On Wed, 2002-11-20 at 21:55, beaker wrote:
> > > Does anyone know if this thing will work on a Sparc 2 or IPX w/ NetBSD?
> > >
> > > ---
> > >  125Mhz Ross S-Bus CPU with 256K Cache. These came in a bulk carton and
> > > only includes the processor module (which is in an anti-stat bag.) Sun
> > > Part 511-6422. Ross part RT6224K
> > > ---
> > >
> > > Would be sweet if it does!
> >
> > short answer: no.
> >
> > long answer: no, because that is MBus (not SBus) cpu module and
> > SPARCstation 2 or IPX don't have MBus.  these cpus are usable in
> > SPARCstation 10/20, SPARCserver/center machines and other clones which
> > use MBus cpu modules.
> 
> Really. I guess it was a typo then. For the curious, here's the URL of the
> thing:
> http://www.weirdstuff.com/commerce/catalog/productmisc.jsp;jsessionid=072467A4F20A1A95A5700998EFA9F970?product_id=2897&czuid=1037870913468
> 
> So - ARE there any S-Bus CPU upgrades available for either SS 2 or IPX?

The experts can correct me, but AFAIK, there are two basic upgrade paths
(both now discontinued):

1) Weitek SparcUp chip- clock-doubled CPU which replaces the existing
processor chip. This leaves your system as a Sun4c, just faster.
2) Cycle 5 motherboard upgrade- replaces the motherboard with a Sparc
5-compatible one of the correct form factor for your box. The resulting
system is now a sun4m-class system.

<<<john>>>