This is a simple emulator for the CHIP-8 that I am making for fun. Currently it initializes the CPU and RAM and then loads a ROM and starts executing from 0x200.
It has some memory that can be of variable size and memory reading and writing functions, and it also has all registers for the CPU and a reset function, along with the implementation of various opcodes.
Additionally, it has a virtual screen that scales to use the whole window.
This is early WIP for now.
While most of this emulator is coded by me, there are some parts that I have copied out of craigthomas' great (Super)CHIP-8 emulator, like the implementation of the DRW instruction.
To compile, you need CMake. Any compiler that CMake supports (pretty much every C/C++ compiler) will do.
While most of the code is written purely using the standard C library, Chip8Emu also requires SDL2, which is used for the graphics and input. Then, to compile:
mkdir build
cd build
cmake ..
make
Or to compile in debug mode with verbose output for what the CPU does:
mkdir build
cd build
cmake .. -DUSE_DEBUG=1
make
When running the emulator with no command line arguments, the emulator will exit.
When running it with a path to a ROM, the emulator load the ROM and it will then start executing it from virtual memory address 0x200.
If you run the emulator with the interactive command line
argument, a real-time interpreter will start where you can type
opcodes and the emulator will execute them