booting archived Sys III and Ultrix 3.x images
Steven M. Schultz
sms at moe.2bsd.com
Thu Oct 21 12:59:53 AEST 1999
Howdy -
> From: pups at mrynet.com (PUPS mailing list)
>
> Has anyone successfully booted either the System III
> (...Distributions/usdl/SysIII/) or Ultrix (...Distritutions/dec/Ultrix*)
> tape images? I don't have a real PDP-11 any more, however both the
I don't know what the problem with Ultrix is but I suspect
your trouble with System-III is similar to what I wasted a couple
days on eons ago
Spent a fruitless couple days trying to get Sys-III going on a 11/44
only to have it dawn on me that Sys-III didn't have *any* UMR support
except for the DH-11 - thus an 11/70 with MASSBUS devices was the
only thing Sys-III would run on.
As far as I know no effort was put into Sys-III to deal with 22
bit machines that didn't have a MASSBUS (a la 11/70). PERHAPS
that is what is biting you? Feels likely. I know that no effort
was put in to supporting UMRs on 22bit systems such as the 11/44.
The Supnik and Begemot emulators offer up a ~kdj-11 (11/53, 73, ...)
and not an 11/70 so it could be that Sys-III is trying to do
something 11/70'ish that KDJ-11 based systems don't offer.
Steven Schultz
sms at moe.2bsd.com
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