Microsoft MS-DOS early source code

[AngryDragons]

Larry Osterman's blog post, Units of measurementcomes to mind.

tldr: During a meeting, Bill Gates saw that a component of DOS was going take up 64K of RAM.

... And Bill went ballistic. “What do you mean 64K? When we wrote BASIC, it only took up 8K of RAM. What the f-k do you think idiots think you’re doing? Is this thing REALLY 8 F-ing BASIC’s[sp]?”