Intel 8086

A rare Intel C8086 processor in purple ceramic DIP package with side-brazed pins

The Intel 8086 is a 16-bit microprocessor of the late 1970s. It was the precessor of the Intel 8088, which was a popular processor in the 1980s. The design is based on the architecture of the 8080 and 8085, which were 8 bit processors Intel made in the 1970s. The 8086 lacks a few functions, which had to be added with external chips. It also lacks the ability to do floating-point calculations. This was commonly added with the 8087 chip. The IBM PC, released in the 1980s, used an 8088 chip. Amstrad built clones, which used the 8086 chip.

Intel 8086 Media

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  Intel 8086 CPU Die Image

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  The 8086 pin assignments in min and max mode

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  Simplified block diagram over Intel 8088 (a variant of 8086); 1=main & index registers; 2=segment registers and IP; 3=address adder; 4=internal address bus; 5=instruction queue; 6=control unit (very simplified!); 7=bus interface; 8=internal databus; 9=ALU; 10/11/12=external address/data/control bus.

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  Procesoro Intel D8086 CS (Customer Sample).

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  Procesoro Intel P8086.

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  Soviet clone K1810VM86

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  OKI M80C86A QFP-56

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  NEC μPD8086D-2 (8 MHz) from the year 1984, week 19 JAPAN (clone of Intel D8086-2)

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  CPU AMD D8086