🚀 go-pugleaf

Just a few corrections to multiple articles:

madhavan.srinivasan@gs.com (Madhavan Srinivasan) writes:

> The bus was actually called the Xbus.  The SS1000 had one Xbus.
> The SC2000 had 2 of 'em ("dual Xbus"), hence the name XDbus.

The Xbus is the bus between the XDbus(es) and the CPU module. It is
similar and compatible with the Mbus, but not all Mbus modules also
support the Xbus. There is one XDbus in the SS1000, two in the SS2000,
and four in the Cray 6400.

Birger.Wathne@nho.hydro.com (Birger Wathne) writes:

> Wonko the Sane wrote:

> > On Thu, 19 Dec 1996 13:45:17 +0000, Andrew Harrison <andrew.harrison@uk.sun.com> wrote:

> > >sun4m  SPARC with MBus

> > close but no cigar, Sparc5's are sun4m and they have no MBus.

> Yes, they have the Mbus architecture, but they don't have
> replaceable CPU modules. But that's just a physical issue.
> It's still Mbus based.

It is not, I'm afraid. The sun4m started out as the Sun 4/6x0, the first
multi-processor machine from Sun. It used SS2-class CPU chips.

Later, sun4m got to mean "SPARC Reference MMU" or something like that.
In any case the SS5's MicroSPARC has no Mbus. But otherwise it is
suffiently compatible to SuperSPARC and HyperSPARC to be in the
same class.

cdewick@lios.apana.org.au (Craig Dewick) writes:

> In <slrn5bkvnr.aen.wonko@madness.tmok.com> wonko@madness.tmok.com (Wonko the Sane) writes:

> >On Thu, 19 Dec 1996 13:45:17 +0000, Andrew Harrison <andrew.harrison@uk.sun.com> wrote:

> >>sun4m	SPARC with MBus

> >close but no cigar, Sparc5's are sun4m and they have no MBus.

> The 'm' means Microsparc, not Mbus, as far as I know.

Wrong again. It does. sun4m includes Mbus machines *and* MicroSPARC machines.
One could speculate that the name MicroSPARC was choosen to retian the 'm'
in sun4m...
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