26.4. Jump on Zero Execution Flow

Try these first

1. 1.

   Define micro instructions.

   Hint

   Think about what each instruction does at a micro-level.

2. 2.

   What is the purpose of the Zero flag?

   Hint

   Consider what this flag might signify after arithmetic operations.

3. 3.

   What is the function of the Zero flag in micro programming?

   • Indicates a positive result
   • Indicates a zero result
   • Indicates an overflow

   Hint

   Think about what a zero result would mean for a CPU operation.

4. 4.

   True or False: An implicit jump is always explicitly defined in the macro instruction.

   • True
   • False

   Hint

   Consider the definitions of both explicit and implicit jumps.

5. 5.

   Critically evaluate the impact of using a single micro routine for multiple macro instructions. Discuss potential advantages and disadvantages.

   Hint

   Think about project management and shared resources.

6. 6.

   Create a flowchart to visually represent the execution flow of the Jump on Zero instruction, indicating decision points.

   Hint

   Use standard flowchart symbols for clarity.