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a history of microprocessing vol. 28: intel 386

by dsic

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about

The Intel386 DX microprocessor is a 32-bit microprocessor that forms the basis for a high-performance 32-bit system. The Intel386 DX microprocessor incorporates multi-tasking support, memory management, pipelined architecture, address translation caches, and a high-speed bus interface all on one chip. The integration of these features speeds the execution of instructions and reduces overall chip count for a system. Paging and dynamic data bus sizing can each be invoked selectively, making the Intel386 DX microprocessor suitable for a wide variety of system designs and user applications.

While the Intel386 DX microprocessor represents a significant improvement over previous generations of microprocessors, substantial ties to the earlier processors are preserved. Software compatibility at the object-code level is provided, so that an existing investment in 8086 and 80286 software can be maintained. New software can be built upon existing routines, reducing the time to market for new products. Hardware compatibility is preserved through the dynamic bus-sizing feature.

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released December 26, 2022

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