https://github.com/yurisizuku/psp-mschange

A psp plugin to emulate inserting or removing Memory Stick
https://github.com/yurisizuku/psp-mschange

homebrew plugin psp

Last synced: 5 days ago
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A psp plugin to emulate inserting or removing Memory Stick

• Host: GitHub
• URL: https://github.com/yurisizuku/psp-mschange
• Owner: YuriSizuku
• Created: 2023-12-12T13:19:56.000Z (11 months ago)
• Default Branch: master
• Last Pushed: 2023-12-13T04:13:57.000Z (11 months ago)
• Last Synced: 2023-12-13T14:39:17.192Z (11 months ago)
• Topics: homebrew, plugin, psp
• Language: C
• Homepage:
• Size: 5.86 KB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

        
# MS Change  

![GitHub Workflow Status (with event)](https://img.shields.io/github/actions/workflow/status/YuriSizuku/psp-MSChange/build_mschange.yml)  

For spoofing some games checking (such as "xxxのディスクがセットされていません" error),  this plugin can emulate inserting or removing Memory stick with key combo.  

The project is developed on `PSP3000 6.60proC2 CFW`, and also tested on `PSV2000 Adrenaline 6.61pro`.  

## Usage  

1. Add `ms:/seplugins/mschange/mschange.prx 1` in `ms:/seplugins/game.txt` config file and then `reset vsh`

2. Start a game, accroding to the game instruction  

   `select+up` to emulate inserting memory stick  

   `select+down` to emulate removing memory stick  

3. After that, most of games create a save on the memorystick, then you can disable this plugin

## Build

1. Download [pspsdk](https://github.com/pspdev/pspsdk) or [minpspw(windows)](https://sourceforge.net/projects/minpspw/)  

2. set env `PSPSDK` to the sdk path  

3. use `build_mschange.bat` or `build_mschange.sh` to compilethe project

``` shell

# example of build with pspsdk docker

docker pull ghcr.io/pspdev/pspsdk:latest

docker run -d -it --rm -v $(pwd):/project --name pspsdk_run ghcr.io/pspdev/pspsdk

docker exec -i pspsdk_run bash -c "cd /project/script && export PSPSDK=$PSPDEV && chmod +x ./build_mschange.sh && ./build_mschange.sh"

```

## Tested Games  

ULJM06404 ヴァルプルガの詩  

ULJM06390 Flowers1  

## Known Issue

* ~~Game exit crash~~, fixed by adding delay in the main thread

## Reference  

[npdecrypter](https://github.com/codestation/npdecrypter)  

[isochange](https://www.gamebrew.org/wiki/ISOchange_PSP)  

[ppsspp sceIo](https://github.com/hrydgard/ppsspp/blob/60402909f8bf1e2f04a9aec5e81ae82a3e21aee3/Core/HLE/sceIo.cpp#L1884)  

[ppsspp_niddb](https://github.com/pspdev/psp-ghidra-scripts/blob/master/ppsspp_niddb.xml)