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.

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