Patent Shows PS3 to PS2 Backwards Compatibility - No PS2 Chips!


251w ago - PlayStation 2's use the emotion engine as a processor, which was removed from PS3s to save money.

This killed off PS2 backwards compatibility, but Sony has a new software solution.

A patent filed by Sony has a method for the cell processor to emulate the emotion engine which can bring PS2 backwards compatibility to all PS3s.

To quote: There are two main ways to emulate hardware. Interpretation is when target code is decoded and converted into a language the host can understand. The other strategy is to decode and recompile programs in the host's language.

Maybe the concept is better explained another way. Interpretation is like having someone constantly translating English to Japanese for you, non stop, twenty four hours a day wherever you go. Decoding and recompiling is like someone translating a sets of words and putting them in a dictionary you can reference.

Sony developed a way to translate instructions from an Emotion Engine chip into chunks that can be referenced.

Figure 2 from the patent is a schematic drawing of how the system works. Figure 3A is a drawing of the PlayStation 2's chipset. Figure 3B is the emotion engine. Figure 4 is where the whole story gets interesting! It's "an example of a host system based on a cell processor that may be configured to emulate the target system." The target is figure 3B, the Emotion Engine.

There aren't too many reasons why Sony would want the PS3's Cell processor to emulate the PS2's Emotion Engine and the key one is backwards compatibility.

Perhaps, a firmware update or the new PlayStation 3 slim, which Ars Technica say is coming this fall, will utilize this technology.



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Comments 27 Comments - Go to Forum Thread »

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snowisawesome00's Avatar
#27 - snowisawesome00 - 249w ago
Ok, they've got a way to emulate the EE. but what about the GS?

dezza's Avatar
#26 - dezza - 251w ago
It's about damn time Sony!

adrianc1982's Avatar
#25 - adrianc1982 - 251w ago

And who knows, I might even get around to going back and finally playing the old Ico games and GOW games, without having to go get another ps2 (or bothering getting that one back from my sis). I think where this will really shine is in being able to download ps2 games and it actually work now.

I think you did get the point at the end, I for example didnt play all the ps2 games I wish I had. Having ps2 compatibility on my ps3 is good but not as good as having the games on the psn store. I can go back to play games I missed out that are playing a major role today, like GOW a game I didnt play.

Or what about a great rpg you didnt get to play, lets be honest the ps2 had hundreds and hundreds of amazing titles and I doubt you had the chance to play them all. The ps2 lived for almost 10 years surprising gamers and you can get almost any genre out of it. I do go back to consoles or emulators to play games that I missed out, like chrono trigger or final fantasy vii I played them for the first time last year.

I understand that a lot of people dont want to play something "old" but I and a lot of people do play old stuff thats epic or that made a difference. I enjoy an old game as much as a new game as long as its a GOOD game, specially RPGS and shooters.

dagnillo's Avatar
#24 - dagnillo - 251w ago
I have to admit, I never understood why BC was always made such a big deal. I rarely (if ever) go back and play old games once I've moved to the next generation. And if I do, I just use the PS2 I have sitting around to do that (actually I got rid of mine already, but that's because I didn't want to play any old games, and sis wanted the ps2).

I mean I understand the benefit of it and all, just alot of times I hear it hyped like it's one of the most awesome features ever. And THAT is what I don't get, it's nice, but not THAT awesome imo (maybe that's just cause I always keep the old system til I realize I'm not playing any old games at all anymore).

That being said, this is good news because evidently alot of people do want this. And this should prove to help Sony with the evident demand for this feature to be put back in.

And who knows, I might even get around to going back and finally playing the old Ico games and GOW games, without having to go get another ps2 (or bothering getting that one back from my sis). I think where this will really shine is in being able to download ps2 games and it actually work now.

Well I personally am excited because I never had a PS2 and there are only a few games I really would like to play, so it's not worth it for me to shell out the money for a PS2. Especially since the feature used to be included in PS3's and was removed.

dunny 471's Avatar
#23 - dunny 471 - 251w ago
i have a 80gb ps3, mine plays ps1 but not ps2.. is there any info on this?













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