Open Sourcing DOS 4

See the canonical version of this blog post at the Microsoft Open Source Blog! Ten years ago, Microsoft released the source for MS-DOS 1.25 and 2.0 to the Computer History Museum, and then later republished them for reference purposes. This code holds an important place in history and is a fascinating read of an operating system that was written entirely in 8086 assembly code nearly 45 years ago.

[roshi]

MS-DOS4のソースコードが公開されてる。この頃から既にC言語は使われてたのかー。