22.3.1. Multiplexer Configuration

Try these first

1. 1.

   What does a multiplexer do in digital systems?

   Hint

   Consider its role in signal routing.

2. 2.

   Define a micro-program counter (MPC).

   Hint

   Think about its purpose in instruction execution.

3. 3.

   What is the primary function of a multiplexer?

   • Route multiple outputs into a single line
   • Select one input from multiple sources
   • Divide one input into multiple outputs

   Hint

   Think about the choices a multiplexer has with its inputs.

4. 4.

   True or False: The branch address field determines the next instruction regardless of conditions.

   • True
   • False

   Hint

   Consider when the next address is actually chosen.

5. 5.

   Design a multiplexer configuration for a scenario where three conditions must be checked to determine the flow of execution for micro-instructions. Detail how you would implement control signals for each condition.

   Hint

   Think about the logic needed for each input setting.

6. 6.

   Given a micro-program counter that needs to handle both incrementing and jumping based on a complex set of conditions, propose a set of signals and conditions to effectively manage the execution path.

   Hint

   Consider the efficiency of how signals determine actions for every scenario.