In the changing world of technologies, the devices used are also changing. Let us take a look at the changes between 8085 series of microprocessors and 8086 series of microprocessors.
| Serial No. | 8085 microprocessor | 8086 microprocessor |
|---|---|---|
| 1 | The data bus is of 8 bits. | The data bus is of 16 bits. |
| 2 | The address bus is of 16 bits. | The address bus is of 20 bits. |
| 3 | The memory capacity is 64 KB.Also 8085 Can Perform Operation Upto 2^8 ie. 256 numbers. A number greater than this is to taken multiple times in 8 bit data bus. | The memory capacity is 1 MB.Also 8086 Can Perform Operation upto 2^16 ie. 65,536 numbers. |
| 4 | The input/output port addresses are of 8 bits. | The input/output port addresses are of 8 bits. |
| 5 | The operating frequency is 3.2 MHz. | The operating frequency is 5 MHz, 8MHZ,10MHZ. |
| 5 | 8085 MP has Single Mode Of Operation. | 8086 MP has Two Modes Of Operation. 1. Minimum Mode = SingLe CPU PROCESSOR 2. Maximum Mode = Multiple CPU PROCESSOR. |
| 6 | It not have multiplication and division instructions. | It have multiplication and division instructions. |
| 7 | It does not support pipe-lining. | It supports pipe-lining as it has two independent units Execution Unit (EU) and Bus Interface Unit (BIU). |
| 8 | It does not support instruction queue. | It supports instruction queue. |
| 9 | Memory space is not segmented. | Memory space is segmented. |
| 10 | It consists of 5 flags(Sign Flag, Zero Flag, Auxiliary Carry Flag, Parity Flag, Carry Flag). | It consists of 9 flags(Overflow Flag, Direction Flag, Interrupt Flag, Trap Flag, Sign Flag, Zero Flag, Auxiliary Carry Flag, Parity Flag, Carry Flag). |
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