Arithmetic Logic Unit

This is a Component that is capable of:

• Arithmetic operations:
  • Multi-Bit Adder
  • Subtractor
  • Decrementer
  • Multiplier
  • Equality
  • etc..
• Logic operations:
  • OR
  • AND
  • etc..

Block Diagram

• $n$-bit Inputs $a$, $b$
• Input $func$
• one bit $C_{in}$ to determine addition or subtraction
• Output $G$
• Output byte corresponding to CPU Flag:

Specific ALU

• MIPS ALU