8086 Microprocessor is an enhanced version of 8085Microprocessor that was designed by Intel in 1976. It is a 16-bit Microprocessor having 20 address lines and16 data lines that provides up to 1MB storage. It consists of powerful instruction set, which provides operations like multiplication and division easily.
It supports two modes of operation, i.e. Maximum mode and Minimum mode. Maximum mode is suitable for system having multiple processors and Minimum mode is suitable for system having a single processor.
Feature Of Microprocessor 8086
- Microprocessor 8086 is 16-bit processor i.e. ALU, Internal Register, instructions, word size, and data bus.
- 20-bit address bus so it can directly access 220 or 1048576 (1 MB) memory locations, but the 16-bit word is stored in 2 consecutive memory locations.
- Microprocessor 8086 can generate 16-bit I/O address so it can access 216 or 64000 ports.
- multiplexed address and data bus.
- Microprocessor 8086 works on 5 MHz clock cycle.
- Microprocessor 8086 able to perform a bit, byte, word, block operations including DIV & MUL.
- operates in 2 modes: MAX. & MIN mode. Max. the mode is used when in a multiprocessor.
- also supports multiprogramming (time multiplexed fashion)
- uses Queue to speed-up execution.
- uses 14, 16-bit registers.