copper l!nes (zx spectrum)

[eru]

Marcin, what is the colored bar in the lower part of the screen of your beautiful copperu?

It's a marker showing when does the rendering of the 200 lines finish. For a perfect effect, it should be exactly at the bottom of the gray area. Unfortunately, the code is not optimized and it is a bit too slow. Because of that, you can see sometimes little glitches in the rendering.

 

This is by the way a typical method of visualizing how much time does something take on Atari - just set color to A when something starts, and then to B, and you should see