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From: jgd@Dixie.Com (John G. DeArmond)
Newsgroups: sci.electronics
Subject: Re: I'm worried about EPROM labels....
Message-ID: <6992@rsiatl.Dixie.Com>
Date: 16 Feb 91 05:38:04 GMT
References: <8505.27b915d3@jetson.uh.edu>
Organization: Rapid Deployment Systems (making go-fast things and things that-go fast)
Lines: 26

rcte2q@jetson.uh.edu writes:

>The recent postings about light-induced bit changes has given me pause. I am an
>impoverished student hacker, so I have been using 'appropriated' file folder 
>adhesive labels to cover my EPROM windows.   My question: are all labels equal,
>or are there reasons not to continue using thin, plain paper+adhesive labels?

Funny you'd mention it.  I happened to be burning some EPROMS when I 
read your article and decided to test.  A file label over a 27256 reduces
the sensitivity to the same strobe as in the first test from about 15
feet to about 3 feet.  I did not test again with the quartz-halogen lamp.

For very cheap window covers, I suggest floppy disk write protect
tabs.  If you buy the kind of disks that use foil-based tabs, you can
even write on them.  If like me, you buy the el-cheapo bulk disks 
with the black vinyl tabs, simply stick the file label over the vinyl label.
Or if you're REAL cheap, some Scotch 33+ electrical tape works well :-)

John


-- 
John De Armond, WD4OQC        | "Purveyors of speed to the Trade"  (tm)
Rapid Deployment System, Inc. |  Home of the Nidgets (tm)
Marietta, Ga                  | 
{emory,uunet}!rsiatl!jgd      |"Politically InCorrect.. And damn proud of it