I think a very early Turbo Pascal was in assembly, but I would find that hard to believe of Delphi.
Also, there was a source code leak about a decade ago of Turbo Pascal 6.0 that showed the compiler was still 100% x86 assembly. Just found it via Yandex - it was pretty hard to find with Google. (I only looked at the directory listings of the source code filenames just now, at some sourceforge-like site.)
I'm 40, I've programmed since 87 and the languages I've truly loved using in the real world have always been Anders languages in some way (TP -> Delphi -> C#/.Net -> TypeScript) - he has amazing taste in what he implements and when - he just has an eye for practical languages that solve common problems nicely.