I love this! Would've been nice to have something like this when I was learning assembly the first time. After learning to develop with eclipse, sublime text, chrome debugger, etc, using something like QTSpim for assembly just fired off signals in my brain saying 'this is outdated, assembly is probably not what you want to learn'. But of course assembly is important to anyone who wants intimate knowledge of what's going on inside of the CPU when you run your programs. Great idea to put a modern, beautiful interface on top of it!