APPENDIX FIVE



POKE 708,40

and the red by:

POKE 708,70

These are the values listed in the chart above. It's quite simple to
change them to your own colors using either method. Of course, you'll
have to adjust your colors every time you change GRAPHICS modes
or press RESET, since both restore the registers to their default values.
What's more, the player/missile registers can only be changed using
POKE; they have no corresponding SETCOLOR commands and are
all preset to zero. The winter 81/82 edition of The Atari Connection,
the house organ of Atari Inc., had a nice little chart in full color to
display all of the colors available. The SETCOLOR number in the
following list is the value you would place as the second number in the
statement right after the register number.

                      SETCOLOR       POKE
Color                   number      number
Black                      0           0
Rust                       1          16
Red-orange                 2          32
Dark orange                3          48
Red                        4          64
Dark lavender              5          80
Cobalt blue                6          96
Ultramarine blue           7         112
Medium blue                8         128
Dark blue                  9         144
Blue-grey                 10         166
Olive green               11         176
Medium green              12         192
Dark green                13         208
Orange-green              14         224
Orange                    15         240

The next number in the SETCOLOR statement would be the
luminance. You would add the luminance value to the POKE number.

When you want to use the DRAWTO or XIO 18 (FILL) commands, you
must first specify what color register to use by the COLOR command.
The confusing part for most people is that the number in the COLOR
command doesn't correspond to the same number as the SETCOLOR
register and, to make things worse, it's not always the same number in
different GRAPHICS modes! Modes zero, one, and two are text
modes; they print characters to the screen rather than graphics, so you
don't use the COLOR command in these modes. In GR.0, you actually
have only one color as chosen by SETCOLOR 2. The luminance is