Intel 80386


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Intel 80386

(processor)
(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.
References in periodicals archive ?
IBM's other major blunder consisted of failing to use the new Intel 80386 processor as soon as it was available.
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evaluate new software and hardware for use on IBM platforms (primarily those based on the Intel 80386 architecture);
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The 1100/25 features a 25-megahertz (MHz) Intel 80386 chip that is enhanced with both 32-kilobyte (KB) cache memory and APACHE disk caching software for maximum processing speed.
The IBM PC version now costs $695, while versions designed to take advantage of the Intel 80386 chip cost more and ones written to work with the Intel 80387 or Weitek math coprocessor cost the most.
The heart of each computer is the Intel 80386 microprocessor, used to power most personal computers.