Erratum#CPU logic

{{Use dmy dates|date=October 2023}}

{{Short description|Correction of a published text}}

File:Jules César t.2 - p.585 - Erratum.jpg

An erratum or corrigendum ({{plural form}}: errata, corrigenda) (comes from {{langx|la|errata corrige}}) is a correction of a published text. Generally, publishers issue an erratum for a production error (i.e., an error introduced during the publishing process) and a corrigendum for an author's error.{{cite web|url=http://www.nature.com/authors/policies/corrections.html|title=Authors and referees — corrections|access-date=10 February 2017|publisher=Nature publishing group|archive-url=https://web.archive.org/web/20160801122211/http://www.nature.com/authors/policies/corrections.html|archive-date=1 August 2016}} It is usually bound into the back of a book, but for a single error a slip of paper detailing a corrigendum may be bound in before or after the page on which the error appears.Collins Dictionary of the English Language, 2nd edition, London, 1986, p. 352. An erratum may also be issued shortly after its original text is published.

Etymology

Corrigendum is the gerundive form of the Latin compound verb corrigo -rexi -rectum (from the verb rego, "to make straight, rule", plus the preposition cum, "with"), "to correct",Cassell's Latin Dictionary, Marchant, J.R.V, & Charles, Joseph F., (Eds.), Revised Edition, 1928, p.139 and thus signifiesassuming the full form has added to it the verb sum or parts thereof, changing the meaning to the idea of necessity or compulsion "(those things) which must be corrected" and in its single form Corrigendum it means "(that thing) which must be corrected"."That which is to be corrected; An error to be corrected", per: Collins Dictionary of the English Language, 2nd Edition, London, 1986, p.352

Errata sheets

According to the Chicago Manual of Style, "Errata, lists of errors and their corrections, may take the form of loose, inserted sheets or bound-in pages. An errata sheet is definitely not a usual part of a book. It should never be supplied to correct simple typographical errors (which may be rectified in a later printing) or to insert additions to, or revisions of, the printed text (which should wait for the next edition of the book). It is a device to be used only in extreme cases where errors severe enough to cause misunderstanding are detected too late to correct in the normal way but before the finished book is distributed. Then the errors may be listed with their locations and their corrections on a sheet that is tipped in, either before or after the book is bound, or laid in loose, usually inside the front cover of the book. (Tipping and inserting must be done by hand, thus adding considerably to the cost of the book.)"[http://writerservices.net/errata_sheet.php The Chicago Manual of Style] {{Webarchive|url=https://web.archive.org/web/20160321193116/http://writerservices.net/errata_sheet.php |date=21 March 2016 }}. The University of Chicago Press, 14th Edition 1993, ISBN (cloth) 0-226-10389-7, p. 42, section 1.107.

Errata associated with integrated circuits

Design errors and mistakes in a microprocessor's hardwired logic may also be documented and described as errata. One well-publicized example is Intel's "FDIV" erratum in early Pentium processors,{{cite web

|url=http://support.intel.com/support/processors/pentium/fdiv/

|title=FDIV Replacement Program

|access-date=10 February 2010

|publisher=Intel

|archive-url=https://web.archive.org/web/20010429062848/http://support.intel.com/support/processors/pentium/fdiv/

|archive-date=29 April 2001}} known as the Pentium FDIV bug. This gave incorrect answers to a floating-point division instruction (FDIV) for a small set of numbers, due to an incorrect lookup table inside the Pentium chip.

Similarly, design errors in peripheral devices, such as disk controllers and video display units, can result in abnormal operation under certain conditions.

See also

References

{{Reflist}}