TRON code

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File Format
Name TRON code
Ontology

This article describes the character encoding used in TRON. Unlike Unicode, it does not use the Han unification; it can clearly distinguish Japanese from Chinese texts.

Character codes are two byte codes and are split into four zones:

  • A zone: High byte and low byte are both in range 0x21 to 0x7E.
  • B zone: High byte in range 0x80 to 0xFD and low byte in range 0x21 to 0x7E.
  • C zone: High byte in range 0x21 to 0x7E and low byte in range 0x80 to 0xFD.
  • D zone: High byte and low byte are both in range 0x80 to 0xFD.

The character codes are grouped in planes; the language selection is by first byte 0xFE and then second byte makes the plane number added to 0x20 (for example, plane 1 is selection by code 0xFE21). The default plane (if not otherwise specified) is usually plane 1.

List of planes:

  • 1 = JIS, GB2312, KS X 1001, and Braille
  • 2,3 = GT
  • 6 = Big5
  • 8,9 = Dai-Kan-Wa-Jiten, hentaigana, etc
  • 10 = Dongba symbols

Conversion other formats into TRON is described below.

Contents

Plane 1

JIS X 0208, and first plane of JIS X 0213:

hi = ku+0x20
lo = ten+0x20

JIS X 0212:

hi = ku+0xA0
lo = ten+0x20

Second plane of JIS X 0213:

hi = numbers 0x87 to 0xA0, contiguous by valid rows of JIS X 0213 (1,3-5,8,12-15,78-94)
lo = ten+0x20

GB 2312:

hi = ((ku-1)*94+ten-1)/126+0x21
lo = ((ku-1)*94+ten-1)%126+0x80

KS X 1001:

hi = ((ku-1)*94+ten-1)/126+0xB7
lo = ((ku-1)*94+ten-1)%126+0x80

Braille:

(unknown)

Plane 9

  • Codes 0x9721 to 0x972A are the Chinese/Japanese numbers one to ten in the square.
  • Codes 0x972B to 0x975A are the katakana in parentheses.
  • Codes 0x975B to 0x9766 are the lowercase roman numbers i to xii in the circle.
  • Codes 0x9767 to 0x977A are the numbers 1 to 20 in the triangle.
  • Codes 0x9830 to 0x9839 are Baronh numbers 0 to 9.
  • Codes 0x9840 to 0x985B are Baronh alphabets: a e i ï u ü é o c s t l n h p f m ai y ÿ œ r au eu g z d b

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