Atari XL User Manual

Graphics
Colour in Graphics Modes
137
The different graphics modes use differing
numbers of colours, but they are all controlled in
the same way. As described in Chapter 12, there
are five colour registers which control the display
colours. The SETCOLOR command is used to
select the colour produced by each register.
The colours of objects displayed on the screen are
set by indicating which colour register is to control
their colour. The command COLOR selects the
colour to be used. The command is followed by a
number which indicates the colour selection, but
the number is not always that of the required
colour register, which can be a little confusing.
In mode 5, four colors are used. The background
colour is controlled by colour register 4, register 3
is not used, and registers 0, 1 and 2 hold the
(foreground' colours. The colours to be used are
selected by COLOR as follows:
COLOR 0 Selects the background colour.
COLOR 1 Selects the register 0 colour.
COLOR 2 Selects the register 1 colour.
COLOR 3 Selects the register 2 colour.
When you first enter mode 5, the colour selected in
the background colour (COLOR 0) held in colour
register 4. Type .
GRAPHICS 5
COLOR 1
so that you are ready to start drawing.

Atari XL Specifications

General

Brand	Atari
Model	XL
Category	Desktop
Language	English