IJK interface diagrams.

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Dbug
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Re: IJK interface diagrams.

Post by Dbug »

Now that I see this picture, it would almost make sense to make a variant of the IJK interface with the connector on the side instead of the center, so it does not overlays with the expansion port cable, but otherwise, looking good!

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HigashiJun
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Re: IJK interface diagrams.

Post by HigashiJun »

Dbug wrote:
Tue Jun 09, 2020 5:54 pm
Now that I see this picture, it would almost make sense to make a variant of the IJK interface with the connector on the side instead of the center, so it does not overlays with the expansion port cable, but otherwise, looking good!
It seems tight on the picture, but this design follows the characteristics of the original IJK interface.

I don't have an Erebus, but thanks to its long enough flat cable, my Cumana Reborn can be placed on the side of my Atmos, making the "top" clear.
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Mustangus
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Re: IJK interface diagrams.

Post by Mustangus »

I seem to have a problem, but not sure why. I made Kenneth's IJK board but when i connect it to my oric some of the keys are mapped wrong ie if i press the a key i get a y on the screen instead. Retrurn i think gives me a z. Not all keys are wrong just mostly the first 2 or 3 on each row.

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kenneth
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Re: IJK interface diagrams.

Post by kenneth »

Are there the 4 bridges on the top of the pcb?
Maybe a chip or the diode mounted upside down?

Mustangus
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Re: IJK interface diagrams.

Post by Mustangus »

Yes there are 4 bridges on the pcb and all components are the right way. Even tried them the wrong way in loads of potions but its still not working. Tried on 48k and 16k oric 1.

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kenneth
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Re: IJK interface diagrams.

Post by kenneth »

can you send the pictures of the ribbon and of the interface with the both sides?

Mustangus
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Re: IJK interface diagrams.

Post by Mustangus »

Ok i've fixed it now. I had the resistor array's the wrong way round. Havn't worked much with resistor arrays before and forgot they had to go a certain way.

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kenneth
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Re: IJK interface diagrams.

Post by kenneth »

On these components it's very poorly printed ... Good news! :D

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