The Intel i387 is a high-performance numerics processor extension that extends the i386 microprocessor architecture with floating point, extended integer and BCD data types. The i386/i387 processors' computing system fully conforms to the ANSI/IEEE floating-point standard. Using a numerics oriented architecture, the i387 processor adds over seventy mnemonics to the i386/i387 processor instruction set, making the i386/i387 processor a complete solution for high-performance numerics processing. The i387 microprocessor is implemented with 1.5 micron, high-speed CHMOS technology and packaged in a 68-pin ceramic pin grid array (PGA) package and a 68-pin ceramic quad flat pack package. The i386/i387 processor combination is upward object-code compatible from the i386/80287, 80286/80287 and 8086/8087 computing systems.
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