Addressing Modes in 8085

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1. Immediate Addressing Mode
2. Register Addressing Mode
3. Direct Addressing Mode
4. Indirect Addressing Mode
5. Implied/implicit Addressing Mode

Immediate Addressing Mode:

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An immediate is transferred directly to the register.
Eg: -

MVI A, 30H (30H is copied into the register A)
MVI B,40H(40H is copied into the register B).

Register Addressing Mode

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Data is copied from one register to another register.
Eg: -

MOV B, A (the content of A is copied into the register B)
MOV A, C (the content of C is copied into the register A).

Direct Addressing Mode

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Data is directly copied from the given address to the register.
Eg: -

LDA 3000H (The content at the location 3000H is copied to the register A).

Indirect Addressing Mode

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The data is transferred from the address pointed by the data in a register to other register.
Eg: -

MOV A, M (data is transferred from the memory location pointed by the regiser to the accumulator).

Implied Addressing Mode

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This mode doesn't require any operand. The data is specified by opcode itself.
Eg: -

RAL
CMP

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