KOI8-R

Last updated
KOI8-R
Alias(es)cp878 (code page 878)
Language(s) Russian, Bulgarian
Classification8-bit KOI, extended ASCII
Extends KOI8-B
Based on KOI-8
Other related encoding(s) KOI8-U, KOI8-RU

KOI8-R (RFC 1489) is an 8-bit character encoding, derived from the KOI-8 encoding by the programmer Andrei Chernov in 1993 and designed to cover Russian, which uses a Cyrillic alphabet. KOI8-R was based on Russian Morse code, which was created from a phonetic version of Latin Morse code. As a result, Russian Cyrillic letters are in pseudo-Roman order rather than the normal Cyrillic alphabetical order. Although this may seem unnatural, if the 8th bit is stripped, the text is partially readable in ASCII and may convert to syntactically correct KOI-7. For example, "Код Обмена Информацией" in KOI8-R becomes kOD oBMENA iNFORMACIEJ (the Russian meaning of the "KOI" acronym).

Contents

KOI8 stands for Kod Obmena Informatsiey, 8 bit (Russian : Код Обмена Информацией, 8 бит) which means "Code for Information Exchange, 8 bit". In Microsoft Windows, KOI8-R is assigned the code page number 20866. In IBM, KOI8-R is assigned code page 878. [1] [2] KOI8-R also happens to cover Bulgarian.

It lacks proper quotation marks for these languages: both «...» and the Bulgarian „...“. Windows-1251 does support these, as well as more letters, and has thus become more popular. KOI8-R is used by less than 0.004% of websites, mostly Russian and Bulgarian.[ citation needed ] Unicode and UTF-8 is preferred to single-byte Cyrillic encodings in modern applications, Unicode contains 436 Cyrillic letters including for Old Cyrillic.

Character set

The following table shows the KOI8-R encoding. Each character is shown with its equivalent Unicode code point.

KOI8-R [3] [4] [5] [6]
0123456789ABCDEF
0x
1x
2x  SP   ! " # $ % & ' ( ) * + , - . /
3x 0 1 2 3 4 5 6 7 8 9 : ; < = > ?
4x @ A B C D E F G H I J K L M N O
5x P Q R S T U V W X Y Z [ \ ] ^ _
6x ` a b c d e f g h i j k l m n o
7x p q r s t u v w x y z { | } ~
8x─
2500		│
2502		┌
250C		┐
2510		└
2514		┘
2518		├
251C		┤
2524		┬
252C		┴
2534		┼
253C		▀
2580		▄
2584		█
2588		▌
258C		▐
2590
9x░
2591		▒
2592		▓
2593		⌠
2320		■
25A0		∙
2219		√
221A		≈
2248		≤
2264		≥
2265		 NBSP ⌡
2321		 °
00B0		 ²
00B2		 ·
00B7		 ÷
00F7
Ax═
2550		║
2551		╒
2552		 ё
0451		╓
2553		╔
2554		╕
2555		╖
2556		╗
2557		╘
2558		╙
2559		╚
255A		╛
255B		╜
255C		╝
255D		╞
255E
Bx╟
255F		╠
2560		╡
2561		 Ё
0401		╢
2562		╣
2563		╤
2564		╥
2565		╦
2566		╧
2567		╨
2568		╩
2569		╪
256A		╫
256B		╬
256C		 ©
00A9
Cx ю
044E		 а
0430		 б
0431		 ц
0446		 д
0434		 е
0435		 ф
0444		 г
0433		 х
0445		 и
0438		 й
0439		 к
043A		 л
043B		 м
043C		 н
043D		 о
043E
Dx п
043F		 я
044F		 р
0440		 с
0441		 т
0442		 у
0443		 ж
0436		 в
0432		 ь
044C		 ы
044B		 з
0437		 ш
0448		 э
044D		 щ
0449		 ч
0447		 ъ
044A
Ex Ю
042E		 А
0410		 Б
0411		 Ц
0426		 Д
0414		 Е
0415		 Ф
0424		 Г
0413		 Х
0425		 И
0418		 Й
0419		 К
041A		 Л
041B		 М
041C		 Н
041D		 О
041E
Fx П
041F		 Я
042F		 Р
0420		 С
0421		 Т
0422		 У
0423		 Ж
0416		 В
0412		 Ь
042C		 Ы
042B		 З
0417		 Ш
0428		 Э
042D		 Щ
0429		 Ч
0427		 Ъ
042A

See also

Related Research Articles

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ISO/IEC 646 is a set of ISO/IEC standards, described as Information technology — ISO 7-bit coded character set for information interchange, and developed in cooperation with ASCII at least since 1964. Since its first edition in 1967 it has specified a 7-bit character code from which several national standards are derived.

ISO/IEC 8859-5:1999, Information technology — 8-bit single-byte coded graphic character sets — Part 5: Latin/Cyrillic alphabet, is part of the ISO/IEC 8859 series of ASCII-based standard character encodings, first edition published in 1988. It is informally referred to as Latin/Cyrillic.

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KOI8-U is an 8-bit character encoding, designed to cover Ukrainian, which uses a Cyrillic alphabet. It is based on KOI8-R, which covers Russian and Bulgarian, but replaces eight box drawing characters with four Ukrainian letters Ґ, Є, І, and Ї in both upper case and lower case.

Windows-1251 is an 8-bit character encoding, designed to cover languages that use the Cyrillic script such as Russian, Ukrainian, Belarusian, Bulgarian, Serbian Cyrillic, Macedonian and other languages.

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<span class="mw-page-title-main">Code page 866</span> Computer character set for Russian

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<span class="mw-page-title-main">Code page 950</span> Windows character set for Traditional Chinese

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KOI8-RU is an 8-bit character encoding, designed to cover Russian, Ukrainian, and Belarusian which use a Cyrillic alphabet. It is closely related to KOI8-R, which covers Russian and Bulgarian, but replaces ten box drawing characters with five Ukrainian and Belarusian letters Ґ, Є, І, Ї, and Ў in both upper case and lower case. It is even more closely related to KOI8-U, which does not include Ў but otherwise makes the same letter replacements. The additional letter allocations are matched by KOI8-E, except for Ґ which is added to KOI8-F.

KOI8-F or KOI8 Unified is an 8-bit character set. It was designed by Peter Cassetta of Fingertip Software as an attempt to support all the encoded letters from both KOI8-E (ISO-IR-111) and KOI8-RU, along with some of the pseudographics from KOI8-R, with some additional punctuation in the remaining space, sourced partly from Windows-1251. This encoding was only used in the software of that company. FreeDOS calls it code page 60270.

Code page 896, called Japan 7-Bit Katakana Extended, is IBM's code page for code-set G2 of EUC-JP, a 7-bit code page representing the Kana set of JIS X 0201 and accompanying Code page 895 which corresponds to the lower half of that standard. It encodes half-width katakana.

ISO-IR-111 or KOI8-E is an 8-bit character set. It is a multinational extension of KOI-8 for Belarusian, Macedonian, Serbian, and Ukrainian. The name "ISO-IR-111" refers to its registration number in the ISO-IR registry, and denotes it as a set usable with ISO/IEC 2022.

References

  1. ↑ "SBCS code page information - CPGID: 00878 / Name: Russian internet koi8-r". IBM Software: Globalization: Coded character sets and related resources: Code pages by CPGID: Code page identifiers. IBM. C-H 3-3220-050. Archived from the original on 2017-02-18. Retrieved 2017-02-18.
  2. ↑ "CCSID information document; CCSID 878; KOI8-R CYRILLIC". IBM . Retrieved 2017-02-18.
  3. ↑ Richter, Helmut (2016-01-04) [1999-08-18]. "KOI8-R.TXT". 2.0. Retrieved 2016-12-09.
  4. ↑ Code Page CPGID 00878 (pdf) (PDF), IBM
  5. ↑ Code Page CPGID 00878 (txt), IBM
  6. ↑ International Components for Unicode (ICU), ibm-878_P100-1996.ucm, 2002-12-03

Further reading

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