Assembly-Guidebook

MOV Instruction

Copies second operand(source) to first operand(destination). MOV AX,5 Here, 5 is copied to AX.

MOV supprts these operands

1. MOV REG, MEMORY
2. MOV MEMORY, REG
3. MOV REG, REG
4. MOV MEMORY, IMMEDIATE
5. MOV REG, IMMEDIATE

Memory: [AX], [BX], [BX+SI+5] etc. Immediate: 5, 10, 1001b, 3Fh etc

For Segment Registers

• MOV A, B A: REG OR SEG REG OR MEMORY B: REG OR SEG REG OR MEMORY For example,

  MOV [BX], DS
  MOV AX, DS
  MOV DS, AX