PSNee V9.0

This modchip supports the widest range of PlayStation 1 models and the largest variety of microcontrollers.

For all useful information, please consult the Wiki.

Features

• Removes Disc Region Protection.
• BIOS Patching.
• Specific library for board support to solve fuse setting issues.

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).

Note: European models from SCPH-7002 onwards typically handle NTSC signals correctly without display issues, but SCPH-102 requires a BIOS patch.

See the NTSC/PAL Display Mismatch example at the bottom of the page.

Supported PlayStation 1

All models are supported.

Supported Platforms

• ATmega328(A/P/PA) @16MHz
• ATmega168(A/P/PA) @16MHz
• ATmega32U4 @16MHz
• ATtiny25/45/85 @8MHz (Note: No BIOS patch support!)

Caution

BIOS Patching: PB-series (328PB/128PB) is currently unoptimized.
For stable BIOS patching, please use A/P/PA or 32U4 variants.

NTSC/PAL Display Mismatch

Typical result when playing a game from a different region without a signal converter.

Verified Hardware (Personal Test Collection)

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