Spin Colors With The Spider

by John and Mary Harrison

Since our new ATARI 800 has the GTIA chip, we have been experimenting with it. SPIDER is a little BASIC program that lets you doodle colors with your joystick.

Mode 11 is our choice for this program because it gives 16 different colors in a high resolution mode (80 pixels horizontally by 192 vertically). When you run the program, a white "spider" appears. The "fire" button changes the spider's color. As you move the joystick the spider leaves a trail of its color. When the spider is white it can be positioned without leaving a line. (It actually draws in background color).

To start a new design, press RESET and type RUN.

Listing: SPYDER.BAS Download