Microsoft sets its sights on the past with 86-DOS and PC-DOS • The Register
Antiques code show Microsoft has released the source for another of its relics. This time, it’s 86-DOS 1.00 getting the open source treatment, and a whole lot more for retro enthusiasts. The release comes a year after Microsoft set the source for MS-DOS 4.0 free, but it includes a lot more than just the bones…