KOI-8

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KOI-8
Language(s) Russian
Standard GOST 19768-74
Classification Extended ISO 646, KOI
Extensions KOI8-R, KOI8-U, KOI8-RU, KOI8-B, KOI8-T, ISO-IR-111, KOI8-F
Transforms / Encodes ISO 646:IRV (lower)
KOI-7 N1 (upper)
Preceded by KOI-7
Succeeded by ST SEV 358-88 (ISO-IR-153)

KOI-8 (КОИ-8) is a 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. 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 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[edit]

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

KOI-8[3]
_0 _1 _2 _3 _4 _5 _6 _7 _8 _9 _A _B _C _D _E _F
0_ NUL
0000
0
SOH
0001
1
STX
0002
2
ETX
0003
3
EOT
0004
4
ENQ
0005
5
ACK
0006
6
BEL
0007
7
BS
0008
8
HT
0009
9
LF
000A
10
VT
000B
11
FF
000C
12
CR
000D
13
SO
000E
14
SI
000F
15
1_ DLE
0010
16
DC1
0011
17
DC2
0012
18
DC3
0013
19
DC4
0014
20
NAK
0015
21
SYN
0016
22
ETB
0017
23
CAN
0018
24
EM
0019
25
SUB
001A
26
ESC
001B
27
FS
001C
28
GS
001D
29
RS
001E
30
US
001F
31
2_ SP
0020
32
!
0021
33
"
0022
34
#
0023
35
¤
00A4
36
%
0025
37
&
0026
38
'
0027
39
(
0028
40
)
0029
41
*
002A
42
+
002B
43
,
002C
44
-
002D
45
.
002E
46
/
002F
47
3_ 0
0030
48
1
0031
49
2
0032
50
3
0033
51
4
0034
52
5
0035
53
6
0036
54
7
0037
55
8
0038
56
9
0039
57
:
003A
58
;
003B
59
<
003C
60
=
003D
61
>
003E
62
?
003F
63
4_ @
0040
64
A
0041
65
B
0042
66
C
0043
67
D
0044
68
E
0045
69
F
0046
70
G
0047
71
H
0048
72
I
0049
73
J
004A
74
K
004B
75
L
004C
76
M
004D
77
N
004E
78
O
004F
79
5_ P
0050
80
Q
0051
81
R
0052
82
S
0053
83
T
0054
84
U
0055
85
V
0056
86
W
0057
87
X
0058
88
Y
0059
89
Z
005A
90
[
005B
91
\
005C
92
]
005D
93
^
005E
94
_
005F
95
6_ `
0060
96
a
0061
97
b
0062
98
c
0063
99
d
0064
100
e
0065
101
f
0066
102
g
0067
103
h
0068
104
i
0069
105
j
006A
106
k
006B
107
l
006C
108
m
006D
109
n
006E
110
o
006F
111
7_ p
0070
112
q
0071
113
r
0072
114
s
0073
115
t
0074
116
u
0075
117
v
0076
118
w
0077
119
x
0078
120
y
0079
121
z
007A
122
{
007B
123
|
007C
124
}
007D
125
~
007E
126
DEL
007F
127
8_
9_
A_
B_
C_ ю
044E
192
а
0430
193
б
0431
194
ц
0446
195
д
0434
196
е
0435
197
ф
0444
198
г
0433
199
х
0445
200
и
0438
201
й
0439
202
к
043A
203
л
043B
204
м
043C
205
н
043D
206
о
043E
207
D_ п
043F
208
я
044F
209
р
0440
210
с
0441
211
т
0442
212
у
0443
213
ж
0436
214
в
0432
215
ь
044C
216
ы
044B
217
з
0437
218
ш
0448
219
э
044D
220
щ
0449
221
ч
0447
222
ъ
044A
223
E_ Ю
042E
224
А
0410
225
Б
0411
226
Ц
0426
227
Д
0414
228
Е
0415
229
Ф
0424
230
Г
0413
231
Х
0425
232
И
0418
233
Й
0419
234
К
041A
235
Л
041B
236
М
041C
237
Н
041D
238
О
041E
239
F_ П
041F
240
Я
042F
241
Р
0420
242
С
0421
243
Т
0422
244
У
0423
245
Ж
0416
246
В
0412
247
Ь
042C
248
Ы
042B
249
З
0417
250
Ш
0428
251
Э
042D
252
Щ
0429
253
Ч
0427
254
_0 _1 _2 _3 _4 _5 _6 _7 _8 _9 _A _B _C _D _E _F

See also[edit]

References[edit]

  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.