4 Jun
2003
4 Jun
'03
9:32 a.m.
On 2003.06.04 20:50 Ethan Dicks wrote:
Oh... I was thinking that the 4/6xx was a straight
sun4,
It is more or less a SS10 in 9U VME form factor. (Or the SS10 is a 4/6xx
in a pizza case without VME adapter.)
(as an aside, I've been attempting to surf lately
on a Classic
with Netscape 4.7... one word comes to mind... Ow!)
Ewwww. A Clasic might be the
slowest sun4m machine ever build. AFAIK it
is comparable in "slowness" to a IPX. Hmmm, sun.hardware.FAQ.txt:
SPARCclassic (SPARCclassic Server)(SPARCstation LC) (4/15)
Processor(s): microSPARC @ 50MHz, 59.1 MIPS, 4.6 MFLOPS,
26.4 SPECint92, 21.0 SPECfp92,
626 SPECintRate92, 498 SPECfpRate92
SPARCstation IPX (4/50)
Processor(s): Fujitsu MB86903 or Weitek W8701 @ 40MHz, FPU on
CPU chip, Sun-4c MMU, 8 hardware contexts,
28.5 MIPS, 4.2 MFLOPS, 21.8 SPECint92,
21.5 SPECfp92, 517 SPECintRate92, 510
SPECfpRate92
I looked at putting a large VME CPU in a 3/60 case...
isn't there an
issue with power distribution -
Yes. The 3/60 case doesn't deliver -12 V. The
4/6xx CPU needs -12 V at a
few mA only for the serial lines. It will run with a framebuffer, but
you can't use the serial lines. I solved this problem with a simple
charge pump voltage inverter that generates about -10 V from +12 V that
I mounted in the 3/60 PSU. I have a shematic in PS somewhere.
Naturally. I wouldn't have several 42" racks
of DEC equipment in my
basement (plus many 72" racks elsewhere) if I didn't think big stuff
was fun!
Well, as long as you don't need 30 A (smal config, peak 130 A at
power
on) three phase 400 V power for a single computer... (I know someone
with a machine like that.)
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/