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The Official GT4 Thread
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23. April 2005 @ 00:59 _ Link to this message    Send private message to this user   
Wow,sorry man I missed that much information but yeah I would definately like to take a look at it.I think the best bet would most likely be to compare two bios file,an older release of Toxic to the new improved Bios.That would give us a hint on where to look,and sorry to Dasha74 for overlooking that information.Yeah I wish I seen that much information you know me man I would gladly help out.
Quote:
The farthest I can get is working those crytograms in the newspaper by statistical analysis, but that's about it. A bowl of cereal, a pen, and a sunday newspaper every week isn't enough experience to even begin this kind of project :)
Hahaha lol probably one of the funiest things I heard in awhile man,but hey it is worth a try right.I am using satellite connection,so not like dsl/cable or anything like that,but pretty decent downloads.I will be sure to check it out as soon as I can,once again sorry to Dasha74 for overlooking the info supplied.If I see anything out of the ordinary will report to Dasha74.




...........................:SiG cReAtEd By Phantom69:............................
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samuels
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23. April 2005 @ 01:49 _ Link to this message    Send private message to this user   
This is from gear pro:
Lead out address: 2763936
Layers: Dual layer ptp
Layer 0 physical start sector: 196608{30000h}
Layer 1 physical start sector: 1338143{146b1fh}
Layer break(physical address): 4294770689{fffd0001h} [Quote]

my #'s came out a little different

Lead out address: 2764096
Layers: Dual layer ptp
Layer 0 physical start sector: 1578655{18169fh}

Layer break(physical address): 1382048{1516aoh}

i didn't get to get layer 1 :( and i'm PAL
Senior Member
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23. April 2005 @ 02:02 _ Link to this message    Send private message to this user   
Hey Remy this would probably be good to look at if you are messing with extracting Elf files from the Toxic bios also,such as the hdloader in the ToxicOSv0.3 an so forth.Not bad so far,but still like you mentioned alot of work.Maybe something can be worked out of the ToxicOS newest version,by comparing it to a already modified version is what I am saying.It doesn't hurt to look further into it,but pretty much the DL patch is probably hard to find.The hdloader probably could be spotted though,which would be a good start ;).




...........................:SiG cReAtEd By Phantom69:............................
crowy
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23. April 2005 @ 02:17 _ Link to this message    Send private message to this user   
I copied the disk to my drive with DVD Decrypter and then mounted it on a virtual drive with alcohol.This is where my readings came from the virtual drive.I don't know if that makes a difference?I'm on PAL to.
sharky22
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23. April 2005 @ 04:36 _ Link to this message    Send private message to this user   
Whats with this Actel thing, I thought the coding was in the Toxic OS, I think you should be checking out the Toxic OS the latest one and find out what they have done to it so that a Dual Layered DVD+R works on the PS2. Is there a link where I can get teh newest Toxic OS? I have been searching on google for about an hour and can't find it, they haven't even got a website. If someone has the link to the latest Toxic OS that would be great.

I was thinking about something else, what if we get a PS2 emulator and run GT4 on it and run it in debug mode, that way we can check where the laser checks for the secod layer.
sharky22
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23. April 2005 @ 06:24 _ Link to this message    Send private message to this user   
OK, i've downloaded the Toxic BIOS 1.3 and Toxic OS 0.3. Now I need a debugging software to see what actually goes on in this file.
speccyfan
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23. April 2005 @ 08:57 _ Link to this message    Send private message to this user   
http://ps2emu.efx2.com
this emulator has a lot of debugging information,i'm f**ked if i can understand any of it,last bit of code i sorted out was on a certain rubber keyed 48k type super-calculator!!,good luck mate.
crowy
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23. April 2005 @ 10:00 _ Link to this message    Send private message to this user   
This might be useful:
Verbatim Technology Moves DVD Forum-compliant 4x DVD-R Dual Layer Media from Concept to Testing

LAS VEGAS, NV (January 7, 2005) ? Verbatim Corporation announced today that it has begun shipping engineering samples of its new 4x DVD-R Dual Layer (DL) media to DVD burner manufacturers and their software suppliers for read/write and compatibility testing. Shipments for consumers will begin late in Q1 2005, after the official specification is finalized. The specification enables the new DL-compatible burners to write a complete 8.5GB Verbatim dual layer DVD-R disc in about 25 minutes.

Verbatim and its parent company, Mitsubishi® Kagaku Media (MKM), were among the first to confirm the technical feasibility of 4x speed recording of dual layer DVD-R media. To ensure high performance without sacrificing reliability or compatibility, Verbatim and MKM developed unique dye materials and coating techniques, as well as manufacturing techniques for stamping the grooves into the media that guide the write and read processes. Broad compatibility is maintained by using a thin layer silver alloy that serves as a reflector in the upper layer. The technologies developed by Verbatim/MKM allow the laser beam to pass through the first layer and the reflective layers to write to the second layer. The result is consistently reliable write/read performance for each layer.

By offering two recording layers, Verbatim?s new 4x DVD-R DL discs provide a capacity increase of about 80 percent, compared to the 4.7GB DVD-R media. With the higher capacity, consumers will be able to store up to 4 hours of DVD-quality video (16 hours of VHS-quality video) or 8.5GB of data on a single side while maintaining compatibility with the majority of today?s DVD players, recorders, drives and burners.

Availability
Backed by a limited lifetime warranty, Verbatim 4x DVD-R DL media will be available through leading retailers, Internet resellers and distributors across the country late in Q1 2005.
crowy
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23. April 2005 @ 10:13 _ Link to this message    Send private message to this user   
This is interesting:
ASUS DRW-1608P Technical Specifications
Performance

* DVD-ROM Read: 16x, Max
* CD-ROM Read: 40x, Max
* DVD+R Write: 16x, 12x, 8x, 6x, 4x, 2.4x
* DVD+RW Write: 8x**, 6x, 4x, 2.4x
* DVD+R DL Write: 6x, 4x, 2.4x
* DVD-R Write: 16x, 12x, 8x, 6x, 4x, 2x, 1x
* DVD-RW: 6x, 4x, 2x, 1x
* DVD-R DL: 6x*, 4x, 2x
* CD-R Write: 40x, 32x, 16x, 10x, 4x
* CD-RW Write: 24x, 20x, 16x, 10x, 4x
* DVD/CD Random Access Time: 130/120 ms

*The drive will offer DVD-R Dual Layer compatibility through a firmware upgrade once the DVD-R Dual Layer specification has been officially approved by the DVD Forum. The write speed for selected DVD-R Dual Layer and +R Double Layer media types can also be increased to 6X through this firmware upgrade. **The +RW Alliance is currently finalizing the +RW 8x format and the product can be enhanced to support this media through a firmware upgrade once the +RW 8x specification has been officially approved by the +RW Alliance.
sharky22
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23. April 2005 @ 11:12 _ Link to this message    Send private message to this user   
crowy i dont think this has anything to do with the problem we are having here. Your post was regarding Verbatim that are making a 4x DVD-R DL discs, and the other one is about the Asus drive that can write up to 4x on DVD-R DL. I don't want to offend you mate but this stuff has nothing to do with this thread. We are trying to backup a dual layered game here, most of us have dual layered burners and discs that are capable of working on a PS2, but the thing we have to do is to burn in PTP mode, if Verbatim or Asus said that they got out a DVD burner which is able to burn in PTP mode then i would'nt have commented about your post.

Also I was thinking, why don't someone try and make 2 images of the game, putting the first layer on 1 image and the second layer on another image, then burn the first one onto one layer, and burn the second layer onto the other layer, that way we could probably burn both of them as PTP. I haven't got a dual layered DVD burner but if someone has got it why don't you try and burn it like that on DVD Decrypter.
crowy
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23. April 2005 @ 11:50 _ Link to this message    Send private message to this user   
sharky22 sorry to offend you:
You can't burn parallel track path DVDs, because any recordable dual-layer DVD is manufactured as OTP (layer 1 has the Opposite Track Path to layer 0).

Parallel Track Path DVDs can be mastered and replicated, but not "burned". Perhaps some day PTP recordable media will be available. But it is not available today. Until it does become available, if ever, all recordable DVD-9 discs are OTP.Gear mastering edition pro gives you the option of burning ptp/otp. However:
If you are having DVDs replicated at a factory, you can use GEAR PRO Mastering Edition to select either parallel track path (PTP) or opposite track path (OTP). You would then have your replicator manufacture the discs to your specifications.

If you are burning a double-layer disc, you don't have a choice. All DVD+R DL discs are manufactured as OTP. The difference between a PTP and an OTP disc is in the direction of the spiral track on layer 1 (the top layer, "behind" layer 0). In both cases, layer 0 has a spiral track starting at the inside, and going to the outside. When the DVD recorder/player switches to layer 1, it refocuses the laser, but the disc keeps spinning in the same direction of rotation. A PTP disc has a track on layer 1 that is the same as layer 0, from inside to outside. An OTP disc has a track on layer 1 that goes from the outside to the inside; the opposite as layer 0. Since recordable and eraseable discs use a pre-grooved track, they have to be manufactured either as a PTP or an OTP disc right from the start.
Setting the track path in GEAR won't change the physical layout of the pre-groove on the recordable DVD.
Sorry to those of you that have already read this a few pages earlier
if sharky22 had bothered to read previous posts I wouldn't have to repeat myself.DVD+DL media is OTP all the PTP burning programmes in the world won't change that.That's why this DVD-DL is so important and the burners that support them.PLEASE do some research b4 posting rubbish.
samuels
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23. April 2005 @ 12:09 _ Link to this message    Send private message to this user   
OK....iv'e been racking my brain about how to get this onto a dvd 5(with no regard to OTP/PTP- as stated before by me,i don't think this is the issue).i'm not practised enough to be able to complete the task,however will give it a try,(practise makes perfect eh?)the thought was removing all the unwanted files...I.E ...epson and NET,then sifting through the critical PS2 files and deleting the epson files/replacing &renaming them with dummies,now by doing this...surely that is enough to bring the size down,even if you have to sacrifice a little bit of a movie file.this is the old school method,and i was wondering why nobody has done it this way again? but then again i suppose,because we can't find the exact point for the dvd checks.....i realise xbox games are completely different,with just deleting unwanted files,just a thought,but by crikeys it hurt thinking about it *L*

This message has been edited since posting. Last time this message was edited on 23. April 2005 @ 12:13

Senior Member
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23. April 2005 @ 13:03 _ Link to this message    Send private message to this user   
The Bios file is stored in the Actel chip,that is why we are talking about he Actel chip.You would have to compare an older release to the new release though,because nobody can pinpoint exactly what is needed without looking at an older release.I checked out the Designer program right,some stuff I just couldn't use because I didn't register it.I still think it is heading in the right direction with messing with the ToxicOS,that patch code would be really hard to spot though.It would probably be one string located in the bios.The cool thing about the program is the core builder,you can even mess with the core of elf files I would assume.Still messing with it,kinda looking at the ToxicOSv0.2 and ToxicOSv0.3 comparing to see what has been changed.You have to look at the .elf files,ToxicOSv0.2 is 701KB and the ToxicOSv0.3 is 709KB in size.So it is a 8KB difference which is a big difference in code to be honest.I am also comparing another file also,the Hdloader ToxicOSv0.2 which should give me another hint what to look for in ToxicOS.




...........................:SiG cReAtEd By Phantom69:............................
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23. April 2005 @ 13:07 _ Link to this message    Send private message to this user   
The Epson folder shouldn't be messed with Samuels reason is that irx files are located in the folder.The files outside the .Vol files are important and probably shouldn't be messed with.




...........................:SiG cReAtEd By Phantom69:............................
sharky22
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23. April 2005 @ 13:16 _ Link to this message    Send private message to this user   
crowy. I HAVE READ THE WHOLE THREAD. If you read the thread you would not post something about a new DVD writer that can write onto DVD-R DL at 4x, and Verbatim about their new DVD-R DL that is capable of being burned at 4x. That is nothing to do with the topic we are talking about. What we are talking about here is GT4 is a PTP disc and can't be backed up using a DVD burner because of the PTP and OTP problem, but what i wanted to say was what if we make 2 images one that goes on the first layer that burns from the center of the disc to the outer and burn the second image onto the other layer again from the center to the outer, if that is possible then i think we can back up this game, so thats why i want someone to try this method if they have a dual layered burner.
samuels
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23. April 2005 @ 13:53 _ Link to this message    Send private message to this user   
@ l-burna,the epson folder is full of ERX files not IRX,and just looking at them, it looks like it has something to do with .ELF
samuels
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23. April 2005 @ 14:06 _ Link to this message    Send private message to this user   
slowly making my way thru,but still not enough,the J1,J2,W1 AND W2 folders could go,but that only saves us 182 MB's,not near enough to put on DVD5
sharky22
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23. April 2005 @ 14:21 _ Link to this message    Send private message to this user   
samuels you have to remember that the GT4.VOL and GT4L1.VOL have to be combined together otherwise it wouldn't work because it would try to search the the GT4L1.VOL file even if you did record it, it would be on the worng side of the disc. If you merge both the GT4.VOL and GT4L1.VOL files together then it is not going to search for the GT4L1.VOL and you would have everything working.
samuels
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23. April 2005 @ 14:23 _ Link to this message    Send private message to this user   
:) i realise this,trying to work on it now
Senior Member
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23. April 2005 @ 15:04 _ Link to this message    Send private message to this user   
Yeah but the Epson folder along with the rest of the folders outside the .Vol files are module files,related to booting the game and running certain parts of the game.It is kinda like functions each module file does a specific task,they are undetermined though so I can't really say what each one does.I just know that the module files shouldn't be messed with,because as mentioned each one of the files does a certain task.If you dummy those files it would be like getting rid of part of the game,making it where you will get the black screen of death.The .Vol files being joined together is true though,that has to be done by fixing the header of the .elf file of the game(CORE.GT4).The algoriths mentioned have not been solved to extract from the .Vol files though,as Remy mentioned.Inside the munged .Vol files is the actual game that can then be edited and what not(movies,sound etc...).




...........................:SiG cReAtEd By Phantom69:............................
sharky22
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23. April 2005 @ 16:19 _ Link to this message    Send private message to this user   
i found this emulator called nSX2, it has a debugger installed as well so i tried the gt4 on it but couldn't get it to work, i also tried to load the toxic os but couldn't get it to load up. Anyway i'm not sure if i'm allowed to post the link where i got it from but i am gonna post it because i think this program could be of use to someone here that could use it and probably debug the gt4 or the toxic os. Heres the link

http://nsx2.emulation64.com/downloads.html
crowy
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23. April 2005 @ 17:09 _ Link to this message    Send private message to this user   
SHARKY22,please read what has been said it's the media (dvd+dl)that is the problem.All dvd+dl discs are pre-mastered in otp format.A PTP disc has a track on layer 1 that is the same as layer 0, from inside to outside. An OTP disc has a track on layer 1 that goes from the outside to the inside; the opposite as layer 0. Since recordable and eraseable discs use a pre-grooved track, they have to be manufactured either as a PTP or an OTP disc right from the start.You CANNOT burn a OTP disc in PTP format.The laser follows the pre-groove on both layers.PLEASE understand this.YOU can't change the physical layer of a disc!!!!!Now don't make me repeat this again.(Sorry to everyone that understood this the first time!)
sharky22
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23. April 2005 @ 18:42 _ Link to this message    Send private message to this user   
hey crowy calm down, when somone doesn't understand something you don't go mad at them. If you were in school or college and the teacher is yelling at you because you don't understand what he/she is saying then you would get upset wouldn't you? just calm down, i understand now, the dvd+r dl discs are manucfactured using pre grooved track meaning the tracks on layer0 is going one way and the tracks on layer1 is going the other way.

Now that we have this understood, why dont we do something about that actel thing, or toxic OS, i have a ps2 emulator that i downloaded which can debug the games, now i was thinking of debugging the toxic os by loading the .elf file, i done that but the thing crashed. Maybe I need to configure it properly, if anyone wants to try this out I have posted the link on this thread and I'll post it again on where you can download it from.

http://nsx2.emulation64.com/downloads.html

cmon people with this software we might know whats so special about the toxic os. obviously the toxic guys found the dvd checks and they put it in the toxic os 0.3 so that it bypasses these checks. they said they were gonna make a patch to put on the actual dvd but they said that 2 months ago and i don't think they would be making any patches because if they wanted to make it they would have made it immediately, because they know where those dvd checks are.
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23. April 2005 @ 20:20 _ Link to this message    Send private message to this user   
The best PS2 emulator that is available at the momment would probably be PCSX2.They are the first to actually emulate GT4 to the start menu,of course it isn't playable but still that is alot of improvement as far as emulation goes.You can load the ToxicOS and debug with the program also.You can find it at this link if you want to try it out http://www.pcsx2.net you will have to extract your own bios from your PS2 or either find one on the net though.I can't help or assist anyone on getting the bios files from your PS2,because it is copyrighted by Sony it would be illegal.This emulator will play the ToxicOS also,so if you really want to mess with emulation then this would be the program to use.The debugger is probably off though,can't really say it is a very good debugger because they used PS2 demo discs to make the program with.The emulator will not run though without a PS2 bios or any other options in the program,so if anyone wants to go the emulation route I would suggest using this program.




...........................:SiG cReAtEd By Phantom69:............................
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23. April 2005 @ 21:05 _ Link to this message    Send private message to this user   
It is still in beta stage,but this is an example of ToxicOSv0.3 using the emulator http://kytec.com/view.php?fid=17674 .My computer isn't strong enough to play it at full speed so the video is kind of choppy.If I upgraded my video card and tweaked the program better though the result would be pretty good.




...........................:SiG cReAtEd By Phantom69:............................
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