What is the 8085 microprocessor?
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The Intel 8085 (“eighty-eighty-five”) is an 8-bit microprocessor produced by Intel and introduced in March 1976. It is a software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features.
What is the significance of 8085?
Basically, 8085 was the first commercially successful microprocessor by Intel. As some of the architectural drawbacks associated with 8080 was also eliminated by 8085. The size of the data bus of 8085 is 8 bits while that of the address bus is 16. Therefore, can address 64 KB (i.e., 216) memory.
What is the difference between 8085 and 8086?
The 8086 is enhanced version of 8085 microprocessor. It is 16-bit processor….Differences between 8085 and 8086 microprocessor.
| Property | 8085 Microprocessor | 8086 Microprocessor |
|---|---|---|
| Data Bus Size | 8-Bit | 16-Bit |
| Address Bus Size | 16-bit | 20-bit |
| Clock Speed | 3MHz | Varies in range 5.8 – 10 MHz |
| Duty Cycle for clock | 50% | 33% |
What are the flags of 8085?
In 8085 microprocessor, the flags register can have a total of eight flags. Thus a flag can be represented by 1 bit of information. But only five flags are implemented in 8085….And they are:
- Carry flag (Cy),
- Auxiliary carry flag (AC),
- Sign flag (S),
- Parity flag (P), and.
- Zero flag (Z).
What are the limitations of 8085 microprocessor?
8085 Microprocessor has multiplexed address and data bus, so extra hardware is required to separate address and the data signals. Flags are very limited in 8085. Interrupts are very limited in 8085. Operating frequency is less in 8085 microprocessor, so the speed of execution is slow.
What are the operations performed on data in 8085?
Operations of the 8085 Microprocessor. The main operation of ALU is arithmetic as well as logical which includes addition, increment, subtraction, decrement, logical operations like AND, OR, Ex-OR, complement, evaluation, left shift or right shift.
What are the flags in 8085?
In 8085 microprocessor, the flags register can have a total of eight flags. Thus a flag can be represented by 1 bit of information. But only five flags are implemented in 8085….Flags register in 8085 Microprocessor
- Carry flag (Cy),
- Auxiliary carry flag (AC),
- Sign flag (S),
- Parity flag (P), and.
- Zero flag (Z).
What is the difference between 8085 and 8051?
8085 is the microprocessor developed by Intel….8085 Microprocessor.
| Specifications | 8051 | 8085 |
|---|---|---|
| Device Type | It is a microcontroller. | It is a microprocessor. |
| Timers/Counters | YES | No, Need to be connected externally. |
| Data bus width | 8 lines | 8 lines |
| Address Bus lines | 16 | 16 |
What is AD0 AD7?
Pins 12 to 19 of 8085 are AD0 – AD7 which is the multiplexed address-data bus. Multiplexing is done to reduce the number of pins of 8085. Lower byte of address (A0 – A7) are available from AD0 – AD7 (pins 12 to 19) during T1 of machine cycle.