What are the adressing modes of 8085 microprocessor?

Answer 1

Different Addressing modes are: 1. Direct Addressing Mode 2. Indirect Addressing Mode 3. Immediate Addressing Mode 4. Register Addressing Mode 5. Implicit Addressing Mode Immediate addressing

Data is present in the instruction. Load the immediate data to the destination provided.

Example: MVI R,data Register addressing

Data is provided through the registers.

Example: MOV Rd, Rs

Direct addressing

Used to accept data from outside devices to store in the accumulator or send the data

stored in the accumulator to the outside device. Accept the data from the port 00H and

store them into the accumulator or Send the data from the accumulator to the port

01H.

Example: IN 00H or OUT 01H

Indirect Addressing

This means that the Effective Address is calculated by the processor. And the

contents of the address (and the one following) is used to form a second address. The

second address is where the data is stored. Note that this requires several memory

accesses; two accesses to retrieve the 16-bit address and a further access (or accesses)

to retrieve the data which is to be loaded into the register.