<bslsk05>
en.m.wikipedia.org: Timeline of DOS operating systems - Wikipedia
<kazinsal>
ah, looks like the multitasking DOS got released for a few OEMs in Europe
<kazinsal>
and regular DOS 4.0 was only released for OEMs, no retail/upgrade version available
<geist>
holy crap that page has a ridiculous amount of detail
<kazinsal>
seriously
<kazinsal>
where'd my scrollbar go
<geist>
there’s a guy on youtube that has a series of videos on OS/2, early windows, dos, etc that has this level of detail. wouldn’t be surprised if he didn’t fill this in
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<GreaseMonkey>
i take one look at this channel and hot damn, DOS 4.0 (the interesting one) source code? yes please
<GreaseMonkey>
IIRC it was released some time between 3.2 and 3.3
<GreaseMonkey>
i played with it briefly i think on pcjs and honestly, i wish DOS took that route
<geist>
yah
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<GreaseMonkey>
...ok, looking a bit more into it and reading the blog post, it turns out it *is* the source for the less interesting MS-DOS 4.0, but also a binary beta for the more interesting one and some BIOS source code or at least IBMBIO source code: https://cloudblogs.microsoft.com/opensource/2024/04/25/open-sourcing-ms-dos-4-0/
<bslsk05>
cloudblogs.microsoft.com: Open sourcing MS-DOS 4.0 - Microsoft Open Source Blog
<kazinsal>
yeah, not the most interesting, but still neat
<kazinsal>
I'd love for them to FOSS up DOS 6.22
<kazinsal>
but I'd also like ten million dollars and to be 40 pounds lighter, and only one of those three things is possible