ZX Spectrum Timing Tests 48K

Author: Butler, Richard; Butler, Tim
Release date: 2010-04-06, 2010-04-14
Links: Announcement, Website, Download page
Download: sna, tap, tzx, wav _^(hosted) - sna, tap, tzx, wav _{^{(original URL)}}

Expected results

Results on real hardware

ZX Spectrum 48K Issue 6A, CPU SGS Z8400AB1, ULA 6C001E-7 (cold / late timings)

Tested by Matthew London

Late timings

The machine was put under an AC ventilator to cool it before setting it up:
https://www.youtube.com/watch?v=--_PfyDDLkE

Late/early timings

The machine was cold and started with late timings, but went early timings during the execution of the test:
https://www.youtube.com/watch?v=N2XQTE18w48