OR> (Commonly abbreviated to "386", trademark "Intel386") The successOR to the Intel 80286microprocessOR. 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)