johl,
@johl@mastodon.xyz avatar

Microsoft releases MS-DOS as Open Source:

“This repo contains the original source-code and compiled binaries for MS-DOS v1.25 and MS-DOS v2.0, plus the source-code for MS-DOS v4.00 jointly developed by IBM and Microsoft. (…) All files within this repo are released under the MIT License as per the LICENSE file stored in the root of this repo.”

https://github.com/microsoft/MS-DOS

pjakobs,
@pjakobs@mastodon.green avatar

@johl dug into one DOS4 file at random to find

; REV 2.15 7/13/83 ARR BECAUSE IBM IS FUNDAMENTALY BRAIN DAMAGED, AND
; BASCOM IS RUDE ABOUT THE 1CH TIMER INTERRUPT, THE TIMER
; HANDLER HAS TO GO BACK OUT!!!!! IBM SEEMS UNWILLING TO
; BELIEVE THE PROBLEM IS WITH THE BASCOM RUNTIME, NOT THE
; DOS. THEY HAVE EVEN BEEN GIVEN A PATCH FOR BASCOM!!!!!
; THE CORRECT CODE IS COMMENTED OUT

sethmarinello,
@sethmarinello@mastodon.online avatar

@johl this is awesome but I can’t wait for 3.3 or 5.0 - Dos 4 is a rough time

Jason_Dodd,
@Jason_Dodd@mastodon.social avatar

@johl While I'm completely happy with freedos, this is cool.

AdeptVeritatis,
@AdeptVeritatis@social.tchncs.de avatar

@johl

Academic research needs sources to point to. This allows a lot of papers to be written now. :mastosunglasses:

The power of enabled this. In the end, Microsoft is forced to go open-source to stay relevant. Not, that this small part is important, but still remarkable.

aeveltstra,
@aeveltstra@mastodon.social avatar

@johl Holy cow. I guess pigs do fly in this universe.

TritTriton,
@TritTriton@shelter.moe avatar

@johl MS-DOS 6.2x’s turn when?

It should be useful for retrogaming developers. DOSBox and FreeDOS’s too.

sol_hsa,
@sol_hsa@mastodon.online avatar

@TritTriton @johl I suspect later versions contained more licensed third party components, making open sourcing complicated.

TritTriton,
@TritTriton@shelter.moe avatar

@sol_hsa @johl True for Double/DriveSpace, at least.

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