____ _ _ _ ______ _____
| _ \ | | \ | | ____|/ ____|
| |_) | __ _ __| | \| | |__ | (___
| _ < / _` |/ _` | . ` | __| \___ \
| |_) | (_| | (_| | |\ | |____ ____) |
|____/ \__,_|\__,_|_| \_|______|_____/
EMULATOR
A nearly complete NES emulator in a single 700-line C++ source file, based on LaiNES.
cloc main.cpp
1 text file.
1 unique file.
0 files ignored.
github.com/AlDanial/cloc v 1.74 T=0.03 s (33.6 files/s, 27684.4 lines/s)
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Language files blank comment code
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C++ 1 6 60 757
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Features
- Cycle accurate
- Savestates (beta, expect bugs)
- Extremely compact: only 700 lines in one source file with no dependencies
Requirements
- C++11
- SDL2
Building
*nix systems
git clone --recursive https://github.com/Ta180m/BadNES && cd BadNES
g++ main.cpp -o badnes -std=c++11 -lSDL2main -lSDL2 -O3
Windows
git clone --recursive https://github.com/Ta180m/BadNES && cd BadNES
g++ main.cpp -o badnes -std=c++11 -IC:\mingw\include\SDL2 -LC:\mingw\lib -w -Wl,-subsystem,windows -lmingw32 -lSDL2main -lSDL2 -O3
Usage
*nix systems
./badnes [path to ROM]
Windows
Drag ROM over badnes.exe
Alternatively, use
badnes.exe [path to ROM]
Controls
UP - UP
DOWN - DOWN
LEFT - LEFT
RIGHT - RIGHT
A - A
B - S
START - ENTER
SELECT - SPACE
SAVE STATE - Q
LOAD STATE - W
Compatibility
BadNES implements the most common mappers, which should be enough for a good percentage of the games: - NROM (Mapper 000) - MMC1 / SxROM (Mapper 001) - UxROM (Mapper 002) - CNROM (Mapper 003) - MMC3, MMC6 / TxROM (Mapper 004) - AxROM (Mapper 007) (Not well supported, expect bugs!)
You can check the compatibility for each ROM in the following list: http://tuxnes.sourceforge.net/nesmapper.txt
FAQ
Why the name?
http://www.usaco.org/index.php?page=viewproblem2&cpid=1041
Why did you do this?
I really like LaiNES: it's very minimal and compact — but it has several dependencies, so I try to write the shortest NES emulator possible, in a single source file.
There's no sound!
I'm working on it right now.
What do you mean by "nearly complete"?
I'll say it's complete once I finish implementing the APU.
This game doesn't work!
Check to make sure BadNES implements its mapper. Also, Mapper 7 is known to be especially buggy.
Credits
Special thanks to Andrea Orru for creating LaiNES, the emulator that this project derives much of its code from.