[Coco] GIME

[camillus Blockx]

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



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>
>>>>
>>>>
>>>>
>>>> --
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>>>>
>>>>
>>>
>>> --
>>> Long live the CoCo
>>>
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>>>
>>
>
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