kastorcode / chip-8-emulator-typescript

CHIP-8 emulator that runs on a browser developed with TypeScript

CHIP-8 Emulator TypeScript

👷 Developed by Matheus Ramalho de Oliveira
🔨 Brazilian Software Engineer
🏡 Goiânia, Goiás, Brasil
✉️ [email protected]
👍 instagram.com/kastorcode

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This software runs programs written for the CHIP-8 computing architecture directly in the browser. This is the first emulator I program to improve my software engineering skills.

Architected and programmed during the Build a Chip-8 Emulator in JavaScript that runs on a browser course.

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Screenshots

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Controls

|1|2|3|C| = |1|2|3|4|
|4|5|6|D| = |Q|W|E|R|
|7|8|9|E| = |A|S|D|F|
|A|0|B|F| = |Z|X|C|V|

ArrowLeft | Numpad4 = scroll to canvas
ArrowRight | Numpad6 = pause and scroll to rom info
Backspace | Escape = stop
Enter | Space = toggle pause
Numpad0 | Numpad5 = full screen

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Tools used

Chip-8 Technical Reference
Git
TypeScript
Visual Studio Code
Webpack

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Topics covered

1. Understanding what is Chip-8;
2. Creating our Chip-8 virtual microprocessor;
3. Creating our Display;
4. Creating the support code and live server;
5. Connecting the Display to the HTML and scaling up the resolution;
6. Creating our Memory;
7. Creating the Registers;
8. Creating the Keyboard;
9. Create our char set sprites from 0-F and load into memory;
10. Drawing sprites in the display;
11. Implement Delay Timer;
12. Implement Sound Timer;
13. Understanding binary files;
14. Creating our Disassembler and our first Chip-8 instruction CLR;
15. Creating our instruction set file;
16. Loading our first ROM into Chip-8 memory;
17. Understanding opcode, how Chip-8 stores data, Big Endian vs Little Endian;
18. Disassembling opcodes and sending for execution;
19. Implementing all 35 Chip-8 instructions.

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8️⃣ Installation and execution

1. Make a clone of this repository;
2. Open the project folder in a terminal;
3. Run yarn to install dependencies;
4. Run yarn build to start Webpack module bundler;
5. Launch one live server to serve the app and open it in a browser.

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<kastor.code/>

chip-8-emulator-typescript's Issues

Some glitches in some ROMs

In Airplane.ch8 ROM, the first gameplay is normal:



But in the second, we have some glitches on the canvas:




The Addition Problems [Paul C. Moews].ch8 ROM does not work appositely:




Why? How to solve this?

Speed not good enough

The performance of the ROMs is not good enough.
Why? How to solve this?