[numpad0]

> which was a character ROM per default but could be changed either with a screw driver or by

No. Stop believing everything ChatGPT told you on this topic and DYOR. That's some bad hallucinations.

[RetroTechie]

Actually a small flathead screw driver is a useful tool to pull an (EP)ROM from its socket. Been there, done that (80s/early 90s).

Might be fun though to check with ChatGPT on how to use a screw driver in this context. :-)