[rescue] Sun 3's... was Re: Need Sun 3/110 RAM and Battery

[Patrick Finnegan]

On Friday 24 August 2007, der Mouse wrote:
> >> [clustering multiple -3/60 boards in a -3/260 cardcage]
> >
> > A friend had a similar idea with Sun ELC boards. They are small,
> > one of the fastest sun4c machines and need only 5 V @ 2 A. (+-12 V
> > is needed for serial ports and the Ethernet transceiver only.)
>
> What about -5?  The power supply feeds them -5V as well; what's that
> there for?
>
> Also, if you drop 112V, then it seems to me as though all your
> communication with the world outside the machine is dead, and how
> could you cluster them then?  SCSI networking?

I'd guess one of those AUI hub things, like a DEC DELNI (I think).  They 
shouldn't need the 12V transceiver power.

You can probably fudge the serial to be +5/0V instead of +12/-12V, or 
use a keyboard/framebuffer.

Pat
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