Joerg Schilling writes:
> Rainer Orth <ro at TechFak.Uni-Bielefeld.DE> wrote:
>
> > From my understanding, it was not. UltraSPARC I support was dropped when
> > 32-bit SPARC was removed. The fact that US-I machines run perfectly fine
> > in 64-bit mode (and have been since Solaris 7) wasn't taken into
> > consideration. Yes, there was a small risk, but at least you had the
> > choice. With the wholesale removal, you didn't any longer.
>
> The lowspeed US-1 machines had a problem as a 64 bit instruction that could
> hold the machine was not privileged by mistake. Otherwise, everathing was
> perfect ;-)
True, but this has been the case from the beginning, and AFAIK nobody
outside of Sun ever knew how to do this. This hasn't hindered them from
shipping S7/8/9 with the ability to run the machines in 64-bit mode.
Rainer
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Rainer Orth, Center for Biotechnology, Bielefeld University
