PS3 backwards compatible on SLIM??

Before I get flamed and spammed and told it's not possible, giving the current circumstance of the JB and other CFW anything is possible still at this point. Forgive me if there's a topic or mention of this someone else, but I haven't found anything.

Note: I'm looking at this from the stand point of a PSP. To me, it's a smaller/lesser ver. of the PS3 especially since the XMB is identical (even with the talk now of a PSP2*)

Quick specs:
PS3 Slim on GeoHot 3.55

So poking around and found in the directory: "dev_flash/" were folders marked "ps1emu, ps2emu and pspemu". Most people would think eh, whatever...but within those folders are self files and a bin file. (This may vary for others, dunno.)

dev_flash/ps1emu:
ps1_emu.self
ps1_netemu.self
ps1_newemu.self
ps1_rom.bin

dev_flash/ps2emu:
ps2_emu.self
ps2_gxemu.self
ps2_softemu.self

dev_flash/pspemu
flash0 (folder)
-font (folder) - there's more content in this folder
-logo (folder) - there's one item in this folder
-usermodule (folder) - there's more content in this folder
release(folder)
psp_emulator.self
psp_translator.self

...anyways, what I'm getting at is there's .self files in here that seem like it would give some information into developing EBOOT.bin files for PS1, PS2, and PSP.

On the PSP scene there's tools already created for making EBOOTS.bin for PS1 and PSP (which goes to show the scene is pretty huge and sticking it to Sony like crazy!) With these files, maybe there's something in them that's useful for not making emulators to work for the PS3 but actually creating EBOOT's that'll work on the system.

That's just my thoughts since I have no programming knowledge.

PSP's firmware offered psx emulation in it as of ~3.02. All DA did was make a program that converted the psx isos into a readable eboot, similar to what you could download on the psp from psn. The reason PS2 emulation is more difficult is because of the hardware. Now, everyone talks about the emotion engine (from now on, EE) as the reason that the ps3 can't play ps2 games, but that's not really the case. 80gb backwards compatibles (like mine) don't have the EE; it's emulated through software (and the reason you see those files; firmware upgrades aren't unit specific, for the most part it just throws all the files on all the units, then let's hardware checks do the rest). $ony has also patented the ability to emulate the EE through the SPUs on the ps3, so they have to ability to release that in the future. The real reason that ps2 games can't be emulated on the ps3 is because the ps2 graphics synthesizer (from now on, GS) was removed in the non-backwards compatible units following the one that I have (ceche01).

See, by removing the EE and emulating it with software, they lost compatibility with about 20% of games. By removing the GS, they are unable to emulate a ps2 on the ps3 at all. They would need to also emulate the GS through software, which most people doubt the unit even has the processing power to handle. Even if a working emulator could be made, it would run like hell and be compatible with very few games. Now, if $ony started re-packaging ps2 games to run on the ps3 while still retaining most of their core files (i.e., not porting them), then possibly modified eboots of ps2 games could be made to run on the ps3, similar to psx on psp; I sure as hell wouldn't hold my breath though. I don't see it happening anytime in the near future.

Quote:

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Originally Posted by blazie151

Now, if $ony started re-packaging ps2 games to run on the ps3 while still retaining most of their core files (i.e., not porting them), then possibly modified eboots of ps2 games could be made to run on the ps3, similar to psx on psp; I sure as hell wouldn't hold my breath though. I don't see it happening anytime in the near future.

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I forgot I had even started this topic...excuse the rising from the dead.

As recent topics have come about, it's finally be said it's software related (which I had kinda thought), but now I guess it's down to, who's going to take the time to hammer out the kinks, so to speak.

Since PSX discs can be read by PS3 without anything, it's just compiling an eboot.bin (guessing the method on PSP should work?) I may test it to see what happens.

Was recently reading that there was a way to dump PS2 bios and got to thinking, if part, most or all of that is within those self files that's on the PS3? Like most of the "secrets" that's being "hidden", everything is already in the code, it's just other line(s) in the coding that's throwing up blocks. I don't think the EE ever was really required in the first place to play PS2 games...if anything it was just a buffer.

Another thought and theory I had, was GoW 1&2 was re-released to play on the PS3, in a PS3 format...question is, if nothing was enhanced about the game itself and it was left in its original format, what line of code was added? Just like games on PSP were the key to allow parts of it unlocked, I think the key lay within the game for a break to allow PS2 to play on all PS3s.

I forgot about this thread as well, lol. In order for ps2 games to work, someone would have to emulate a GS inside an emulator, as well as unlock the EE emulation that's on all ps3s as is. Again, the reason the initial 60GB models had backwards compatibility is because they had both a EE and a GS. In the 80GB models, they still had the GS but used software emulation for the EE. So we know that EE emulation is already capable. What's missing is GS emulation. Someone would need to emulate the GS inside the SPUs or RSX in order to get it working. Basically, the emulator would have to be build from the ground up, since there are currently no working PPC based emulators with source code to port. Keep in mind, emulating the PS2 on the PS3 is only a little easier than doing it on an XBOX 360. What's presonally annoying me is that everyone throws around the lack of backwards compatibility as being caused by not having an EE, but it's actually the lack of a GS that's causing the lack of backwards compatibility.

i was thinking today of a way of potentially booting up ps1 backups and the process would involve converting the images to psp format which is EBOOT.PBP . Having a look at the way mini's boot "because there in EBOOT.PBP format" than you could potentially just load them from the xmb menu by uploading or a boot manager that imports ps1 to the game folder and converts it this way (if you wanted to delete them you would from the xmb) "???? anyone have a bit of time to spend???? have a look at the file structure of the mini's tho could be great!

im sure it has all been said b4 but i haven't seen it. after patching the right numbers ie: game id into the related files should work potentially??

any idea's? soz doesn't help with ps2 games obviously tho.. how do psn ps1 games boot in the xmb same process?

Well, PSN PS1 games are essentially a PS1 game in a PSN pill. I'm actually gonna look at it when I get home tonight and see if I can figure anything out. PS1 games boot natively; they don't need EE or GS emulation, so getting a BM or other method to play them from a backup without an emulator should be possible. I need a PSN PS1 title uploaded for me to look through. Has anyone bought one? If I could get the whole gameid folder upp'ed, it would really help. BM mounting would be better, as it would be easier to stealth; unfortunately, I don't have to PS3 programming knowledge to do that unless I take a serious and quick crash course on it. All my programming skills are geared to Windows programs and ASP web sites.

Quote:

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Originally Posted by blazie151

Well, PSN PS1 games are essentially a PS1 game in a PSN pill. I'm actually gonna look at it when I get home tonight and see if I can figure anything out. PS1 games boot natively; they don't need EE or GS emulation, so getting a BM or other method to play them from a backup without an emulator should be possible. I need a PSN PS1 title uploaded for me to look through. Has anyone bought one? If I could get the whole gameid folder upp'ed, it would really help. BM mounting would be better, as it would be easier to stealth; unfortunately, I don't have to PS3 programming knowledge to do that unless I take a serious and quick crash course on it. All my programming skills are geared to Windows programs and ASP web sites.

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I think Lyricalremix was looking at it the same way I am. PSP doesn't require a Game ID at all, so why would the PS3 considering the file format is the same? True, it would be needed for games that ARE on PSN, but he and I are thinking along the lines of the ones that aren't. I have some Japanese games I'd like to test out honestly. Lyricalremix, have to remember, there are some games that are in .bin format. (most that I've seen are EBOOT.bin)

Questions that arise are:

1. Would there be a need to pkg to install? (certain CFW).
2. Would there be a need for BM's? (I would hope not cause there's not a single one that's "appropriate IMHO")
3. Why hasn't anyone else thought of this yet? (lol)

Anyways, back to the net to do some research.

PSP scene is much further along, and has a way to display those games on the xmb. PS3 does not have a way to boot them directly or display them on the xmb directly without a pkg. Also, the game disc and isos from ps1 games have gameids, I just don't remember where they are. I haven't messed with them in awhile.

1. The game would need a way to boot, so it would either need a burnt disc, a psn pill pkg, or a boot manager that mounts it.

2. BMs would be nice, multiple reasons, some of them I can't talk about till I release my stealth online method.

3. For starters, everyone is so focused on PS2 that PS1 has been getting ignored. I also didn't realize that slims could play PS1 games, or I would have looked into this. Now that its got my attention, I'm gonna have some fun with it.

Again, can someone that's downloaded a PS1 PSN game upload the whole gameid folder so I can see what makes it tick, so to say.

Did some digging around, Castlevania: SoTN = SLUS-00067

...then I looked at the disc...and it's right on the front of it! It's on all the games for the various systems...PSX, PS2, PSP and PS3.

Also if you put the game in your CD/DVD drive, it tells you.

Ok, like I said, it got my attention. OK, so there's 2 psx emulators on in the ps3 firmware. One for loading from disc, 1 for loading from hard drive (that also supports upscaling). The PSN PS1 games use pretty much the same format as the PSP PS1 PBP files, with only a little repackaging needed. The current problem is the iso.bin.edat file which I need decrypted and preferably keys for. Which means not only do I still need a PSN PS1 game, I also now need someone with the NPDRM decryption payload running and able to help me. Of course, I wouldn't need all that if the keys were released that GH found...