My bedroom is about 9' by 12'. I honestly have
nowhere to put a PDP-11,
which would probably fall through the floor anyways (I live in a trailer).
Well, there are big PDP11s, like the 1145 I have in 2 6' racks. And there
are small PDP11s. A BN23 cabinet is not much larger than a tower PC. A
BA11V is about the size of 2 laptops stacked up (but it rather restricts
you on what CPU board you can have, and you only have a total of 4 slots).
And a Professional 300 series machine has a PDP11 CPU chipset inside,
albeit with a strange I/O bus. And that's about the size of a PC/AT box
So you probably could accomodate a PDP11 if you needed to.
-tony