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- July 12, 1990
-
- Howdy Folks...
-
- This is what you might call a pre-pre-Alpha release of
- Fractint 12 for the Atari ST. Due to circumstances beyond my
- control, it's going to be a few weeks before I get a chance to
- finish all the work that remains to be done. I'm just putting
- this up now because a few people have asked to see the current
- program, regardless of its incomplete state...
-
- First off - most of the fractal types actually work,
- correctly even. The exception is any type that says "complex"
- in the name. The complex math routines are still giving me some
- hassles... So, a list of don'ts:
-
- Don't try the complex fractal types
- Don't try to save the screen
- Don't try to restore a screen
- Don't try to print the screen
-
- All of the above are almost guaranteed to crash/lockup
- your ST, if not blow it up. ( }-) )
-
- Some other interesting misfeatures... On the zoombox,
- only the horizontal lines are drawn. (Don't ask me, I'm still
- trying to figure it out. Stupid LineA docs...) The mouse isn't
- supported yet, you'll have to use the cursor keys. The color
- cycling code doesn't do anything. In fact, none of the palette
- setting code does anything, you're stuck with the colors I set
- up when I last compiled the thing.
-
- I'm not including the Fractint 12 doc file. The stuff
- that works is simple enough to deal with without the docs. If
- you think you need the docs for something, it most likely isn't
- implemented yet.
-
- I've left the symbol table intact on this copy of the
- program. If you want to play with the color setup, you can
- tweak the values in the array at "_grafpal" wherever it lives.
- This is actually two arrays back-to-back, the symbol names get
- truncated to fit in 8 characters. The first array is the fore-
- ground palette in the flicker modes, and the second is the
- background palette. If you're not interested in using a debugger
- to tweak the colors in hexadecimal, then you can just forget
- you read this paragraph.
-
- The program will work with any resolution, and also
- works with overscan. Note that it only works with the version
- of overscan.prg also included in this archive. (This is a copy
- of Overscan 1.60 that I tweaked. The original doesn't reset
- the LineA screen parameters when you do a Setscreen, this one
- does. You need it if you have overscan and want to toggle low
- and medium rez.)
-
- As a point of trivia - I wrote my own pixel set/get
- routines, because using LineA was too slow, particularly with
- the flicker modes. They work fine with my mono & color setups,
- with or without overscan. If you've got some exotic display
- type that they don't work with, let me know. And trivia for
- overscan users - don't use physbase emulation, or fractint
- won't be able to get the right dimensions for allocating new
- screens.
-
- Rambe ramble ramble... Well, what'd you expect for a
- doc written at 5:30 am. Sigh. I guess I'd have gotten this
- program done sooner if I didn't stop and play with it every
- time I implemented another feature. So it goes... I think it's
- fun, hope you enjoy it. It'll be finished, sometime.
-
- -- Howard Chu
- hyc@math.lsa.umich.edu
-