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→Double byte codes: Cite unicode.nam which gives the codepoint-to-GCGID mapping for CPGID 1449. Notably while unicode.nam lists 192 characters, U+F83D and U+F83E are used in e.g. ibm-1388_P103-2001.ucm (but absent from unicode.nam) so it seems to have been expanded at some point to 194 characters and maybe one vacancy. |
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When mapped to Unicode, 0xC9A1–C9FE (between the syllable and hanja ranges) are mapped to the Unicode [[Private Use Areas|Private Use Area]] code points U+E000–E05D, while 0xFEA1–FEFE (between the end of the hanja range and the end of the plane) are mapped to U+E05E–E0BB. Outside the Wansung plane, 0x8FA0–9AA5 (where the second byte is in the range 0xA1–FE) are mapped to the Private Use Area code points U+E0BC–E4CA.<ref name="icu"/> The last of these ranges cuts into the start of the [[#0x9A|0x9A row]] (shown below).
Collectively these private use ranges cover the code points U+E000..E4CA, allowing 1227 UDC to be mapped from IBM-949 to Unicode.<ref name="ucm"/> The separate private use area range U+F843..F86E is used by IBM to map some characters within the extended hanja range.<ref name="ucm"/> This follows early recommendations from the Unicode Consortium that corporate characters be allocated from U+F8FF downward and user-defined characters be allocated from U+E000 upward,<ref>{{cite book |section-url=https://www.unicode.org/versions/Unicode1.1.0/ch02.pdf |section=2.0: Changes in Unicode 1.0 |title=The Unicode Standard, Version 1.1 |id=UTR #4 |publisher=[[Unicode Consortium]] |pages=3–4}}</ref> and is part of a larger corporate private use area scheme which is defined internally by IBM, and
=== {{anchor|0x9A}}Lead bytes 0x9A–9D (extended symbols and hanja) ===
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