[Coco] MC6809 Inards

Mark Marlette mark at cloud9tech.com
Thu Oct 5 07:39:40 EDT 2006

I have been in contact with Dale Chatham and Terry Ritter. They found 
me with Cloud-9. They both were amazed with what we do with the CoCo 
today. Terry ordered some HD63x09eps.

Dale did some checking for me...Wouldn't disclose names or sources but 
he said that he was in contact and there are NO backups, notes, etc of 
the GIME with the designer. More than one designer, not sure..... :(


Quoting KnudsenMJ at aol.com:

> In a message dated 10/4/06 2:25:55 PM Eastern Daylight Time,
> jdaggett at gate.net writes:
>> I do  remember Nick and John's discussions on who the original chip designer
>> was. My point is, since he designed the chip, most likely any  inventions
> that
>> would have come about from the design of this chip  would more than likely
> be
>> assigned to Tandy/Radio Sh ack and not to  the inventor. Only the inventor
> would
>> have his name on any patents as  inventor and not the owner of the patent.
> That is
>> the right of the  assignee.
> You are right on both counts.  Patents are usually assigned to the
> inventor's employer, but the Patent Office insists on having real 
> human names  attached
> to the patent.  So if you found the GIME patents or copyrights,  you'd find
> the chip designer's name.  (Well, actually, a copyright on a  "work done for
> hire" does not need to list the person's name, unlike a  patent).
>> . So  Tandy would own a copyright of some form of
>> information regarding the  chip. I am not sure any search will reveal any
> deep
>> intricate details  of the chip.But worth a shot.
> Tandy (now Radio Shack) probably long since threw away the GIME design, or
> the floppies it's stored on probably can't be read by anything they 
> have  now.
> If you could find the designer and talk to him (hopefully he's  retired), he
> might remember a few useful concepts, but I doubt he saved a copy  of 
> the gate
> design, unless he was really proud of it.
> ISTR someone here was well along the way in "forward engineering" a
> work-alike ASIC design for the GIME -- like, we understand it well 
> enough to  emulate
> it, so we could build one.  Probably minus the sparklies, tho  :-)
> --Mike K.
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