Test
  Test - a variation of boolean or arithmetic. 
    Modifies CCR flags without changing the data being tested.

  Not supported on some machines. - Save copy of original, use boolean 
    instruction, then restore original.

Bit manipulation
  Setting or clearing condition flags

  Shifts and rotates
    Used to simulate multiply/divide on simpler cpus. 

Data transformation.
  Converts data from one format to another.
    IBM 360 - Pack commands
    Intel 8088 - ASCII adjust (another form type of pack)