[comp.realtime] high speed point to point links

dixon@sagittarius.crd.ge.com (walt dixon) (02/08/90)

Hello,

I'm working on a fault-tolerant application and need to establish communi-
cations between four separate vme backplanes.  The maximum distance between
backplanes is ~10 feet.  The system in each backplane must be able to
sustain simultaneous transfer rates on 4 separate bi-directional channels
of at least 200KBytes per second.  (8 unidirectonal links at a minimum
of 100KBytes per second would be acceptable).  I've got at least two
and mabye four cpu cards with local memory and some other peripherals
in each backplane,  so whatever mechanism I use for inter backplane
communication cannot hog the bus.

Based on the througput requirements,  I think I can rule out the generic
vme serial i/o cards with zilog scc chips.  I think that I could use
high speed parallel,  scsi,  or a transputer board.  Has anyone done
something similar to this?  Can anyone recommend specific boards or
another approach?

Please reply directly to me and I will summarize if there is sufficient
interest.  If you do not want your name or response included in my
summary,  please indicate this fact in your reply.

Thanks

Walt Dixon			{arpa:		dixon@crd.ge.com	}
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Walt Dixon dixon@crd.ge.com