Colour Table

Here's a list of the colour character sets that are used in TurboForth for 32 column mode. Note that they differ from the colour set numbers in TI BASIC and TI Extended Basic. This is because TurboForth gives you access to all 256 characters of the ASCII character set, whereas TI BASIC and Extended Basic does not.

A useful list of colours is presented here. They are the same colour values as found on the Editor Assembler Quick Reference Card. To convert from TI BASIC or Extended Basic colours, simply subtract 1 from the BASIC colour value.

The colour values can also be used for the word SCREEN which sets the colour of the screen background. In 32 column mode (GMODE=1) just use the value from the table below and it will set the screen colour. Note: Character backgrounds should be set to transparent to allow screen colour to show through! In 40 column mode (GMODE=0) and 80 column mode (GMODE=2), the most significant nybble (4-bits) is the text colour, and the least significant nybble is the screen colour. So, for example, to set white text on black screen, in GMODE 0, simply use the hexadecimal value $F0. Example: 0 GMODE $F0 SCREEN

ASCII Colour Sets

Colour Values

Colour Sets		ASCII Character Range
TurboForth	TI Basic	ASCII Character Range
0	N/A	0	7
1	N/A	8	15
2	N/A	16	23
3	0	24	31
4	1	32	39
5	2	40	47
6	3	48	55
7	4	56	63
8	5	64	71
9	6	72	79
10	7	80	87
11	8	88	95
12	9	96	103
13	10	104	111
14	11	112	119
15	12	120	127
16	13	128	135
17	14	136	143
18	N/A	144	151
19	N/A	152	159
20	N/A	160	167
21	N/A	168	175
22	N/A	176	183
23	N/A	184	191
24	N/A	192	199
25	N/A	200	207
26	N/A	208	215
27	N/A	216	223
28	N/A	224	231
29	N/A	232	239
30	N/A	240	247
31	N/A	248	255

Colour Value		Colour
Hex	Decimal	Colour
0	0	Transparent
1	1	Black
2	2	Medium Green
3	3	Light Green
4	4	Dark Blue
5	5	Light Blue
6	6	Dark Red
7	7	Cyan
8	8	Medium Red
9	9	Light Red
A	10	Dark Yellow
B	11	Light Yellow
C	12	Dark Green
D	13	Magenta
E	14	Grey
F	15	White

Article uploaded 17 July 2017