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File:FD1771 FDC Datasheet.jpg

From Wikipedia, the free encyclopedia


Description Western Digital FD1771 floppy disk controller datasheet. (Cover of a 20 page booklet.) The FD1771 was introduced in July 1976 at about the same time as Shugart SA-400 5.25 inch Mini Floppy drive. These two products reduced the cost of a personal computer floppy disk system from $2000 to $700. Western Digital followed the FD1771 with a series of improved controllers with additional features.
Source Scanned from the data sheet by User:Swtpc6800 Michael Holley in March 2010
Author Western Digital Corp.
(Reusing this file)
This document did not have a copyright notice and is in the public domain. Eight other Western Digital datasheets and application notes from the time period also did not have a copyright notice. The online records at the Copyright office shows that Western Digital only registered copyrights on schematics and integrated circuit layouts.


Public domain
This work is in the public domain because it was published in the United States between 1978 and March 1, 1989 without a copyright notice, and its copyright was not subsequently registered with the U.S. Copyright Office within 5 years. Unless its author has been dead for several years, it is copyrighted in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada (50 pma), Mainland China (50 pma, not Hong Kong or Macau), Germany (70 pma), Mexico (100 pma), Switzerland (70 pma), and other countries with individual treaties. See this page for further explanation.

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April 1979

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