Atari 800 Basic Reference Manual

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Default
Colors
LIGHT BLUE
DARK BLUE
BLACK
ORANGE
LIGHT GREEN
DARK
BLUE
RED
BLACK
ORANGE
LIGHT GREEN
DARK
BLUE
BLACK
ORANGE
BLACK
LIGHT GREEN
DARK
BLUE
BLACK
Mode or
Condition
MODE 0 and
ALL TEXT
WINDOWS
MODES 1
and
2
(Text Modes)
MODES 3, 5,
and 7
(Four-color
Modes)
MODES4
and 6
(Two-color
Modes)
4
MODE8
(1 Color
2
Luminances)
TABLE 9.5-MODE, SETCOLOR, COLOR TABLE
SETCOLOR
(aexpt)
Color
Color
Register No. (aexp)
DESCRIPTION AND COMMENTS
0 COLOR data
-
1
actually
Character luminance (same color as background)
2
determines
Background
3
character to
-
4
be plotted Border
0
COLOR
data Character
1
actually determines Character
2
character to be Character
3
plotted Character
4
Background, Border
0
1 Graphics point
1
2 Graphics point
2
3
Graphics point
3
- -
4
0
Graphics point (background default), Border
0
1 Graphics point
1 -
-
2
-
-
3 -
-
0
Graphics point (background default), Border
0
-
-
1
1
Graphics point luminance (same color as background)
2
0
Graphics point (background default)
3
-
-
4
-
Border
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Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS