high bit = H = highly

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.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.

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