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  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
          mode".
       
          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
          others.
       
          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.
       
          (1995-02-21)