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Julia 89 v0.9b
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This program for the TI-89 calulator draws the Julia fractal.

Features:
* 32-bit fixed-point math.
* 7 shade gray scale.
* Zooming capability.
* Changeable parameters.
* Written in assembly.

To use Julia 89 send julia89.89z to your calculator using a link cable.
You need DoorsOS with libraries graphlib and hexlib installed.

At the home screen type julia89() and the program should now prompt
you for parameters. These parameters determine the appearance of
the fractal. The default vales are 004CCCCC and 00999999 (hex
fixed point 8-24 format) which equals about 0.3 and 0.6 decimal.

You can change the first parameter by using the arrow keys.
Press enter to edit the second parameter. Once satisfied, press
enter to draw the fractal.

When drawing is complete, press any key to bring up the zoom box. 
The box can be positioned by using the arrow keys.
Select the area you want to zoom in on and press ENTER.
 
You can quit at any time, except when the fractal is being calculated
or you edit the parameters, by pressing the ESC key.  

Because of the limitations of 32-bit calculations, zooming many times will
decrease detail and complexity of the fractal. The fracal will also draw
slower every time you zoom. You should be able to zoom 10 times or so
before image quality gets really bad.

Known bugs:
Very bad and ugly parameter interface.

I cannot be held responsible for any damage this program may cause.


Version history

v0.9b
* Initial release.


Author:
Mattias Radeskog, Stockholm, Sweden.
E-mail: d97-mra@nada.kth.se
Site: http://hem1.passagen.se/mdr/

Please report bugs!