[Coco] Project Sneak Peek

S Klammer sklammer at gmail.com
Wed Jul 20 05:22:10 EDT 2016

With a $15 Arduino board, we can create and play with short samples in
order to get a feel for Darren's implementation.  As playback is direct
from samples on the SD card, it would presumably be able to play longer
samples and be able to switch those samples quickly.

Darren, glad to see we have new features, like audio, in a single
CoCoSDC-2... and if discussions like this may provide you with other
ideas... I'm still looking to upgrade my CoCoSDC.

I'll leave it at that as I have to prep for work.

On Jul 20, 2016 3:40 AM, "Nick Marentes" <nickma at optusnet.com.au> wrote:

> On 20/07/2016 2:30 PM, Darren A wrote:
> Sound generating hardware/software is not my area of expertise.  I just
>> adapted the arduino code referenced below so it could play samples from
>> files on an SD card instead of from the MCU flash memory:
>> <http://playground.arduino.cc/Code/PCMAudio>
>> The SND input on the CoCo cartridge port is not mixed with output from the
>> 6-bit DAC, but can be mixed with the single-bit sound output.
>> - Darren
> I'm not familiar with the microcontroller and don't know about PWM sound.
> All I know is that the CoCo has been devoid of any sort of sound hardware
> like most of the other systems of the time. This new CoCoSDC-2 could fix
> that and create a new sound "standard" that every customer who purchased it
> would have without the need for a multipak.
> My 2 cents worth but people have different opinions and whatever happens,
> happens.
> Nick
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