Some stuff I created along the way. Feel free to download and use them for your personal pleasure. How about a cool MOS logo tee? Or, create your own browser demo and put a stylish Commodore 1984S monitor around it. Do it.
Commodore 64 memory map
The memory map of all available registers and their functionality is a mandatory reference for developing on the Commodore 64. This page should look alright on mobile devices too.
Here's something for the Atari fans: vector versions of the famous Atari SM124 and SC1224 monitors. The zip file contains a vector file, a Photoshop file with layers and png images to integrate with your browser demo.