KOI8-R

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 KOI7. For example, "Русский Текст" in KOI8-R becomes rUSSKIJ tEKST ("Russian Text").

KOI8-R
Language(s)Russian, Bulgarian
Classification8-bit KOI, extended ASCII
ExtendsKOI8-B
Based onKOI-8
Other related encoding(s)KOI8-U, KOI8-RU

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, but has not been used for that purpose since CP1251 was accepted. The use of these older code pages is being replaced with Unicode as a more common way to represent Cyrillic together with other languages.

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]
_0 _1 _2 _3 _4 _5 _6 _7 _8 _9 _A _B _C _D _E _F
0_
0
1_
16
2_
32		 SP
0020		 !
0021		 "
0022		 #
0023		 $
0024		 %
0025		 &
0026		 '
0027		 (
0028		 )
0029		 *
002A		 +
002B		 ,
002C		 -
002D		 .
002E		 /
002F
3_
48		 0
0030		 1
0031		 2
0032		 3
0033		 4
0034		 5
0035		 6
0036		 7
0037		 8
0038		 9
0039		 :
003A		 ;
003B		 <
003C		 =
003D		 >
003E		 ?
003F
4_
64		 @
0040		 A
0041		 B
0042		 C
0043		 D
0044		 E
0045		 F
0046		 G
0047		 H
0048		 I
0049		 J
004A		 K
004B		 L
004C		 M
004D		 N
004E		 O
004F
5_
80		 P
0050		 Q
0051		 R
0052		 S
0053		 T
0054		 U
0055		 V
0056		 W
0057		 X
0058		 Y
0059		 Z
005A		 [
005B		 \
005C		 ]
005D		 ^
005E		 _
005F
6_
96		 `
0060		 a
0061		 b
0062		 c
0063		 d
0064		 e
0065		 f
0066		 g
0067		 h
0068		 i
0069		 j
006A		 k
006B		 l
006C		 m
006D		 n
006E		 o
006F
7_
112		 p
0070		 q
0071		 r
0072		 s
0073		 t
0074		 u
0075		 v
0076		 w
0077		 x
0078		 y
0079		 z
007A		 {
007B		 |
007C		 }
007D		 ~
007E
8_
128		 ─
2500		 │
2502		 ┌
250C		 ┐
2510		 └
2514		 ┘
2518		 ├
251C		 ┤
2524		 ┬
252C		 ┴
2534		 ┼
253C		 ▀
2580		 ▄
2584		 █
2588		 ▌
258C		 ▐
2590
9_
144		 ░
2591		 ▒
2592		 ▓
2593		 ⌠
2320		 ■
25A0		 ∙
2219		 √
221A		 ≈
2248		 ≤
2264		 ≥
2265		 NBSP
00A0		 ⌡
2321		 °
00B0		 ²
00B2		 ·
00B7		 ÷
00F7
A_
160		 ═
2550		 ║
2551		 ╒
2552		 ё
0451		 ╓
2553		 ╔
2554		 ╕
2555		 ╖
2556		 ╗
2557		 ╘
2558		 ╙
2559		 ╚
255A		 ╛
255B		 ╜
255C		 ╝
255D		 ╞
255E
B_
176		 ╟
255F		 ╠
2560		 ╡
2561		 Ё
0401		 ╢
2562		 ╣
2563		 ╤
2564		 ╥
2565		 ╦
2566		 ╧
2567		 ╨
2568		 ╩
2569		 ╪
256A		 ╫
256B		 ╬
256C		 ©
00A9
C_
192		 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
D_
208		 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
E_
224		 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
F_
240		 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

  Letter   Number   Punctuation   Symbol   Other   Undefined

See also

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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