Monthly Archives: April 2017

Galactic Rasterbar Power

Today I am releasing a new C64 Demo: Galactic Rasterbar Power.

PRG file: Galactic Rasterbar Power.prg
Music only: Phosphor Advance.sid

screen shot

Galactic Rasterbar Power screen shot

I coded this demo in my spare time to accomplish a few goals:

  • Broaden my understanding of 6502/6510 assembly and the C64 memory map
  • Learn more about the VIC-II and how it works along with the CPU
  • Create some interesting multicolor bitmap graphics for my C64
  • Master the raster bar demo effect that I have always really enjoyed
    • And by extension, understand and implement cycle-exact code
  • Make a demo that works equally well on PAL and NTSC hardware.
  • Write some music for the SID chip, and make it work on both major revisions of the SID
  • As a bonus: make the raster bar effect look absolutely perfect in VICE debug borders.

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