TRS-80 character set

The TRS-80 computer manufacturered by Tandy / Radio Shack contains an 8-bit character set.^[1] It is partially derived from ASCII, and shares the code points from 32 - 95 on the standard model. Code points 96 - 127 are supported on models that have been fitted with a lower-case upgrade.^[2]

The character set consists of letters, various numeric and special characters^[1] as well as 64 semigraphics called squots (square dots) from a 2×3 matrix.^[3] These were located at code points 128 to 191 with bits 5-0 following their binary representation,^[3] similar to alpha-mosaic characters in World System Teletext.^[4] These characters were used for graphics in games, such as Android Nim.^[5]

Character set

TRS-80 model I character set^[6][3][7]

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
0_	0	1	2	3	4	5	6	7	Backspace and erase current character 8	9	Line feed 10	11	12	Carriage return 13	Cursor on 14	Cursor off 15
1_	16	17	18	19	20	21	22	23	Backspace → Cursor 0018 24	Advance ← Cusor 0019 25	Downward ↑ linefeed 001A 26	Upward ↓ linefeed 001B 27	Home; move display to (0,0) 001C 28	Move to start of line 001D 29	Erase to end of line 001E 30	Erase to end of frame 001F 31
2_	SP 0020 32	! 0021 33	" 0022 34	# 0023 35	$ 0024 36	% 0025 37	& 0026 38	' 0027 39	( 0028 40	) 0029 41	* 002A 42	+ 002B 43	, 002C 44	- 002D 45	. 002E 46	/ 002F 47
3_	0 0030 48	1 0031 49	2 0032 50	3 0033 51	4 0034 52	5 0035 53	6 0036 54	7 0037 55	8 0038 56	9 0039 57	: 003A 58	; 003B 59	< 003C 60	= 003D 61	> 003E 62	? 003F 63
4_	@ 0040 64	A 0041 65	B 0042 66	C 0043 67	D 0044 68	E 0045 69	F 0046 70	G 0047 71	H 0048 72	I 0049 73	J 004A 74	K 004B 75	L 004C 76	M 004D 77	N 004E 78	O 004F 79
5_	P 0050 80	Q 0051 81	R 0052 82	S 0053 83	T 0054 84	U 0055 85	V 0056 86	W 0057 87	X 0058 88	Y 0059 89	Z 005A 90	↓ 005B 91	↑ 005C 92	← 005D 93	→ 005E 94	_ 005F 95
6_	96	a 0061 97	b 0062 98	c 0063 99	d 0064 100	e 0065 101	f 0066 102	g 0067 103	h 0068 104	i 0069 105	j 006A 106	k 006B 107	l 006C 108	m 006D 109	n 006E 110	o 006F 111
7_	p 0070 112	q 0071 113	r 0072 114	s 0073 115	t 0074 116	u 0075 117	v 0076 118	w 0077 119	x 0078 120	y 0079 121	z 007A 122	{ 007B 123	| 007C 124	} 007D 125	~ 007E 126	± 00B1 127
8_	128	129	130	131	132	133	134	135	136	137	138	139	140	141	142	143
9_	144	145	146	147	148	149	150	151	152	153	154	155	156	157	158	159
A_	160	161	162	163	164	165	166	167	168	169	170	171	172	173	174	175
B_	176	177	178	179	180	181	182	183	184	185	186	187	188	189	190	191
C_	192	193	194	195	196	197	198	199	200	201	202	203	204	205	206	207
D_	208	209	210	211	212	213	214	215	216	217	218	219	220	221	222	223
E_	224	225	226	227	228	229	230	231	232	233	234	235	236	237	238	239
F_	240	241	242	243	244	245	246	247	248	249	250	251	252	253	254	255
	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F

References

Citations

Sources

Further reading

• Bettencourt, Rebecca G. (2017) [2015]. "The Ultimate TRS-80 Font". Kreative Korporation. Archived from the original on 2017-07-29. Retrieved 2017-07-29.