14.5.2.2. Operational Steps for ADD Instruction

Try these first

1. 1.

   What is the immediate mode in instruction execution?

   Hint

   Think about how the operand is presented in the instruction.

2. 2.

   How many micro-steps are required for immediate mode operations?

   Hint

   Recall the distinct steps discussed for immediate mode.

3. 3.

   What is the number of micro-steps required to process an ADD instruction in immediate mode?

   • 4
   • 6
   • 7

   Hint

   Recall the breakdown of the immediate mode steps.

4. 4.

   True or False: In indirect mode, the instruction directly specifies the operand.

   • True
   • False

   Hint

   Think about where the operand is actually located in memory.

5. 5.

   Assess the control signal requirements for implementing a new addressing mode where the operand comes from a dynamically determined address. What challenges might arise?

   Hint

   Consider how dynamic addressing impacts processing speed and instruction cycle time.

6. 6.

   You are tasked with optimizing the computer architecture to minimize execution time for the ADD instruction in different modes. Identify strategies that could lower micro-step count.

   Hint

   Think about how architectural changes can enhance performance and reduce latency.