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Old 05-11-2005, 08:07 PM   #1
shenlong83
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Default PSP EMUs cometh...

A GB emu has been relased for the jap PSP recently

[url]http://www.hellogamer.com/2005/05/10/gameboy-emulator-released-for-psp/[/url]

theres a pic and some info on it, id say it will be till the end of the year till we have a few good emus

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Old 05-11-2005, 08:26 PM   #2
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Default Re: PSP EMUs cometh...

> A GB emu has been relased for the jap PSP recently
>
> http://www.hellogamer.com/2005/05/10...eased-for-psp/
>
> theres a pic and some info on it, id say it will be till the
> end of the year till we have a few good emus

So, it's confirmed to be real now? Nice. I guess those Japanese hackers really can do anything. It'll be great to see what can be done with the PSP.

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Old 05-11-2005, 08:32 PM   #3
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Default Re: PSP EMUs cometh...

There've been reports of other emus also.....I just don't know how trusting I can be of something I can't test.
But it does go to show you, somebody's always ready to try something.
"If it can be emulated, someone will do it."

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Old 05-11-2005, 11:00 PM   #4
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Default Big screaming deal.

It requires a revision 1.0 Japanese PSP. Furthermore, if you have a 1.0 Japanese PSP and you actually want to play any games on it, your'e screwed, as anything manufactured since May 1st will refuse to run on a PSP that is not at least revision 1.5. Even further more, any games produced in the next manufacturing run and further will automatically flash your PSP to version 1.5. Basically, you're damned if you do and you're damned if you don't unless someone manages to crack the (current) revision 1.5 system, and even if that's cracked, Sony can just make a new version, release it, require games to require it, and so on. Basically, an emulator that only runs on a revision 1.0 Japanese PSP is the equivalent of gasoline that will only combust in a car with three wheels and half a dashboard.

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Old 05-12-2005, 02:01 AM   #5
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Default Re: PSP EMUs cometh...

Kind of the same thing my topic said that I posted yesterday... but anyways.

This appears to be why the US version is not yet "cracked":
The problem with the 1.5 models, is that they require an approved digitally signed signature embedded into the software to run. Currently, several teams are trying to extract the signatures of legite philes and imbed them flawless into a homebrew prog. However, since this is very difficult, it will take some time...

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Old 05-12-2005, 02:38 AM   #6
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Default Re: PSP EMUs cometh...

> This appears to be why the US version is not yet "cracked":
> The problem with the 1.5 models, is that they require an
> approved digitally signed signature embedded into the
> software to run.

The NDS has this with it's Wireless Download Play function, but the people working on the firmware figured out how to disable the check for signed code...now the DS just doesn't care if it's signed or not.

Perhaps the PSP people could do something like this for the PSP?

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Old 05-12-2005, 08:42 AM   #7
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Default Re: Big screaming deal.

> and even if
> that's cracked, Sony can just make a new version, release
> it, require games to require it, and so on.

But it would still have to be backward compatible to 1.5, wouldn't it? After all, they can't expect to get away with making people's PSPs incompatible with games they already bought that were designed for v1.5. Well, I suppose they could implement new authentication schemes and just grandfather-in the the older games by including with the update an explicit list of previously-licensed games that aren't required to meet the new authentication standards (with each entry on the list having a field that is the answer to feeding the game's code through a one-way function, to authenticate that it really is that game).

Or am I misunderstanding the issue? (I don't have a PSP myself and haven't really been following it.)

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Old 05-12-2005, 05:52 PM   #8
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Default Re: PSP EMUs cometh...

> There've been reports of other emus also.....I just don't
> know how trusting I can be of something I can't test.
But it
> does go to show you, somebody's always ready to try
> something.
"If it can be emulated, someone will do it."

Yet despite it being one of the few systems well within the Dreamcast's abilities, still no one has emulated the TurboGrax-16 on that platform ...

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Old 05-12-2005, 06:36 PM   #9
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Default Re: Big screaming deal.

> But it would still have to be backward compatible to 1.5,
> wouldn't it?

Do you even know what you're talking about? Did you even read my post? Here's the way it works now:
- All games manufactured since May 1st require a 1.5 PSP
- If the newer game doesn't see 1.5, it automatically flashes the PSP to 1.5
- 1.0 games still work on 1.5
- Crack only works on 1.0 PSPs
- If you want to play new games but you want to play cracked shit, you're screwed, Sony's happy.

Should version 1.5 PSPs be cracked, here's the way it'll conceivably work:
- Sony corrects the bug that allowed the crack to work
- All games manufactured since nnnnnnn require a 1.6 PSP
- If the newer game doesn't see 1.6, it automatically flashes the PSP to 1.6
- 1.0 and 1.5 games still work on 1.6
- Crack only works on 1.0 and 1.5 PSPs
- If you want to play new games but you want to play cracked shit, you're screwed, Sony's happy.

Point is, until someone finds a reasonable way to run unsigned code that doesn't rely on bugs in a particular firmware revision, Sony can just keep cranking out new firmware revisions that the games will automatically install, and everyone's happy except the crackers.

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Old 05-12-2005, 09:09 PM   #10
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Default Re: Big screaming deal.

> Do you even know what you're talking about?

Not really, I thought I made that clear in my post.

> - All games manufactured since May 1st require a 1.5 PSP
> - If the newer game doesn't see 1.5, it automatically
> flashes the PSP to 1.5
> - 1.0 games still work on 1.5
> - Crack only works on 1.0 PSPs

Basically what I was assuming was that the "crack" you were discussing was a loader that fools the PSP into thinking it's a 1.0 game. If that were true, it would stand to reason that the PSP might treat it the same, no matter what version the PSP is running on (unless Sony started restricting backward compatibility to games that match an "ok to run as a version x.x game" whitelist, as I speculated could be done). Apparently that was a mistaken assumption on my part about how the current crack works. Again, I know next to nothing about the PSP system (and what tests it uses--or may use in future firmware versions--to verify that games are legit), nor do I have any experience with such hacking. I was just curious.

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