On 8/17/21 11:40 AM, Warner Losh via cctalk wrote:
On Tue, Aug 17, 2021, 6:46 AM Dennis Grevenstein via
cctech <
cctech at classiccmp.org> wrote:
Bill Gunshannon wrote:
>
> With 3.1 available why would you want to run 2.0? Someone mentioned
> a 4.0. I don't remember there ever being anything after 3.1 (promised,
> but never saw it delivered) Would be fun to look at.
Yea. I've not seen anything survive on any of the abandonware sites.
But another way to ask: what is fixed between 2.0 and 3.1 that prompts Bill
to ask me why I'd want 2.0 like it was nuts...
As near as I can tell, it wasn't so much bug fixes (after all,
Ultrix-11 is just V7M rebadged) as it was additional hardware support.
But I suspect
anything
beginning with 4 is actually Ultrix-32 which I think went as
far as 4.5.
That seems likely, because AFAIR Ultrix-11 never got past 3.X.
In any way I would like to point out that Ultrix-11 and Ultrix-32 are
completely different: Ultrix-11 based on V7 (+addons) and Ultrix-32
based on 4.2BSD (+addons).
Having looked at the sources to both and running diffs with tuhs, I can
confirm this is the case. And ultrix-32 had different version numbers than
ultrix-11. But the vax and mips versions shared the same sources as far as
I can tell (though I don't know if it is common ancestor or operationally
the same repo).
I have looked on the web and many sites (not DEC) are calling the 4.x
versions running on VAX and MIPS ULTRIX-11 instead of ULTRIX-32 which
is what it actually was.
Also, the addons to ultrix-11 include BSD networking. It has the feel of
2.9BSD with a more polished installer and sysgen (alien name in unix world,
but common for DEC OSes).
And it works quite well within the confines of the limited PDP-11
hardware. :-)
bill