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mirror of https://github.com/kalymos/PsNee.git synced 2026-05-09 08:37:11 +00:00
kalymos 897ccc79c1 PSNee v9.0 Update
New PSNeeCore v2: Completely rewritten core engine for all supported MCUs.
Auto-MCU Detection: Manual board selection removed. Automatically detects ATmega (328/168/128/PB), 32U4, and ATtiny families at compile time.
Deep Init Optimization: Hard-shutdown of unused internal modules (ADC, DAC, Timers) to minimize power draw and electrical noise.
Native PB Support: Full compatibility for 128PB and 328PB (PRR2 registers and extra Ports).
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2026-03-20 11:04:53 +01:00
2026-03-20 11:04:53 +01:00
2026-03-20 10:47:43 +01:00
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2025-03-09 19:47:20 +01:00
2025-03-19 09:03:11 +01:00
2025-04-21 12:32:38 +02:00

PSNee V8.7

THE modechip supports the largest number of Playstation 1 variants, and the largest number of microcontrollers

For all useful information consult the Wiki

Logo

Features

  • Remove Disk Region Protection
  • Patch BIOS
  • A specific library for card support, to solve the fuse setting problem.
  • The mode does not take care of changing PAL <-> NTSC video output (in other words if you use a Japanese console and you put European games, or in older European models you use American or Japanese games... the display will not be correct)

Supported Playstation 1

All US models, all European models, and the vast majority of Japanese models.

Supported platforms

  • ATmega328(A/P/PA) @16Mhz
  • ATmega168(A/P/PA) @16Mhz
  • Atmega32U4 @16Mhz
  • ATtiny25/45/85 @8Mhz no BIOS patch!

Model that I personally tested

test Example of gray image
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Description
PsNee, an open source stealth modchip for the Sony Playstation 1
Readme Unlicense 368 MiB
Languages
C 66%
C++ 34%