Hi everyone! I wrote a simulation of a cool retro computer, called the Toy CPU. You use the "front panel" to enter your program as binary opcodes, using a "switches and lights" model. Check out my GitHub project for a full list of the opcodes (there's a cheat sheet "taped" to the front display of the Toy). My GitHub also has several sample programs you can enter into the Toy. Educational and fun!

This is actually an update to an older prototype, but it's completely rewritten from scratch to run as a DOS program in graphical mode.