An emulator for the Intel x64 processor written in C#

NOTE: This is an old project of mine that is no longer maintained. I recently uploaded it to GitHub for the purpose of showing it to people who may be interested.

This project was a labor-of-love experiment of mine that I started in 2012 and only worked on at night over the course of a couple weeks. Over the previous years (and still to this day) I'd had a fascination with operating systems development, so this time I thought I'd take a crack at writing low-level software from a different angle, so to speak, by creating a program that's able to read and interpret x64 machine code. All the while utilizing the nice OOP features that C# has to offer. Unfortunately, it never reached 64-bit capabilities. It's currently a basic 16-bit x86 emulator. It has enough coverage of the x86 instruction set to execute machine code containing decision-making and branching constructs, as well as data storage and retrieval operations.

NOTE: This project must be run without debugging (CTRL+F5) due to the Visual Studio debugger complaining about non-GUI threads accessing the form controls.

• Load the solution in Visual Studio (originally written with VS 2010, but I've tested in VS 2015)
• Build the project, in "release" mode
• Copy bootsect.bin into the Rx64\bin\release directory
• Execute Rx64\bin\release\Rx64.exe

If you're feeling especially adventurous, you can write x86 assembly code to target this platform. You can find the list of implemented instructions by examining the Rx64\VirtualMachine\CPU\Instructions directory. Keep in mind that some code files may not have code yet... So to be extra-sure that an instruction is implemented, open the corresponding code file. Once you've written your program, it must be assembled as a flat binary file. Similar to a PC, your bootsect.bin will be loaded into memory at address 0x7c00. Also similar to a PC, text-mode video memory starts at memory address 0xb8000 (0xb800:0x0000 in 16-bit segmented notation).