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markus19
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2021/01/20 03:24:31 (permalink)
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pic 16LF84A-04P Help

Hi guys ive joined this forum to see if i can get some help

what my issue is i have barcrest fruit machines and inside there workings on the program board they have a pic chip which is a security chip that only lets the board play when the code is accepted and there game specific so unless you get one from the same game card none others will match

The issue is barcrest are now no longer and real fruit machines are becoming a thing of the past... so when these security pic chips break or blow there is no way to get any replacement...

there is one man i have been in contact with who has managed to crack the security on the chips but he dont want to share how or produce them himself

can anyone help how would you even start to learn

any advice would be great

many thanks
#1

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    ric
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    Re: pic 16LF84A-04P Help 2021/01/20 14:07:33 (permalink)
    +3 (3)
    I imagine it took a fair bit of work for this "one man" to work out how these chips work, so naturally he doesn't want to give it away for free.
    There is no magic wand you can wave to suddenly reverse engineer how someone has implemented a security product.
    You could spend a couple of years working out how to program PICs yourself. There are many different types of PIC processors, they are most certainly not all the same, so it's not easy to know where to start either.
     

    I also post at: PicForum
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    #2
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/20 14:19:04 (permalink)
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    Yeah i suspect so i just would like to learn but who do you learn from lol
    #3
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/20 14:23:02 (permalink)
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    What prevent the chips from reading out there data when read on a program reader
    #4
    ric
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    Re: pic 16LF84A-04P Help 2021/01/20 14:23:24 (permalink)
    +2 (2)
    You could start by reading the datasheet for the PIC16F84A.
    You can get it at https://www.microchip.com/wwwproducts/en/PIC16F84a
     
    You make no mention if you have any programming or electronics experience yourself. That determines where you need to start.

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #5
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/20 14:40:10 (permalink)
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    Ok thanks thats a diffrent chip though is it not
    Lol not alot last weekend i burnt some ram clear files to emproms and erased some with a uv box but thats about all
    #6
    ric
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    Re: pic 16LF84A-04P Help 2021/01/20 14:47:24 (permalink)
    +2 (2)
    markus19
    Ok thanks thats a diffrent chip though is it not

    No, it is the same chip. The "LF" just specifies the low voltage version, and "-04P" is the speed grade and package specification. They are all "PIC16F84A" chips.

    Lol not alot last weekend i burnt some ram clear files to emproms and erased some with a uv box but thats about all

    So no experience at all writing programs. You have years of learning to do it yourself, or find yet another experienced person to do it.

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #7
    ric
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    Re: pic 16LF84A-04P Help 2021/01/20 14:49:56 (permalink)
    +1 (1)
    markus19
    What prevent the chips from reading out there data when read on a program reader

    The "Code Protection" bit in the config word.
    Page 21 of the datasheet I suggested you read.
    The only way to clear that bit is to erase the whole device.
    (Luckily this is a very old, very simple PIC. In a modern PIC that would be more like page#500)
    post edited by ric - 2021/01/20 14:51:11

    I also post at: PicForum
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    NEW USERS: Posting images, links and code - workaround for restrictions.
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    #8
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/20 15:13:59 (permalink)
    -2 (2)
    Would there be anyone on here capable of making the chips do you think
    #9
    dan1138
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    Re: pic 16LF84A-04P Help 2021/01/20 17:06:00 (permalink)
    +4 (4)
    markus19
    Would there be anyone on here capable of making the chips do you think

    There are members here that have enough experience to do this.
     
    Persons that reside in the USA cannot legally engage in activities to decode or decrypt security devices and algorithms for a digital computing device. There are some exceptions when such an activity is to validate how secure the device or algorithm is to attack. Your request seems beyond that usually permitted.
     
    The Barcrest company may appear to be no more, but it seems that brand name is still the property of International Game Technology PLC.
     
    Get good legal advice before you do this or ask for explicit help.
     
    Just read an Apple or Microsoft End User License Agreement to find some intense legalese about what you accepted to do and what you can be held accountable for.
    post edited by dan1138 - 2021/01/20 17:07:01
    #10
    ric
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    Re: pic 16LF84A-04P Help 2021/01/20 20:04:19 (permalink)
    +1 (1)
    dan1138
    The Barcrest company may appear to be no more, but it seems that brand name is still the property of International Game Technology PLC.
     

    It appears they were then onsold to "Scientific Games" in 2011.
     

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #11
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/21 12:17:31 (permalink)
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    Yeah i think for home use this should not matter
    #12
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/21 12:19:10 (permalink)
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    Scientific Games dont make any real fruit machines they have no interest in the old cabinet machines
    #13
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/21 12:20:35 (permalink)
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    There is alot of talk of what people can do but the proof is in the pudding what people can say they can do and what they actually do is diffrent
    #14
    ric
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    Re: pic 16LF84A-04P Help 2021/01/21 12:30:11 (permalink)
    +5 (5)
    So what is your point?
    You have come onto this forum, asking how to do something that is potentially illegal.
    You plainly don't have the skills to do it yourself, and no-one here is offering to do it.
     

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #15
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/21 12:41:30 (permalink)
    +1 (1)
    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
    #16
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/21 12:43:41 (permalink)
    0 (2)
    use spend all your time on these threads reading people problems but dont offer any help sharing your knowledge so why do you even spend your time on here... i just dont get it im not talking about you personally im talking about forums across the board
    #17
    ric
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    Re: pic 16LF84A-04P Help 2021/01/21 12:45:27 (permalink)
    +4 (4)
    We help thousands of people who have genuine problems learn how to do it themself.
    You want a quick fix to bypass a security system. Stop whinging.

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #18
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/21 12:48:19 (permalink)
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    Dont have to be aa quick fix but no one is interested in helping me
    #19
    markus19
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    Re: pic 16LF84A-04P Help 2021/01/21 12:49:24 (permalink)
    0 (2)
    there is obv a way to bypass the secure part without wiping the chip
    #20
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