Copy protection string of the Yaroze boot disk

Niiiice. That exact CD will work =^_^=

Now I just need to get an unmodded PS1 and a Yaroze disk. =)

 

Well some of that is easy ... Good luck with it all too ^^

 

That disk is awesome. I figured out that I can read the copy protection string straight out of the CD controller's RAM using it. It even works on consoles that ordinarily return four spaces for the 1A command, such as Yarozes, debugging stations, and apparently midnight blues.

This means that I don't need an unmodded system for this. It's fairly simple for me to use the swap trick with GameShark CDX to boot the ROM ID tool.

Now I just need the Yaroze disk =) eBay, here I come... =(

 

See, didn't I tell you guys the swap trick would work. I was going to make my own disc (which I called the boot disc) however.

Don't waste your money Myra. I have a disc coming in the mail and I will read it for you and let you know

 

No one disputed the swap trick working or not.

 

Odd. I distinctly remember someone putting that idea down. I think some posts have been edited and removed. Never mind then.

My Yaroze discs arrived in the mail today. Give me a few hours while I write the code

Problem. The Yaroze CD-ROM will not boot on a normal PlayStation 1 because my PSX is PAL (I don't have a Japanese or American system for further testing of this situation).
It will only boot on a mod chipped PSX which defeats the purpose. The modchip injected the SCEE license for me and the Yaroze disc booted.

So, my conclusion is that the CD-ROM does in fact have the SCEI license.
The only way to be absolutely 100% certain that it is not SCEW is for me to replace my BIOS and Mechacon with a Japanese one, hook on a logic probe, tap the modchip data (as someone said before) or just get a Yaroze console to do this test.

If you wanted to know if SCEW would boot, then you would need to write to the wobble (unless I did one or two of the tests above)

 

No, people put down you writing your own boot disc. Which isn't possible. You then changed the definition of a boot disc to be a disc to something that isn't a boot disc. That's where the issue was

 

By boot disc, I meant me making one like this: http://forum.redump.org/topic/4991/...psx-bios-directly-on-console-control-cd-unit/ (which I did not know was already done).
I was going to use this code if (*(char *)0xbfc7ff52=='E') to do a comparison check but the tool above is much more powerful and better.

I am terribly sorry if I gave you the wrong idea or impression.

@Which isn't possible - ANYTHING is possible. The only thing not possible, is the impossible

 

My understanding if the op wanted to see if the boot string of the yaroze disc is SCEW. If it is, surely it won't boot in your console or a NTSC one either. So your conclusion above doesnt make sense?And my thoughts are - if that discs shows what boot strings the cd controller allows - why not run it on a yaroze console and see if it has the extra string in there? If it is and the yaroze disc won't run on the retail console from any regional - bt the process of elimination you know what it is?Or am I missing something?

 

Yes, he wanted to know if it was SCEW and from my testing, it is not SCEW but instead SCEI.
SCEW is known to be bootable on any region system (well, so the rumor is). However, the disc did not boot on my non-modded PSX which makes that rumor busted

I would run it on a Yaroze, but I don't have one. Then again, even if I had a PAL or NTSC Yaroze, the disc would maybe not even boot because the Yaroze boot disc I have is Japanese (SCEI).

If someone can send me a Japanese Yaroze console, Japanese PSX (not the DVR ) or PAL Yaroze boot CD then I can boot the disc correctly without a modchip using the swap trick method as we have gone over already.
At the moment, the swap trick will not work for me because the disc will not boot at all.

 

Like I said, just use a stealth modchip. It will boot the Yaroze CD, patching the wooble code, then, you can query the disc controller to get the real wooble code. The modchip will be disabled. That's the way protected game worked on modchipped PS.

As I said, your code does nothing useful. It only reads the bios, not the CD. The tool I linked to can send commands directly to the CD controller, so you can query many things (you can have a look a Dr Hell's webpage about the various commands). You don't need a "boot disc", just a way to load unsigned code, and a way to communicate with the CD controller. Both of theses requirements have been met.

 

Or, the SCEW can only be booted in a Yaroze or Debug system, and will not boot in retail systems (be it PAL, NTSC-J or NTSC-U).
BTW: The NY boot disc is the same for the US and UK Yaroze, but it's different for the JP Yaroze (this one has an older version of the app).

On a side note: OP is a she

 

Thats another possibility.

Well I will be dumping all the CD-ROM's I got, including Lightwave 4.0 (yes, I will release LW 4.0 for free) and releasing them all on PSDEV because donations have been going strong for us and I want to thank you guys back for doing so.

Hehe yeah I addressed her correctly before. I made a typo, sorry.

 

I already released Lightwave 4.0 in the File Downloads forum here
In fact, all NY (and related) discs are already in the File Downloads forum.

 

If you still need it, I just found my DTL-S3035 Net Yaroze boot disc. I can send it you when I send the Dreamcast next week.

 

The Lightwave 4.0 released here does not work. It wont start up on my Windows 98 PC. Don't know if I did something wrong...

 

As stated in the thread where I shared it, it has a copy protection based on a Parallel-port dongle.
I don't have said dongle, so I can't provide a solution to that; but I'm sure you can find a way to bypass it or emulate it (for this you'll probably need the dongle to first dump its contents though). Google can help with additional information; I don't think it's appropriate or allowed in this forum.

That said, the ISO I posted was created from the original disc and verified to be 1:1 (ie. all files are readable and checksums match between the ISO and the disc).

 

Ah yes. Thats right. I had a feeling it required a dongle. I even remember now sending you a PM about it
You will need the original dongle to dump the contents, which for some reason no one has anymore.

Also, I could not get a CRO so I can't check the wobble for confirmation. Bad will have to take over and do it.

 

Ok, after 3 pages of intense discussion, anyone got any idea what is the outcome of this thread?

Do-able? If yes...video-proof it
Not-do-able? Just end this thread and we all learn something.

 

Is what doable?

This thread isnt about burning the copy protection area - its about finding out the string on the yaroze disc.