Development of i386 technology began in 1982 under the internal name of P3. The tape-out of the 80386 development was finalized in July 1985. The 80386 was introduced as pre-production samples for software development See more

The following i386 assembly source code is for a subroutine named _strtolower that copies a null-terminated ASCIIZ character string from one … See more

• The AMD Am386SX and Am386DX were almost exact clones of the i386SX and i386DX. Legal disputes caused production delays for several years, but AMD's 40 MHz part eventually became very popular with computer enthusiasts as a low-cost and low-power … See more

Intel later offered a modified version of its 486DX in i386 packaging, branded as the Intel RapidCAD. This provided an upgrade path for users with i386-compatible hardware. The … See more

The processor was a significant evolution in the x86 architecture, and extended a long line of processors that stretched back to the Intel 8008. The predecessor of the 80386 was the Intel 80286, a 16-bit processor with a segment-based memory management and … See more

The first PC based on the Intel 80386 was the Compaq Deskpro 386. By extending the 16/24-bit IBM PC/AT standard into a natively 32-bit … See more

Intel originally intended for the 80386 to debut at 16 MHz. However, due to poor yields, it was instead introduced at 12.5 MHz.
Early in production, Intel discovered a marginal circuit that could cause a system to return incorrect … See more