20.3.4. Sequencing and Control Signal Generation

Try these first

1. 1.

   What is a control signal?

   Hint

   Think about its role in executing instructions.

2. 2.

   Define hardwired control.

   Hint

   Consider flexibility when answering.

3. 3.

   What are control signals?

   • Signals for user input
   • Signals to manage operations within the CPU
   • Signals to manage memory

   Hint

   Consider their operational role in the system.

4. 4.

   True or False: Hardwired control units can easily be modified after fabrication.

   • True
   • False

   Hint

   Remember the nature of hardwired systems.

5. 5.

   Design a micro-programmed control unit for a simple instruction set including ADD and STORE. Explain how you would manage control signal generation.

   Hint

   Focus on the organization of the micro-program memory.

6. 6.

   Given a sequence of operations using control signals, analyze how you would handle a conditional branch in micro-programmed control.

   Hint

   Think about the flow of instructions and how conditions influence execution paths.