Date: Sat, 21 Feb 2004 14:35:19 -0800 From: Tom Lee <[EMAIL PROTECTED]>
I am looking for a Killy Clip or equivalent to fit over a 32 pin DIP.
... I suspect you are talking about a DIP test clip.
No, he really means Killy Clip. They were a very popular way to kludge expansion capability onto a 128/512/Plus. Horribly unreliable, easy to screw up the install..
Thanks, Tom. I'm glad someone else still has vivid memories of the Killy clip. However...
You could make your own equivalent, though, by using a dip "header" (or a couple of them) and soldering them directly onto the pins of the 32 pin ic. Cheap and sort of reversible, but a bit more labor intensive. 32 pins shouldn't be too bad, though...I've done this lots of times for smaller chips. Works better than a Killy clip ever did.
Derek's recommendation is actually better for my application than a Killy clip. I simply was not familiar with test clips. I knew they existed, but looking at the photo in the Digi-Key catalog and reading the description lead me to believe that they only provided accesible test points against which one could press a probe.
I want pins (or that nifty cable assembly with DIP socket in the 3M photo on their site). Digi-Key's catalog photo is misleading (to me) because the photo of the test clip is upside down. The access pins are at the bottom and the clip is at the top. I was looking at the top part of the photo, thinking it was the top of the clip, and seeing no pins to which one could wire wrap or otherwise conveniently connect. Of course, Digi-Key doesn't stock the 32 pin version...
An easily removable and movable assembly is needed in this case, so a test clip would be perfect and there are no clearance issues in this case.
The upgrade that I bought for the 512KE had an option exactly as you describe. It included the Killy clip and it included a pair of 32 pin header strips (64 pins total) with a socket to space the header strips and support them.
The instructions offered the Killy clip for those not inclined to solder but pointed out that it can pop loose. If one was willing to solder, the header strip assembly could be positioned over the chip and the strips' pins soldered to the 68000 pins, while the socket held the two header strips level and aligned and spaced properly. When the soldering was done, one removed the socket and voila, there were two nicely attached header strips sticking up from the 68000.
Because I used the header strips, I have the Killy clip left over. The brand was the Newbridge/Newlife upgrade. They were less popular than other brands for some reason, but they had several interesting upgrades for the 128 - Plus.
One interesting aspect of their 128/512 upgrade was that it had 8 SIMM sockets. You may recall that there was a period when 256K SIMMs were between worthless and about $5 - $10 but 1MB SIMMs were still $80 - $120. And many folks had a few 256KB SIMMs laying around unused. With the 8 sockets one could install two 1 MB SIMMs and six 256KB SIMMs and get 3.5 or 4 MB of RAM saving about $150 over what four 1 MB SIMMs would have cost.
Jeff Walther
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