1989 type-in from 'Amstrad Cent Pour Cent' magazine which displays an overscan screen.
Article from the magazine at CPCRulez:
https://cpcrulez.fr/coding_rubi18-overscan.htm
Links:
https://www.cpc-power.com/index.php?page=detail&num=5177
https://www.cpcwiki.eu/index.php/Rubi
https://cpcrulez.fr/auteur-rubi.htm
https://www.cpc-power.com/index.php?page=staff&lenom=Stephane%20RUBINSTEIN
Not emulated - original hardware and software.
Please note that the aspect ratio for this YouTube video is 16:9 but the CPC monitor
has an aspect ratio of 4:3 so you may wish to adjust your viewing device accordingly.