• AVR Freaks

Hot!pic 16LF84A-04P Help

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Antipodean
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Re: pic 16LF84A-04P Help 2021/01/21 15:51:41 (permalink)
+1 (1)
markus19
haha and here we go again what is wrong with people on these forums... no one ever seems to want to help the unknowable just take the mick out of them what is the point in having learnt a skill if your not willing to share it to help others

markus19
there is obv a way to bypass the secure part without wiping the chip



Well, you obviously don't have any search foo, because there is a probable way that I can think of that has been published on the web, so fix that glitch and do some work yourself.
 
You will many of the answers here that help people are given where people have shown some effort to research their problem.
Or maybe the easiest fix for you is to buy some chips off the guy you contacted.
 

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Alan
#21
dan1138
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Re: pic 16LF84A-04P Help 2021/01/21 16:00:13 (permalink)
+2 (2)
markus19
there is obv a way to bypass the secure part without wiping the chip

There are ways to bypass any security system but you (and I do mean you personally) need to have adequate experience to do it and to assume the legal responsibility for having done it.
 
Nobody is going to just give you a solution for your problem given the remote chance that doing that may possibly be an illegal act within the laws of where they reside.
 
You have a Barcrest fruit machine but the embedded security measures block the functionality you want.
 
The way I see it you can contact whoever currently owns the intellectual property you would like to use and pay them what they want for access or get a statement in writing that the intellectual property is abandoned and now in the public domain.
 
This should allow you to reach one of two solutions:
  1. Your Barcrest fruit machine works the way you want.
  2. Or you are free to reverse engineer it to defeat the security measures.
 
 
#22
markus19
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Re: pic 16LF84A-04P Help 2021/01/21 22:22:27 (permalink)
0
Thats great advice thanks dan 👍 yeah im not trying to make it do anything it was not ment to do or reproduce any of there games for my or game projects im just trying to make it work like it was ment to but with a old blown chip or a damaged chip from on board battery leakage this is not possible i like i say there is now no longer a service provided like there use to be for replacement chips from the manufacture
post edited by markus19 - 2021/01/21 22:26:19
#23
Jim Nickerson
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Re: pic 16LF84A-04P Help 2021/01/22 10:55:23 (permalink)
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Smile: Smile missing post
#24
1and0
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Re: pic 16LF84A-04P Help 2021/01/22 17:00:36 (permalink)
+1 (1)
Anti-podean
Or maybe the easiest fix for you is to buy some chips off the guy you contacted.

+1
 
#25
markus19
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Re: pic 16LF84A-04P Help 2021/01/23 13:19:48 (permalink)
+1 (1)
1and0
Anti-podeanOr maybe the easiest fix for you is to buy some chips off the guy you contacted.
+1 


Yeah he not interested in doing this
#26
PStechPaul
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Re: pic 16LF84A-04P Help 2021/01/23 14:07:44 (permalink)
+2 (2)
If you have a schematic of the machine you might be able to determine the handshaking supplied by the PIC. Then you just have to duplicate that somehow. Maybe you can find some hackers who would enjoy the challenge.

 
#27
markus19
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Re: pic 16LF84A-04P Help 2021/01/23 14:25:41 (permalink)
0
Yeah maybe so
#28
markus19
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Re: pic 16LF84A-04P Help 2021/01/23 14:27:33 (permalink)
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Reading someone say they read a read protected pic with Microchips OWN Promate II could this be true ?
#29
ric
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Re: pic 16LF84A-04P Help 2021/01/23 14:34:25 (permalink)
+3 (3)
markus19
Reading someone say they read a read protected pic with Microchips OWN Promate II could this be true ?

Extremely unlikely. Can you quote your source?
 

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#30
markus19
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Re: pic 16LF84A-04P Help 2021/01/23 14:39:59 (permalink)
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This was on another forum further on in the post it says which programmer it is.

''There IS a programmer which can do just this. I can't remember which one, but I was introduced to it today and I successfully read a protected PIC I have been playing with for the best part of two years.

We blew the copied code into a new device, put it into the system socket and HEY PRESTO...IT WORKED! :-D:-D
#31
ric
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Re: pic 16LF84A-04P Help 2021/01/23 14:46:46 (permalink)
+3 (3)
You may be shocked to find that sometimes people post made up stories on the Internet.
 
By "quote your source", I meant give us a link to where you saw it.
post edited by ric - 2021/01/23 14:48:01

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#32
markus19
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Re: pic 16LF84A-04P Help 2021/01/23 14:55:15 (permalink)
+1 (1)
https://www.edaboard.com/threads/reading-protected-code-from-pic.134604/
#33
ric
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Re: pic 16LF84A-04P Help 2021/01/23 15:11:52 (permalink)
+1 (1)
I'm confident the user claiming a Promate programmer will do it is spinning a story.
There is a link in that thread to a person who has done a lot of work cracking encrypted chips.
For those methods, you need a large supply of known good chips, as you have to try abusing them with large voltage pulses that usually just destroy them or at best erase the chip.
 

I also post at: PicForum
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#34
markus19
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Re: pic 16LF84A-04P Help 2021/01/23 15:28:27 (permalink)
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Yeah as you have said with this being a old chip i would of though there would of been some form of modern software that could crack this
#35
dan1138
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Re: pic 16LF84A-04P Help 2021/01/23 17:56:09 (permalink)
+2 (2)
ric
I'm confident the user claiming a Promate programmer will do it is spinning a story.
There is a link in that thread to a person who has done a lot of work cracking encrypted chips.
For those methods, you need a large supply of known good chips, as you have to try abusing them with large voltage pulses that usually just destroy them or at best erase the chip.



Some Microchip UV erasable PIC controllers had a vulnerability to being dumped when VDD was too low to operate normally and not high enough to see the code protect flag as enabled. Under these conditions it was possible to read a code protected controller with a Promate 2.
 
I have never see this demonstrated with a electrically erasable (flash) PIC controller with any device programmer. 
#36
markus19
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Re: pic 16LF84A-04P Help 2021/01/24 06:03:07 (permalink)
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Attached Image(s)

#37
markus19
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Re: pic 16LF84A-04P Help 2021/01/24 06:06:10 (permalink)
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hi again guys on the following image you can see the pic chip with the label rtc bze ontop the green varta batt supplies constant power to the chip which pins on the female port when the chip is taken out can i test with a multimeter to check the batt is giving the right power to work the chip 
#38
Antipodean
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Re: pic 16LF84A-04P Help 2021/01/24 06:20:25 (permalink)
+1 (1)
markus19
hi again guys on the following image you can see the pic chip with the label rtc bze ontop the green varta batt supplies constant power to the chip which pins on the female port when the chip is taken out can i test with a multimeter to check the batt is giving the right power to work the chip 


You probably do not need to take the chip out. Due to the age of the equipment I would suggest this is a NiCad cell, so would be about 3.6V, but due to age it probably no longer holds any charge, so there will most likely be no voltage present. You should be able to measure directly on the battery terminals.
 
 

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Alan
#39
markus19
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Re: pic 16LF84A-04P Help 2021/01/24 06:28:10 (permalink)
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The battery is a VARTA - 55615602940 - BATTERY, PCB MOUNT, 2.4V
NI-MH

The battery i belive is readinh good from the battery as i think it could of been change from the past owner however i want to make sure that power is getting to the chip and there is no trace damage
#40
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