http://codebase64.org/ 2008-08-28T11:06:23-04:00 http://codebase64.org/ http://codebase64.org/lib/images/favicon.ico text/html 2008-08-24T07:36:51-04:00 Mats Andrén http://codebase64.org/doku.php?id=base:jch_20.g4_player_file_format&rev=1219577811&do=diff By FTC/HT. I wanted to code a converter from the JCH editor file format into the format I use in my own editor, and I thought I could just as well share the structure of the JCH file format with you. The description is not 100% complete, but maybe someone will find it useful anyway. Enjoy! text/html 2008-08-15T08:31:35-04:00 Roland http://codebase64.org/doku.php?id=base:julia_fractal_morpher&rev=1218803495&do=diff ; Julia Morph ; ----------- ; Entry for the July 1996 NTSC 4k ; demo contest. ; ; Coded by dW/style, July 1, 1996 ; ; Notes: ; ; Assembled using turbo assembler ; macro + version ; ; The code assumes there is a music ; routine at $1000(init)/$1003(irq) ncolors = 16 negative = $80 width = 72 height = 56 yinit1 = 0 yinit2 = (width-4)*2 cset = $3000 cset2 = $2800 initcptr = cset+((width/4)*height) itercnt = 32 ; max # of iterations screen = $0400 color = $d800 pointerl = … text/html 2008-08-15T08:30:07-04:00 Roland http://codebase64.org/doku.php?id=base:demo_sources&rev=1218803407&do=diff Various sourcecodes for demoparts. See also the VIC and Demo programming section, which contains a lot of material related to VIC graphics coding. For example there is descriptions about graphics algorithm implementations, graphics modes, demo coding tutorials, complete sourcecodes for demo effects and so on. text/html 2008-08-06T07:52:43-04:00 Johan Forslöf http://codebase64.org/doku.php?id=base:generating_sines_with_basic&rev=1218023563&do=diff By Doynax Generating sines in BASIC is slow, but might be suitable for programs that need to be small. Improve if you can! The routine is currently 28 bytes long and takes 5.9 seconds to execute: table = $0400 ;; The output is a set of negated (phase-shifted by 180°) ;; sines between -128 and +127. ;; Preferably a low page. Must be paged aligned! loop lda #<index ;; Load 5-byte float at 'index' into FAC, the fraction of ldy #>index ;; which is stepped between -0/256..-255/256. js… text/html 2008-08-05T11:49:37-04:00 Martin Piper http://codebase64.org/doku.php?id=suggestions&rev=1217951377&do=diff On this page you can add suggestions for changes/improvements in the wiki. text/html 2008-07-31T08:14:00-04:00 Martin Piper http://codebase64.org/doku.php?id=base:lzmpi_compression&rev=1217506440&do=diff The compression algorithm The compressor uses quite a lot of C++ and STL mostly because STL has well optimised sorted associative containers and it makes the core algorithm easier to understand because there is less code to read through. Even so, when compiled in release mode this algorithm uses less memory and executes a little quicker than some other comparable LZ based algorithms written in C. The algorithm inserts previous data that did not match into a std::multimap of value pairs (the dic… text/html 2008-07-30T19:49:03-04:00 Martin Piper http://codebase64.org/doku.php?id=base:tool_sources&rev=1217461743&do=diff Here are some sources for various C64 tools. At the bottom of the page you can also find sources/scripts for C64 cross development tools for other platforms. * 2Mhz Time Crunch V5 disassembled - Disassembly of Stoat and Tim's Time Cruncher V5. Disassembled by Marko Makela. Added by Richard Bayliss * Decruncher for MDG-Packer/Linker 1.1 - Dasm source code for depacking MDG-Packer Files. * MDG Bytesmasher 0.04 - Dasm Source code of a simple rle packer with 5 packcodes. * Wanted RLE Compre…