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echo: apple
to: comp.sys.apple2
from: James Littlejohn
date: 2009-02-15 10:00:04
subject: Re: Flakey ZipChip 8000

On Feb 15, 8:53=A0am, Steven Hirsch  wrote:
> Steven Hirsch wrote:
> > James Littlejohn wrote:
>
> >>> This thing may not even have one more round of insertion
left before
> >>> pins
> >>> start breaking off, so I'm looking for advice on solving the
> >>> intermittant
> >>> problem and mounting it permanently in... something.
=A0What have fol=
ks
> >>> done
> >>> with these things to get around contact problems? =A0Is there life
> >>> after broken
> >>> pins?
>
> >>> I can almost imagine a circuit board with a pair of 20-pin headers
> >>> and 40
> >>> holes offset a bit so I can solder the ZipChip on permanently.
>
> >> I had foreseen this on my Zip chips and on Accelerators for the GS. I
> >> desoldered the CPU socket and installed a ZIF socket on both my IIe
> >> and IIgs motherboards.
>
> > Excellent plan! =A0I'll order up a couple of 40-pin low-profile ZIF
> > sockets forthwith.
>
> Quick update and proviso: =A0A low-profile socket isn't going to work wit=
h a
> ZipChip! =A0The package extends too far on the ends and will interfere wi=
th the
> actuating lever :-(. =A0I'm going to have to go for the conventional ZIF =
socket
> with side-mounted lever. =A0That's going to neatly prevent anything from =
sitting
> in slot 3 and perhaps slot 2 as well.

I purchased mine from Reactive Micro, Henry alters them to work with
the larger chip package.

http://8bitsystem.com/AppleII/ZIPCHIP1.JPG
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