10 Mar
2007
10 Mar
'07
1:10 a.m.
On Sat, 10 Mar 2007, Ethan Dicks wrote:
My recollection of it was that (when it was working),
the
DWBUA was ok in a native VAXBI environment like the 82xx/83xx, but
that when you started stacking bus converter on bus converter, it
didn't take much to get things to the point of violating timing
maximums on certain things.
I am aware of an installation that involved a UNIBUS attached to a
VAX 6520, but that required a microcode modification to the DWBUA. I
don't know the details of the modification.
That would be UNIBUS->BI->XMI->NMI.
--
roger ivie
rivie at ridgenet.net