[Coco] any source of 2x20 edge connector for the coco 2 or 3 ?

[Chad H]

I should look at remapping the traces then to take care of the pin inversion.  We should still be able to achieve the original intent.  the board's connectors were connected by straight-through pathways.  If I recall correctly,  the socket alternates each sequential ribbon conductor up-down-up-down...  I think I have such a cable laying around (40 pin IDE?). I can check this with a multimeter perhaps.  However, if every pair is simply inverted like you say, would it be solved by simply inverting the connector pads?  That is to say.. All TOP pads straight through to BOTTOM  and the BOTTOM pads straight through to TOP?  This would be a easy redesign.

Sent from my ASUS Infinity

On Oct 6, 2014 8:52 PM, Kandur <k at qdv.pw> wrote:
Chad,
naturally I tried the easy way first, used two 40-pin sockets
crimped onto a ribbon cable. One of these was plugged
into the Coco's card slot via your board, the other to an FDC
cartridge. Unfortunately, all of the even pins became odds
and the odd pins even. (1>2, 2>1 ... 39>40, 40>39 etc.)
That's why I had to solder the cable to the board such a way
to get the Coco's card slot pin-1 connected to the FDC's pin-1.

Kandur

Sunday, October 5, 2014, 6:21:45 PM, you wrote:
> Kandur, I noticed the soldering you did from the ribbon cable end to the
> card edge :/

> A revision to this could take the card edge to a row of holes that would
> allow you to strip the very end of the cable, push it in, and solder
> cleanly.   Or perhaps a location designed to house a 40-pin socket that you
> could just plug the cable into?

> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Kandur
> Sent: Monday, October 06, 2014 2:46 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] any source of 2x20 edge connector for the coco 2 or 3 ?

> Sorry, those were purchased for another project, this is the one you are
> looking for:
> http://tinyurl.com/kgv4jhf

> Kandur

> Monday, October 6, 2014, 12:29:28 PM, you wrote:
>> I bought these, $6.59 for 10
>> 10 PIECES OF FEMALE 40 PIN IDC FLAT RIBBON CONNECTOR
>> http://tinyurl.com/nu4ud3j


>> Kandur

>> Monday, October 6, 2014, 12:21:16 PM, you wrote:
>>> any source of 2x20 edge connector for the coco 2 or 3 ?

>>> To use with this product:

>>> https://www.oshpark.com/shared_projects/UGHgHdKm


>>> it is obvious that a prototype cartridge would be better...

>>> thanks

>>> --
>>> didier

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