[Coco] Embedded coco

peak at mail.polarcomm.com peak at mail.polarcomm.com
Thu Dec 18 11:47:03 EST 2003


James
Those are good questions!
As to what kind of ram I was thinking of static ram because 
that would eliminate refresh. The size of ram would be 
optional. For a start I probably would use just one 6116 chip 
which would give 2KB. As to Rom I would start with a 2716 or 
2764 with the Intel pinout.

As to the coco's expansion port my Idea is to put jumper pads 
on the ckt board so that a person could add a full coco 
expansion port if desired.

The main Idea here is to design a board with optional 
connectors and interfacing so that individuals might 
customize it depending on their own desires for embedding 
a "coco type" computer.

Layout : I only have "PCB123" layout software at this time so 
that is what I will use but I also plan on publishing just a 
schematic so if you wanted a different layout you could.
I will design this thing with lots of options though. The 
board could have solder pads for surface mount components as 
well as the older type plated through hole pads for sockets.
The sizes of ROM/RAM,number of PIA's,Inclusion of a DAC chip,
and or Cartridge connector will all be optional.

I hope this answers your questions and I am open to 
suggestions. If there is enough interest in a mini-coco then 
perhaps we could make it a community project and convince 
cloud 9 or someone to produce a kit. It could be made 
available as just a bare ckt board or a ckt board with 
connectors etc.

Thanks for your input!
Eric the Technician.



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