[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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