24.3.2. Branching in Micro Programs

Try these first

1. 1.

   Define a microprogram.

   Hint

   Think of it as the 'sub-instructions' for the main instruction.

2. 2.

   What is the purpose of branching in microprograms?

   Hint

   Consider how similar tasks might use the same instructions.

3. 3.

   What does a microprogram control memory store?

   • Microinstructions
   • Macro instructions
   • Control signals

   Hint

   What is contained in the memory that's used to manage instruction execution?

4. 4.

   True or false: Branching is unnecessary for optimizing microprograms.

   • True
   • False

   Hint

   Think about whether you want to copy large sections of code for similar tasks.

5. 5.

   Design a microprogram that optimally uses branching to execute four different arithmetic operations.

   Hint

   Consider what shared steps each operation might have.

6. 6.

   Evaluate and suggest improvements for a given microprogram that currently performs poorly due to high memory usage.

   Hint

   Look for repeated patterns that you could consolidate.