November 2004 - Fractdev - mailman.xmission.com

Athlon woes
by Tim Wegner 03 Sep '08

03 Sep '08

I built a computer last year using an Athlon with a Gigabyte motherboard. I had troubles with Fractint - with any SVGA mode the computer would hang after the completion of the image. I always assumed this was an Windows XP issue. Today I tried Fractint with freedos on the same computer, with the same results. So apparently it's an incompatability bgetween fractint and my compuiter. Truecolor, 320x200, diskvideo, and even tweaked modes work. SCGA modes fail, and only after the image completes. This behavior appears to have nothing to do with recent versions. Has anyone else had trouble with Athlon? Hmm, maybe I need to look at bios settings. Tim

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Patch 6
by Jonathan Osuch 03 Jul '05

03 Jul '05

Tim, I'm going to try to wrap up patch 6 this week. So far, this is what I have: Fixed FPUcplxdiv and FPUcplxlog routines in fpu087.c to match assembler code. Fixed it so spaces are recognized in PAR entry names. Fixed evolver parameter entry. Fixed hypercomplex fractal type to turn off symmetry when a cj parameter is used. Fixed the plasma type to show the value of the parameter that is actually used in the image generation. Fixed the plasma type so that a parameter file uses the included colors instead of the default colors. Revised the plasma type prompt to reflect the values that could actually be used. Fixed inside=atan and outside=atan to use the full color palette instead of limiting to 180 colors. Modified the resume code to remove the Xfractint specific sections since they are no longer needed. I still need to move all this over to DOS and make sure nothing is broken. There are other fixes I would like to include, but haven't done them yet. Jonathan

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Fractint/Xfractint directory structure
by Jonathan Osuch 03 Dec '04

03 Dec '04

Tim, I intend to restructure the Fractint/Xfractint directory to look something like: Fractint Common (including header files) DOS (mostly assembly language, but come C) Unix Maps Par Formula IFS Lsystem This should allow me to maintain 3 source trees instead of the current 6. The sixth tree is from having already started this project. The others are Fractint, Xfractint, Fractint-floatonly, Xfractint-floatonly, and Experimental (Allegro). I did a test to see if I can do this under DOS, and I can. It requires editting each file to change the location of the header files, and changing the make files. Which is no different than what is required under Linux. I thought about putting the header files in a separate Headers directory, but that would require more #ifdef's because of the different usage of '/' and '\' in DOS and Linux. If there are no major complaints, I am going to restructure and then start a new CVS repository for each. Any thoughts or advice before I start this? Jonathan

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Xfractint and mandel type
by Jonathan Osuch 14 Nov '04

14 Nov '04

Tim, The Xfractint code in calmanfp.c isn't handling periodicity correctly. If you set periodicity negative so that you can see where it catches the orbits, you'll notice that the white (color=7) area doesn't appear. This seemed like a simple problem... There is a brace in the wrong place and the code wasn't updated to reflect changes made in StandardFractal(). I've gotten it close, but it still isn't an exact match with what is drawn with debug=90. Hopefully I'll get a patch out by the 20th, when my Cisco CCNA class starts. This could be tough because I am currenly studying to take the CompTIA Linux+ Certification exam. Jonathan

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