[Coco] CoCo 3 Technical Manual

Stephen Fischer SFischer1 at Mindspring.com
Tue Apr 3 22:57:35 EDT 2018

OK, it is in the new GIME announced Sunday anyway. :)

Actually the CoCo hardware genus I believe sort of announced one a while 
ago. His day job must be fun as he is having so much fun creating CoCo 

On Facebook a new 4 slot Multipak replacement was shown yesterday. He 
has yet to get the initial run of boards from the board maker. Already 
there are more wishes.

Sneak peek at a project I have in development...
Compact 4 slot MPI with YM262 (OPL3) sound, and 2 high speed serial 
UARTs. Much smaller than a standard MPI, with more features.

People have been bombarding the GIME registers, looking at the CoCo3 
prototype, discussing it not as much as the CoCo4 but still a lot of 

They are looking for any hints anyplace.


On 4/3/2018 7:34 PM, Rick Adams wrote:
> I don't know anything about the 256 color mode, no, at any time 
> including those early days.  I do know that the looseleaf version of the 
> book had handwritten notes on it, some including question marks, and 
> those sheets were photocopied and leaked here and there.
> On 4/3/2018 8:48 PM, Stephen Fischer wrote:
>> OK, somebody will ask soon anyway, do you have the story of the 256 
>> color mode of the GIME.
>> You do know that we have the CoCo3 prototype and have been unable to 
>> figure it out.
>> SHF
>> On 4/3/2018 6:29 PM, Rick Adams wrote:
>>> On further reflection, I can give a few more details.  At the time I 
>>> was going from an early copy of what later became the service manual, 
>>> which I believe was in the form of a loose leaf notebook, which I 
>>> borrowed from Dale Lear, who had one of the early Coco3s before they 
>>> were even announced.  Funny story... Dale contacted Falsoft asking if 
>>> they wanted us to write articles for Rainbow and they politely 
>>> demurred, until he mentioned that he had one of the few Coco3s that 
>>> existed at the time. Suddenly the answer became, "Yes, please."  Dale 
>>> usually did the programming and I did the writing for our articles.
>>> On 4/1/2018 10:47 AM, Deny Wilson wrote:
>>>> In the March 1989 edition of Rainbow Magazine, Rick Adams has an 
>>>> article
>>>> called GIME Power (pg 14). In the article, he mentions Tandy's *CoCo 3
>>>> Technical Manual*. I've looked on the Color Computer Archive, in the
>>>> Hardware manual section, and the closest I can see to such a book is 
>>>> the
>>>> Color Computer 3 Service Manual. Is this the book Rick was referring 
>>>> to, or
>>>> is this a different book entirely? If it's a different book, does 
>>>> anyone
>>>> have the book and would they be willing to scan it in and upload it 
>>>> to the
>>>> archive?
>>>> Thanks,
>>>> Den

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