has abstract
| - The XF551 was the last floppy disk drive produced by Atari for the 8-bit series home computers. It was the first drive from the company that officially supported double-density, adding double-sided support, providing 360 kB of storage per disk. It also introduced a faster transfer speed when used in double-density mode, doubling performance. It was packaged in the new gray-colored design language of the XE series computers. Although an XE-styled drive was shown several times during 1985 and 1986, production waited while leftover inventories of the Atari 1050 were sold off. By the time these ran out late in 1986, interest in the 8-bit line had waned and a new model was not put into production. At the same time, the success of the Nintendo Entertainment System (NES) prompted Atari to repackage their 65XE as the Atari XEGS games console, boasting it could be expanded to a complete computer with the addition of a keyboard and disk drive. Nintendo sued, noting that Atari had no disk drives to sell, forcing Atari to rush the drive to market in June 1987 even though the software was not ready. The XF551 is generally considered the best of Atari's drive offerings; not only did it store three times as much data as the 1050, it was also twice as fast and almost silent in operation. Its release was marred by packaging it with an old version of Atari DOS, which did not support any of these new features. When this was finally addressed with the release of DOS XE a year later, the product went on to have a short but successful time in the market. Support was dropped, along with the entire 8-bit line, in 1992. (en)
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