> From dthomas@einet.com Tue Jul 12 01:16:25 1994
> Date: Mon, 11 Jul 94 17:14:27 MDT
> From: dthomas@einet.com (David B. Thomas)
> Message-Id: <9407112314.AA13398@einet.com>
> To: pic@figment.mit.edu
> Subject: protection?
> 
> What's this I keep hearing about being able to break the protection on
> a pic?  This is definitely something I'll need to know about, as I
> have a pic design that I will want to be able to protect in about 6
> months when we're ready to go into production.
> 
> -DeeT
> 

The first $40 adresses can be read even if the PIC is protected.
The PIC is destroyed in the process.
I've only tested this on a windowed 16C54.

I've also written a program that does this automatically and generates
an INTEL dump file. (This is not the program called PICBUSTER)
I did this to be able to copy a cableTVdecoder, the code was more than
$40 words long so I didn't try it though.

No, you can't have my program and I won't tell you more than to read
the datasheets on how to program the PIC's.

The same decoding principal is said to work on some PAL's too... 

/Anders 'Hedex' Hedberg

Solution: Have no secrets below adress $40.