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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