26. Execution of Macro Instructions
This chapter discusses the execution of macro instructions through micro instructions, focusing on the optimization of micro routines for similar macro instructions. The implementation of control signals for conditional jumps, such as 'jump on zero' and 'jump on carry,' is also explored to highlight the concept of implicit and explicit jumps in a micro program context. The ability to optimize common routines for different types of macro instructions is emphasized throughout.
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What we have learnt
- Micro instructions can be optimized for similar macro instructions.
- Different types of jumps in micro programming include implicit and explicit jumps.
- Control signals dictate the execution flow based on the conditions such as flag status.
Key Concepts
- -- Micro Routine
- A sequence of micro instructions that execute a macro instruction.
- -- Implicit Jump
- A jump that occurs in the micro program without an explicit instruction due to shared routines.
- -- Explicit Jump
- A jump that is dictated directly by the control signals that must be implemented based on macro instruction requirements.
- -- Control Signals
- Signals that govern the operation of components within the micro architecture, determining actions based on conditions.
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