CHIP-8

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A simple emulator for the CHIP-8 interpreted programming language.

CHIP-8 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# CHIP-8 Emulator

A simple emulator for the CHIP-8 interpreted programming language written in C (SDL for graphics).

## About

This is a really basic emulator written for educational purposes, the code is meant to be readable and clear, with a lot of comments. I am a beginner in this field and this is my first attempt to emulators. I have implemented this project mainly by following the [Wikipedia page](https://en.wikipedia.org/wiki/CHIP-8) and [this](http://devernay.free.fr/hacks/chip8/C8TECH10.HTM#0.1) awesome resource; I had no experience with SDL either so I have helped myself during that process with various resources online. **The most important part to me was understanding the architecture itself, not the graphics**.

## Requirements

This project has been developed under a Linux system.

-   SDL library
-   C compiler

## Run

`make`

`./bin/emulator.out <game_rom_path>`

Or you could use the `test_emu` script I wrote to automate the process of testing the program.

`./test_emu.sh`

## Quick Walkthrough

By reading [here](http://devernay.free.fr/hacks/chip8/C8TECH10.HTM#0.1):

```
Chip-8 is a simple, interpreted, programming language which was first used
on some do-it-yourself computer systems in the late 1970s and early 1980s.
The COSMAC VIP, DREAM 6800, and ETI 660 computers are a few examples.
These computers typically were designed to use a television as a display
had between 1 and 4K of RAM, and used a 16-key hexadecimal keypad for input.
The interpreter took up only 512 bytes of memory, and programs, which were entered into the computer in hexadecimal, were even smaller
```

So this emulator replicates this behaviour by creating a virtual machine with the following specs:

-   4096 Bytes of memory
-   16 general 8-bit purpose registers
-   A special 16-bit register
-   ProgramCounter and StackPointer pseudo registers
-   The stack (array of 16 16-bit values)
-   The keypad (adapted to modern keyboards)
-   64x32 pixels monochrome screen
-   Delay timer
-   Sound timer

The emulator is then able to run `.ch8` games. Please note that I have written only the emulator itself, not the games (freely accessible on the Internet).

The emulator logic consits of parsing and executing the instructions coming from those games.

![scr_1](https://raw.githubusercontent.com/f0lg0/CHIP-8/main/assets/chip8_1.png)

The default mode is `debug` mode, which outputs a lot of stuff to the screen, if you want to disable it you have to set the `int DEBUG = 1;` variable to `0` in `chip8.c`.

## Improvements

-   Sound support
    -   I was lazy and focused more on the interpreter so there's no sound here
-   Use [function pointers](http://www.multigesture.net/wp-content/uploads/mirror/zenogais/FunctionPointers.htm) instead of big switch statements.

## References

-   [Wikipedia](https://en.wikipedia.org/wiki/CHIP-8)
-   [Cowgod's Chip-8 Technical Reference v1.0](http://devernay.free.fr/hacks/chip8/C8TECH10.HTM#0.1)

Another good article

-   [How to write an emulator chip8 interpreter](http://www.multigesture.net/articles/how-to-write-an-emulator-chip-8-interpreter/)

Improvements

-   [Function pointers](http://www.multigesture.net/wp-content/uploads/mirror/zenogais/FunctionPointers.htm)

CHIP-8

CHIP-8 최신버젼 다운로드

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CHIP-8

CHIP-8 최신버젼 다운로드

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