README.md

C64 Playground

C64 programming playground. Examples, code fragments, etc.

Links

• http://dustlayer.com/c64-coding-tutorials/2013/2/17/a-simple-c64-intro
• Petscii editor
  • http://petscii.krissz.hu/
  • https://www.lvllvl.com/
• Random Numbers by XorShift: https://codebase64.org/doku.php?id=base:16bit_xorshift_random_generator
• Programming Tricks:
  • http://www.ffd2.com/fridge/tips.html
  • https://wiki.nesdev.com/w/index.php/Programming_with_unofficial_opcodes
  • https://wiki.nesdev.com/w/index.php/6502_assembly_optimisations
  • http://forum.6502.org/viewtopic.php?f=2&t=1764
  • http://6502.org/tutorials/compare_beyond.html
• https://github.com/mist64/fastboot1541
• Screen Timing/Bad Lines
  • https://nurpax.github.io/posts/2018-06-19-bintris-on-c64-part-5.html
  • https://dustlayer.com/vic-ii/2013/4/25/vic-ii-for-beginners-beyond-the-screen-rasters-cycle
• Cartridge
  • https://github.com/jviskari/cc65cart
• Sweet16: https://github.com/Silverune/Sweet16

SID specific

• In-depth information (and SID dissections): https://digilander.libero.it/ice00/tsid/sidin/

Drive

• Fastloader
  • https://cadaver.github.io/rants/irqload.html
  • https://www.pagetable.com/?p=568

BASIC

• http://retro.lonningdal.net/home.php?page=Adventure&part=100 Basic optimisation
• https://www.atarimagazines.com/compute/issue38/087_1_COMMODORE_REM_REVEALED.php REM and SHIFT+L, etc.

Compression

• https://github.com/dmsc/zx02
• http://www.retrosoftware.co.uk/forum/viewtopic.php?f=73&t=999 (lz4, lzsa, and other)
• https://github.com/emmanuel-marty/lzsa
• http://forum.6502.org/viewtopic.php?f=2&t=4595 (another homebrew)
• https://github.com/emmanuel-marty/lzsa
• https://xxl.atari.pl/lz4-decompressor/
• http://pferrie.epizy.com/misc/appleii.htm?i=1
• http://madteam.atari8.info/index.php?prod=uzytki
• https://github.com/bbbradsmith/huffmunch
• https://wiki.nesdev.com/w/index.php/Text_compression
• General Compression Links
  • https://modexp.wordpress.com/2020/05/27/komposite-shellcode/