A simple monochrome Gameboy Classic/Pocket emulator for Windows written in C using the SDL2 library and Visual Studio 2017. The emulator is in very early stages. There is currently no sound, no save files, and display is a little glitchy.
You will need a Gameboy ROM image to use with the emulator. The emulator can run a number of commercial games, such as Donkey Kong and Legend of Zelda: Link's Awakening.
Controls are hard-coded for now:
A button = F
B button = D
Select button = Space
Start button = Enter
D-Pad = Arrow keys
Some images of the emulator: