7.4.1. Clock Grouping

Try these first

1. 1.

   Define macro instruction.

   Hint

   Think of it as a large instruction.

2. 2.

   What does a micro instruction do?

   Hint

   Consider the smallest task in instruction execution.

3. 3.

   What does a macro instruction consist of?

   • A single clock cycle
   • Multiple clock cycles
   • Always simple operations

   Hint

   Think of how complex a macro instruction might be.

4. 4.

   Is a micro instruction executed in multiple clock cycles?

   • True
   • False

   Hint

   Remember the distinction between macro and micro instructions.

5. 5.

   Given a complex macro instruction, outline the micro instructions required to execute it efficiently.

   Hint

   Consider the FDES phases.

6. 6.

   Propose an alternative method to improve instruction cycle efficiency beyond clock grouping.

   Hint

   Think about other CPU efficiency techniques you've learned.