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Single shorting plug on the diagnostic cart

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Hey all!

 

I've been testing an atari and I fabricobbled an old serial cable into a shorting plug for the atari 2600

 

I could get another cable but I'm wondering if someone with the diagnostic cart and a 2600 could send me a picture of what the diagnostic matrix looks like with just one plug inserted, one picture per controller port

 

any help is greatly appreciated!

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I have Diagnostic cart with both shorting plugs. I was repairing a 4 switch. It had a bad RIOT chip in it. I did a video on it and put on YouTube. I go a little bit into using the cart and the shorting plugs. Here is a link to it if your interested. If there is something more specific you'd like to see, let me know.

FYI, some of the diagnostic tests on the cart work with the Gemini.

 

 

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