high moby: /hi:' mohb'ee/ n. The high half of a 512K PDP-10's
physical address space; the other half was of course the low moby.
This usage has been generalized in a way that has outlasted the
PDP-10; for example, at the 1990 Washington D.C. Area Science
Fiction Conclave (Disclave), when a miscommunication resulted in two
separate wakes being held in commemoration of the shutdown of MIT's
last ITS machines, the one on the upper floor was dubbed the
`high moby' and the other the `low moby'. All parties involved
grokked this instantly. See moby.