MIPS Machine Code

R-Type

• Arithmetic and logic operations
• 
  • op: operation code
  • rs: first operand register
  • rt: second operand register
  • rd: result register
  • shamt: shift amount
  • funct: function, options for one operation

I-Type

• Immediate versions of arithmetic and logic operations
• Data transfer instructions and conditional branching
• 
• Immediate value is a 16-bit number in two’s complement

J-Type

• Used for unconditional jump
• 
• Target is a 26-bit number that will be interpreted as a word address