Post by thread:Blowing the RB6/7 data lines, how?

Hi everyone. I'm using a pic for a particular product and I want to protect the pic against the various anti - codeprotection hacks like for example the picbuster devices. The code protection bit isn't enough, I want to 'blow' the data lines used to program/read the device. This way the code should be protected against those code hacking devices. I want to 'blow' RB6 and/or RB7. But my question is, how do you do it? What's the correct and the most safe way to do this, I don't want to blow the whole chip. :-) Anyone have experience with this topic? Are there any (diy) devices which can do this? Any help is really appreciated. Thanks in advance. Regards, Dennis. ****************************************************************************** * -=[ Dennis Velthuis =- -= spam_OUTdenvTakeThisOuThtsa.hva.nl ]=- * * -=[ Raving His Way Into Tha Future :-) ]=- * * -=[ http://htsa.htsa.hva.nl/~denv ]=- * * -=[ U Have The Right to Exchange Information, So Use This Right! ]=- * **************************************************************************** **

Dennis Velthuis wrote: > > Hi everyone. > > I'm using a pic for a particular product and I want to protect the pic against > the various anti - codeprotection hacks like for example the picbuster devices. > > The code protection bit isn't enough, I want to 'blow' the data lines used > to program/read the device. This way the code should be protected against > those code hacking devices. I want to 'blow' RB6 and/or RB7. But my question > is, how do you do it? What's the correct and the most safe way to do this, I > don't want to blow the whole chip. :-) > > Anyone have experience with this topic? Are there any (diy) devices which can > do this? Any help is really appreciated. I'm not sure how you can do this safely. I recall a Microchip test called the "file test". It boils down to a file connected to an inductor, and the power connection being a nail dragged accross the surface. If this doesn't blow it sky high, not much will. On the other hand, you can try NOT blowing it. It always works for me! ;) -- Friendly Regards Tjaart van der Walt ______________________________________________________________ | Another sun-deprived R&D Engineer slaving away in a dungeon | |WASP International GSM vehicle tracking and datacomm solutions| | +27-(0)11-622-8686 | http://wasp.co.za | |______________________________________________________________|