This was one of the earlier PlayStation 1 board designs that included RCA composite video output ports on the back. Most SCPH-1001’s here in the United States had this board inside.
Additionally many Japanese systems had this board including many SCPH-3000, SCPH-3500, and SCPH-5000’s.
PU-8 PsNee modchip installation diagram
- Pin VCC – VCC
- Pin GND – GND
- Pin 3 – Debug TX
- Pin 4 – BIOS A18
- Pin 5 – BIOS D2
- Pin 6 – SQCK
- Pin 7 – SUBQ
- Pin 8 – DATA
- Pin 9 – GATE_WFCK
Above are two installation diagrams for two different versions of the PU-8. The easiest way to know which you have is to look at the size of the Mechacon controller chip (next to SUBQ and SCLK/SQCK). If it’s large, use the bottom diagram, if it’s small, use the top diagram.
Here are some tips I have for you when you are soldering your chip into the PU-8.
- You don’t need to connect pins one and two of the ATtiny45 chip. Just desolder the wire.
- Use a multimeter to probe around for alternative VCC and GND points closer to where you position your chip for a cleaner installation.
- Try to position your chip towards the middle of where all the wires need to go, to minimize wire length.
Diagram success rate
Here’s a list of people who have successfully modded their console with this diagram. Leave a comment and I’ll add you to the list.
- Nobody yet.
This section has photos of some successful installations which you can use to get a better understanding of how everything is wired and positioned.
- Nobody yet.