21.2. Control Signal Generation and Sequencing

Try these first

1. 1.

   What is a micro-programmed control unit?

   Hint

   Think about the role of signals in a CPU.

2. 2.

   Why is sequencing important in instruction execution?

   Hint

   Consider how one instruction leads to another.

3. 3.

   What is the main function of a micro-programmed control unit?

   • Generate CPU power
   • Manage control signal sequences
   • Store data

   Hint

   Focus on what the control unit actually does.

4. 4.

   True or False: The micro-program counter always increments after every instruction.

   • True
   • False

   Hint

   Think about exceptions to the typical incrementing behavior.

5. 5.

   Given an instruction sequence, identify where branching occurs and how it affects the micro-program counter.

   Hint

   Trace the instruction from start to finish with special attention to conditional statements.

6. 6.

   Create a mini design for a micro-program memory layout supporting three operations: FETCH, ADD, and JUMP if Zero.

   Hint

   Sketch a table with designated sections for each operation, ensuring you cover the essentials outlined in the section.