[Coco] Including an SSC

[Nick Marentes]

Forgot to include a link to the Teensey...

https://www.sparkfun.com/products/12646

Nick


> Certainly impressive for a 30 year old sound chip! The AY has a bit of a
> tiny "LoFi" sound quality to it and I believe all sound is square wave based
> but it goes to show what good software can do to push the hardware.
>
> I think it's too late for any header option in the CoCoSDC (if it was at all
> possible). With 80 boards now in production, the chances of a hardware
> revision are slim and any hardware add-ons to the CoCo will have to go the
> multi-pak route.
>
> I wonder if there is another way to interface hardware to the CoCo?
>
> I can think of 2 possibilities:
>
> 1) With many having upgraded their 6809 CPU to a 6309 with the installation
> of a socket to the motherboard, maybe a board containing the CPU and
> additional hardware can be connected here? This severley limits the
> potential user base though since it requires the CPU to be socketed first,
> not an easy mod for everyone.
>
> 2) The construction of a cartridge slot internal expansion/extender.
>
> What I'm now toying with is the idea of a small board that plugs into the
> cartridge port, brings out a header duplicating the bus and then immediately
> goes to another cartridge edge connector. This means that the CoCoSDC (or
> any cartridge controller) will protrude an extra 1 inch from the CoCo but at
> least the CoCo bus connections are made accessible for an expansion card
> internal to the CoCo. This is essentially a Y-cable but made very compact
> with much shorter connections and still maintaing a rigid connection to the
> CoCoSDC.
>
> The CoCoSDC uses a FD502 cartridge case which is shorter than the previous
> FD500 cartridge case so although it will protrude more than before, it won't
> protrude any more than that old controller (or an SCC or Orch90).
>
> While I would personally prefer the least amount of protrusion, this is a
> good compromise for adding hardware (such as sound) to the CoCo.
>
> Anyone with PCB skills with an opinion on this idea? Do'able or another
> of my pie-in-the-sky ideas?   :)
>
> Nick
>
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