Michael Steil explains the XBOX security system. An excellent description of the obstacles Microsoft was up against, the ways they failed, and a good demonstration about why a) security is hard, and b) PC hardware is a bitch.
I sent this to Udo, and his comment was
SUPER SUPER COOL. A20# Gate. When we were young. Although the hardware hack is really cooler, but the software-hack is more straight-forward. Funny, funny.
I knew he’d get a kick out of it. The A20# hack is just such a wonderful relic from crazy times.