[Coco] The chinese crt9128 works!

[chris]

Hello,

I must have missed the other threads about this card.

Is this a project you guys are building or is this an old card? What  
is "osh park"?

I have a coco2b and sIDE. I have a multi-pak on the way and would love  
to be able to use my coco as an 80col terminal!

Thanks,
-Chris

On Oct 18, 2013, at 7:18 PM, Luis Antoniosi (CoCoDemus) wrote:

> there is a mistake on the previous schematics I did. But the  
> resistors are
> all used.
>
> There is one resistor under the RCA connector. In this pic you can  
> see one
> of its end under the RCA:
>
> https://pbs.twimg.com/media/BUpSDG7CQAAvxfJ.jpg:large
>
>
>
> On Fri, Oct 18, 2013 at 6:21 PM, Tormod Volden  
> <lists.tormod at gmail.com>wrote:
>
>> On Fri, Oct 18, 2013 at 11:58 PM, Tormod Volden wrote:
>>> On Fri, Oct 18, 2013 at 4:21 PM, Luis Antoniosi (CoCoDemus) wrote:
>>>> I will proceed with the prototype in wire-up and they I will make  
>>>> few
>> test
>>>> cards. I'll be putting the card on osh park in case you guys want  
>>>> to
>> make
>>>> your own.
>>>
>>> Thanks for sharing this! Just looked at your design again. You are  
>>> not
>>> hooking up the intensity signal (INTOUT, pin 8), isn't that  
>>> missing an
>>> opportunity?
>>
>> On what do you base the choice of resistor values (22 and 25 Ohm) on
>> the output stage? The Disto design uses 470 Ohm to ground and 10 Ohm
>> in series. On your PHB board I think I can see 220 (or 330?) and 15
>> Ohm close to the output socket although I am not sure where in the
>> circuit they are.
>>
>> Tormod
>>
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>>
>
>
>
> -- 
> Long live the CoCo
>
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