MM11

MM11 refers to a number of different core main memory systems for UNIBUS PDP-11s:

• MM11-E and MM1-F core memories
• MM11-K core memory
• MM11-L core memory
  • MM11-S was a four-slot backplane plus a single MM11-L board set
• MM11-U core memory
• MM11-B core memory
• MM11-C core memory
• MM11-D core memory

The first through fourth were multi-board systems which plugged into a custom backplane which was cabled into the UNIBUS. Some PDP-11/05 CPU backplanes could hold board sets of the later ones. The MM11-U board set was also used in the MJ11 memory system for the PDP-11/70's Main Memory Bus. The last ones plugged into a Modified UNIBUS slot.

See also

• UNIBUS memories

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