Network Working Group                                         A. Chernov
Request for Comments: 1489                       RELCOM Development Team
                                                               July 1993


                Registration of a Cyrillic Character Set

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard.  Distribution of this memo is
   unlimited.

Introduction

   Though the proposed character set "koi8-r" is not currently an
   international standard, there is very large user community (including
   Relcom Net) supporting it.  Factually, "koi8-r" is de-facto standard
   for Unix and global network applications in the former Soviet Union.
   This is the reason the Society of Unix User Groups (SUUG) believes
   "koi8-r" should be registered.

   MIME character set name: koi8-r

   Published specification: This standard is unpublished, but based on
   several published standards: GOST 19768-74 (old-koi8), ISO 6937/8
   (not registered) and variations: INIS-cyrillic, ISO 5427.

C language coding table from koi8-r to Unicode (ISO 10646) for the
upper half of the code table (the lower half of the table is fully
coinciding with ASCII character set)

   unsigned short koi82unicode[128] = {
     0x2500,0x2502,0x250c,0x2510,0x2514,0x2518,0x251c,0x2524,
     0x252c,0x2534,0x253c,0x2580,0x2584,0x2588,0x258c,0x2590,
     0x2591,0x2592,0x2593,0x2320,0x25a0,0x2219,0x221a,0x2248,
     0x2264,0x2265,0x00a0,0x2321,0x00b0,0x00b2,0x00b7,0x00f7,
     0x2550,0x2551,0x2552,0x0451,0x2553,0x2554,0x2555,0x2556,
     0x2557,0x2558,0x2559,0x255a,0x255b,0x255c,0x255d,0x255e,
     0x255f,0x2560,0x2561,0x0401,0x2562,0x2563,0x2564,0x2565,
     0x2566,0x2567,0x2568,0x2569,0x256a,0x256b,0x256c,0x00a9,
     0x044e,0x0430,0x0431,0x0446,0x0434,0x0435,0x0444,0x0433,
     0x0445,0x0438,0x0439,0x043a,0x043b,0x043c,0x043d,0x043e,
     0x043f,0x044f,0x0440,0x0441,0x0442,0x0443,0x0436,0x0432,
     0x044c,0x044b,0x0437,0x0448,0x044d,0x0449,0x0447,0x044a,
     0x042e,0x0410,0x0411,0x0426,0x0414,0x0415,0x0424,0x0413,
     0x0425,0x0418,0x0419,0x041a,0x041b,0x041c,0x041d,0x041e,
     0x041f,0x042f,0x0420,0x0421,0x0422,0x0423,0x0416,0x0412,

     0x042c,0x042b,0x0417,0x0428,0x042d,0x0429,0x0427,0x042a
   };

   ---------------------------------------------------------------------

   The description of all characters from the upper half of the table
   in compliance with ISO 10646 (Unicode)

   <hex-code>  <description>

   80  FORMS LIGHT HORIZONTAL
   81  FORMS LIGHT VERTICAL
   82  FORMS LIGHT DOWN AND RIGHT
   83  FORMS LIGHT DOWN AND LEFT
   84  FORMS LIGHT UP AND RIGHT
   85  FORMS LIGHT UP AND LEFT
   86  FORMS LIGHT VERTICAL AND RIGHT
   87  FORMS LIGHT VERTICAL AND LEFT
   88  FORMS LIGHT DOWN AND HORIZONTAL
   89  FORMS LIGHT UP AND HORIZONTAL
   8A  FORMS LIGHT VERTICAL AND HORIZONTAL
   8B  UPPER HALF BLOCK
   8C  LOWER HALF BLOCK
   8D  FULL BLOCK
   8E  LEFT HALF BLOCK
   8F  RIGHT HALF BLOCK
   90  LIGHT SHADE
   91  MEDIUM SHADE
   92  DARK SHADE
   93  TOP HALF INTEGRAL
   94  BLACK SMALL SQUARE
   95  BULLET OPERATOR
   96  SQUARE ROOT
   97  ALMOST EQUAL TO
   98  LESS THAN OR EQUAL TO
   99  GREATER THAN OR EQUAL TO
   9A  NON-BREAKING SPACE
   9B  BOTTOM HALF INTEGRAL
   9C  DEGREE SIGN
   9D  SUPERSCRIPT DIGIT TWO
   9E  MIDDLE DOT
   9F  DIVISION SIGN
   A0  FORMS DOUBLE HORIZONTAL
   A1  FORMS DOUBLE VERTICAL
   A2  FORMS DOWN SINGLE AND RIGHT DOUBLE
   A3  CYRILLIC SMALL LETTER IO
   A4  FORMS DOWN DOUBLE AND RIGHT SINGLE
   A5  FORMS DOUBLE DOWN AND RIGHT

   A6  FORMS DOWN SINGLE AND LEFT DOUBLE
   A7  FORMS DOWN DOUBLE AND LEFT SINGLE
   A8  FORMS DOUBLE DOWN AND LEFT
   A9  FORMS UP SINGLE AND RIGHT DOUBLE
   AA  FORMS UP DOUBLE AND RIGHT SINGLE
   AB  FORMS DOUBLE UP AND RIGHT
   AC  FORMS UP SINGLE AND LEFT DOUBLE
   AD  FORMS UP DOUBLE AND LEFT SINGLE
   AE  FORMS DOUBLE UP AND LEFT
   AF  FORMS VERTICAL SINGLE AND RIGHT DOUBLE
   B0  FORMS VERTICAL DOUBLE AND RIGHT SINGLE
   B1  FORMS DOUBLE VERTICAL AND RIGHT
   B2  FORMS VERTICAL SINGLE AND LEFT DOUBLE
   B3  CYRILLIC CAPITAL LETTER IO
   B4  FORMS VERTICAL DOUBLE AND LEFT SINGLE
   B5  FORMS DOUBLE VERTICAL AND LEFT
   B6  FORMS DOWN SINGLE AND HORIZONTAL DOUBLE
   B7  FORMS DOWN DOUBLE AND HORIZONTAL SINGLE
   B8  FORMS DOUBLE DOWN AND HORIZONTAL
   B9  FORMS UP SINGLE AND HORIZONTAL DOUBLE
   BA  FORMS UP DOUBLE AND HORIZONTAL SINGLE
   BB  FORMS DOUBLE UP AND HORIZONTAL
   BC  FORMS VERTICAL SINGLE AND HORIZONTAL DOUBLE
   BD  FORMS VERTICAL DOUBLE AND HORIZONTAL SINGLE
   BE  FORMS DOUBLE VERTICAL AND HORIZONTAL
   BF  COPYRIGHT SIGN
   C0  CYRILLIC SMALL LETTER IU
   C1  CYRILLIC SMALL LETTER A
   C2  CYRILLIC SMALL LETTER BE
   C3  CYRILLIC SMALL LETTER TSE
   C4  CYRILLIC SMALL LETTER DE
   C5  CYRILLIC SMALL LETTER IE
   C6  CYRILLIC SMALL LETTER EF
   C7  CYRILLIC SMALL LETTER GE
   C8  CYRILLIC SMALL LETTER KHA
   C9  CYRILLIC SMALL LETTER II
   CA  CYRILLIC SMALL LETTER SHORT II
   CB  CYRILLIC SMALL LETTER KA
   CC  CYRILLIC SMALL LETTER EL
   CD  CYRILLIC SMALL LETTER EM
   CE  CYRILLIC SMALL LETTER EN
   CF  CYRILLIC SMALL LETTER O
   D0  CYRILLIC SMALL LETTER PE
   D1  CYRILLIC SMALL LETTER IA
   D2  CYRILLIC SMALL LETTER ER
   D3  CYRILLIC SMALL LETTER ES
   D4  CYRILLIC SMALL LETTER TE
   D5  CYRILLIC SMALL LETTER U

   D6  CYRILLIC SMALL LETTER ZHE
   D7  CYRILLIC SMALL LETTER VE
   D8  CYRILLIC SMALL LETTER SOFT SIGN
   D9  CYRILLIC SMALL LETTER YERI
   DA  CYRILLIC SMALL LETTER ZE
   DB  CYRILLIC SMALL LETTER SHA
   DC  CYRILLIC SMALL LETTER REVERSED E
   DD  CYRILLIC SMALL LETTER SHCHA
   DE  CYRILLIC SMALL LETTER CHE
   DF  CYRILLIC SMALL LETTER HARD SIGN
   E0  CYRILLIC CAPITAL LETTER IU
   E1  CYRILLIC CAPITAL LETTER A
   E2  CYRILLIC CAPITAL LETTER BE
   E3  CYRILLIC CAPITAL LETTER TSE
   E4  CYRILLIC CAPITAL LETTER DE
   E5  CYRILLIC CAPITAL LETTER IE
   E6  CYRILLIC CAPITAL LETTER EF
   E7  CYRILLIC CAPITAL LETTER GE
   E8  CYRILLIC CAPITAL LETTER KHA
   E9  CYRILLIC CAPITAL LETTER II
   EA  CYRILLIC CAPITAL LETTER SHORT II
   EB  CYRILLIC CAPITAL LETTER KA
   EC  CYRILLIC CAPITAL LETTER EL
   ED  CYRILLIC CAPITAL LETTER EM
   EE  CYRILLIC CAPITAL LETTER EN
   EF  CYRILLIC CAPITAL LETTER O
   F0  CYRILLIC CAPITAL LETTER PE
   F1  CYRILLIC CAPITAL LETTER IA
   F2  CYRILLIC CAPITAL LETTER ER
   F3  CYRILLIC CAPITAL LETTER ES
   F4  CYRILLIC CAPITAL LETTER TE
   F5  CYRILLIC CAPITAL LETTER U
   F6  CYRILLIC CAPITAL LETTER ZHE
   F7  CYRILLIC CAPITAL LETTER VE
   F8  CYRILLIC CAPITAL LETTER SOFT SIGN
   F9  CYRILLIC CAPITAL LETTER YERI
   FA  CYRILLIC CAPITAL LETTER ZE
   FB  CYRILLIC CAPITAL LETTER SHA
   FC  CYRILLIC CAPITAL LETTER REVERSED E
   FD  CYRILLIC CAPITAL LETTER SHCHA
   FE  CYRILLIC CAPITAL LETTER CHE
   FF  CYRILLIC CAPITAL LETTER HARD SIGN

Security Considerations

   Security issues are not discussed in this memo.

Author's Address

   Andrew A. Chernov
   RELCOM Development Team
   Moscow, Russia

   EMail: ache@astral.msk.su
   FIDOnet: 2:5020/23.34