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 for 386
From The Free On-line Dictionary of Computing (30 December 2018) :

  Intel 80386
      (Commonly abbreviated to "386", trademark
     "Intel386") The successor to the Intel 80286
     microprocessor.  It was the first Intel processor with
     32-bit data and address busses.  It can address four
     gigabytes (2^32 bytes) of memory; however, 16 megabytes is a
     typical maximum in IBM PCs.  The 386 allows multiple
     application programs to run at the same time (when running
     under 386-specific operating systems) using "{protected
     The first IBM compatible to use the 386 was the Compaq
     386, before IBM used it in high-end models of their PS/2
     series.  It is also used in HP's RS series and many
     It does not require special EMS memory boards to expand
     MS-DOS memory limits.  With the 386, the EMS standard can be
     simulated in normal extended memory, and many DOS add-ons
     provide this "Expanded Memory Manager" feature.
     See also Intel 80386SX, BSD386.

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