Omnibus Memory adapter for PDP-8/i and PDP-12
- proto is a version od the bm812i board scaled down to a few
sockets, to make ordering a prototype cheaper.
- bm812i is a version of DEC's BM812i with extra space between the
connector blocks.
- singleboard is an implementation designed to fit into a single
slot in a standard Omnibus backplane.
- sboardnew is a newer version of singleboard, using 74S240
instead of 74H40 to drive the bus.
- bm812inl is a version of the BM812i board without the extra
space around the connector blocks. (It needs to be checked against the
chassis to see if it has the needed clearances.)