The DOS TP compiler was still at the heart of Delphi 1 supported an inline assembler and reference-based class system, code generator, etc. in less than 43k lines of assembler (it was entirely written in assembler).
(32-bit Delphi 2 switched to a C-based compiler originally written by Peter Sollich. I maintained the front end on that compiler for 6 years; PS followed AH to MS.)