[Coco] It's a small win, but a win nonetheless

[RETRO Innovations]

On 3/11/2017 11:46 PM, Dave Philipsen wrote:
> I guess the reason I'm so interested in your project is that over the 
> years I have used microprocessors to read and generate data-on-tape 
> for various projects including Teddy Ruxpin, Chuck E. Cheese's, 
> ShowBiz Pizza Place, SMPTE time code, and others. Interestingly I have 
> never played around much with the CoCo cassette data though.
And I hope my comments don't create an assumption I am upset at that 
fact.  On the contrary, I am excited that someone else finds my 
exploration of interest.  Happy to send schematics and such if you're 
interested in looking or helping.  All my projects are CC (hardware) and 
GPL (software/firmware), so anyone can enjoy.

To add some additional color, the sine wave coming out of the Coco1 is a 
thing of beauty.  nice and rounded and smooth.
I didn't pay a lot of attention to the Coco 2 waveform, but the Coco3 
was jerky, sharp, and seemed unfiltered.  Cost reductions and 
integration evident.

Jim