QBus termination?

[shoppa_classiccmp at trailing-edge.com]

Micronote #035 is the classic reference on this.




      The  following  MicroNote  discusses  the  termination   and   expansion
      configurations  which  are  SUPPORTED  by Digital Equipment Corporation.
      These configurations will deal with  18  and  22-bit  Q-bus  processors,
      backplanes  and  enclosures.   Not all cases presented in this MicroNote
      meet FCC regulations, and only those that do are so marked.
      The MicroNote is partitioned as follows:

           1. System configurations
           2. Single Box expansion/termination rules.
           3. Multiple box expansion/termination rules.
           4. Configuration/case reference chart.
           5. Supported single box configuration cases. 
           6. Supported multiple box configuration cases.

See http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/hardware/micronotes/numerical/micronote35.txt for the whole article.

Tim.