Z80 Test Program - redcode/ZXSpectrum GitHub Wiki
Author: Woigk, Günter
Release date: 2005-01-16
Links: Website, GitHub
Download:
tap
(hosted) -
tap
(original URL)
https://www.youtube.com/watch?v=iAiOMgR-AQ8
azesmbog's fix for the +3: https://www.youtube.com/watch?v=dY9B6AEQCeQ