Microsoft open-sources 86-DOS 1.00, the ancestor of Windows

Microsoft just released the source code for 86-DOS 1.00, made available as an open-source project on GitHub. The release ...
Tom's Hardware on MSN

45 years later, earliest DOS source code transcribed from a stack of old printouts found in garage

Microsoft VP confirms transcribed document “is perfect and recompiles byte for byte to the original binaries.” ...

Microsoft finally open sources DOS 1.0 - and it's so much more than the code

Microsoft finally open sources DOS 1.0 - and it's so much more than the code ...
Ars Technica

The oldest-known version of MS-DOS’s predecessor has been discovered and uploaded

Microsoft’s MS-DOS (and its IBM-branded counterpart, PC DOS) eventually became software juggernauts, powering the vast majority of PCs throughout the ’80s and serving as the underpinnings of Windows ...
Ars Technica

DOS Nostalgia Perpetual Thread

I cut my teeth on DOS with DOS 6, so admittedly I was only around for the more matured version of the OS, but it still taught me an awful lot of about computers that has served me very well since then ...
Hackaday

Transcribing The Source Of The First DOS For The IBM PC

Doing software archaeology can be a harrowing task, as rarely do you find complete snapshots of particular versions of ...