PSNee is compatible with all retail PlayStation 1 models and various AVR microcontrollers.
For all useful information, please consult the Wiki.
- Disc Region Protection: Removes region locks.
- BIOS Patching: Provides enhanced compatibility.
- Board Support: Custom boards manager to simplify fuse settings and hardware configuration.
Important
Video Signal Note: This modchip does not handle PAL/NTSC video signal conversion. Playing games from a different region may result in an incorrect display (e.g., NTSC games on early PAL consoles, or PAL games on NTSC-U/C or NTSC-J consoles).
European models from SCPH-5502 to SCPH-9002 typically handle NTSC signals correctly. However, SCPH-102 requires a BIOS patch to support it.
See the Example of a distorted image at the bottom of the page.
- ATmega328(A/P/PA) @16MHz
- ATmega168(A/P/PA) @16MHz
- ATmega32U4 @16MHz
- ATtiny25/45/85 @8MHz (No BIOS patch support!)
Caution
SCPH-7000 NTSF J (BIOS Patch & Memory Cards): On SCPH-7000 models, the BIOS patch has an issue with memory cards. The only way to bypass it is to install a switch on the mod to disable the BIOS patch. This is done according to the available diagram.
Typical result when playing a game from a different region without a signal converter.

From left to right: NTSC-J, PAL, and NTSC-U/C & Asia models.
