Here comes the second release of the day (and yes, it feels extremely weird “saying” that ), this time called MD201701 and for the Atari 8-bit; raster-flavoured code and the character set are mine, with the music this time being a conversion of an old Adlib tracker song produced by Adam “Sack” Hay.
The bars are a combination of colour splits to set the base hue and sixteen possible lines of bitmap data for the luminance, so any entry in the full 256 colour GTIA palette is available on each scanline – the majority of raster bar demos only use the 128 colour CTIA colours – although I’m only using 240 in total because two sixteen shade sets of brown are so close that one might as well be skipped. There are only two bars plotted for each frame, but an “infinite rasters” routine which cycles through six buffers and rotates the palette on each pass makes things look busier than they are in reality.
Oh, the scrolling messages both have eight colour splits per scanline which was a nightmare to get timed correctly and required quite a bit of hoop jumping in the process! This release was part of the New Years Disc 2017 and organised through the Atari 8-bit section of the Atari Age forums, grab the entire package because it’s worth it!