AMC's 'Halt and Catch Fire' suffers from some faulty code

The boxy, early-'80s personal computers that serve as the central obsession in AMC's dullish new technonerd drama "Halt and Catch Fire" (premiering Sunday) will in one sense be understood by observant TV watchers to be the descendants of the late-'60s computer equipment installed as a bulky metaphor during the latest season of "Mad Men."