16.4.1. Memory Address Register and Memory Data Register

Try these first

1. 1.

   What does the Memory Address Register (MAR) do?

   Hint

   Think about which register gets the instruction addresses.

2. 2.

   Define an unconditional jump.

   Hint

   Think about the type of jump that has no conditions.

3. 3.

   What is the purpose of the Memory Address Register (MAR)?

   • To store instruction data
   • To hold memory addresses
   • To execute instructions

   Hint

   Think about where the CPU looks to find an instruction.

4. 4.

   True or False: The Memory Data Register (MDR) holds the address of the instruction.

   • True
   • False

   Hint

   Consider what is stored in MDR versus MAR.

5. 5.

   Explain how control transfer instructions are implemented in a real-world programming scenario.

   Hint

   Consider programs that react differently based on user choices.

6. 6.

   Given a sequence of instructions, identify which ones would require jumps and why.

   Hint

   Look for if-else structures or loop constructs.