does the SCPH-990x PS1 exists ?

I don't think they ever said the PS1 was better than any other CD player, just that for the same quality you had to pay a lot more. But you also have to make changes to the PS1 as well.
As long as the PS1 has an external DAC then you could replace it with something better.

It's just like people buying a Nissan Micra and then putting a bigger engine in it.

It depends on how good their modchip is. When they'd run out of the original debug subcpu then it would have been cheaper to code a new modchip than run another set of chips.

 

Libcrypt it's a totally different protection, it's isnt based on modchip detection, but on subchannels. So it's a totally different things

 

Okay.
Still,PAL-I RE3 copies still check the presence of a chip,and Dino Crisis does that too.
And that's not all,Dino Crisis has different copy protection systems:for PAL copies on PAL chipped machines,it doesn't show the warning screen,but freezes the game at the violence warning.NTSC-U/NTSC-J machine may either do the same or bring up the software terminated screen.

 

No and no XD
Never PAL games check for modchip, either RE 3 PAL I....

Again, that's the libcrypt protection, not the antimod.

 

According to redump PAL Resident Evil 3 has a libcrypt copy protection only, not a modchip detection.
Some PAL titles were copy protected while some NTSC titles detected a modded system. I must say I haven't seen a libcrypt + modchip detection combo ever.

Seems that way now. Not knowing ROMID info I thought it was 7003 based on the case, BIOS and parallel I/O.

 

Dino Crisis does.It was the only PSX game to be copy protected in every region.(PAL,NTSC-U and NTSC-J)

 

No. Only PAL release is copy protected (by libcrypt). Other regions had a modchip detection.

Libcrypt PAL releases discouraged people to copy games (as improperly copied game would lock up or do weird stuff)
while modchip detection NTSC releases discouraged people to mod their systems as it would stop playing even legit games.


That means you can't use a libcrypt game to check if the system is moded because those games don't check that at all.
Game would lock up even if you ran it on a debug unit or with a swap method.

 

Oh.Then it explains why my PAL copy freezes on the violence warning screen.

 

I have a copy of Dino 1 and 2 NTSC U/C at home. I'll try it out tonight.

I'm glad that we finally got more info out of it. May be I should run ROMID across all systems to see if there is any undumped one. lol

 

7002 could be one,tichua,but I guess you don't have any PAL 700x system there,do you?

 

I only have PAL Debug systems. But I'm interested in running ROMID on the 7000W. it's region free but not booting CD-R

 

For running ROMID on the 7000W,do the swap trick for playing backups.It's on youtube.

 

It's got the right boot ROM for a 7501 too - the 700x series used a 4.0 boot ROM with a different kernel (CEX-7000 in the kernel line) - but I guess it had bugs since they went back to the old one afterwards.

The other thing I've just realized is that the ROMID CD is mastered with Japanese license data on it, and obviously doesn't have any wobble groove data (since it's a CD-R) - but the 19 03 60 Dx 01 data contained "SCEA" - which is the correct territory for the CD controller, but not the disc. The only place I can think of that this might have come from is a modchip.

Since we now know that the unit has a stock ROM, this also implies that the license string on the boot screen should always be "SCEA", no matter what disk you boot, since that's the string in the mechacon RAM - but from what I remember early on in this thread the thing that seemed unusual about the system was precisely that this string changed...

Is it possible to check this again?

When you boot the ROMID disc, what does it display below the "Licensed by Sony Computer Entertainment Inc" string? SCEA or SCEI?

 

I think I understand what happened now. I messed up this one (9903) with another one (7000W). the 7000W's string change based on the region of the disc but it won't boot CD-R (unless you do swap trick). I'm reconfirming everything right now. It has been 10+ yrs so my memory is a bit rusty.

 

I tested the 9903 with Dino Crisis 1 and 2 (Original disc). The game boots up and plays just fine. No warning screen or freezing. I don't have other games to test yet. I might need to find it on fleebay or download an iso to test it out.

When I boot ROMID disc, it shows SCEA. When I boot NTSC-J disc, it still shows SCEA. I don't have any PAL discs on hands to test at the moment. I can look for PAL games in the attic and test it out if necessary.

And I think I messed up. The 7000W changed the string to SCEI for NTSC-J games and SCEA for NTSC-U/C Games. I ran ROMID on it and it's shows "UNDUMPED"

 

Like V.P Aslik said:
"Well,whaddya waitin' for?"Dump it!

 

Yes, AT THE TIME - I have no dispute with that. Just not nearly 20 years later.

Heres a good explaination of taking era accurate information and applying it to today:

At the time, people were keen to hack the original xbox for its cheap processing power. Today, its pointless as faster and better stuff are around.

You need to take information from a period in time with the correct context. The PS1 being an amazing audio player is much the same.

 

Awesome. That model (7000W) seems to be the special "10 million model".
Myria has the same one, as it can be seen in this thread. He also noticed that the BIOS was undumped.

Unfortunately he only posted MD5 and SHA hashes but not CRC32.
If you dump it and get the same hash it would pretty much confirm the BIOS so it's info could be added to BIOS database on redump project.

 

Shendo: Can I have the URL or the CSV (or whatever format it is) of the BIOS db ? I can see what I have and what is not in there. I might be able to help out if possible.

 

Sure, http://redump.org/datfile/psx-bios/

CoolerKing seems to be directly involved so if you have any findings he's the one to contact.