Kako iskopirati sadrzaj PIC-a

[dejanmaksa]

Imam jedan PIC nemam pojma sta ima na njemu koji mi je doneo jedan klijent i hoce da mu prekopiram na drugi u slucaju da mu taj crkne. Probao sam da mu prekopiram sadrzaj iz njega medjutim, izgleda da je PIC zakljucan prilikom programiranja. Da li postoji mogucnost da ocitam sta je na njemu i to mu snimim kao fajl pa nek radi sa njim sta god hoce. Nije hteo da mi kaze za sta se koristi uredjaj sa koga je skinuo samo je pitao da li moze i koliko kosta ako moze.

[r2d2]

Ako je zakljucan sto 99,99% jeste, onda su ti sanse da ga iscitas skoro nikakve.

[Dariolo]

Nije nemoguće, kad kinezi uspiju sve iskopirat znači možeš ga i ti samo će ti trebat neka malo jača oprema

[vukboban]

Evo ti nesto sto sam jednom davno negde iskopao,ovo je od pre nekih 5,6 godina,odnosi se na PIC 16C84,ali mozda moze da se primeni na neki drugi PIC.Ja licno nikad ovo nisam probao,tako da mozes da probas na svoju odgovornost(nemoj mene da prozivas ako ga ne daj boze sprzis!).Probaj prvo sa nekim drugim PIC-om,pa ako uspes probaj i sa ovim .Evo ti uputstvo na engleskom:

The fact that I provide information on a homebrew 16C84 programmer
means that I often get asked whether I know how to read protected
pi*s. Recently an interesting situation arose. I received yet
another request for this information at exactly the same time that
someone happened to send me details of a technique claimed to
unprotect pi*s. I simply passed these on from one correspondent to
the other. Much to my surprise the requester later wrote back to say
the technique worked (but he destroyed 3 pi*s in the attempt). The
originator of the method is happy for the information to be placed in
the public domain although he wants to remain anonymous for some
reason. So for the benefit of PICLIST readers (and I know that
includes Microchip employees) here are his instructions more or less
verbatim (although the description is tied to his programmer the other
guy used a variant of mine):


> 1. I use the PIC16 programmer from Farnell Components (part no. 459-471).
>
> 2. The standard programming software supplied is ASLPIC from Application
> Solutions Ltd.
>
> 3. Install the 16C84 into a turned pin socket with pin 14 (VDD)
> cut off. Attach a flying lead to the stub of pin 14 and
> connect this to a power supply (0V to +14V) sharing a common
> ground with the programmer.
>
> 4. Run ASLPIC.
> Insert the PIC+socket into the ZIF on the programmer board and switch
> VDD to 5V.
> From the menu set the CP configuration fuse to OFF.
> Now set VDD to VPP-0.5V (approx 13.5 volts).
> Program the configuration fuses. (Reply on screen saying
> error invalid?? Ignore this error and set VDD back to 5V.)
> Switch VDD supply off at the power supply.
> Switch off programmer supply.
> Wait 10 to 20 secs.
> Switch on programmer supply.
> Switch the VDD supply to 5V.
> Read PIC.
>
> What may be confusing to people is the error message displayed
> when programming the configuration fuses, and next not waiting for
> the charge on the cells to fall back to 5 volts after setting the
> fuses. This is why I say switch off for 10 to 20 secs, but don't
> forget to reset the VDD supply to 5 volts first.


I must admit it looks like a surefire way to destroy pi*s to me so I
haven't tried it myself even though the originator claims that he has
never fried a 16C84 this way. I realise the fact that I have never
tried it myself means that all this is just hearsay, but although
there are some points left to the imagination, the description is
explicit enough to be tested by those worried by such things.

I have no idea whether the method is related to Bela Gebles
<100324.526@compuserve.com> technique, but if you think this info is
worth GBP1000, then like him, I'll be happy to give you my bank
account details On the other hand if you think it's all hogwash,
then I'm sorry to have wasted your time.

EDIT:izvinjavam se zbog duplog posta,zeza me nesto net!

[dejanmaksa]

Onda nemam namere da se igram sa tim picom jer ne znam gde da mu nadjem drugi ako ovaj sprzim.