[Coco] GIME

[Joel Ewy]

On 04/12/2013 04:41 PM, camillus Blockx wrote:
> Hi Joel,
>
> If you do not get those cc3's repaired, would you consider to sell me a
> keyboard, mine broke and the one I bought did not either.
>
> thnx
>
> cba

Hey,

I think it was someone else who had the broken CoCo 3s.

JCE

>
>
> On Fri, Apr 12, 2013 at 4:36 PM, Joel Ewy <jcewy at swbell.net> wrote:
>
>> On 04/12/2013 02:19 PM, Bill Gunshannon wrote:
>>
>>> Honestly I hardly think they do actually have them.
>>>> Do you see a BUY NOW button or Send RQF ? Because if it's not Buy Now
>>>> this
>>>> means they don't have it but they will got for it. I got negative answers
>>>> for other parts they claimed having it in their websites.
>>>>
>>> Most of the places I was checking out are chip manufacturers and even
>>> list potential yields.  Of course, you could be right, too but I have
>>> had considerable luck buying obscure chips that are no longer available
>>> in the US at all.  That's why I wondered if this is a generic chip and
>>> anyone with the right number would work or if they contain something
>>> that makes them unique (isn't that the case with PALs?)
>>>
>>> bill
>>>
>>>   Hey Bill,
>> What I've read is that the GIME is an ASIC (Application Specific
>> Integrated Circuit), which is to say a custom chip.  But I don't believe
>> that they are (one-time) programmable like a PAL, but rather a custom mask
>> was designed for the chip.  If that's the case, the part number should
>> refer to the GIME as GIME, not a generic chip that Tandy then turned into a
>> GIME.  I'm sure others will correct me if I'm wrong here.
>>
>> Is it possible that one of these IC houses bought out another that had the
>> GIME custom mask as part of its portfolio (I believe they were sourced from
>> more than one firm)?  Or could these simply be NOS (new old stock)?  Or
>> vapor.
>>
>> JCE
>>
>>>> On Fri, Apr 12, 2013 at 2:44 PM, Bill Gunshannon
>>>> <billg999 at cs.uofs.edu>wrote:
>>>>
>>>>   Here's a new question which shoild reveal even more of my ignorance.
>>>>> I have heard that the most common chip to fail in the COCO3 was the
>>>>> GIME.  Correct?
>>>>>
>>>>> I have also heard that they are pretty much impossible to replace.
>>>>>
>>>>> Except that in doing some searches I have found at least a dozen
>>>>> places (mostly in China) who claim to be able to provide this chip.
>>>>>
>>>>> Is there something unique about the one used by the COCO3 or is it
>>>>> a plain, vanilla 2645A0001/TCC1014?
>>>>>
>>>>> The reason I ask is that I have one or two broken COCO3's in a box
>>>>> here somewhere from many moons ago and if the likely failure is the
>>>>> GIME and I can buy replacements, why should I not fix them?
>>>>>
>>>>> Oh yeah, and on another separate topic, is there anywhere that one
>>>>> can buy the little boards that go in a ROM PAK?  I tried removing
>>>>> the Tandy game chip from one and it seems pretty much impossible to
>>>>> do without damaging the little board itself.  Is there anyone still
>>>>> making/selling cartridge prototyping boards?  I am dying to get back
>>>>> into hardware hacking and I think the COCO is the animal to do it on.
>>>>>
>>>>>
>>>>> bill
>>>>>
>>>>> --
>>>>> Bill Gunshannon          |  de-moc-ra-cy (di mok' ra see) n.  Three
>>>>> wolves
>>>>> billg999 at cs.scranton.edu |  and a sheep voting on what's for dinner.
>>>>> University of Scranton   |
>>>>> Scranton, Pennsylvania   |         #include <std.disclaimer.h>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Coco mailing list
>>>>> Coco at maltedmedia.com
>>>>> http://five.pairlist.net/**mailman/listinfo/coco<http://five.pairlist.net/mailman/listinfo/coco>
>>>>>
>>>>>
>>>> --
>>>> Long live the CoCo
>>>>
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>>>>
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