Atari 400 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 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)