26 Feb
1999
26 Feb
'99
5:01 p.m.
Megan further explained my uVAX II question:
There are some extra signals which are also bussed
which carry info
between boards... like whether the address was handled by the first
board or not. If so, then the second doesn't respond. If not, then
the second does the address adjustment and see if it should respond.
OK, except that I still don't understand. It looks like ALL of the signals
are bussed straight across, except the bus grant. So I still don't see
how the first card knows that it is first, and why the second card doesn't
erroneously think that it is first.