Explanation

Using only fixed point math, plot in ASCII-art the chaotic region (r between 2.5 and 4) of the recurrence relation:
x[n+1] = r * x[n] * (1 - x[n])

en.wikipedia.org/wiki/Logistic_map

Requirements

You can install a web browser that supports at least JavaScript 1.0 (1995) to use this tool or you may consider implementing a GemiWeb0 browser with JavaScript0 yourself according to the following specification:

bkil.gitlab.io/gemiweb0