The first Cosine entry into the now traditional C64 Scene Database Intro Creation Competition for 2018 is Oldest Style, a sequel of sorts to our 2014 contribution Oldstyle. And whilst it might look simple at least from the outside, T.M.R's code jumps through quite a few hoops in order to make an otherwise silly technique work, using unrolled code and waiting for the C64's raster register to change before updating over 184 scanlines. There's further unrolled code updating those routines as well to animate them so this intro decrunches from $0400 to just shy of $3fff.
Trivia: waiting for $D012 on each scanline is how T.M.R tried to handle raster bars as a newly-minted C64 coder back in the 1980s before realising that nobody else was actually doing it that way! A few parts from Sometimes from 1989 are artefacts from those early days but only change registers on every second scanline.