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Last modification

• Rev 195 – 7078 d 10 h
• Author: ira

• Log message:

  Update ALU1_lyang.v to have a more comprehensive test.
  Note that there is a BUG in the code. (see comments)
  
  Update ALU1.v to work correctly, and add a comprehensive test.
  
  Add ALU4.v which is a 4-bit ALU made by chaining 1-bit ALU's together.
  It is verified, and works.