15.4. Conclusion of the Unit and Next Steps

Try these first

1. 1.

   What is immediate addressing mode?

   Hint

   Think about how constants are used in instruction.

2. 2.

   Name a register involved in instruction execution.

   Hint

   Consider which register holds memory addresses.

3. 3.

   What type of addressing mode directly uses a constant value?

   • Direct
   • Indirect
   • Immediate

   Hint

   Think about how the operand is represented.

4. 4.

   Indirect addressing typically requires how many memory accesses?

   • True
   • False

   Hint

   Recall the definition of indirect addressing.

5. 5.

   Explain how the CPU execution alters when switching from indirect to direct addressing modes.

   Hint

   Consider the steps involved in each mode.

6. 6.

   Design an instruction format incorporating at least three addressing modes, detailing how each would execute a basic arithmetic operation.

   Hint

   Break down the execution steps for clarity.