Currently this is an emulator for the 6502 cpu, written in C using X11. The aim of this project is to create a nes emulator with a modular core design, in order to allow us to branch out into emulating other 6502 based machines (eg commodore 64, atari 6000).
Core 6502 emulation is complete except for a few nich features like decimal mode (which is disabled on the nes). Currently, we are correctly able to emulate the machine described at easy 6502, including the snake clone.
This project requires a C compiler and the X11 libraries. The project is built by a makefile, so you can enter the projects folder and enter: 'make gui'
This will create an exectuable named gui, which can be run like so: './gui binary/snake.bin'
There are a few test programs in 'binary', which are mainly taken from easy 6502. The most interesting on is, by far, snake.bin (use wasd to move).
I use the assembler at easy 6502, though this ouputs hex, whereas my emulator runs on binary files. The solution is to remove spaces from the output and convert it to binary (ie. using xxd -r -p on linux).
* [wiki.nesdev.com](wiki.nesdev.com) - general nes info
* [http://obelisk.me.uk/6502/reference.html](http://obelisk.me.uk/6502/reference.html) - 6502 instruction set
* [easy 6502](http://skilldrick.github.io/easy6502/) - 6502 tutorial, assembler and debugger.