KOI-8

KOI-8 (КОИ-8) is an 8-bit character set standardized in GOST 19768-74.[1][2] It is an extension of KOI-7 which allows the use of the Latin alphabet along with the Russian alphabet, both the upper and lower case letters, however, the letter Ёё and the uppercase Ъ are missed, the latter to avoid conflicts with the delete character (both are added in most extensions, see KOI8-B). The first 127 code points are identical to ASCII with the exception of the dollar sign $ (code point 24hex) replaced by the universal currency sign ¤. The rows x8_ and x9_ (code points 128–159) might be filled with the additional control characters from EBCDIC (code points 32–63).

This article is about KOI-8, defined by GOST 19768-74. For the misnomered "KOI-8 N1" and "KOI-8 N2" encodings defined by GOST R 34.303-92, see Code page 866 § GOST R 34.303-92.
"GOST 19768" redirects here. For the later 1987 encoding sometimes cited as such, and also dubbed "KOI-8 V1" by GOST R 34.303-92, see ISO-IR-153.
KOI-8
Language(s)Russian (basic support)
StandardGOST 19768-74
ClassificationExtended ISO 646, KOI
ExtensionsKOI8-B (KOI8-R, KOI8-U, KOI8-RU, KOI8-T, ISO-IR-111, KOI8-F)
Transforms / EncodesISO 646:IRV (lower)
KOI-7 N1 (upper)
Preceded byKOI-7
Succeeded byST SEV 358-88 (ISO-IR-153)
Other related encoding(s)INIS Cyrillic

This standard has become the base for the later Internet standards such as KOI8-R, KOI8-U, KOI8-RU and all the other derivatives.

Character set

The following table shows the KOI-8 encoding. Each character is shown with its equivalent Unicode code point.

KOI-8[3]
_0 _1 _2 _3 _4 _5 _6 _7 _8 _9 _A _B _C _D _E _F
0_
0		 NUL
0000		 SOH
0001		 STX
0002		 ETX
0003		 EOT
0004		 ENQ
0005		 ACK
0006		 BEL
0007		 BS
0008		 HT
0009		 LF
000A		 VT
000B		 FF
000C		 CR
000D		 SO
000E		 SI
000F
1_
16		 DLE
0010		 DC1
0011		 DC2
0012		 DC3
0013		 DC4
0014		 NAK
0015		 SYN
0016		 ETB
0017		 CAN
0018		 EM
0019		 SUB
001A		 ESC
001B		 FS
001C		 GS
001D		 RS
001E		 US
001F
2_
32		 SP
0020		 !
0021		 "
0022		 #
0023		 ¤/$[lower-alpha 1]
00A4/0024		 %
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		 DEL
007F
8_
128
9_
144
A_
160
B_
176
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

  Letter   Number   Punctuation   Symbol   Other   Undefined

See also

Footnotes
  1. Originally given as an international currency sign to match the ISO 646 IRV, which has itself since been changed to match ASCII in giving it as a dollar sign. KOI-8 variants and extensions in use tend to match ASCII here, see for example RFC 2319.

References
  1. (in Russian) ГОСТ 19768-74 (СТ СЭВ 358-76). Машины вычислительные и система обработки данных. Коды 8-битные для обмена и обработки информации.
  2. (in Russian) Маркелова Л. Н. Эксплуатация программоуправляемой вычислительной машины «Искра 226». — М.: Машиностроение, 1987. — С. 41—42.
  3. "Locale::RecodeData::KOI_8 - search.cpan.org". search.cpan.org.
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