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Author Topic: WMS BB2 Jurisdiction chip question?  (Read 813 times)

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Offline Stayouttadabunker

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WMS BB2 Jurisdiction chip question?
« on: March 24, 2022, 02:04:09 PM »
Would anyone know the difference between a Mississippi chip and a Maryland chip?
I've been using Maryland jurisdiction chips and it doesn't need meters either.

Could someone please PM or email me a list of juri chips and what they allow you to do?

Thanks!  :cool_thumb_up:
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Offline Melissarmdlm

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Re: WMS BB2 Jurisdiction chip question?
« Reply #1 on: March 27, 2022, 12:06:59 PM »
Mississippi is a nice jurisdiction. It has reasonable limits, no mech meter running. It does of course have some monetary limits, I want to say $5k credit limit. I'm fond of my local Minnesota jurisdiction, with no limits on anything except taxable $1200 and runs the meters. I cranked around with trying to come up with a perfect jurisdiction, like Columbia w/no meters but I don't know how to produce the correct check hash in the code, and it throws a system halt if you alter a single bit on the jurisdiction chip.

Offline Stayouttadabunker

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Re: WMS BB2 Jurisdiction chip question?
« Reply #2 on: March 28, 2022, 07:58:56 AM »
Thanks!

BTW Pretty much any machine halts if the chips' programming has an incorrect checksum...lol
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Offline Eddiie

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Re: WMS BB2 Jurisdiction chip question?
« Reply #3 on: May 24, 2022, 06:29:13 PM »
ah, its the same signing they use to sign the OS and Game cards.. So if you figure out the Jurs, let me know.
ha

I will let you in on a little clue I discovered, the first 2 bytes of the Jurisdiction are not part of the signature.
Those are the only 2 bytes you can change without triggering a checksum error.

Why?  Because those 2 bytes are meant for VGT  (Video Game Terminal) ID.

:mindblown:

Any reverse engineering on the Jurisdiction needs to not include the first 2 bytes in the process.

Some keys used for checking the signing are in the BIOS...  But still need one more key, I think...
Some keys are in the boot sector of the OS and/or game card.     

If you compare Dev BIOS with Prod BIOS you will see.


Offline mikeyg

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Re: WMS BB2 Jurisdiction chip question?
« Reply #4 on: March 07, 2024, 06:23:13 AM »
Hello. Newbie here.... This is the only post I could find with Jurisdiction Chip question.
I own 2 WMS BB2s with NXT2 CPUs. If I have a Columbia Jurisdiction chip, can I just swap out U4? Or are there other steps I have to take to change jurisdiction to remove jackpot limit of $1200?
Thanks.

Offline idesign

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Re: WMS BB2 Jurisdiction chip question?
« Reply #5 on: March 07, 2024, 06:39:27 AM »
If you change the juristdiction chip you will have to do a CLEAR  and set the game up again
If it ain't broke don't mess with it.....

 

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