Frame - redcode/ZXSpectrum GitHub Wiki

Author: Woodmass, Mark
Release date: 200x ^{(unreleased, provided by the author)}
Links: Discord post
Download: tap _^(hosted) - zip _{^{(Discord post)}}

The test checks the period how many t-states ULA holds interrupt pin low (it must be exactly 32 t-states).

Note -- the test works on early timings only.