8.1.4. Dependency and Sequencing

Try these first

1. 1.

   What does the Program Counter do?

   Hint

   Think about which value indicates the instruction order.

2. 2.

   Define memory addressing.

   Hint

   Consider how the CPU knows where to fetch data.

3. 3.

   What is the primary function of the Program Counter?

   • To execute instructions
   • To store data
   • To point to the next instruction

   Hint

   Think about what guides the CPU through its tasks.

4. 4.

   Can immediate addressing fetch data without additional steps?

   • True
   • False

   Hint

   Consider whether any further data retrieval is needed.

5. 5.

   Imagine a situation in a CPU where multiple instructions are attempting to read from and write to the same register at the same time. Explain the potential issues.

   Hint

   Consider how the instructions rely on the same resources.

6. 6.

   Design a sequence of micro instructions needed to execute a simple 'ADD R1, [X]' instruction where [X] contains the value stored at memory address 40.

   Hint

   Think about the roles of MAR, MBR, and the final destination register.