CHAPTER 13 — Addition and Subtraction Instructions

This chapter discusses the MIPS instructions for performing 32-bit integer addition and subtraction. Some topics of integer representation with bit patterns are reviewed.

Chapter Topics:

• Overflow in unsigned binary and two's complement (review).
• The add and addu instructions.
• Sign extention
• The addi and addiu instructions.
• The sub and subu instructions.
• Using addi to load a register with a negative integer.