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RdW
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TeamEurope: Epoxy Block, a good Protection in the 80's, not so good today!
#365001 - 04/08/17 01:22 AM


http://team-europe.blogspot.de/2017/04/epoxy-block-good-protection-in-80s-not.html

They dumped the code inside the 2816 eeproms protected under epoxy from two Dodge City boards



Dullaron
Diablo III - Dunard #1884
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Re: TeamEurope: Epoxy Block, a good Protection in the 80's, not so good today! new [Re: RdW]
#365004 - 04/08/17 01:50 AM


> http://team-europe.blogspot.de/2017/04/epoxy-block-good-protection-in-80s-not.html
>
> They dumped the code inside the 2816 eeproms protected under epoxy from two Dodge
> City boards

Just wow. Who in the world put that black shit on that? lol



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Kitsune Sniper
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Re: TeamEurope: Epoxy Block, a good Protection in the 80's, not so good today! new [Re: Dullaron]
#365011 - 04/08/17 03:56 AM


> > http://team-europe.blogspot.de/2017/04/epoxy-block-good-protection-in-80s-not.html
> >
> > They dumped the code inside the 2816 eeproms protected under epoxy from two Dodge
> > City boards
>
> Just wow. Who in the world put that black shit on that? lol

Companies that didn't want their games pirated, that's who. It made sure bootleggers couldn't copy the data and make their own copies. It's crude, but it's worked in a lot of cases.

I'm actually very surprised Team Europe managed to remove the epoxy like this, I didn't think it was possible to remove it with a heat gun without damaging the components (then again I am fairly ignorant on how this stuff works!)



gregf
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Re: TeamEurope: Epoxy Block, a good Protection in the 80's, not so good today! new [Re: Kitsune Sniper]
#365024 - 04/08/17 09:58 PM



>> Just wow. Who in the world put that black shit on that? lol

>Companies that didn't want their games pirated, that's who. It made sure bootleggers
>couldn't copy the data and make their own copies. It's crude, but it's worked in a lot of
>cases.

The method was effective or else bootleg versions of the just-for-fun gambling product might have been found/supported by this time in MAME. The current working version of Merit's Dodge City (a newer version) uses a somewhat different hardware arrangement.

src/mame/drivers/meritm.cpp

GAME( 1988, dodgecty, 0, meritm_crt250, dodgecty, driver_device, 0, ROT0, "Merit", "Dodge City (9131-02)", MACHINE_IMPERFECT_GRAPHICS )


src/mame/drivers/merit.cpp

GAME( 1986, dodgectya,dodgecty,dodge, dodge, driver_device, 0, ROT0, "Merit", "Dodge City (2131-82, U5-0D)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING )

GAME( 1986, dodgectyb,dodgecty,dodge, dodge, driver_device, 0, ROT0, "Merit", "Dodge City (2131-82, U5-50)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING )

GAME( 1986, dodgectyc,dodgecty,dodge, dodge, driver_device, 0, ROT0, "Merit", "Dodge City (2131-82, U5-0 GT)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING )


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