melonDS/README.md
Nadia Holmquist Pedersen 38b0d21c22
Support loading Zstandard-compressed ROMs (#1667)
This is different from the archive support in that the compressed ROMs
are standalone files, rather than archives, making it possible to use
them exactly as if they were regular ROMs, while saving a bunch of space
on disk. This is supported both for DS and GBA ROMs, though given GBA
ROMs' generally small size it's mostly useful for the former.
2023-04-28 19:19:58 +02:00

139 lines
6.6 KiB
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<p align="center"><img src="https://raw.githubusercontent.com/melonDS-emu/melonDS/master/res/icon/melon_128x128.png"></p>
<h2 align="center"><b>melonDS</b></h2>
<p align="center">
<a href="http://melonds.kuribo64.net/" alt="melonDS website"><img src="https://img.shields.io/badge/website-melonds.kuribo64.net-%2331352e.svg"></a>
<a href="http://melonds.kuribo64.net/downloads.php" alt="Release: 0.9.5"><img src="https://img.shields.io/badge/release-0.9.5-%235c913b.svg"></a>
<a href="https://www.gnu.org/licenses/gpl-3.0" alt="License: GPLv3"><img src="https://img.shields.io/badge/License-GPL%20v3-%23ff554d.svg"></a>
<a href="https://kiwiirc.com/client/irc.badnik.net/?nick=IRC-Source_?#melonds" alt="IRC channel: #melonds"><img src="https://img.shields.io/badge/IRC%20chat-%23melonds-%23dd2e44.svg"></a>
<br>
<a href="https://github.com/melonDS-emu/melonDS/actions?query=workflow%3A%22CMake+Build+%28Windows+x86-64%29%22+event%3Apush"><img src="https://img.shields.io/github/actions/workflow/status/melonDS-emu/melonDS/build-windows.yml?label=Windows%20x86-64&logo=GitHub&branch=master"></img></a>
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</p>
DS emulator, sorta
The goal is to do things right and fast, akin to blargSNES (but hopefully better). But also to, you know, have a fun challenge :)
<hr>
## How to use
Firmware boot (not direct boot) requires a BIOS/firmware dump from an original DS or DS Lite.
DS firmwares dumped from a DSi or 3DS aren't bootable and only contain configuration data, thus they are only suitable when booting games directly.
### Possible firmware sizes
* 128KB: DSi/3DS DS-mode firmware (reduced size due to lacking bootcode)
* 256KB: regular DS firmware
* 512KB: iQue DS firmware
DS BIOS dumps from a DSi or 3DS can be used with no compatibility issues. DSi BIOS dumps (in DSi mode) are not compatible. Or maybe they are. I don't know.
As for the rest, the interface should be pretty straightforward. If you have a question, don't hesitate to ask, though!
## How to build
### Linux
1. Install dependencies:
* Ubuntu 22.04: `sudo apt install cmake extra-cmake-modules libcurl4-gnutls-dev libpcap0.8-dev libsdl2-dev qtbase5-dev qtbase5-private-dev qtmultimedia5-dev libslirp-dev libarchive-dev libzstd-dev`
* Older Ubuntu: `sudo apt install cmake extra-cmake-modules libcurl4-gnutls-dev libpcap0.8-dev libsdl2-dev qt5-default qtbase5-private-dev qtmultimedia5-dev libslirp-dev libarchive-dev libzstd-dev`
* Arch Linux: `sudo pacman -S base-devel cmake extra-cmake-modules git libpcap sdl2 qt5-base qt5-multimedia libslirp libarchive zstd`
3. Download the melonDS repository and prepare:
```bash
git clone https://github.com/melonDS-emu/melonDS
cd melonDS
```
3. Compile:
```bash
cmake -B build
cmake --build build -j$(nproc --all)
```
### Windows
1. Install [MSYS2](https://www.msys2.org/)
2. Open the **MSYS2 MinGW 64-bit** terminal
3. Update the packages using `pacman -Syu` and reopen the terminal if it asks you to
4. Install git to clone the repository
```bash
pacman -S git
```
5. Download the melonDS repository and prepare:
```bash
git clone https://github.com/melonDS-emu/melonDS
cd melonDS
```
#### Dynamic builds (with DLLs)
5. Install dependencies: `pacman -S mingw-w64-x86_64-{cmake,SDL2,toolchain,qt5-base,qt5-svg,qt5-multimedia,libslirp,libarchive,zstd}`
6. Compile:
```bash
cmake -B build
cmake --build build
cd build
../tools/msys-dist.sh
```
If everything went well, melonDS and the libraries it needs should now be in the `dist` folder.
#### Static builds (without DLLs, standalone executable)
5. Install dependencies: `pacman -S mingw-w64-x86_64-{cmake,SDL2,toolchain,qt5-static,libslirp,libarchive,zstd}`
6. Compile:
```bash
cmake -B build -DBUILD_STATIC=ON -DCMAKE_PREFIX_PATH=/mingw64/qt5-static
cmake --build build
```
If everything went well, melonDS should now be in the `build` folder.
### macOS
1. Install the [Homebrew Package Manager](https://brew.sh)
2. Install dependencies: `brew install git pkg-config cmake sdl2 qt@6 libslirp libarchive zstd`
3. Download the melonDS repository and prepare:
```zsh
git clone https://github.com/melonDS-emu/melonDS
cd melonDS
```
4. Compile:
```zsh
cmake -B build -DCMAKE_PREFIX_PATH="$(brew --prefix qt@6);$(brew --prefix libarchive)" -DUSE_QT6=ON
cmake --build build -j$(sysctl -n hw.logicalcpu)
```
If everything went well, melonDS.app should now be in the `build` directory.
#### Self-contained app bundle
If you want an app bundle that can be distributed to other computers without needing to install dependencies through Homebrew, you can additionally run `
../tools/mac-bundle.rb melonDS.app` after the build is completed, or add `-DMACOS_BUNDLE_LIBS=ON` to the first CMake command.
## TODO LIST
* better DSi emulation
* better OpenGL rendering
* netplay
* the impossible quest of pixel-perfect 3D graphics
* support for rendering screens to separate windows
* emulating some fancy addons
* other non-core shit (debugger, graphics viewers, etc)
### TODO LIST FOR LATER (low priority)
* big-endian compatibility (Wii, etc)
* LCD refresh time (used by some games for blending effects)
* any feature you can eventually ask for that isn't outright stupid
## Credits
* Martin for GBAtek, a good piece of documentation
* Cydrak for the extra 3D GPU research
* limittox for the icon
* All of you comrades who have been testing melonDS, reporting issues, suggesting shit, etc
## Licenses
[![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](http://www.gnu.org/licenses/gpl-3.0.en.html)
melonDS is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
### External
* Images used in the Input Config Dialog - see `src/frontend/qt_sdl/InputConfig/resources/LICENSE.md`