Quick Forth Question

David Betz dbetz at xlisper.mv.com
Tue Jan 24 08:03:11 CST 2006


Yes, but these weren't bent (at least by me). They plug into normal  
IC sockets in a carrier module that plugs into the side of the HHC.  
They aren't the ones that go inside and must have their pins wrapped  
around a plastic carrier. There was no evidence of repeated bending  
on any of the pins.

On Jan 24, 2006, at 8:57 AM, Sridhar Ayengar wrote:

> David Betz wrote:
>> Okay, I figured out the immediate problem. Three of the pins on  
>> one  of the EPROMs have broken off. One was hanging by a thread  
>> and fell  off when I inspected it. I see no evidence that the pins  
>> remain in  the sockets so I guess they must have fallen off when I  
>> removed the  EPROMs to read them in my EPROM programmer. I suppose  
>> this suggests  that they may have fallen off *before* I read them  
>> and that is why  your SnapFORTH ROMs don't work. I don't think  
>> that's the case though  because I'm sure I would have noticed  
>> that. Do EPROM (or chip pins in  general) get more brittle as they  
>> get older? I've never had this type  of problem before. These are  
>> gold colored (and plated I assume) pins  if that makes a difference.
>
> They definitely get brittle if repeatedly bent.
>
> Peace...  Sridhar




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