On Fri, 2005-08-12 at 15:51 -0600, Ethan Dicks wrote:
   (like
what's the difference between an DD11-DF and a DD11-DK?) 
 In that particular case, the DD11-DF is meant to contain a CPU, not
 just Unibus cards, (as do most Unibus CPU backplanes).  The DD11-DK is
 a larger version of your 4-slot Unibus backplane - Unibus slots, only;
 no non-Unibus memory or MUD slots or anything that one might find in a
 CPU backplane. 
 
NO!  The DD11-DF is meant to go in BA11-F chassis (21" tall ones) and
the DD11-DK is meant to go in BA11-K chassis (10.5" tall ones).  The
difference is the length of the power harness.  The DF is long and the
DK is short.
There are also DD11-CF and DD11-CK backplanes which are 4 slot versions
of the above.
--
TTFN - Guy