[xrey1]

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Also a good point there. Especially as these extra PCBs are not symmetrically connected at all.

[xrey1]

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Thanks

I think I will make new pictures from my actual PU-8-11 board and mark the traces there with the Pico letters so it is better to visualize without the extra PCB.

I realized you have to zoom quite in on the last picture to see the labels properly, but I confirmed that my board looks identical to the one in the last picture.

I found even another earlier type of PU-8 (Version 7) board in a modchip tutorial but that seems to be a PU-7 board. I confirmed that also from the xStation PU-7 Tutorial. 

PU-7 has a slightly different layout but the same Sony chip there as on the PU-8 early board.

Well, luckily I don’t have that board, but I think even that PU-7 could work too, as there was also a xStation (DeltaStation) PCB for this too.

The longer I look at it, I think this works, as the connections on the Pico seem all the same from the xStation; they only changed the device to something cheaper and open source.

The funny thing is I found just now quite a bit of proof on AliExpress. They sell now the PCBs PU-7, PU-8 late, PU-18 just with a ribbon cable now to a Pico and a similar

xStation for PU 7, PU 8 EARLY, PU 8 LATE,PU16, PU 18  offering seamless integration with PICOSTATION

 

So I think this quite confirms that it should work. I personally wanted to solder the connections by hand and with wire so I could do it quite cheaply.

Maybe I will also mark the Pico letters on the PU-7 picture too, so some people can solder them by hand without buying the whole kit from China.

PU-16, at least from the Ali picture, should also work, but I haven’t seen any tutorials on that so far.

• This reply was modified 4 months, 1 week ago by xrey1.
• This reply was modified 4 months, 1 week ago by xrey1.
• This reply was modified 4 months, 1 week ago by xrey1.
• This reply was modified 4 months, 1 week ago by xrey1.
• This reply was modified 4 months, 1 week ago by xrey1.
• This reply was modified 4 months, 1 week ago by xrey1.

[xrey1]

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I am kind of new to this topic, as I was just looking for PS1 mods the last 2 days. I got a PS1 for free with a PU-8 board, but the early model 1658-467-11

SCPH-1002, GPU: CXD 8514Q, CPU: CXD8530BQ

It says that the Pico Mod would work for the PU-8 but I noticed there is an early PU-8- 11/12 and late PU-8- 21/22/23/41 board with small different layouts.

I was only able to find the DIAGRAM PicoStation 100X PU8 for the late version. I guess there is no solder point diagram right now for the early version? So I was looking around to find another solution.

I saw that the previous mod with xStation could work with both models, and they had 2 versions of their mod quick solder boards for early and late boards.

I got a little hooked there to figure it out.

So I compared the xStation late board with the PicoStation soldering points.

I was quite happy to find these pictures. So I started tracing the different positions back and forth

They were quite similar, I think I found all the points there, purple letters should be all the Pico Connections.

01= C= GND
02= J +8V
03= E
04= Q
05= N
06= K
07= L
08= F = Lid button
09= A
10= NC
11= GND
12= M= CLK
13= B
14= I
15= P
16= H
17= G = Reset
18= GND
19= O
20= D

After that I compared the xStation late board with the xStation early board, as the 20-pin connector should be the same layout, and traced them back out again.

Numbers from the 20-pin connector, letter should be Pico

M is the clock at another position, and F is the Lid button, maybe J the +8V can be connected like in the early Pico manual some elsewhere, and you have to remove some resistors and lift the 4 pins from the IC, so all the things it says in the EARLY_PU-8_Install_Guide.

I am not ready to do this mod right now, as I need to buy the components first, so this is just a thought experiment for now.

What do you think? Could this work if I connect a Pico like this to a -11 board? Or is there something I overlooked or made a mistake on?

Feedback is highly appreciated.

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