[Coco] Programmable Sound Generator Cart for CoCos

RETRO Innovations go4retro at go4retro.com
Fri Nov 25 14:42:00 EST 2016

On 11/24/2016 6:49 PM, Zippster wrote:
> Some cool chiptunes coming to the CoCo soon.
> I just finished drawing up a prototype using the YM2149 PSG.  I’m hoping we’ll be
> able to put it to good use along with the work Simon is doing.  Of course there’s a large
> amount of music already out there from other platforms that won’t be hard to convert
> to get us jump started.
> This is essentially the same thing as the MC-10 Supercart, but for the CoCo.
> <https://drive.google.com/open?id=0B1sgl615FlGnSGtTV3lEbmEtZWM>
> Should have some prototype PCBs in a week or so.  :)
> By the way, check out John and Neil’s latest Podcast for an interview with Simon.
> Really enjoyed it guys!
> Happy Thanksgiving everybody!
> - Ed

I can understand the ROM and the SSG, but how does the RAM fit into the 
picture?  Does it occupy ROM space as well?


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