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Idaho State University

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Flap
  • vt. To unload a DECtape (so it goes flap, flap, flap. ). Old-time hackers at MIT tell of the days when the disk was device 0 and microtapes were 1, 2,. and attempting to flap device 0 would instead start a motor banging inside a cabinet near the disk.
  • By extension, to unload any magnetic tape. See also macrotape. Modern cartridge tapes no longer actually flap, but the usage has remained. (The term could well be re-applied to DEC's TK50 cartridge tape drive, a spectacularly misengineered contraption which makes a loud flapping sound, almost like an old reel-type lawnmower, in one of its many tape-eating failure modes. )