PBDOS -- Where The Love Affair Began

[Johan Klassen]

AI Overview

Mr. Zale, specifically Robert "Bob" Zale, did not join Borland; instead, Borland purchased his existing BASIC compiler, called "BASIC/Z", which later became known as Turbo Basic when released by Borland in 1987.
Key points about this situation:

Zale's creation: Bob Zale developed "BASIC/Z", the first interactive compiler for CP/M operating system.
Borland acquisition: Borland bought the rights to "BASIC/Z" and rebranded it as "Turbo Basic".
Release date: Turbo Basic was released by Borland in 1987.