Atari 400 Basic Reference Manual page 59

TABLE 9.4-TABLE OF SETCOLOR "DEFAULT" COLORS*
Set color Defaults To Luminance
Actual Color
(Color Register)
Color
0
2
8
ORANGE
1 12
10 GREEN
2
9
4
DARK BLUE
3
4 6
PINK OR RED
4
0
0
BLACK
*
"DEFAULT" occurs if not SETCOLOR statement is used.
Note: Colors may vary depending upon the television monitor type, condition,
and adjustment.
A program illustrating Graphics mode 3 and the commands explained so far in
this section is shown below:
10 GPAFHICS 3
2'€1 ~:;ETCOLOF 0 .~ 2_, B
=
C :OL!)P 1
30 PLOT 17 .. 1 : DF.'At.JTO 1 7 . . 1 0 : DPAl·JTO 9 ·' 1 :::
40 PLOT 19.' 1 : DRAL·HO 19 . . 1:::
50 PLOT 20 . . 1 :
D~~AL.JTO
20 .. 1 E
60 PLOT 22 .. 1 : DRA~.JTO 22 .. W: D~:A~·lTO 30 , 18
70 POKE 752 . . 1
8(1 F'P HH ; F'P WT
II
AT A~: I FEF~:~~Gt·iAL COi·1P
UTEP~:;"
9(1
I~OTO 9(1
The SETCOLOR and COLOR statements set the color of the points to be p lotted
(see Table 9.5). The SETCOLOR command loads color register 0 w ith hue 2
(orange) and a luminance of 8 ("normal"). The next 4 lines p lot the points to be
displayed. Line 90 suppresses the cursor and line 100 prints the string expres-
sion ATARI PERSONAL COMPUTERS in the text window (6 spaces in).
Note that the background color was never set because the default is the d esired
color (black).
If the program is executed , it will print the Atari logo in the graphics window
and the string expression in the text window as in Figure 9-3.
Graphic Modes and Commands 51