[Coco] Adventures in Pin Numbering

RETRO Innovations go4retro at go4retro.com
Thu Aug 25 09:10:03 EDT 2016


On 8/25/2016 1:25 AM, Mark J. Blair wrote:
> So, I made this here fancy CoCo cartridge port breakout adapter, complete with overkill grounding ear connections:
>
> https://twitter.com/nf6x/status/768671764771590144
> https://twitter.com/nf6x/status/768671871680196608
> https://twitter.com/nf6x/status/768671982976061440
>
> Then I learned that Tandy and 3M don't agree about pin numbering on a card edge connector. 3M numbers their IDC ribbon card edge sockets to match the pin numbering of an IDC header on the same cable. Tandy, however, swaps the odd and even pins in the CoCo's documented cartridge port pin numbering.
>
> I guess I'll be assembling version 2 in a couple of weeks.
>
>

So, just where did you find said grounding clips?


:-)


Jim

-- 
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