Investigating the PSP's PSone emulator
As Sony laments another security breach.
When the Sony PSP launched in Japan at the tail end of 2004, it looked set to dominate handheld gaming for the foreseeable future. The machine had it all: ultra-desirability, state-of-the-art specs, all-encompassing support from all major publishers, plus every major Sony and third party gaming franchise on the way. But a combination of shovelware PS2 ports, a basic lack of understanding as to what is required from a handheld game experience and a high price point has held the machine back dramatically. At the same time, Nintendo's DS has caught the imagination in a way that Sony seems unable to match.
With the PSP more than a little moribund, Sony has plunged an adrenalin-packed syringe of extra functionality directly into the heart of the machine, injecting new features deep into its advanced innards. Most exciting of these new upgrades is the PlayStation 1 emulator. A core component of the PS3-interfacing firmware 3.0, it is one of the most ambitious and complex pieces of code yet devised for the PSP. Original PlayStation titles can be bought and downloaded from the PlayStation Store via PS3, downloaded to memory stick then played on the handheld. And the emulation performance is astonishingly good, as close to perfect as you could want, with only minor glitches being reported on a minority of titles.
A software design classic
While many were expecting the PS1 titles available on the Store to be ported to the PSP with modifications, the downloaded code is actually 100% identical to the titles that were released on CD all those years go, with the PSP itself completely emulating the base hardware. Potential problems such as the lack of all of the original joypad functions are all addressed internally by the emulator, which offers several button remapping options. Most PS1 titles run at a humble 256x224 resolution and the emulator can match that, but additionally offers options to scale up the image 18% to fill the screen at the original aspect ratio, or else stretch the image to fill the PSP's 480x272 widescreen display.

What would you play?
The coding is pretty much a work of genius - there's strong evidence that the PSP's MIPS R4000-based CPU is running most of the PS1's R3000 code natively, but it's highly likely that the rest of the PS1 hardware is being emulated entirely by software. Some of the compatibility glitches with certain titles look very similar to those witnessed in the aged Macintosh Connectix Virtual Game Station emulator, released back in 1999. This codebase was bought by Sony (mostly to get it off the shelves) but it may well be that elements of that product have found their way into the PSP code. What is for certain is that this is the most demanding PSP code ever written. All games released to date run with the CPU locked at 222MHz, but the emulator dynamically changes the CPU speed to cope with the load and it is the only piece of software ever to run the PSP CPU at its top speed of 333MHz when performing really complex tasks.
What this essentially means is that the PSP - unofficially, for now - has access to a colossal library of brilliant games, making the handheld an essential buy. Final Fantasies VII-IX, Metal Gear Solid, Vagrant Story, Gran Turismo 1 and 2, Tekken 3, Xenogears, Resident Evil, Castlevania: Symphony of the Night... the list of gaming titans potentially available for handheld play is beyond sensational. The only issues are that - officially at least - you can only play these titles if they're available to buy in the PlayStation Store, and if you own a PS3, required to access the Store in the first place.
Of course, there's also the factor of money. Each game costs US$ 5.99 to download, which would be fair enough were it not for the fact that you might already have bought the original PS1 title. It could be argued that effectively charging for this service is good business sense from Sony, and earning additional revenue from back catalogue content is something the movie and music industries have been doing for decades. On the other hand, spending so much time and effort on such a monumental piece of code and then basically hobbling its potential is a little puzzling when the PSP really needs all the help it can get in improving its fortunes. Over and above the money issue, the PS3 ownership prerequisite in particular is another extremely bizarre limitation considering how low the crossover in ownership must be.
Emulator exploitation

Speed Freaks? Correct.
Unfortunately for Sony, Christmas was hardly a season of good tidings. The PSP's security, now completely compromised, makes the reverse-engineering of any internal software module very easy for those programmers in the know. Spanish PSP code warrior, Dark Alex, having already released his own piracy-friendly firmware update, released a completely open PlayStation emulator update on Christmas Day, which offers extreme levels of compatibility with well over 90% of all NTSC PlayStation titles. Over and above the work done on defeating the PSP's internal security, the hack works simply by bypassing a security checksum and diverting a license key check. Also released was a tool that allows you to copy your own PlayStation titles into PSP friendly memory stick files for playback on the emulator.
Not surprisingly, even those with zero interest in piracy want in on the action here. Despite many PS1 titles obviously showing their age 12 years after the system's debut, there are so many solid gold gaming experiences to be savoured on the PSP that Dark Alex's custom firmware build is now a supremely hot download. Hardcore gamers, having turned their back on the Sony handheld, are now coming back in their droves, digging out their dormant PS1 collections and replaying some classic slices of videogaming history, or even chasing down games they might have missed in the past in order to play them for the first time on the PSP.
How Sony chose to respond to this Yuletide guerrilla assault on their PS1 back catalogue plans turned out to be pretty predictable. The latest firmware 3.10 featured new PlayStation emulator code, a couple of security patches and a new set of encryption keys (which were broken before the US version of the firmware was even released). But perhaps someone at Sony is witnessing the wave of good will and excitement surrounding PS1 emulation and you have to wonder - would it hurt their plans so much to sell their own PS1 CD conversion tool supported by their own official firmware?
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Comments (80) Latest comment 5 years ago
Comments threads automatically close after 30 days, but please feel free to continue chatting on the forum!
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No. In fact, it might even make me consider a PSP.
Actually it wouldn't, but that wouldn't make for a very good post. :-D
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Remember folks its copyright infringement not copyright theft no matter what those nazis at FAST say.
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Sorry, Sony, too much of a rip-off.
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I don't think anybody in the world is going to buy a PS3 just for this. So given the aforementioned low crossover until they release their own game conversion tool or open up the store to PSP owners they're not gaining any sales.
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Good point.
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It's a shame that it would have to take a homebrew junkie to do it...
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What's to stop people from copying the ISO or whatever file types the emulator reads?
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There are tools that convert PAL to NTSC titles, even the "official" converter from Dark_Alex supports that.
Excellent suggestion for Sony to release the conversion tool and let us transfer the PS1 discs ourselves. Mind you, the homebrew scene is way ahead with amazing features such as PS1 ISO compression and support for multi-CD titles.
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Because people want to play these classics on the bog. It seems to be the Holy Grail of gaming
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Why not buy a PS1?
THIS is Sony's answer to it's PSP failures?
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There is a tool that can convert a PAL game to NTSC. I did it with my copy of Wip3out SE. Now all I need is a bigger memory stick so that I can actually play the thing
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The PSone is not portable.
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To be fair, the PSP is only portable around your home because it is easily damaged and power hungry as well.
Anyway, homebrew FTW!
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There are four different control schemes, but the only two I've found use for are 1 and 4. In the former, L2 and R2 are mapped to left and right on the analogue nub (up being them both together), while in the latter the analogue nub is used for movement, and L2 and R2 are on the d-pad.
The fact that the PSP's d-pad is utterly rubbish has meant I've been using the analogue nub for movement in most games, but it's a pain in the ass for menus in Final Fantasy. Forunately, swapping between them is very quick and easy.
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That is not going to happen. The PS3 is in there to ensure you obey the DRM rules.
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Probably once the psp has given the ps3 enough of a leg-up in this regard for it to start selling well by itself.
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That must be a bitch.
That is not going to happen. The PS3 is in there to ensure you obey the DRM rules.
Yes but surely Sony knows that they're limiting the availability of who can download the Psone downloads online...
Oh PS1 you was riddled with piracy while you were hardware now you live on in Software to.
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sort out the ergonomics Sony - I'm tired of people making fun of my spasmed hands
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Except it's Linux support is so horribly gimped you'd have trouble emulating a SNES on the thing, let alone a PS1.
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That must be a bitch."
You can beat Psycho Mantis without using the controller trick. It involves destroying some statues in the room. The Colonel tells you about it if you bug him enough.
The far bigger problem with multi-disc games like MGS which don't let you save at the end of the disc (as opposed to those like Final Fantasy VII-IX and Xenogears which do), is that there's currently no way to save and move onto the next disc.
I believe there's a workaround for MGS, and both discs of Parasite Eve can be combined into one EBOOT, but for games like Star Ocean: The Second Story you're screwed for now. The only way to do it is to export your save game from the PSP, play past the disc swap in something like ePSXe on your PC, and then continue on the PSP.
Or download a save game at the start of the second disc, of course.
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I'm not sure if the PSP would be better off if this were available at launch, because Sony wanted (and for good reason) people to think of the PSP as "the power of a PS2 in your hand", and maybe the availability of PS1 emulation would've undermined that. It could also have helped immensely; but we'll never know...
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No.
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OOH! Didn't know that one.
You could just try and beat him without tricks, but that's pretty damn tough on the harder difficulties.
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The point is, it doesn't exist on the PSP. Anymore. Now with guaranteed hacking of every coming PSP firmware...
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So the official downloads had realtime decompression on the fly "first", if you will.
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How is ps3 linux support gimped? Serious question btw.
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There's not much memory available after the OS has loaded and access to the 3D bits of the RSX isn't supported so you can only really do 2D stuff.
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http://www.fast.org.uk/ a>
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I think console manufacturers should simply count themselves lucky that so many people buy their consoles (considering the high price of most of them, this time around especially) and count any post games sales as a bonus. Not a very proactive view in terms of the future of the games industry, but a fair and realistic one I feel.
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Does me for my 2 hours of commuting every day thank you very much...
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But being able to play Castlevania SOTN, Resident Evil, Chrono Trigger, Xenogears, Fear Effect and some of the other fantastic games on the PSOne... on the go. That just spells win for me.
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It's survived trips to Greece and Amsterdam, where it's been out and about (in Amsterdam) in the soft case in my pocket, and in my hands being played in bars, coffeeshops, train stations, airports and the hotel.
No need to take it anywhere in Greece, as there's girls and sunshine to enjoy, plus we don't have the GPS in Europe yet!!!
I even dropped it at Manchester airport, while sat in the departure lounge. Then I picked it up and carried on playing Liberty City Stories, Mario Kart and Burnout Legends.
No damage. Just use the Hori screen protector and put it in the soft case when ur done.
Sort out the Ergonomics and the controls, Sony.
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But it is time to be buying shed loads of ps1 titles which equals .......$$$$$$$
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+ RSI - For all of the Playstation controllers, plus especially the PSP.
And the NES and Master System pads.
Plus thumb injuries from the original Mega Drive pad.
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I think it's some kind of mental-focus thing.
/dons beard
'Men are never so serious, thoughtful and intent, as when they are At Stool.' (Gulliver's Travels)
/shaves
Let me know how the DVT claim pans out.
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How about for playing PSOne, PS2 and PS3 games?
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Only for game stores, though. 99% of PS1 games bought nowadays will be bought second-hand, meaning not a penny in income for Sony.
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"The PSone is not portable"
Indeed, but if a portable PS1 was created it would cost a damn sight less than the price of a PS3 and a PSP..£600 to play PS1 games on the go is a joke.
Heck, a portable PS1 should be about HALF the price of a PSP, which is effectively a portable PS2.
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Don't say that kind of shit, please: you never know how many publishers are listening.
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]http://ww w.duelinganalogs.com/?date=2006...[/link]
Hmmm
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Japanese top twenty software titles:
01. Grand Theft Auto: San Andreas (PS2)
02. Dragon Quest Monsters Joker (DS)
03. Sangokushi Taisen DS (DS)
04. Picross DS (DS)
05. Hotel Dusk: Room 215 (DS)
06. Wii Sports (Wii)
07. Wario: The Seven (DS)
08. Wii Play (Wii)
09. Pachinko Winter Sonata (PS2)
10. More Brain Age (DS)
11. New Super Mario Bros. (DS)
12. Common Knowledge Training (DS)
13. Animal Crossing: Wild World (DS)
14. Prince of Tennis: Doki-Doki Survival (DS)
15. The Idolm@ster (Xbox 360)
16. Mario Kart DS (DS)
17. Pokemon Diamond (DS)
18. English Training (DS)
19. Brain Training (DS)
20. Shining Force EXA (PS2)
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???? Whose top twenty, and in terms of what? Christmas sales?
Good name btw. Now what was that drone's name again. The one that nails the emperor right between the eyes with a reflected lazer beam.
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[link url=http://eg.nttpub. co.jp/ranking.html
]http://eg.nttpub. co.jp/ranking.html
[/link]
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Not much more of a joke than paying to play free flash games on your console...
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I hope you've learned a lesson there.
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Not much more of a joke than paying to play free flash games on your console...
Or not much less. People currently buying a PS3 are not buying because of anyhting that it IS, they buy because of what they hope it WILL BE.
Which is stupid if you ask me, but who does?
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That goes for every console. Look at the idiots that bought a 360 at launch. A full year later and nothing special (aka next gen) has been released yet (which isn't that surprising as it's just an xbox with a graphics update). And still there's lots of people 'enjoying' it. They've payed lots of money for it and will do everything to convice themselves it was a good buy. Same will go for PS3. Once people have bought the system and the 'next-gen' games never show up, they will slowly forget about it and get all excited again when the next 'next-gen' starts (probably somewhere 2008). People are short sighted idiots. That's why marketing works.
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Heck, I'd even buy a PSP if that were the case!
This forced route via the PS3 smacks of a fine mixture between desperation and short-sighted greed.
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Too poor for a 360 huh?
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so sega how about a saturn compilation to follow up the mega drive one on psp...
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I'd say there's plenty of good software available on psp these days without plumbing the ps1 era. Maybe it isn't the most cosmic of lineups, but it's more than enough to justify owning one.
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Anyone running out of juice on their PSP going to and from work should find a new fucking work.
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