rvassar@c514405-a.lvrmr1.sfba.home.com (Rob Vassar) writes:

>  It's roughly equivalent to a SS10.  It even appears to share some of the
>SS10's chip set.  I have one in a 4/110 case, and it works OK as long as I 
>keep the vents clean, and the room temp doesn't go above 80 degrees F.

I've got one here in one of the old vertical 3-slot SunVME towers from the
3/1x0 days. I picked up the 4/6x0 board second hand from the University of
Wollongong (here in Australia - it's about 30 minutes drive from where I
live) for A$200, complete with 128 meg of RAM!

>  If you intend to purchase one, make sure to get a late revision PROM so that
>you can use the SuperSPARC CPU's.  If you get the older SM100 modules, you
>won't be able to use more than 1 CPU under NetBSD, and they're basicly the
>same CPU as a SS2.  The SuperSPARC CPU modules have the same problem with 
>regards to MP under NetBSD, but at least they issue 3 instructions per clock,
>vs. 1 or less for the sm100's.

The last revision of the bootROM's for the 4/6x0's was 2.14v3. I don't yet
have the ROM images in my bootROM archive (which you can explore at
"http://lios.apana.org.au/~cdewick/data/bootroms.html"), but I believe
they're somewhere in my email from last year! 8-)

As for CPU modules, you can use SM-41 up to SM-61 Supersparc CPU's, but not
the SM-71 or SM-81 SuperSparc-2 CPU's (they were never supported on the
4/6x0's from what I have gleaned out of Sun's documentation at
docs.sun.com). I don't know how the Hypersparc support goes, but Ross
probably had special bootROM's which could support most of the high-end
modules right up to the 125 or 150 Mhz ones. Maybe if someone from
Bridgepoint reads this they can give us some more accurate info about
Hypersparc support in 4/6x0 bootROM's? 8-)

Regards,

Craig.
--
            Craig Dewick. Send email to "cdewick@lios.apana.org.au"
  Point a web browser at 'http://lios.apana.org.au/~cdewick/sun_shack.html' to
    access my archive of Sun information and links to other places. For info 
          about Sun Ripened Kernels, go to "http://www.sunrk.com.au"