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Old 06-18-2004, 06:25 AM   #11
MooglyGuy
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Default Re: Unemulated systems

> haha, for some reason, i'd love to see those emulated.
> complete with scans of the original... unit or whatever...
> mm, nostalgia.

The problem is that most of those games use glop-tops for the CPU and ROMs to cut down on costs, so they're totally undocumented and undumpable - the best you can do are simulators.

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Old 06-18-2004, 06:28 AM   #12
MooglyGuy
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Default Re: Unemulated systems

> and Sega's System 16 arcade board (and close variants),
> which apparently was once partially working in MAME but was
> removed so it could be rewritten.

Wrong, the games are sitll there, it's just that some of the X-Board and Y-Board games are unsupported simply because they never were in the first place. Furthermore, the games are emulated in Final Burn Alpha, if I recall correctly. Of course, their being emulated in Final Burn Alpha has no bearing on the MAME rewrite, since the MAME System-16-and-its-variants rewrite is concentrating on accuracy. Also, you still won't see some System-16-and-its-variants games emulated simply because the games are encrypted in a rather powerful way. Basically, the 68000 is encased in an epoxy block with encryption circuitry within as well as some RAM that contains the 65536-bit (you heard me, that's more bits than any encryption scheme on the market at the moment) key and a battery so that the RAM doesn't lose its contents. There is an effort that has been started, however, to find some way of reading the key out of the RAM chip, since the algorithm is already known.

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Old 06-18-2004, 03:45 PM   #13
SirDaShadow
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Default Re: Unemulated systems

> of reading the key out of the RAM chip, since the algorithm
> is already known.
I bet one of those games is Turbo Outrun. wow 65k encryption...I wonder if we can ask Yu Suzuki nicely for the key
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Old 06-18-2004, 07:36 PM   #14
MooglyGuy
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Default Re: Unemulated systems

> I bet one of those games is Turbo Outrun. wow 65k
> encryption...I wonder if we can ask Yu Suzuki nicely for
> the key

Yep. Turbo Outrun, Crackdown, Super Monaco GP, and others use the "Hitachi brick". There's already an ongoing effort to try to read out the key, basically it just involves trying to read the key out of the SRAM chip, the problem is that it's surface-mount and very delicate and old.

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Old 06-23-2004, 06:53 PM   #15
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Default Re: Unemulated systems

> > Phillips CDI
>
> I always wanted one of those, just to see how shitty the
> Zelda sequels really were.

I used ot owna CDi and all the Zelda games. Honestly, if you ignored the horrifically bad "video" scenes, they weren't half bad. I kind of wish I could still play them :-/

CDi games had the coolest cases.

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