Look in
http://www.bitsavers.org/pdf/dec/pdp11/1144/1144_SystemTechMan.pdf  pp
3-3 ~ 3-9 and 5-16 ~ 5-27
Covers basic DEC UNIBUS backplane numbering conventions and the DD11-DK
expansion backplane layout.
Julian Wolfe wrote:
  Alright.
 I know this is a very COMMON problem, but the other COMMON problem is there
 seems to be no good explanation as to what pins are what on the damn
 backplane.  I know I may be coming off sort of abrasive here (no offense
 meant to Henk or anyone else) but even the 11/34 documentation *also* talks
 about the bus grant path and gives no pin explanation on the backplane -
 you're just supposed to inherently know where the connection between CA1 and
 CB1 is in a mass of pins and wire.
 I've looked through what manuals are available on bitsavers and manx, and
 got nothing at all that I could make sense of.
 All I'm looking for is simple pin labling for a DD11 9 slot backplane.  Why
 was this so hard to put in the manual?
 IMO this information should be included in whatever FAQ you want to add the
 bus grant info.