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mirror of https://github.com/kalymos/PsNee.git synced 2026-02-27 17:14:06 +00:00
kalymos 0077acf94f refactor: optimize sector filtering and unify system initialization
- Core logic: Optimized 'isDataSector' using a single 0xD0 bitwise mask for faster 0x41 sector detection.
- Architecture: Moved 'board_detection()' into 'Init()' for a cleaner entry point in 'main()'.
- Settings: Updated 'settings.h' with improved constant definitions and macro organization.
- Performance: Reduced instruction count in the main loop and improved peripheral power management.
2026-02-25 21:56:05 +01:00
2026-02-23 21:57:24 +01:00
2025-03-09 19:47:20 +01:00
2026-02-23 19:48:31 +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 243 MiB
Languages
C 86.8%
C++ 13.2%