Writing emulators, compilers, operating-systems, and codecs are all standard-skills of any low-level systems programmer. My entire team of 50+ people are capabl

Writing emulators, compilers, operating-systems, and codecs are all standard-skills of any low-level systems programmer. My entire team of 50+ people are capable of doing this stuff. The difference between us & Fabrice are: (1) we work for a major company & none of our stuff is publicly available; and, (2) he's still at least head-and-shoulders above most of the people doing this. He'd easily be in the top 5 for my team, and certainly better than of the kids under 40.