8.5.1. Memory-Mapped I/O

Try these first

1. 1.

   What is Memory-Mapped I/O?

   Hint

   Think about how devices are treated by the CPU.

2. 2.

   Name one benefit of using Memory-Mapped I/O.

   Hint

   Consider the programming aspect.

3. 3.

   What does Memory-Mapped I/O involve?

   • Accessing devices through memory addresses
   • Direct interrupt handling
   • Using network protocols

   Hint

   Think about how the CPU interacts with peripherals.

4. 4.

   True or False: Interrupts are essential in Memory-Mapped I/O for notifying the CPU of peripheral events.

   • True
   • False

   Hint

   Consider what happens when a timer expires.

5. 5.

   Design a simple embedded system using Memory-Mapped I/O to control a lighting array and a temperature sensor. Explain the interactions.

   Hint

   Consider how each device interacts through its mapped address.

6. 6.

   Evaluate the performance trade-offs of using Memory-Mapped I/O versus Port-Mapped I/O in a high-speed application.

   Hint

   Think about speed versus control in a busy environment.