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• ATmega328/168 (Arduino Uno/Mini/Mini Pro)
• ATmega32u4 (Arduino Leonardo/Micro/Micro Pro)
• ATtiny25/45/85 (Not compatible with BIOS patch)
• Choosing your compilation options.
• Compilation.
• Configure fuses.
◦ For BIOS patch, H: DF, L: EE, E: FF
◦ Without BIOS patch, H: DF, L: FF, E: FF
• Injecting the code into the target via ISP.
• Soldering mode according to the diagrams.
- Pinout ATtiny25_45_85
- Pinout Arduino Nano
- Pinout Arduino Micro
- Pinout Arduino Pro Micro
- Pinout Arduino Pro Mini
- PU‐7 diagram
- PU‐8 diagram
- PU‐16 diagram
- PU‐18 diagram
- PU‐20 diagram
- PU‐22 diagram
- PU‐23 diagram
- PM‐41 diagram
- PM‐41 (2) diagram
Due to the extensive coverage of different PS1 models, there is no universal compilation, compiling can sometimes be a bit tricky.
The greatest strength of the PsNee modchip is the fact that it’s much more modern than PIC based modchips, and covers all PS1 models. Using AVR chips means that programming a PsNee chip is much easier, and many people may already have something like an Arduino which can be used as a PsNee modchip.
Using more powerful processors allows the modchip to work with American, European, and Japanese PlayStation 1’s with a single chip. It can even patch the BIOS Note that this BIOS patch dont works with ATtiny chips.
It supports the following microcontrollers:These chips fall into two categories, ATmega based chips, and ATtiny based chips. ATmega chips cost more, but allow for BIOS patching. ATtiny chips cost less. ATmega chips are also considerably larger in size, making them more difficult to fit into a system when compared to the ATtiny chips.
In North America we have NTSC-U/C consoles and TV’s, and in Japan there are NTSC-J consoles and TV’s. Meanwhile Europe and some other parts of the world there are PAL consoles and TV’s. In the case of the PlayStation 1 the modchip can be used to unlock the console’s ability to output video for any region based on the game being played.
The problem with this is that not all TV’s accept all input signals. For example if you put a PAL game into your modded system and try to play it on an American TV you might not get any video on your TV.
To get around this problem I recommend buying a cheap composite to HDMI converter. Typically these will take the weird analog signal that may be associated with a game from another region, and convert it into a nice and standard HDMI signal that your TV will display without any problems.
Japanese consoles with specific clocks will produce bad video signal there are mods to replace the crystal with a pulse generator https://github.com/L10N37/PSXTAL for more information.