>https://www.theregister.com/2024/01/04/niklaus_wirth_obituary/?td=rt-3a
>Some of my earliest programming was using Turbo Pascal on both a Z80-based CP/M homebrew machine and an original IBM PC 5150.
>Interestingly, the performance was nearly identical on both platforms. My CP/M box had a hot rod 5Mhz Z80B vs. the stock 5150's 4.77MHz 8088.

Almost the same story - in 1986/88 I worked on a CP/M (and a PDP on the other keyboard) with a Z80, and had my first clash with M$, a serious bug they told their resellers to keep mum about. The bug was circumvented at first by a sorting exe that I wrote in TP back then (around the middle of the article). That thing was blazingly fast, compared with just about anything else I saw running on that box.