14.3.4. Comparison of Addressing Modes

Try these first

1. 1.

   What is the immediate mode?

   Hint

   Think about how data is specified in an instruction.

2. 2.

   How many steps does immediate mode execution require?

   Hint

   Consider the steps discussed in class for this mode.

3. 3.

   What is the primary difference between immediate and direct addressing?

   • Immediate mode requires more memory accesses.
   • Direct mode involves a memory address pointing to the operand.
   • Immediate mode does not allow for operands in registers.

   Hint

   Reflect on the definitions of each addressing mode.

4. 4.

   True or False: Indirect mode only requires one memory access.

   • True
   • False

   Hint

   Think about how the operand is accessed.

5. 5.

   Analyze how the choice of addressing mode impacts instruction speed and complexity in programming.

   Hint

   Consider the performance issues and trade-offs related to each addressing mode.

6. 6.

   Propose how you would design an instruction set architecture with a focus on minimizing execution time by choosing appropriate addressing modes.

   Hint

   Reflect upon the modes we discussed and their use cases.