Intel 80386SX

The Intel386 is a microprocessor which has been used as the central processing unit (CPU) of many personal computers since 1986. During its design phase the processor was code-named simply "P3", the third-generation processor in the x86 line, but is normally referred to as either i386 or just 386. The 80386 operated at about 5 million instructions per second (MIPS) to 11.4 MIPS for the 33 MHz model. [1] It was the first x86 processor to have a 32-bit architecture, with a basic programming model that has remained virtually unchanged for over twenty years and remains completely backward compatible. Successively newer implementations of this same architecture have become literally several hundred times faster than the original i386 chip during these years.
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<processor> A lower-speed version of the Intel 80386. It uses a 16-bit data bus instead of a 32-bit data bus. It has a 24-bit address bus. It is faster than the 286, and more importantly, like the full-size 386, provides more flexibility in running existing DOS applications. Intel's version runs at 16 MHz, while AMD's can run at up to 33 MHz. It comes in a PFP package.
(2003-07-05)