Multinational Character Set
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Multinational Character Set

The Multinational Character Set (DMCS or MCS) is a character encoding created in 1983 by Digital Equipment Corporation (DEC) for use in the popular VT220 terminal. It was an 8-bit extension of ASCII that added accented characters, currency symbols, and other character glyphs missing from 7-bit ASCII. It is only one of the code pages implemented for the VT220 National Replacement Character Set (NRCS).[1][2] MCS is registered as IBM code page 1100 (Multinational Emulation) since 1992.[3] Depending on associated sorting Oracle calls it WE8DEC, N8DEC, DK8DEC, S8DEC, or SF8DEC.[4][5]

Such "extended ASCII" sets were common (the National Replacement Character Set provided sets for more than a dozen European languages), but MCS has the distinction of being the ancestor of ECMA-94 in 1985[6] and ISO 8859-1 in 1987.[7]

The code chart of MCS with ECMA-94, ISO 8859-1 and the first 256 code points of Unicode have many more similarities than differences. In addition to unused code points, differences from ISO 8859-1 are:

MCS code point Unicode mapping Character
0xA8 U+00A4 ¤
0xD7 U+0152 OE
0xDD U+0178 ?
0xF7 U+0153 oe
0xFD U+00FF ÿ

Character set

In the following table, code points that differ from ISO/IEC 8859-1 are shown boxed.

Legend:

See also

References

  1. ^ "VT220 Programmer Reference Manual" (2 ed.). Digital Equipment Corporation (DEC). 1984 [1983]. 
  2. ^ "TinyTERM Emulator -- National Replacement Character Set (NRCS)". Century Software. Archived from the original on 2016-12-01. Retrieved .  [sic]
  3. ^ a b "SBCS code page information - CPGID: 01100 / Name: Multinational Emulation". IBM Software: Globalization: Coded character sets and related resources: Code pages by CPGID: Code page identifiers. 1. IBM. 1992-10-01. Archived from the original on 2016-12-02. Retrieved .  [1] [2] [3]
  4. ^ Baird, Cathy; Chiba, Dan; Chu, Winson; Fan, Jessica; Ho, Claire; Law, Simon; Lee, Geoff; Linsley, Peter; Matsuda, Keni; Oscroft, Tamzin; Takeda, Shige; Tanaka, Linus; Tozawa, Makoto; Trute, Barry; Tsujimoto, Mayumi; Wu, Ying; Yau, Michael; Yu, Tim; Wang, Chao; Wong, Simon; Zhang, Weiran; Zheng, Lei; Zhu, Yan; Moore, Valarie (2002) [1996]. "Appendix A: Locale Data". Oracle9i Database Globalization Support Guide (PDF) (Release 2 (9.2) ed.). Oracle Corporation. Oracle A96529-01. Archived (PDF) from the original on 2017-02-14. Retrieved . 
  5. ^ "Oracle characterset descriptions for 9.2". Daylight Chemical Information Systems. 2017. Archived from the original on 2017-02-14. Retrieved . 
  6. ^ Standard ECMA-94: 8-bit Single-Byte Coded Graphic Character Set (PDF) (1 ed.). European Computer Manufacturers Association (ECMA). March 1985 [1984-12-14]. Archived (PDF) from the original on 2016-12-01. Retrieved . [...] Since 1982 the urgency of the need for an 8-bit single-byte coded character set was recognized in ECMA as well as in ANSI/X3L2 and numerous working papers were exchanged between the two groups. In February 1984 ECMA TC1 submitted to ISO/TC97/SC2 a proposal for such a coded character set. At its meeting of April 1984 SC decided to submit to TC97 a proposal for a new item of work for this topic. Technical discussions during and after this meeting led TC1 to adopt the coding scheme proposed by X3L2. Part 1 of Draft International Standard DTS 8859 is based on this joint ANSI/ECMA proposal. [...] Adopted as an ECMA Standard by the General Assembly of Dec. 13-14, 1984. [...] 
  7. ^ Czyborra, Roman (1998). "ISO 8859-1 and MCS". ISO 8859 Alphabet Soup. Archived from the original on 2016-12-01. Retrieved .  [4] [5]
  8. ^ "VT220 Programmer Reference Manual". Digital Equipment Corporation (DEC). Table 2-3: DEC Multinational Character Set (C1 and GR Codes). Retrieved . 
  9. ^ VAX/VMS User's Manual. Digital Equipment Corporation (DEC). April 1986. AI-Y517A-TE. 
  10. ^ DEC (February 1992) [November 1989]. "Chapter 2: Character Encoding - DEC Supplemental Graphic Character Set". VT420 Programmer Reference Manual (PDF) (2 ed.). Digital Equipment Corporation. pp. 24-25. EK-VT420-RM.002. Archived (PDF) from the original on 2017-01-29. Retrieved . 
  11. ^ Flohr, Guido (2016) [2006]. "Locale::RecodeData::DEC_MCS - Conversion routines for DEC_MCS". CPAN libintl-perl. 1.0. Archived from the original on 2017-01-14. Retrieved . 
  12. ^ Kostis, Kosta. "DEC Multinational Character Set (DEC MCS)". 1.20. Archived from the original on 2017-01-16. Retrieved . 
  13. ^ Cowan, John Woldemar (1999-07-07). "DEC Multinational Character Set (1987) to Unicode". 0.1. Unicode, Inc. Archived from the original on 2017-02-18. Retrieved . 

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