I created a renderer for the framebuffer. It simply loops over the framebuffer and renders the corresponding pixel using Swing. This allows me to write programs in machine code to make patterns like the one posted below.

I had to do some improvements before being able to do this however. I added a new instruction to load to a pointer stored in a register. The entire bytecode for the program used below is:
02 00 00 00 00 00 02 01 00 00 07 D0 03 00 03 11 01 7F 03 01 03 06 00 00 00 0B D0 08 0C