FYI only:

Maybe this may help someone who is interfacing PICmicros with nonvolatile
memory:

I'm sure many of you use some sort of nonvolatile memory with PICs -- there
is a good article written by Christopher Leddy related to the subject of
this post at www.embedded.com:

More specifically:
http://www.embedded.com/showArticle.jhtml;jsessionid=HPZ0HKC3MPPKWQSNDBCCKH0
CJUMEYJVN?articleID=13100883

Embedded Systems Programming also had a good article about this subject in
their magazine somewhere around 1997 to 2000, I'll try to remember to post
the title if I can find it.

Very good reading when trying to deal with good 'ol Mr. Murphy!

Side note:
As fans of FRAM devices from Ramtron (www.ramtron) have already pointed out,
FRAM write times are an order of a magnitude less than the typical write
times of standard serial EEPROMs, which helps greatly in preventing
corruption due to brownouts or power failures. I hope that Ramtron has a
second source by now -- being a single source part was only thing that
prevented me from using them at the time. Maybe things have changed since
then...


Take care,

Ken Pergola






-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of tim_webb@AGILENT.COM
Sent: Monday, August 25, 2003 4:24 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC:] WARNING: Dangerous PIF attachement in email from PIC
l ist


I have been getting about 150 emails a day from the virus and not one email
was from anybody that I know.  And about once an hour, I get an email that
appears like I sent it but it came back as undeliverable.  I checked my
computer with the latest anti-virus and scanned all drives and no virus was
detected.

-----Original Message-----
From: Dave VanHorn [mailto:dvanhorn@CEDAR.NET]
Sent: Monday, August 25, 2003 12:49 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC:] WARNING: Dangerous PIF attachement in email from PIC
list


>
>2. If Olin says he sees 4-5 a week it makes me wonder what his wonderful
>system makes of the remaining 5-6 a DAY that should be going through it
>(based on what others and I see).  It would be too good to hope that his
>wonderful system just deletes them silently.

I probably get 5-6 an hour, or thereabouts.
I just delete them.
There's a bunch of virii in my attachment directory, awaiting the big
flush, but since I have no problem of disk space, and they're about as
dangerous as a light grenade, I haven't gotten around to it recently.

I did get virused ONCE, using eudora.  I clicked on the attachment.
In my own defence, I was deathly ill with pancreatitis, and the morphine
drip wasn't doing my critical thinking any good.

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