26 Jul
2011
26 Jul
'11
7:13 a.m.
On Tue, Jul 26, 2011 at 3:41 AM, James Wilson <james at machineroom.info> wrote:
Hi Ethan, are you saying the BDV is required for a
minimal system? My
understanding was I should be able to start ODT without it, since it's built
into the LSI-11 CPU. The CPU also provides the pull-ups for the bus.
The BDV-11 is bootstrap code and bus terminators, not ODT code. The
CPU provides one end of bus termination. The BDV-11 provides the
other. The backplane does not have any termination of its own (unlike
some enclosures like the BA23).
AFAIK, you will still need the BDV-11 in that last slot.
-ethan