25.5. Single Bus Architecture

Try these first

1. 1.

   Define single bus architecture.

   Hint

   Think about how components share information.

2. 2.

   What is horizontal microprogramming?

   Hint

   Focus on the 'parallel' aspect.

3. 3.

   What is the primary limitation of horizontal microprogramming?

   • Increased speed
   • Memory inefficiency
   • Reduced signal count

   Hint

   Remember the trade-offs between speed and memory.

4. 4.

   True or False: Vertical microprogramming allows for multiple signals to be active simultaneously.

   • True
   • False

   Hint

   Focus on the characteristics of signal activation.

5. 5.

   Given a hypothetical CPU with 8 temporary registers and 16 ALU functions, estimate the number of signals needed in a hybrid microprogram model and justify.

   Hint

   Consider how many functions can be executed at the same time.

6. 6.

   Analyze the implications of using exclusively horizontal microprogramming over a hybrid approach. Discuss performance and memory aspects.

   Hint

   Think about trade-offs in architecture design.