Question

Explain the function of following instructions of Intel 8085 :

LDA 6605 H

Answer 1

LDA 6605 H [LOAD ACCUMULATOR DIRECT]

Format: [A] ← [[byte 3] [byte 2]]

Addressing: Direct addressing mode

Group: Data transfer group

Bytes: 3 bytes

Flag: None

Comment:  This instruction will load accumulator with a content of memory location, whose address is given in the instruction itself. The contents of the memory location are not altered.

Example:

Let [6605H] =    26 H

Instruction: LDA 6605H

After execution: [A] = 26 H

[6605H] = 26 H