PDP-11/44 (configuration and identification)

Closer examination of my newly acquired 11/44 shows the following cards (right to left, as when standing at the front panel looking back towards the power supply).... CIM/M7090 open slot open slot DATAPATH/M7094 CONTROL/M7095 MFM/M7096 CACHE/M7097 UBI/M7098 open slot Standard Memories MM-144 open slot open slot open slot M9202 side 1 M9202 side 2 way down towards the front is a G727A Grant Continuity (about 2"x2") open slot open slot open slot open slot open slot open slot M9302 Most of these cards intuitively make sense as to their function. But what is MFM and UBI? The standard memories MM-144 looks like half the sockets are populated - I'm thinking 512K? Is this a runnable system or do I have to add cards or move cards to get a boot console alive? The system id tag says 11/44-XX upgraded to 11/44-CA. What's the CA designation? There were 3 cables screwed to a metal bar just thrown inside the cpu chassis: One was a Berg14 to Berg24, BC44D-09. Wheres this go from/to? One was Berg24-DB25F, BC44A-10. I'm guessing system console :) One was 20 pin DIP ribbon to berg20, and the berg 20 plugged into a little adapter that presented DB25. Any ideas? Lastly, the front panel switch. Appears 3 position, set left, set center, and momentary right returning to center. Is this correct operation or is the switch messed up? Anyone have a spare TU58? <Grin>! Just curious about most of this, don't really have time yet to work on it (still slaving over HP2100's and 7900A and 7906)! Jay West