'half
life of knowledge' I've heard about.
However, I can imagine perhaps VHDL coding a single numerator/denominator
module then instantiating it 12 times for a TOG or 61 times for a whole
keyboard.
I can imagine the board layout could be a challenge as you might have the
background breakthrough of 60 other discordant notes for every key you
pressed. Maybe the divider module block would need an enable line but that
would double the number of pins needed.

Gerry
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