Update README.md

README.md

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 # NGC-224
 
-- [ ] serial
-- [ ] timer
-- [ ] autdio
-- [ ] video
-- [ ] memeory
+A Gameboy emulator built in Rust.
+
+
+![](https://github.com/Hanaasagi/NGC-224/blob/master/.screenshot/pokemon.gif)
+
+
+## Features
+
+- [x] CPU and instructions
+- [x] PPU(GPU)
+- [x] Cartridge(MBC)
+  - [x] MBC1
+  - [x] MBC2
+  - [x] MBC3
+  - [x] ROM ONLY
+- [x] Memory Management
+- [x] Joypad Control
+- [ ] Audio
+- [ ] Serial
+- [ ] CGB-MODE
+
+
+## Building and Installation
+
+```Bash
+$ git clone https://github.com/Hanaasagi/NGC-224.git
+$ cd NGC-224
+$ cargo run -- -p <your rom path>
+```
+
+
+## KeyBoard Mapping
+
+| Keyboard     | Gameboy |
+| --------     | ------- |
+| <kbd>M</kbd> | Start   |
+| <kbd>N</kbd> | Select  |
+| <kbd>w</kbd> | Up      |
+| <kbd>s</kbd> | Down    |
+| <kbd>a</kbd> | Left    |
+| <kbd>d</kbd> | Right   |
+| <kbd>j</kbd> | A       |
+| <kbd>k</kbd> | B       |
+
+
+
+## Bug Report
+
+If the program panic, please send the `coredump` file in current directory and tell me which rom you are playing. Additionally, the process receive a `USR1` signal for starting a stepping debug.
+
+
+
+## Reference
+
+Thanks for the article and open source project below.
+
+- [Gameboy Development Wiki](https://gbdev.gg8.se/wiki)
+- [GameBoy 仿真器 / accu.cc](http://accu.cc/content/gameboy/preface/)
+- [Gameboy Emulation / codeslinger.co.uk](http://www.codeslinger.co.uk/pages/projects/gameboy/dma.html)
+- [mvdnes/rboy](https://github.com/mvdnes/rboy)
+- [mohanson/gameboy](https://github.com/mohanson/gameboy)
+- [HFO4/gameboy.live](https://github.com/HFO4/gameboy.live)