JIS X 0201

JIS X 0201

JIS X 0201 8-bit code page
MIME / IANA	8-bit: JIS_X0201 7-bit Roman: JIS_C6220-1969-ro 7-bit Kana: JIS_C6220-1969-jp
Alias(es)	JIS C 6220 8-bit: csHalfWidthKatakana Roman: ISO646-JP, iso-ir-14 Kana: iso-ir-13, x0201-7
Language(s)	Japanese (basic support), English
Standard	JIS X 0201:1969
Classification	ISO 646, Extended ISO 646
Preceded by	Wabun code
Succeeded by	Shift JIS

JIS X 0201, a Japanese Industrial Standard developed in 1969 (then called JIS C 6220 until the JIS category reform), was the first Japanese electronic character set to become widely used. It is either 7-bit encoding or 8-bit encoding, although 8-bit encoding is dominant for modern use. The full name of this standard is 7-bit and 8-bit coded character sets for information interchange (7ビット及び8ビットの情報交換用符号化文字集合).

The first 96 codes comprise an ISO 646 variant, mostly following ASCII with some differences, while the second 96 character codes represent the phonetic Japanese katakana signs. Since the encoding does not provide any way to express hiragana or kanji, it is only capable of expressing simplified written Japanese. Nevertheless, it is possible to express, at least phonetically, the full range of sounds in the language. In the 1980s, this was acceptable for media such as text mode computer terminals, telegrams, receipts or other electronically handled data.

JIS X 0201 was supplanted by subsequent encodings such as Shift JIS (which combines this standard and JIS X 0208) and later Unicode.

Implementation details

7-bit Roman (shift in) set

7-bit Kana (shift out) set

The first 96 codes in JIS comprise a Japanese variant of ISO 646, or ASCII with backslash (\) and tilde (~) replaced by yen (¥) and overline (‾), while the second 96 codes consist mainly of katakana. Control characters are specified in JIS X 0211.

In the 7-bit format, the shift out control character (0x0E) switches to the Kana set and shift in (0x0F) switches to the Roman set. In the 8-bit format, given in the chart below, bytes with the most significant bit set (i.e. 0x80–0xFF) are used for the Kana set and bytes with it unset (i.e. 0x00–0x7F) are used otherwise.

The substitution of the yen symbol for backslash can make paths on DOS and Windows-based computers with Japanese support display strangely, like "C:¥Program Files¥", for example. Another similar problem is C programming language's control characters of string literals, like printf("Hello, world.¥n");.

Codepage layout

JIS X 0201 (8-bit)

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
0_ 0
1_ 16
2_ 32	SP 0020	! 0021	" 0022	# 0023	$ 0024	% 0025	& 0026	' 0027	( 0028	) 0029	* 002A	+ 002B	, 002C	- 002D	. 002E	/ 002F
3_ 48	0 0030	1 0031	2 0032	3 0033	4 0034	5 0035	6 0036	7 0037	8 0038	9 0039	: 003A	; 003B	< 003C	= 003D	> 003E	? 003F
4_ 64	@ 0040	A 0041	B 0042	C 0043	D 0044	E 0045	F 0046	G 0047	H 0048	I 0049	J 004A	K 004B	L 004C	M 004D	N 004E	O 004F
5_ 80	P 0050	Q 0051	R 0052	S 0053	T 0054	U 0055	V 0056	W 0057	X 0058	Y 0059	Z 005A	[ 005B	¥ 00A5	] 005D	^ 005E	_ 005F
6_ 96	` 0060	a 0061	b 0062	c 0063	d 0064	e 0065	f 0066	g 0067	h 0068	i 0069	j 006A	k 006B	l 006C	m 006D	n 006E	o 006F
7_ 112	p 0070	q 0071	r 0072	s 0073	t 0074	u 0075	v 0076	w 0077	x 0078	y 0079	z 007A	{ 007B	| 007C	} 007D	‾ 203E
8_ 128
9_ 144
A_ 160		｡ FF61	｢ FF62	｣ FF63	､ FF64	･ FF65	ｦ FF66	ｧ FF67	ｨ FF68	ｩ FF69	ｪ FF6A	ｫ FF6B	ｬ FF6C	ｭ FF6D	ｮ FF6E	ｯ FF6F
B_ 176	ｰ FF70	ｱ FF71	ｲ FF72	ｳ FF73	ｴ FF74	ｵ FF75	ｶ FF76	ｷ FF77	ｸ FF78	ｹ FF79	ｺ FF7A	ｻ FF7B	ｼ FF7C	ｽ FF7D	ｾ FF7E	ｿ FF7F
C_ 192	ﾀ FF80	ﾁ FF81	ﾂ FF82	ﾃ FF83	ﾄ FF84	ﾅ FF85	ﾆ FF86	ﾇ FF87	ﾈ FF88	ﾉ FF89	ﾊ FF8A	ﾋ FF8B	ﾌ FF8C	ﾍ FF8D	ﾎ FF8E	ﾏ FF8F
D_ 208	ﾐ FF90	ﾑ FF91	ﾒ FF92	ﾓ FF93	ﾔ FF94	ﾕ FF95	ﾖ FF96	ﾗ FF97	ﾘ FF98	ﾙ FF99	ﾚ FF9A	ﾛ FF9B	ﾜ FF9C	ﾝ FF9D	ﾞ FF9E	ﾟ FF9F
E_ 224
F_ 240

Variants and extensions

Shift JIS

Main article: Shift JIS

IBM's implementations

Code page 897 is IBM's implementation of the 8-bit form of JIS X 0201. It includes several additional graphical characters in the C0 control characters area, and the code points in question may be used as control characters or graphical characters depending on the context, similarly in concept to OEM-US, but with different graphical characters. The C0 rows are shown below.

Code page 897, rows 0x00 and 0x10 only

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
0_ 0	NUL 0000	╔ 2554	╗ 2557	╚ 255A	╝ 255D	║ 2551	═ 2550	￬ FFEC	BS 0008	￮ FFEE	LF 000A	〿 303F	FF 000C	CR 000D	￭ FFED	☼ 263C
1_ 16	╬ 256C	DC1 0011	↕ 2195	DC3 0013	▓ 2593	╩ 2569	╦ 2566	╣ 2563	CAN 0018	╠ 2560	░/FS 2591/001C	↵ 21B5	￪/DEL FFEA/007F	￨ FFE8	￫ FFEB	￩ FFE9

IBM also implements the 7-bit Roman set of JIS X 0201 as Code page 895 and the 7-bit Kana set as Code page 896 for use as ISO 2022 or EUC-JP code-sets. Code page 896, in addition to standard JIS X 0201 assignments, defines five additional assignments, shown below. Although use of these extended characters is not permitted by the associated CCSID 896, they are permitted by the alternative CCSID 4992.

Code page 896, row 0x60 only

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
6_ 96	¢ 00A2	£ 00A3	¬ 00AC	\ 005C	~ 007E

IBM's Code page 1041 is an extended version of Code page 897, encoding these five IBM extended characters in alternative locations which are compatible with Shift JIS (respectively 0x80, 0xA0, 0xFD, 0xFE and 0xFF).

IBM's Code page 903 is encoded for use as the single byte component of certain simplified Chinese character encodings. Despite this, it follows ISO 646-JP / the Roman half of JIS X 0201, in that it replaces the ASCII backslash 0x5C (rather than the ASCII dollar sign 0x24 as in GB 1988 / ISO 646-CN) with the yen/yuan sign. It also uses the same C0 replacement graphics as code page 897. It is closely related to Code page 904, which is encoded for use as the single byte component of certain traditional Chinese character encodings, and uses the same C0 replacement graphics, but follows ASCII.

Others

• 

  NEC variant used on the PC98 series.

• 

  Hitachi variant used on the HD44780.

External links

• Diagram of JIS X 0201 (as 7-bit code sets)