Pettit and his colleague Paul Strefling, sitting in the pilot’s seat between us, are engineers in the business of ride quality. Their job is to program the movable parts on an airplane’s tail and wings—the rudder, elevators, and nearly two dozen ailerons, flaperons, and spoilers—to smooth out its flight automatically when turbulence hits. To get data for the simulator, their team takes full-size Boeing jets on research flights over the Rocky Mountains. They hunt for rough air, then loop through it again and again, like race-car drivers on a test track. They record every flutter and quake using the plane’s sensors, then download them to the simulator’s computers. The flight deck we were in could be swapped with one from a 737 or a 787, and the turbulence reprogrammed for the size and shape of those planes. Then, with the flip of a switch in the control room next door, the cab would start to shake and roll on its piston legs, as if having a seizure.
typing. The situation was substantially improved by the introduction of
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Lillard also talked about how he and Ulrich appreciate the fan theories that Stu and Billy were in love, and defends fans' rights to make these movies their own. Plus, to kick things off, he shares a ghost story that quite literally hits close to home.
The DOS memory management was probably written sometime around summer 1982, and it meshed with the newly added process management functions (EXEC/EXIT/WAIT)—allocated memory is owned by the current process, and gets freed when that process terminates. Note that some versions of the memory manager source code (ALLOC.ASM) include a comment that says ‘Created: ARR 30 March 1983’. That cannot possibly be true because by the end of March 1983, PC DOS 2.0 was already released, and included the memory management support. The DOS 2.0 memory management functions were already documented in the PC DOS 2.0 manual dated January 1983.