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Difference between 8085 and 8086 Microprocessor

Microprocessor

An integrated circuit that can work or work as a CPU of a computer or a microcontroller is defined as a microprocessor.

There are two popular microprocessors: 8085 and 8086. Let’s dive deep and explore some more about the 8085 and 8086 microprocessors.

8085 Microprocessor

It was designed in 1976 by Intel. It is an 8-bit microprocessor with an 8-bit data bus, allowing it to handle 8 bits of data in a single cycle. A 16-bit address bus is present. As a result, it has a potential accessible memory capacity of 64 kilobytes, or 216 bytes.

8086 Microprocessor

In 1976, Intel came up with the idea. As a result of its 16-bit microprocessor and 16-bit data bus it can process 16bit of data in a single cycle. There is a 20-bit address bus on it. The maximum amount of accessible memory that it can hold is 1 MB, or 220 bytes. The microprocessor 8086 is an improved model of the 8085.

Difference between 8085 and 8086 Microprocessor

 

Parameters

 

 

8085 Microprocessor

 

8086 Microprocessor

Basic It is an 8-bit microprocessor that has the ability to function 8-bit data. It is a 16-bit microprocessor that has the ability to function 16-bit data.
Type It is accumulator-based. It is register-based.
Arithmetic logic unit (ALU) size 8085 contains a 8-bit ALU size. 8086 contains a 16-bit ALU size.
Accessible memory Scope It holds 216 bytes or 64kb as the highest accessible memory scope. It holds 220 bytes or 1MB as the highest accessible memory scope.
Frequency of clock 8085 contains 3MHz of an on-chip oscillator. 8086 contains 5MHz, 8MHz, and 10MHz as three versions of clock frequency.
Address bus 8085 has an 8-bit address bus size. 80086 has a 16-bit address bus size.
Cost 8085 is cheaper in comparison with the 8086 microprocessor. 8086 is expensive in comparison with the 8085 microprocessor.
Pipelining This microprocessor doesn’t support pipelining architecture. The 8086 microprocessor supports pipelining architecture.
Processor configuration It is a single processor configuration microprocessor. It is a multiprocessor configuration microprocessor.
Instruction queue It doesn’t have any instruction queue. It has an instruction queue of the size 16-bit that follows the FIFO principle.
Operation mode The 8085 microprocessor supports a single mode of operation. The 8086 microprocessor supports two modes of operations, i.e. minimum and maximum mode.
Transistors It contains 6500 transistors. It contains 29000 transistors.
Operations The operations like addition, decrement, subtraction, increment, comparison, AND, shift, OR, and X-OR, can be completed by 8085. But, it can’t function division and multiplication All the procedures of microprocessors with division and multiplication can be functioned by this processor.
Flags It includes 5 flags. It includes 9 flags.
Segmentation It doesn’t allow memory segmentation. On the other hand, it allows memory segmentation.

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