10 Oct
2003
10 Oct
'03
6:28 a.m.
Alex White wrote:
Why bother doing you own backplanes, if you use ethernet anyway ?
If you're thinking about you own box (doing your own backplane), try to
use four ka655 with 64 mbyte memory each and 4 mbyte shared memory on
the qbus.
But again, probably no software :(
Check the note
again. AFAIRC, this (ka630, ka650, ...) had just a
"mailbox" register to communicate, and only one cpu had access to the
qbus. The other ones had the qbus interface shut down. So, if you didn't
have you special backplane with 4 qbuses, it was pretty limited ...
I've been planning a monster like this, 4 small backplanes mounted in a
hacked-around wide cabinet, 4 processors running as a VAXcluster over
Ethernet...