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Forums - Sony Discussion - Why the PS5 should be backwards compatible with all Playstation consoles

0D0 said:
Regarding PS3, most of its games are already available on PS4, except a few gems. They could just work on those and make them available on PS4/PS5 or PS Now.

PS2 and PS1 could come back as re-released classics. They could select the most acclaimed games. Having full BC with PS2 and PS1 would benefit some players, sure, but most current gen players wouldn't give a damm. I think it'd be a waste of work. Unless we're considering plain software emulation which we know that will never happen due to many technical reasons that many don't fully understand.

That would be great considering people like myself who bought a ton of PS1 and 2 classics off the PS3 PSN digital store which are now locked onto that specific platform. It only does everything is no longer a care for Sony apparently. 

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WolfpackN64 said:
OneTime said:
It's not just the power and capabilities, you also need to license IP (for example, IBM owns the Cell processor from the PS3). In any case, from Sony's point of view it's all about selling new hardware and new games, and you have to see backward compatibility in that light.

So, if you want to play PS2, you are a Retro gamer, and you'll be one Ebay. Or you'll be buying your games one at a time through some equivalent of the Virtual Console App Store. Retro collecting is a pretty cool hobby anyway...

Emulating instruction sets and architectures can be an IP pitfall, but in case of the PS1&2 that's not a problem (since they are Sony designs and the MIPS instructions are quite old) and cleanroom reverse engineered emulation of instructions is a legal grey zone, but probably safe. Also, Cell is a dead architecture, so I don't think IBM would throw a fuss at it being emulated.

You don't need to emulate the instructions. - There are other ways to approach that horse.
Binary Translation for example, you intercept an instruction and "translate" it into a similar instruction that can be executed by the new host machine.

Emulation is intrinsically wasteful on resources... There is a reason why the Xbox One with it's woeful Jaguar cores is able to emulate the Xbox 360 with an uptick in framerates and frame times.

victor83fernandes said:

Are you going to pay the millions and millions needed to emulate the ps3 games? Even a powerful PC has trouble emulating a ps3. Each game would have to be rebuilt basically.

The PC isn't representative of what Sony can achieve, PC is taking the approach of reverse engineering to achieve backwards compatibility. (I.E. Lots of trial and error.)
Sony has the information to build an emulator from the ground up without needing to do any of that, so they can make an emulator with significantly less overhead as an instruction isn't being split up and interpreted as multiple other instructions which results in a corresponding hit to performance.

WolfpackN64 said:

The problem with PS3 games is the complexity of the CPU and thus the complexity of emulating instructions. I have no doubts the PS5 could run PS3 games judging by it's specs and what kind of PC you need to run RPCS3. The problem would be getting enough games to run perfectly. They could just as well use RPCS3, implement a compatibility list and try to get as many popular titles compatible.

Will they do it? Probably not. But it would net Sony a lot of goodwill.

The complexity of the Cell is a poor excuse, especially as the PS3 emulator is better than the Xbox 360 emulator.

The Cell is actually a little easier to emulate, because it uses so many "simple" low-performing cores which can translate really well to many-core powerful PC's, it was hard for developers to build games for, but it's actually a benefit to emulation.

Last edited by Pemalite - on 16 June 2020

--::{PC Gaming Master Race}::--

Would be nice playing on PS5 physically but something tells me there wont be physical. I have more but these games my mom found today the rest of my collection i owned/bought on my own there not on video here

Cute and honest Sega Saturn fan, also noone should buy Sega grrrr, Sega for life.

BraLoD said:
Otter said:

because it was two gamecubes stuck together ;)

With the power of one.

The power is in the duct tape you need high bandwidth tape.

PS5 have BC with PS4 baked in the chip itself. And since they haven't mentioned anything about PS1 to 3 I wouldn't count they having even if it was possible.

duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"

Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"

Azzanation: "PS5 wouldn't sold out at launch without scalpers."

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Blood_Tears said:
Sony is not going to add PS2 or PS3 BC at all. They want to sell you the PS2 and PS3 mini classic consoles with 20 preinstalled games on it for $149.99.

More than that, they like to sell the same game just ported for 5-10.

duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"

Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"

Azzanation: "PS5 wouldn't sold out at launch without scalpers."

KLXVER said:
Would love it, but its not going to happen. I think the only reason we got PS4 BC is Sony panicking because of MS. It would cut into their PSNow profits too much.

BC on Xbox has also been monetized though. There are OG Xbox and 360 games on Game Pass. You can buy most titles on BC as well.

PS Now could actually benefit from PS1, PS2 and PS3 emulators on PS5. It would mean you can play games on your hardware, which is better than streaming.

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