[dorkbotpdx-blabber] Laen's fancy synth chip

[Alex Norman]

It looks like this is a very simple digital synth with an DAC on the end.. if
that is the case I'm sure you could do this all in software on an arduino [or
any sort of microcontroller].. and get other sorts of waveforms as well.., and
build a resistor ladder DAC [or does the arduino have some sort of 'analog
out'?]..  I did that [resistor ladder DAC] last week and made a wavetable
reader, saw, square, and triangle waves... though I only made one tone at a
time, and didn't do envelopes, but scaling up shouldn't be too hard.

-Alex

On  0, Laen <james.neal at gmail.com> wrote:
> It's the YMZ-284 Software Sound Generator.   Great for reliving the
> glory days of 8-bit sound.
> 
> Datasheet here:
>    http://content.laen.org/electronics/YMZ-284.pdf
> For sale here:
>    http://www.goldmine-elec-products.com/prodinfo.asp?number=A11116
> 
> It's nice because it's all microcontroller controllable. You write
> some bits, it makes whatever tones you want, with various envelope
> shapes.
> 
> The only external part you need (besides a microcontrolleer) is a
> 1-4MHz clock generator, but an ATTiny2313 running at 4MHz with the
> CLKOUT fuse bit set is perfect.
> 
> -Laen
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