PlayStation Development Network

i have ATmega328P Pro Mini
can this works ? and how to flashing the MCU ? what programer to used ?
console model 7500 JP

brill wrote: June 29th, 2022, 9:54 pm

Nextria wrote: June 23rd, 2022, 12:13 am Hello,

I have read the post, and I am a little bit confused.
As far as I understand the most points are the same as with the Psnee v7

VCC
SQCK
SUBQ
DATA
GATE_WFCK
GRD

But where are the points AX-BIOS, AY-BIOS and DX-BIOS on the PlayStation motherboards?

Obviously, the points AX-BIOS, AY-BIOS and DX-BIOS should be sought on the ROM BIOS chip (IC102)

Attached is the pinout of the 32 pin bios chip

p.s.: as it became known at the moment firmware contains a bug. if you want to use the console to listen to cd audio disks, you need to set a switch (Switch*(optional) on diagram) to disable bios patching. otherwise when you go into the cd player the console will hang/reboot. if you only plan to play, then this bug will not affect the launch.

As far as I can see, this bug still exists? Is there hope of a fix, or must we resign ourselves to using the switch?

Victini378 wrote: February 10th, 2024, 2:58 am...
As far as I can see, this bug still exists? Is there hope of a fix, or must we resign ourselves to using the switch?

As far as I know this bug has not been fixed. postal2201 did not have this bug, and I don't have the equipment to test it.

brill wrote: February 12th, 2024, 12:11 pm

Victini378 wrote: February 10th, 2024, 2:58 am...
As far as I can see, this bug still exists? Is there hope of a fix, or must we resign ourselves to using the switch?

As far as I know this bug has not been fixed. postal2201 did not have this bug, and I don't have the equipment to test it.

Ah OK. But does this bug happen on all PSXs? From a postal2201 video on YouTube it doesn't seem to since it starts the music player

Here is the video of postal2201 where he starts the music player in a PSone:

Testing the music player on SCPH-1000 with PsNee V8

brill wrote: February 12th, 2024, 12:11 pm

Victini378 wrote: February 10th, 2024, 2:58 am...
As far as I can see, this bug still exists? Is there hope of a fix, or must we resign ourselves to using the switch?

As far as I know this bug has not been fixed. postal2201 did not have this bug, and I don't have the equipment to test it.

What can I do to help you guys fix the bug?
I really want to fix this because I noticed that the memory card manager does not work also.
I have a SCPH-7000.

brill wrote: July 16th, 2022, 7:00 pm

antonio_1979 wrote: July 16th, 2022, 9:12 am Please, what are the pins: AX-BIOS, AY-BIOS and DX-BIOS on the IC102?

You should at least open the sketch file and look at it.

The pinout depends on the model of the console motherboard (which no one thinks it is necessary to specify).

However, here it is:

Code: Select all

//------------------------------------------------------------------------------------------------
//                         Select your console
//------------------------------------------------------------------------------------------------

//#define UC_ALL           // Use for all NTSC-U/C models. No BIOS patching needed.
//#define PAL_FAT          // Use for all PAL FAT models. No BIOS patching needed.
//#define SCPH_103         // No BIOS patching needed.
//#define SCPH_102         // DX - D0, AX - A7. BIOS ver. 4.4e, CRC 0BAD7EA9 | 4.5e, CRC 76B880E5
//#define SCPH_100         // DX - D0, AX - A7. BIOS ver. 4.3j, CRC F2AF798B
//#define SCPH_7000_9000   // DX - D0, AX - A7. BIOS ver. 4.0j, CRC EC541CD0
//#define SCPH_5500        // DX - D0, AX - A5. BIOS ver. 3.0j, CRC FF3EEB8C
//#define SCPH_3500_5000   // DX - D0, AX - A5. BIOS ver. 2.2j, CRC 24FC7E17 | 2.1j, CRC BC190209
//#define SCPH_3000        // DX - D5, AX - A7, AY - A8. BIOS ver. 1.1j, CRC 3539DEF6
//#define SCPH_1000        // DX - D5, AX - A7, AY - A8. BIOS ver. 1.0j, CRC 3B601FC8

For example, if let's say I have a SCPH-7000 model, then DX is soldered to the D0 pin of the BIOS and AX is soldered to the A7 pin of the BIOS (I attached a picture of the bios pinout above)

What is the key on the chip and how are the legs numbered will not be asked?

And don't forget to uncomment your model in the sketch file

The pinout for the PM41(2) bios looks different than PsNee V7 is that normal ?

Ewiko, yes ,its normal. The patching method is different.

I am finalizing a V8 that can use ATtiny25/45/85 and ATmega23U4, with a specific card manager to be able to put the fuses as it should be.
All the features are good, according to my tests on European and Japanese PS, I still have to review all the documentation

If you are interested in testing and giving me feedback, welcome https://github.com/kalymos/PSNee_V8/tree/test2

Hi guys
I've got a very weird result.

I have a PAL version of crash bandicoot and a SCPH-5500(NTSC-J) console. After installation I wasn't really sure that it worked just by plopping the DVD I still only got to the unrecognized DVD screen. However as one of my previous tries I actually got Tonyhax International working. Usually it would not accept the different region DVD, but with this mod while I can not directly boot, using Tonyhax it will show as a valid licensed DVD and go further and successfully boot(no swap disc, just proceed).

If anyone would have any ideas why it's not working in the standard boot, but works fine thru Tonyhax please let me know.

Posted this in the github as well, not sure if one place is better than the other to post.

Not sure what can be done to play original Dance Dance Revolution games on the Playstation. I just programmed and installed a PSNee V8 into my USA PSone. Everything works (backups, imports, originals) but can't get my original import DDR 2 and DDR 4 discs to play as a game. They boot as a audio CD. Tried booting the system first then inserting the disc, same results. Hoping this can be fixed in a update. I have another non PSNee non stealth chipped PSOne that boots the game but detects the chip and won't play further than the hardware modification notification screen.

Thanks Everyone!

kalymnos77 wrote: July 27th, 2024, 6:57 am I am finalizing a V8 that can use ATtiny25/45/85 and ATmega23U4, with a specific card manager to be able to put the fuses as it should be.
All the features are good, according to my tests on European and Japanese PS, I still have to review all the documentation

If you are interested in testing and giving me feedback, welcome https://github.com/kalymos/PSNee_V8/tree/test2

hi, I installed yout test2 on pal pu-18 5502, pro micro atmega32u4 5v 16mhz and it works even if when loading via arduino ide it gives a "fail". I programmed it via arduino as isp.

At the moment I don't have many CDs on hand but Gran Turismo 2 Pal starts but freezes (black screen) when I press start game.
I can already confirm that it worked with an old modchip, same thing with unirom cart.
other CDs I've tested work

Hi guys,

Been trying to get PSnee to work since 2019 ands never got a single one to work. Tried it on many boards with no luck.

I now want to give it another try since I have some 10 Japanese consoles that need bios patching...

Is there any link to a ready to a set flash files already configured?

Can anyone give me at least some ready files to test on an SCPH-3000 with schematics.

The problem is that information is scattered all over the internet and it's very hard to get a definitive answer.

Thank you,

KarimPolska wrote: January 18th, 2025, 5:45 pm Hi guys,

Been trying to get PSnee to work since 2019 ands never got a single one to work. Tried it on many boards with no luck.

I now want to give it another try since I have some 10 Japanese consoles that need bios patching...

Is there any link to a ready to a set flash files already configured?

Can anyone give me at least some ready files to test on an SCPH-3000 with schematics.

The problem is that information is scattered all over the internet and it's very hard to get a definitive answer.

Thank you,

Hello,
I've been poring over the documentation quite a bit; you can check out the wiki https://github.com/kalymos/PsNee/wiki.
I've done the documentation for the 3000, but I haven't been able to test it yet.
I've been able to start testing the 3500-5000, but for that one, I'm having a problem with the BIOS patch; I still need to dig into that.
For my other models, it works well, and I've been able to test them in many different configurations.

kalymnos77 wrote: April 10th, 2025, 7:55 pm

KarimPolska wrote: January 18th, 2025, 5:45 pm Hi guys,

Been trying to get PSnee to work since 2019 ands never got a single one to work. Tried it on many boards with no luck.

I now want to give it another try since I have some 10 Japanese consoles that need bios patching...

Is there any link to a ready to a set flash files already configured?

Can anyone give me at least some ready files to test on an SCPH-3000 with schematics.

The problem is that information is scattered all over the internet and it's very hard to get a definitive answer.

Thank you,

Hello,
I've been poring over the documentation quite a bit; you can check out the wiki https://github.com/kalymos/PsNee/wiki.
I've done the documentation for the 3000, but I haven't been able to test it yet.
I've been able to start testing the 3500-5000, but for that one, I'm having a problem with the BIOS patch; I still need to dig into that.
For my other models, it works well, and I've been able to test them in many different configurations.

Hey Kalymnos, what is the best way to contact you ?
I tried discord but i dont see you online.

Regards

Nextria