Temporary chip select jumper?

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fingerz's picture
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Temporary chip select jumper?

Hi,

 

I'm looking for a way to temporarily jumper T to $A on an Apple-1 board to use the CFFA expansion card. Any tips for doing so that is quick and doesn't damage the board?

 

Rgds, -Jimmy.

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Corey came up with a great way

I was chatting with Corey a few years ago about my BASIC EPROM cards and he came up with a really cool jumper method.  I'll let him give the details but it looks really simple, configurable, and removable.

 

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That looks perfect!

Hopefully Corey can share what those little metal pegs are and where he got them. That would suit my needs perfectly for occaisional use of a CFFA.

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Those are machine pin sockets

Those are machine pin sockets. They are made by Mill-Max and Harwin.

I would try Mill-Max 0579-0-15-15-11-27-10-0, "Barb press fit socket for non-plated thru hole", specs state that it can grip pins (or wires) .015"-.022" (commonly expressed as 15-22 mils), which is 0.38mm-0.56mm, and requires a thru-hole at least .040" (40 mil, 1 mm). I would be more confident, but I don't know the size of the holes on the Apple I board. 0579 Receptacle With No Tail - Mill-Max

Both companies have dozens of other types, for plated or unplated holes, press-fit or soldered, receiving different size pins or wires, etc.

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Thanks, got it working
Thanks to the suggestions I've put together a temporary jumper solution and it works perfectly!

 

 

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