11.1.2. Instruction Execution

Try these first

1. 1.

   What is the purpose of the Memory Function Complete (MFC) signal?

   Hint

   What signal tells us when to proceed after fetching data?

2. 2.

   What does the Memory Data Register (MDR) do?

   Hint

   Think about what holds data right before it goes to or comes from memory.

3. 3.

   What role does the MFC signal play in instruction execution?

   • Indicates completion of a read operation
   • Indicates a write operation
   • None of the above

   Hint

   Remember what signal indicates when it's safe to proceed after reading data.

4. 4.

   True or False: The Memory Address Register (MAR) holds data before it is written to memory.

   • True
   • False

   Hint

   Consider what type of information the MAR contains.

5. 5.

   Design a micro-operation sequence involved in reading a data value from memory location 32 to register R1, detailing key signals and their purpose.

   Hint

   Map out each step precisely focusing on when signals change.

6. 6.

   Imagine a scenario where two processes are trying to access the same memory location. Explain how control signals can help prevent data corruption.

   Hint

   Focus on how timing and control signal coordination prevents conflicts.