It is based on an algorithm published on pouet in 2021. Its implementation uses 8 colors. Generated pictures are 128x256 raster images. It is very likely that this algoritm implementation is the fastest known Mandelbrot set computation routine for the 68008.
An archive with the executables is here. There is also a fullscreen variant that computes 256x256 Mandelbrot dots in the archive. The latter can draw the next image.
Sources are available on github.