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Data Transfer Group Instructions (Part-I)

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MOV Rd, Rs : 
  • This instruction copies data from source register Rs to destination register Rd. 
  • Source and destination register can be any 8-bit general purpose register like A, B, C, D, E, H and L. 
  • Contents of source register remain unchanged.
  • No flags are affected.
  • It is a one byte instruction.
  • Register addressing mode is used in this instruction.
Example:
MOV B, C
MOV D, H

MOV R, M: 
  • This instruction copies data from memory location pointed by HL register pair to register R. 
  • R can be any 8-bit general purpose register like A, B, C, D, E, H and L.
  • No flags are affected.
  • It is a one byte instruction.
  • Indirect addressing mode is used in this instruction.
Example:
MOV C, M
MOV H, M

MOV M, R: 

  • This instruction copies the data from register R to the memory location pointed by HL register pair.
  • R can be any 8-bit general purpose register like A, B, C, D, E, H and L.
  • No flags are affected.
  • It is a one byte instruction.
  • Indirect addressing mode is used in this instruction.
Example:
MOV M, C
MOV M, H
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