29. Basic addressing mode

• Load word from memory:

  
       lw $t1, 4($t2)  # $t1 = Memory[$t2+4]
  
  

  • $t1 is the destination register

  • $t2 contains the base address (pointer to memory)

  • 4 is the offset from the base address

• Store word in memory:

  
       sw $t1, 4($t2)  # Memory[$t2+4] = $t1
  
  

  • $t1 is the source register

  • $t2 contains the base address (pointer to memory)

  • 4 is the offset from the base address