VISDEMO1

VISDEMO1 is a demoscene-style demo for the NABU PC, written in C and hand-tuned Z80 assembly with NABU-LIB. It opens with a 4x rainbow logo over rasterbars, then a three-layer parallax starfield with bouncing "NABU" sprites. A real-time 3D cube then morphs into a rotating 4D hypercube. After that come a full-screen 256-shade dithered plasma and a sine scroller whose letters each bob on their own wave. It ends with typewriter credits. An AY-3-8910 chiptune with bass, drums, arpeggios and a vibrato lead plays throughout. Most scenes run at 60 fps on the stock 3.58 MHz Z80 and TMS9918A. Press any key to skip a scene.