At this week’s All Things Digital conference, Walt Mossberg emceed a joint interview with Steve Jobs and Bill Gates. The entire session is captured in seven videos at the site AllThingsD and begins with the two icons reminiscing about their companies’ origins. Specifically, the first video segment, from time indices 6:53 to 9:11, the contributions of Gates and Apple co-founder Stephen Wozniak to the Apple II’s various versions of BASIC are outlined.