11.3.3. Instruction Register Operations

Try these first

1. 1.

   What does MFC stand for?

   Hint

   Think about the signals related to memory operations.

2. 2.

   What is an MDR?

   Hint

   Look for the function of this register in data transfer.

3. 3.

   What does the MFC signal indicate?

   • Data is ready to write
   • Read operation is complete
   • Sending data to the address register

   Hint

   It’s a signal that tells us about the state of memory communication.

4. 4.

   True or False: The MDR only holds data being written to memory.

   • True
   • False

   Hint

   Consider the functions of the MDR in both processes.

5. 5.

   How would a corrupted MFC signal affect both read and write operations? Provide a detailed scenario.

   Hint

   Consider how signals synchronize the entire operation.

6. 6.

   Design a flowchart for a read operation from initiating the command to data being transferred to R1, including all control signals involved.

   Hint

   Focus on connecting each step logically to show the sequence.